Statement of Problem and Substantiation for Public Input ... make and model number 6. ... Suction main size, length, location, type of material, and point of connection to water supply

Public Input No. 88-NFPA 20-2013 [ New Section after 3.3.38.10 ]

Add New Defination3.3.28.11 Multiple Stage Multiple Port Pump. A single driver pump with multiple impellers operating inseries where the discharge from each impeller except the last impeller is the suction for the next impeller,and a discharge port is provided after each impeller.

Statement of Problem and Substantiation for Public Input

NFPA 20 does not currently address multiple stage multiple port fire pumps

Related Public Inputs for This Document

Related Input Relationship

Public Input No. 83-NFPA 20-2013 [New Section after 6.2.2]

Submitter Information Verification

Submitter Full Name: Gayle Pennel

Organization: Aon Fire Protection Engineerin

Street Address:

City:

State:

Zip:

Submittal Date: Mon Jun 17 16:07:21 EDT 2013

Committee Statement

Resolution: FR-1-NFPA 20-2013

Statement: NFPA 20 does not currently address multiple stage multiple port fire pumps. Add new definition ofmultiple stage multiple port fire pumps. Within this new definition explain that there may not be anoutlet after each impeller. See new annex language A.3.3.38.11.

Copyright Assignment

I, Gayle Pennel, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Gayle Pennel, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

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Public Input No. 63-NFPA 20-2013 [ Section No. 3.3.41 ]

3.3.41 Record Drawing.

A design, working drawing, or

Drawings. Drawings ( as-built

drawing

) that

is submitted as the final record of documentation for the project.

document the location of all devices, appliances, wiring sequences, wiring methods, andconnections of the components of the system as installed [72:2016]


Paragraph 14.3 refers to record drawings so the definition has been revised to be plural. It would be extremely rare that the design drawings could serve as the record drawings. The record drawings should indicate the as build (installed) condition. In searching for a better definition, it was noted that NFPA 72 already has a definition so it is proposed to extract the definition from NFPA 72. While there may be some text not exactly related to a fire pump installation, the definition still seems to be applicable.


Submitter Full Name: William Koffel

Organization: Koffel Associates, Inc.

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jun 06 06:20:42 EDT 2013

Committee Statement


Statement: Paragraph 14.3 refers to record drawings so the definition has been revised to be plural. It would beextremely rare that the design drawings could serve as the record drawings. The record drawingsshould indicate the as build (installed) condition. In searching for a better definition, it was noted thatNFPA 72 already has a definition so it is proposed to extract the definition from NFPA 72. While theremay be some text not exactly related to a fire pump installation, the definition still seems to beapplicable. Partially extracted revised language from NFPA 72.


I, William Koffel, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am William Koffel, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


2 of 201 1/13/2014 12:51 PM

Public Input No. 15-NFPA 20-2013 [ Section No. 3.3.57.2 ]

3.3.57.2 Low Suction Throttling 2 Suction Pressure Regulating Valve.

A pilot-operated valve installed in discharge piping that maintains positive pressure in the suction piping,while monitoring pressure in the suction piping through a sensing line.


The proposed term provides consistancy with industry and the FM approval guide.




Street Address:

City:

State:

Zip:

Submittal Date: Tue Feb 12 10:16:15 EST 2013

Committee Statement


Statement: The proposed term provides consistancy with industry and the FM approval guide.





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4.2.3.1

Plans shall be drawn to an indicated scale, on sheets of uniform size, and shall indicate, as a minimum,the items from the following list that pertain to the design of the system:

(1) Name of owner and occupant

(2) Location, including street address

(3) Point of compass

(4) Name and address of installing contractor

(5) Pump make and model number

(6) Pump rating _______ gpm @ _____ psi ______ rpm

(7) Suction main size, length, location, weight, type type of material, and point of connection towater supply , as well as size depth to top of pipe if below grade

(8) Size and type of valves, valve indicators regulators , regulators, meters, and valve pits , anddepth to top of pipe below grade

Water supply capacity information including the

(9) if present

(10) If a flow test was conducted to determine water supply availability, provide the following:

(a) Location and elevation of static and residual test gauge with relation to the riserthe elevation reference point

(b) Flow location

(c) Static pressure, psi (bar)

(d) Residual pressure, psi (bar)

(e) Flow, gpm (L/min)

(f) Date

(g) Time

(h) Name of person who conducted the test or supplied the information

Other

(11) Pressure, flow, size and elevation of other sources of water supply

, with pressure or elevation

(12)

(13) Pump driver details including manufacturer , horsepower, voltage, or fuel systemdetails and horsepower

(14) Voltage for electric motor driven pumps

(15) Fuel system details for diesel driven pumps

(16) Controller manufacturer, type, and rating

(17) Suction and discharge pipe, fitting, and valve types

(18) Test connection piping and valves

(19) Flow meter details (if used)

(20) Jockey pump If a jockey pump is provided, include jockey pump and controller arrangement ,including sensing with sensing line details


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Additional Proposed Changes

File Name Description Approved

4-2-3-1_Plans.tiff This is what the section would look like in legislative text.


The intent is to clean up the requirements so that they are applicable to fire pump installations. The following changes were made:

1. The weight of the suction piping was eliminated because that is not important. How many pounds of suction pipe are present is not an aspect of fire pump installations that should be subjected to plan review.

2. The "valves, regulators, meters, and valve pits" were moved to their own line with "if present" added to them because they are not always included in a fire pump installation and they should not be limited to suction piping. The AHJ should get this information about valves regarding the discharge valves as well.

3. The "valve indicators" was removed because the type of valve will be included with the description and size of the valve. We should not also have to described the size of the stem coming out of the valve to indicate that it is open.

4. The water supply information in part (8) (except for item "I" which was dealt with separately) only applies to flow test information, so this portion of the list was clarified to show that it only applies to those situations where a flow test was run.

5. The "riser reference point" was changed to "elevation reference point" because a fire pump installation does not have a riser.

6. Item "I" was moved to its own item in the list because it does not pertain to a flow test. Flow and size information was added because this is an important point for items like tanks.

7. Voltage and fuel system requirements were separated to make them independent.

8. The term "if provided" was added to the jockey pump information because they are not always provided and you should not have to provide information on a jockey pump that is not present.

The whole section should look like the following (a legislative version will be provided as an uploaded file because the system messed it up completely):

4.2.3.1 Plans shall be drawn to an indicated scale, on sheets of uniform size, and shall indicate, as a minimum, the items from the following list that pertain to the design of the system: 1. Name of owner and occupant2. Location, including street address 3. Point of compass4. Name and address of installing contractor 5. Pump make and model number6. Pump rating _______ gpm @ _____ psi ______ rpm7. Suction main size, length, location, type of material, and point of connection to water supply as well as depth to top of pipe if below grade 8. Size and type of valves, regulators, meters, and valve pits if present9. If a flow test was conducted to determine water supply availability, provide the following: a) Location and elevation of static and residual test gauge with relation to the elevation reference point b) Flow location c) Static pressure, psi (bar) d) Residual pressure, psi (bar) e) Flow, gpm (L/min) f) Date g) Time h) Name of person who conducted the test or supplied the information


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10. Pressure, flow, size and elevation of other sources of water supply11. Pump driver details including manufacturer and horsepower12. Voltage for electric motor driven pumps13. Fuel system details for diesel driven pumps14. Controller manufacturer, type, and rating 15. Suction and discharge pipe, fitting, and valve types 16. Test connection piping and valves17. Flow meter details (if used)18. If a jockey pump is provided, include jockey pump and controller arrangement with sensing line details


Submitter Full Name: Kenneth Isman

Organization: National Fire Sprinkler Association

Street Address:

City:

State:

Zip:

Submittal Date: Mon Jul 08 11:00:52 EDT 2013

Committee Statement


Statement: The intent is to clean up the requirements so that they are applicable to fire pump installations. Thefollowing changes were made: 1. The weight of the suction piping was eliminated because that is notimportant. How many pounds of suction pipe are present is not an aspect of fire pump installationsthat should be subjected to plan review. 2. The "valves, regulators, meters, and valve pits" weremoved to their own line with "if applicable" added to them because they are not always included in afire pump installation and they should not be limited to suction piping. The AHJ should get thisinformation about valves regarding the discharge valves as well. 3. The "valve indicators" wasremoved because the type of valve will be included with the description and size of the valve. Weshould not also have to described the size of the stem coming out of the valve to indicate that it isopen. 4. The water supply information in part (8) (except for item "I" which was dealt with separately)was clarified to show that the list only applies to those situations where a flow test was run. 5. The"riser reference point" was changed to "elevation reference point" because a fire pump installationdoes not have a riser. 6. Item "I" was moved to its own item in the list because it does not pertain to aflow test. Flow and size information was added because this is an important point for items like tanks.7. Voltage and fuel system requirements were separated to make them independent. 8. The term "ifapplicable" was added to the pressure maintenance pump information because they are not alwaysprovided and you should not have to provide information on a pressure maintenance pump that is notpresent.


I, Kenneth Isman, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Kenneth Isman, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


6 of 201 1/13/2014 12:51 PM

4.2.3.1 Plans shall be drawn to an indicated scale, on sheets of uniform size, and shall indicate, as a minimum, the items from the following list that pertain to the design of the system:

1. Name of owner and occupant

2. Location, including street address

3. Point of compass

4. Name and address of installing contractor

5. Pump make and model number

6. Pump rating gpm @ __ psi rpm

7. Suction main size, length, location, weight, type of material, and point of connection to water supply as well as size and type of valves, valve indicators, regulators, meters, and valve pits and depth to top of pipe lf below grade

8. Size and type of valves, regulators, meters, and valve pits if present

9. Water supply capacity information including If a flow test was conducted to determine water supply availability, provide the following:

a) Location and elevation of static and residual test gauge with relation to the fisef elevation reference point

b) Flow location

c) Static pressure, psi (bar)

d) Residual pressure, psi (bar)

e) Flow, gpm (L/min)

f) Date

g) Time

h) Name of person who conducted the test or supplied the information

1 0. tf1 Pressure, flow, size and elevation of other sources of water supply

11. Pump driver details including manufacturer and horsepower, voltage or fuel system details

12. Voltage for electric motor driven pumps

13. Fuel system details for diesel driven pumps

14. Controller manufacturer, type, and rating

15. Suction and discharge pipe, fitting, and valve types

16. Test connection piping and valves

17. Flow meter details (if used)

18. If a jockey pump is provided, include jockey pump and controller arrangement including with sensing line details


Insert New Section after 4.5.14.5.1.1 For multiple stage multiple port pump, certified shop test data, including flow, pressure, andhorsepower, shall be provided for each impeller.


Part of needed changes to add multiple stage multiple port pumps to NFPA 20



Public Input No. 76-NFPA 20-2013 [New Section afterA.3.3.36]

Part of Multiple Stage Multiple Port PumpRequirements




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of needed changes to add multiple stage multiple port pumps to NFPA 20. There may not be anoutlet after each impeller.





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4.6.1.2

Where a water flow test is used to determine the adequacy of the attached water supply, the test shallhave been completed not more than 12 months prior to the submission of working plans and shallrepresent the highest peak demand on the attached water supply , unless otherwise permitted by theauthority having jurisdiction.


Currently there is no guidance or requirements regarding the performance of the attached water supply. Fire pump installers can perform fire pump testing when the water supply is under its least demand. There are instances where the water supply may be inadequate because the demand generated by other users. The fire pump test would fail; however, the pump test could be performed when demand for water is significantly less resulting in an adequate supply of water. The purpose of the pump is to supply water for the purposes of fire protection 24/7, 365 days per year, and it should be tested when the water demand is the greatest. This would result in a more accurate performance of the fire protection system and provide more accurate information for fire department pre-planning efforts where the water system may under perform.

In the event that the water supply is deemed inadequate the provisions of 4.6.2.3.1 and 4.6.2.3.2 would apply.


Submitter Full Name: Doug Hohbein

Organization: Northcentral Fire Code Develop

Street Address:

City:

State:

Zip:

Submittal Date: Tue Apr 02 22:35:30 EDT 2013

Committee Statement

Resolution: Section 4.6.1.1 currently directs the designer to fully determine, with due allowance for its reliability inthe future the water supply.


I, Doug Hohbein, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Doug Hohbein, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


8 of 201 1/13/2014 12:51 PM

Public Input No. 73-NFPA 20-2013 [ New Section after 4.6.2.3.2 ]

TITLE OF NEW CONTENT

4.6.2.4* The effect of the fire pump operation on the water supply shall be reviewed.

4.6.2.4.1 The operation of the fire pump shall not create excessive pressure surges in the water supply.


Pressure surge issues that can result in broken pipe and/or system components is currently not addressed by NFPA 20.




Street Address:

City:

State:

Zip:

Submittal Date: Fri Jun 07 15:27:08 EDT 2013

Committee Statement

Resolution: This is a complex issue that extends well beyond the jurisdiction of NFPA 20.





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Add new Section

4.8 Multiple Stage Multiple Port Pump.

4.8.1 Multiple Stage Multiple Port Fire Pumps shall be installed in accordance with this standard.

4.8.2 A shutoff valve shall not be required between the impellers of a multiple stage multiple port pump.


Part of multiple stage multiple port fire pump requirements




Part of multiple stage multiple port fire pumprequirements




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of multiple stage multiple port fire pump requirements.





10 of 201 1/13/2014 12:51 PM

Public Input No. 78-NFPA 20-2013 [ New Section after 4.8 ]

Add New Sections

4.8 Multiple Stage Multiple Port Pumps.

4.8.1 Multiple Stage Multiple Port Fire Pumps shall be installed in accordance with this standard.

4.8.2 A shutoff valve shall not be required between the impellers of a multiple stage multiple port pump.


Part of requirements to add multiple stage multiple port fire pumps to NFPA 20





Public Input No. 77-NFPA 20-2013 [New Section after4.5.1.1]





Street Address:

City:

State:

Zip:


Committee Statement







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4.10.1.2

The dial shall required pressure gauges shall be approved ASME 40.1, Grade B Commercial guageshaving an accuracy of +/- 3-2-3% of span and the dial shall indicate pressure to at least twice the ratedworking pressure of the pump but not less than 200 psi (13.8 bar).


A specific gauge accurcy needs to be indicated.


Submitter Full Name: Tracey Bellamy

Organization: Telgian Corporation

Street Address:

City:

State:

Zip:

Submittal Date: Thu May 23 12:33:29 EDT 2013

Committee Statement

Resolution: This type of accuracy is not required for fire pump gauges which are not used for performancetesting.


I, Tracey Bellamy, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Tracey Bellamy, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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4.10.2.3

The required pressure gauges shall be approved ASME 40.1, Grade B Commercial gauges having anaccuracy of +/-3-2-3% of span and the gauge shall have a pressure range two times the rated maximumsuction pressure of the pump.


A specific gauge accurcy needs to be specified.


Submitter Full Name: Tracey Bellamy

Organization: Telgian Corporation

Street Address:

City:

State:

Zip:


Committee Statement

Resolution: This type of accuracy is not required for fire pump gauges which are not used for performancetesting.


I, Tracey Bellamy, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Tracey Bellamy, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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Public Input No. 125-NFPA 20-2013 [ New Section after 4.11.1 ]

Full flow of cooling water to the pump during churn in variable speed pressure limiting controlledfire pumps

Where an electric variable speed pressure limiting controller is installed, the automatic relief valve shall bebypassed by a normally-closed, electric solenoid operated valve, permitting full flow of cooling water to thepump when the variable speed pressure limiting controller is running regardless of the discharge output ofthe pump. Energy to operate the solenoid valve shall be provided by the variable speed pressure limitingcontroller when operating in variable speed mode only.


When the pressure set point is satisfied during churn, the variable speed drive runs at a minimum speed which is often set at 50% of rated motor full-speed. Not enough pressure is developed at this minimum speed to provide adequate water flow for cooling the pump. This is a concern since the pump can be running in churn for a period of time during a weekly or monthly test for example. Outside of the variable speed drive, the problem doesn't exist since the motor is operating at full-speed during churn and is developing adequate pressure for flowing cooling water, unless of course, the relief valve isn't properly set.


Submitter Full Name: DOUG STEPHENS

Organization: ASCO POWER TECHNOLOGIES

Street Address:

City:

State:

Zip:

Submittal Date: Sun Jul 07 21:46:01 EDT 2013

Committee Statement


Statement: Add new section 4.11.1.1 and renumber remaining section numbers. When the pressure set point issatisfied during churn, the variable speed drive runs at a minimum speed which is often set at 50% ofrated motor full-speed. Not enough pressure is developed at this minimum speed to provide adequatewater flow for cooling the pump. This is a concern since the pump can be running in churn for aperiod of time during a weekly or monthly test for example. Outside of the variable speed drive, theproblem doesn't exist since the motor is operating at full-speed during churn and is developingadequate pressure for flowing cooling water, unless of course, the relief valve isn't properly set.Setting the circulation relief valve properly will provide the necessary cooling water without a solenoidvalve. Part of multiple stage multiple port fire pump requirements.


I, DOUG STEPHENS, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyrightin this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am DOUG STEPHENS, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


14 of 201 1/13/2014 12:51 PM


Add New Section4.11.1.2.1 A multiple stage multiple port pumps the automatic relief valve shall be installed before thedischarge check valve for the last port and set below the minimum discharge pressure from the last portwith the highest pressure rated impeller discharging 150% of rated flow.










Street Address:

City:

State:

Zip:


Committee Statement


Statement: Add new section 4.11.1.1 and renumber remaining section numbers. When the pressure set point issatisfied during churn, the variable speed drive runs at a minimum speed which is often set at 50% ofrated motor full-speed. Not enough pressure is developed at this minimum speed to provide adequatewater flow for cooling the pump. This is a concern since the pump can be running in churn for aperiod of time during a weekly or monthly test for example. Outside of the variable speed drive, theproblem doesn't exist since the motor is operating at full-speed during churn and is developingadequate pressure for flowing cooling water, unless of course, the relief valve isn't properly set.Setting the circulation relief valve properly will provide the necessary cooling water without a solenoidvalve. Part of multiple stage multiple port fire pump requirements.





15 of 201 1/13/2014 12:51 PM

Public Input No. 13-NFPA 20-2013 [ New Section after 4.12 ]

Fire Pump Accessibility

The path to the fire pump shall be clear, obvious, and readily accessible.


There is nothing in the standard that specifically states that access to the fire pump must be unobstructed and easy to get to. As an example, if the door to the fire pump room is difficult to open, there is nothing specfici that says one must be able to reach the fire pump easily.


Submitter Full Name: Hal Cohen

Organization: HCC and Associates, Inc.

Street Address:

City:

State:

Zip:

Submittal Date: Fri Feb 01 14:32:51 EST 2013

Committee Statement

Resolution: Language is not enforceable.


I, Hal Cohen, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Hal Cohen, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


16 of 201 1/13/2014 12:51 PM


4.12.1.3 Fire Pump Buildings or Rooms with Diesel Engines .

Fire pump buildings or rooms enclosing diesel engine pump drivers and day tanks shall rooms shall beprotected with an automatic sprinkler system installed in accordance with NFPA 13, Standard for theInstallation of Sprinkler Systems.


The purpose of this amendment is to require that fire sprinkler protection be provided in all fire pump rooms. The base code already requires this protection for diesel fire pumps. This amendment will extend that protection to electric fire pumps. The intent of this amendment is to provide protection for the fire pump equipment.


Submitter Full Name: Kelly Nicolello

Organization: Western Regional Fire Code Dev

Street Address:

City:

State:

Zip:

Submittal Date: Tue Apr 16 16:52:23 EDT 2013

Committee Statement

Resolution: Covered under 4.12.1.1.2.


I, Kelly Nicolello, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Kelly Nicolello, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


17 of 201 1/13/2014 12:51 PM

Public Input No. 134-NFPA 20-2013 [ Section No. 4.12.2.1.1 ]

4.12.2.1.1

Fire pump rooms not directly accessible from the outside shall be accessible through an enclosedpassageway from an enclosed stairway or exterior exit , which is not part of a required means of egress .


Access to a fire pump room should not be allowed to be from a protected exit enclosure. Protected exit enclosures are very important to the means of egress and should not be utilized for this type of equipment access. Any problems associated with equipment failure could jeopardize the integrity of the means of egress, as protected exit enclosures are dedicated egress paths. It appears that the allowance in this section of NFPA 20 conflicts with NFPA 5000, section 11.1.3.2.1.6, and also the IBC. These documents do not allow such openings into protected exit enclosures.

NFPA 5000, section 11.1.3.2.1.6* states: Openings in exit enclosures shall be limited to doors from normally occupied spaces and corridors and for egress from the enclosure, unless such openings are in exit passageways in mall buildings, as provided in 27.2.2.7.

NFPA 5000, section A.11.1.3.2.1.6 states: Means of egress from the level of exit discharge is permitted to pass through an exit stair enclosure or exit passageway serving other floors. Doors for convenience purposes and unrelated to egress also are permitted to provide access to and from exit stair enclosures and exit passageways, provided that such doors are from corridors or normally occupied spaces. It is also the intent of this provision to prohibit exit enclosure windows, other than approved vision panels in doors, that are not mounted in an exterior wall.

This revision would require a dedicated and protected access to the fire pump room, if there is no direct access from outside. This will ensure that during a fire, the fire department has good access to the fire pump room without the risk of compromising the protected exit enclosure. If the Technical Committee does not agree with this change, then consideration should be given to adding an exception for fire pump room access in NFPA 5000.


Submitter Full Name: Jim Muir

Organization: Building Safety Division, Clark County, Washington

Affilliation: NFPA Building Code Development Committee (BCDC)

Street Address:

City:

State:

Zip:


Committee Statement

Resolution: If an issue exists, it needs to be resolved at the building code level. Section 54.4 of NFPA 5000states: 54.4 Openings to Exit Enclosures. Conveyors, elevators, dumbwaiters, and pneumaticconveyors serving various stories of a building shall not open to an exit enclosure. This appears to bethe identical issue and if passage to or from an elevator to or from a building exit can beaccommodated without the elevator opening into an exit enclosure, it should be possible to accessfire pump room without violating the code.


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I, Jim Muir, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Jim Muir, and I agree to be legally bound by the above Copyright Assignment and the terms andconditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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4.12.2.1.1

Fire pump rooms not directly accessible from the outside shall be accessible through an enclosedpassageway from an enclosed stairway or exterior exit passageway .


Building and fire codes will typically prohibit openings into normally unoccupied areas such as mechanical equipment spaces where fire pumps are typically located (for example see 7.1.3.2.1(9) in NFPA 101).


Submitter Full Name: Bill Galloway

Organization: Southern Regional Fire Code De

Street Address:

City:

State:

Zip:

Submittal Date: Tue Mar 12 13:13:15 EDT 2013

Committee Statement

Resolution: If an issue exists, it needs to be resolved at the building code level. Section 54.4 of NFPA 5000states: 54.4 Openings to Exit Enclosures. Conveyors, elevators, dumbwaiters, and pneumaticconveyors serving various stories of a building shall not open to an exit enclosure. This appears to bethe identical issue and if passage to or from an elevator to or from a building exit can beaccommodated without the elevator opening into an exit enclosure, it should be possible to accessfire pump room without violating the code


I, Bill Galloway, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Bill Galloway, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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4.12.5.2 The minimum average horizontal illumination provided by normal lighting sources in theseparate building or room housing the fire pump equipment shall be 32.3 lux (3.0 ft-candles)measured at the floor level, unless otherwise specified by a requirement recognized by theauthority having jurisdiction.


The level of illumination required by NFPA 101 for emergency light is an average of 1 ft-candle and, at any point, not less than 0.1 ft-candle. While adequate for egress purposes, the level of illumination is not adequate for a person to work in a fire pump room should normal power be lost. The level of illumination recommended in this Public Input is consistent with a Level 1 EPS room (per NFPA 110). The Committee might also want to consider requirement battery-operated emergency light units consistent with the requirements in NFPA 110. The Committee may also want to give consideration to the duration of the emergency lighting system. NFPA 101 would require a minimum of 90 minutes and would the lighting level to degrade from the performance stated above during that time period. Whereas the water supply duration and operation of the fire pump may be in excess of 90 minutes, NFPA 20 may want to require emergency lighting for a longer period of time.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Add new sections to section 4.12.5, delete existing section 4.12.5.1. The level of illumination requiredby NFPA 101 for emergency light is an average of 1 ft-candle and, at any point, not less than 0.1ft-candle. While adequate for egress purposes, the level of illumination is not adequate for a person towork in a fire pump room should normal power be lost. The level of illumination recommended in thisPublic Input is consistent with a Level 1 EPS room (per NFPA 110). The Committee might also wantto consider requirement battery-operated emergency light units consistent with the requirements inNFPA 110. The Committee may also want to give consideration to the duration of the emergencylighting system. NFPA 101 would require a minimum of 90 minutes and would the lighting level todegrade from the performance stated above during that time period. Whereas the water supplyduration and operation of the fire pump may be in excess of 90 minutes, NFPA 20 may want torequire emergency lighting for a longer period of time. Revised proposed language to be moreconsistent with NFPA 110.


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4.12.8 Guards.

Couplings and flexible connecting shafts shall be installed with a coupling guard in accordance with Section8 of ANSI B15.1, Safety Standard for Mechanical Power Transmission Apparatus.

ANSI B15.1 is not longer available and is superseding by ANSI B11.19 - 2010


Establish a requirement based on a standard that is no longer available and has been superseded by another.


Submitter Full Name: Aldo Restrepo

Organization: TIPIEL SA

Street Address:

City:

State:

Zip:

Submittal Date: Tue Jan 15 16:49:06 EST 2013

Committee Statement


Statement: ANSI B15.1 has been superseded by ANSI B11.19, updated reference to ANSI standard.


I, Aldo Restrepo, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Aldo Restrepo, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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Add New Section4.14.1.2 For multiple stage multiple port pumps, the suction pipe ends at the pump suction flange.









Public Input No. 78-NFPA 20-2013 [New Section after4.8]





Street Address:

City:

State:

Zip:


Committee Statement

Resolution: Suction pipe adequately defined elsewhere.





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Add new section

4.14.4.2 For multiple stage multiple port pumps a bypass shall be installed between the pump suction andthe first outlet port, and between sequential outlet ports whenever the bypass can provide pressure that is of material value without the impeller. (See Figure A.4.14.4.)


Part of multiple stage multiple port fire pump requirements not currently covered by NFPA 20








Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of multiple stage multiple port fire pump requirements not currently covered by NFPA 20





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Add New Section4.15.2 For multiple stage multiple port pumps the discharge components for each port shall consist of pipe,valves, and fittings extending from the pump port discharge flange to the system side of the dischargevalve for that port..


Part of multiple stage multiple port fire pump requirements not currently covered in NFPA 20.



Public Input No. 88-NFPA 20-2013 [New Section after 3.3.38.10]




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of multiple stage multiple port fire pump requirements not currently covered in NFPA 20.





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4.15.9.1

Low suction throttling valves Suction pressure regulating valves or variable speed suction limiting controlsfor pump drivers that are listed for fire pump service and that are suction pressure sensitive shall bepermitted where the authority having jurisdiction requires positive pressure to be maintained on the suctionpiping.


Makes the terminology consistant with the FM Approval Guide



Public Input No. 15-NFPA 20-2013 [Section No. 3.3.57.2] Align terminology with FM Approval Guide




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Make terminology consistant with industry and FM Approval Guide. Variable speed pressure limitingcomponents are not installed on the fire pump discharge piping. NFPA 20 requires operation andtesting of a fire pump at the higher of the system demand or 100% of rated flow. The throttling valvemust be fully open to accomplish this.





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Public Input No. 20-NFPA 20-2013 [ Sections 4.15.9.1, 4.15.9.2, 4.15.9.3, 4.15.9.4,

4.15.9.5 ]

Sections 4.15.9.1, 4.15.9.2, 4.15.9.3, 4.15.9.4, 4.15.9.5

4.15.9.1

Low suction throttling valves or variable speed suction limiting controls for pump drivers that Suctionpressure regulating valves that are listed for fire pump service and that are suction pressure sensitive shallbe permitted where the authority having jurisdiction requires positive pressure to be maintained on thesuction piping.

4.15.9.2

When a low suction throttling valve a suction pressure regulating valve is used, it shall be installedaccording to manufacturers' recommendations in the piping between the pump and the discharge checkvalve.

4.15.9.3

The size of the low suction throttling the suction pressure regulating valve shall not be less than that givenfor discharge piping in Section 4.26.

4.15.9.4

The friction loss through a low suction throttling valve a suction pressure regulating valve in the fully openposition shall be taken into account in the design of the fire protection system.

4.15.9.5

System design shall be such that the low suction throttling valve the suction pressure regulating valve is inthe fully open position at system design point.


Make terminology consistant with industry and FM Approval Guide.Variable speed pressure limiting components are not installed on the fire pump discharge piping.



Public Input No. 15-NFPA 20-2013 [Section No. 3.3.57.2] Terminology modification




Street Address:

City:

State:

Zip:


Committee Statement




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29 of 201 1/13/2014 12:51 PM


4.15.9.5

System design shall be such that the low suction throttling valve is in the fully open position at the systemdesign point and at 100% of rated flow .


NFPA 20 requires operation and testing of a fire pump at the higher of the system demand or 100% of rated flow. The throttling valve must be fully open to accomplish this.




Street Address:

City:

State:

Zip:

Submittal Date: Mon Feb 11 17:52:32 EST 2013

Committee Statement







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4.18* Protection of System Components Against Pressure Surges.

4.18.1 The operation of the fire pump shall not result in excessive pressure surges

4.18.2 When required to prevent excessive pressure surges, a means of surge suppression shallbe installed

.


NFPA 20 currently does not address the issue of pressure surges that may result in broken pipe and/or system components.




Street Address:

City:

State:

Zip:


Committee Statement

Resolution: This is a complex issue that extends well beyond the jurisdiction of NFPA 20 and cannot be adequateresolved in NFPA 20. Suggest submitter address concerns with NFPA.





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4.18.1.2

Where a diesel engine fire pump is installed and where a total of 121 percent of the net rated shutoff(churn) pressure plus the maximum static suction pressure, adjusted for elevation, exceeds 125% of thepressure for which the system components are rated, a pressure relief valve shall be installed. Wheninstalled, the pressure relief valve shall be set to operate at a pressure at or below the pressure rating ofthe system components adjusted for elevation.


Under current requirements pressure relief valves are installed to protect against the failure of a variable speed pump or diesel engine overspeed. It is preferrable to subject system components to a limited pressure excess rather than installing a pressure relief valve that introduces another failure mode. Currently systems may be hydrostatically tested to 50 psi over there rated pressure and pressure relief valves are allowed by the testing standards to exceed the set pressure by 25%. 125% of rated pressure is well below the component safety factor and is a reasonable overpressurization to avoid pressure relief valves.




Street Address:

City:

State:

Zip:


Committee Statement

Resolution: A fire pump should not subject components to pressure in excess of their rating, even underabnormal conditions.





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4.18.1.3.1 Pressure relief valve shall be set at 10 psi above system rated pressure.

4.18.1.3.2 Where the variable speed pressure limiting controller or diesel pressure limiting driver allows apressure rise back to shutoff the pressure relief valve shall be set at 10 psi above the pressure at shutoff.



4.18.1.3.1_4.18.1.3.2.pdf Cover Sheet


Instability of the variable speed pressure limiting control can occur when the pressure relief valve is set too close to the set pressure of the variable speed pressure limiting control.


Submitter Full Name: KEVIN KUNKLER

Organization: CLARKE FIRE PROT PRODUCTS

Street Address:

City:

State:

Zip:

Submittal Date: Tue Jul 09 11:25:31 EDT 2013

Committee Statement


Statement: Add new section 4.18.1.3.1. Instability of the variable speed pressure limiting control can occur whenthe pressure relief valve is set too close to the set pressure of the variable speed pressure limitingcontrol.


I, KEVIN KUNKLER, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am KEVIN KUNKLER, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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4.18.2 Size.

The relief valve size shall be determined by one of the methods specified in 4.18.2.1 or 4.18.2.2 .

4.18.2.1

*

The relief valve shall be

permitted to be

sized hydraulically to

discharge sufficient

the minimum size that will flow sufficient water to prevent the pump discharge pressure, adjustedfor elevation, from exceeding the pressure rating of the system components.

4.18.2.2

If the relief valve is not sized hydraulically, the relief valve size shall not be less than that given in Section4.26 . (See also 4.18.7 and A.4.18.7 for conditions that affect size.)


Failure of an oversized pressure relief valve will divert all or a substantial amount of water from the fire protection system. Proper sizing of the pressure relief valve would provide more water to the fire protection system with a pressure relief valve failure. In general, pressure relief valve sized in Table 4.26(a) are: 1 size to larger than required for pressure relief valves discharging to atmosphere, the correct size for most pressure relief valves returned to suction, but may be undersized for pressure relief valves returned to suction when the water supply has a high static pressure.




Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 07 13:24:53 EST 2013

Committee Statement

Resolution: Having a table to let the user know the correct size without having to do calculations is extremelyadvantageous for NFPA 20 users.





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4.18.6.3

Relief valve discharge piping returning water back to the supply source, such as an aboveground storagetank, shall be run independently and not be combined with the discharge from other relief valves.



20_Yacine.pdf Cover sheet


We are operating oil & gas onshore based production and processing facilities. We have a firewater system, including fire water main covering different installations and equipments, a firewater tank, and three firewater pumps two electric pumps and one diesel with two jockey pumps for pressure maintenance. The firewater system in its current status is virtually designed in accordance to NFPA 20. First, with regard to NFPA 20, 4.18.9 we have no means to close the pressure relief valve in order to conduct fire pump performance test as required by NFPA 25, 8.3.3.3.2. In fact our relief valves don't have the option to be maintained closed in all flow conditions. Moreover, we cannot see the difference between a closed relief valve and a closed relief valve discharge. So we believe that installing shutoff valves in the discharge side of the relief valves will allow as accomplishing fire pump performance test in accordance to NFPA 20 and NFPA 25. Second, our relief valves discharge lines off of the three main pumps and the two jockey pumps are connected to a common discharge header which goes back to the bottom the storage tank (the supply source) which is not in accordance to NFPA 20, 4.18.6.3. Consequently we are not able to inspect or repair the pressure relief valves without isolating and shutting downt he whole firewater system for an extended period which in turn will compromise the safety of our installations. While it is not cost effective to run discharge piping returning water back tot he storage tank independently from each pump's pressure relief valve, installing shutoff valves in the discharge side of the pressure relief valves will permit us to inspect and maintain them without the need to isolate and shutdown the whole firewater system. We understand that the firewater system (our more important emergency response equipment) should be design engineered in such a way to prevent human errors (such as forgetting the shutoff valve in the closed position) from compromising its integrity nevertheless it is worthy noting that we are installing shutoff valves in the discharge of relief devices within other process equipments involving higher pressures with more hazardous fluids and it is permitted according to ASME Pressure Vessel Code, Section VIII, Appendix M, M-6 Stop Valves on the Discharge Side of a Pressure Relieving Device, and API RP 520, Part II, Section 4 Isolation (Stop) Valves in Pressure Relief Piping while, of course managing valves positions by procedures. So, why are we not allowed, as per NFPA 20, to do this within FW pumps?


Submitter Full Name: BENMOUSSA MOHAMED YACINE

Organization: SONARCO JV SONATRACH BP

Street Address:

City:

State:

Zip:

Submittal Date: Mon Jan 28 12:46:40 EST 2013

Committee Statement

Resolution: The NFPA 20 Committee does not want any valve in the pressure relief valve line that, if inadvertentlyclosed, could prevent the pressure relief valve from operating as intended. Manifolding of pressurerelief valve discharge piping is prohibited because of possible back pressure issues, and because this


35 of 201 1/13/2014 12:51 PM

arrangement require isolating multiple pumps to service a pressure relief valve. It is also noted thatinadvertently closed valves are more likely to be discovered in an active production system, than in astandby emergency mode, and a failure because of a closed valve in a production system hasdifferent consequences that a failure because of a closed valve in an emergency system.


I, BENMOUSSA MOHAMED YACINE, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and fullrights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understandand intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this oranother similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authorityto enter into this copyright assignment.

By checking this box I affirm that I am BENMOUSSA MOHAMED YACINE, and I agree to be legally bound by the above CopyrightAssignment and the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronicsignature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature


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4.18.6.3

Relief valve discharge piping returning water back to the supply source, such as an abovegroundstorage tank, shall be run independently and not be combined with the discharge from other reliefvalves other discharge piping .


Section 4.18.6.3 does not specifically prohibit connection of the relief valve discharge to the discharge of the pump's testing line.


Submitter Full Name: Sergio Linan

Organization: Zurich Insurance Company

Affilliation: Zurich Insurance Comany

Street Address:

City:

State:

Zip:

Submittal Date: Tue May 14 16:29:28 EDT 2013

Committee Statement

Resolution: The NFPA 20 Committee does see a problem with tying the pressure relief valve discharge piping intoan adequately sized pump test line downstream of all valves


I, Sergio Linan, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Sergio Linan, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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14.8.7.1.1 The circulation relief valve shall be set to open between 10 to 20 psi above the maximum firepump suction pressure.


Guidance is needed to assure that the circulation relief valve will operate when the pressure relief valve is open so that a cooling flow will occur.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: The proposed text update is needed to help clarify the operation of the circulating relief valve.Clarification of legislative language





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4.18.7.1

Where a pressure relief valve has been piped back to suction, a circulation relief valve sized in accordancewith 4.11.1.6 , Section 4.18.7 and A.14.18.7, and discharged to atmosphere shall be provideddownstream of the pressure relief valve. The circulating relief valve shall actuate below the opening setpoint of the pressure relief valve to insure cooling of the pump during churn operation.


The proposed text update is needed to help clarify the operation of the circulating relief valve.


Submitter Full Name: BILL HARVEY

Organization: HARVEY & ASSOCIATES, INC.

Affilliation: AFSA

Street Address:

City:

State:

Zip:

Submittal Date: Tue Jun 25 15:40:23 EDT 2013

Committee Statement


Statement: The proposed text update is needed to help clarify the operation of the circulating relief valve.Clarification of legislative language


I, BILL HARVEY, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am BILL HARVEY, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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4.18.7.2

Where pump discharge water , or pressure relief valve water is piped back to pump suction and thepump is driven by a diesel engine with heat exchanger cooling, a high cooling water temperature signal at104ºF (40ºC) from the engine inlet of the heat exchanger water supply shall be sent to the fire pumpcontroller, and the controller shall stop the engine provided that there are no active emergencyrequirements for the pump to run.

4.18.7.2.1

The requirements of 4.18.7.2 shall not apply when pump discharge and the pressure relief valve, ifused, water is being piped back to a water storage reservoir.



4.18.7.2.pdf Cover Sheet


A pressure relief valve is often adjusted improperly and is the problem allowing premature flow. Sometimes this flow is extremely high volume resulting in high water temperatures.


Submitter Full Name: JOHN WHITNEY

Organization: CLARK FIRE PROT PRODUCTS INC

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jul 11 09:06:37 EDT 2013

Committee Statement

Resolution: Change not needed. Fire pump discharge includes pressure relief valve.


I, JOHN WHITNEY, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am JOHN WHITNEY, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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Public Input No. 179-NFPA 20-2013 [ Section No. 4.18.7.2 [Excluding any Sub-Sections]

]

Where pump discharge water is piped back to pump suction and the pump is driven by a diesel engine withheat exchanger cooling, a high cooling water temperature signal at 104ºF (40ºC) from the engine inlet ofthe heat exchanger water supply shall be sent to the fire pump controller, and the controller shall stop theengine provided that there are no active emergency requirements for the pump to run.



11.2.4.4.8_4.18.7.2.pdf Cover Sheet


To provide the requirements of the signal from the engine to support the requirements of 12.4.1.4(11). We are removing the prescriptive requirement of 104°F (40°C) and making it a performance based requirement of the engine manufacturer.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: To provide the requirements of the signal from the engine to support the requirements of 12.4.1.4(11).We are removing the prescriptive requirement of 104°F (40°C) and making it a performance basedrequirement of the engine manufacturer.





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4.18.9 Shutoff Valve.

A shutoff valve shall not be installed in the relief valve supply piping. However, a shutoff valve may beplaced on the discharge side of the pressure relief valve so that it can be temporarily closed for thepurpose of the pump performance test (see NFPA 25, 8.3.3.3.2 and Annex A, A.8.3.3.3) . Such a shutoffvalve shall have the possibility be locked and sealed in either open or discharge piping closed position,and it shall be controlled by procedure. Furthermore, this shutoff valve can be closed to isolate the pumpand its pressure relief valve from a common discharge header which permits the pressure relief device tobe inspected, maintained, or repaired without shutting down the whole fire water system .



20_Yacine.pdf Cover Sheet


We are operating oil & gas onshore based production and processing facilities. We have a firewater system, including fire water main covering different installations and equipments, a firewater tank, and three firewater pumps two electric pumps and one diesel with two jockey pumps for pressure maintenance. The firewater system in its current status is virtually designed in accordance to NFPA 20. First, with regard to NFPA 20, 4.18.9 we have no means to close the pressure relief valve in order to conduct fire pump performance test as required by NFPA 25, 8.3.3.3.2. In fact our relief valves don't have the option to be maintained closed in all flow conditions. Moreover, we cannot see the difference between a closed relief valve and a closed relief valve discharge. So we believe that installing shutoff valves in the discharge side of the relief valves will allow as accomplishing fire pump performance test in accordance to NFPA 20 and NFPA 25. Second, our relief valves discharge lines off of the three main pumps and the two jockey pumps are connected to a common discharge header which goes back to the bottom the storage tank (the supply source) which is not in accordance to NFPA 20, 4.18.6.3. Consequently we are not able to inspect or repair the pressure relief valves without isolating and shutting downt he whole firewater system for an extended period which in turn will compromise the safety of our installations. While it is not cost effective to run discharge piping returning water back tot he storage tank independently from each pump's pressure relief valve, installing shutoff valves in the discharge side of the pressure relief valves will permit us to inspect and maintain them without the need to isolate and shutdown the whole firewater system. We understand that the firewater system (our more important emergency response equipment) should be design engineered in such a way to prevent human errors (such as forgetting the shutoff valve in the closed position) from compromising its integrity nevertheless it is worthy noting that we are installing shutoff valves in the discharge of relief devices within other process equipments involving higher pressures with more hazardous fluids and it is permitted according to ASME Pressure Vessel Code, Section VIII, Appendix M, M-6 Stop Valves on the Discharge Side of a Pressure Relieving Device, and API RP 520, Part II, Section 4 Isolation (Stop) Valves in Pressure Relief Piping while, of course managing valves positions by procedures. So, why are we not allowed, as per NFPA 20, to do this within FW pumps?


Submitter Full Name: BENMOUSSA MOHAMED YACINE

Organization: SONATRACH

Street Address:

City:

State:

Zip:

Submittal Date: Thu Jan 24 10:59:52 EST 2013


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Committee Statement

Resolution: The NFPA 20 Committee does not want any valve in the pressure relief valve line that, if inadvertentlyclosed, could prevent the pressure relief valve from operating as intended. Manifolding of pressurerelief valve discharge piping is prohibited because of possible back pressure issues, and because thisarrangement require isolating multiple pumps to service a pressure relief valve. It is also noted thatinadvertently closed valves are more likely to be discovered in an active production system, than in astandby emergency mode, and a failure because of a closed valve in a production system hasdifferent consequences that a failure because of a closed valve in an emergency system.


I, BENMOUSSA MOHAMED YACINE, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and fullrights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understandand intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this oranother similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authorityto enter into this copyright assignment.

By checking this box I affirm that I am BENMOUSSA MOHAMED YACINE, and I agree to be legally bound by the above CopyrightAssignment and the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronicsignature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature


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4.19.1.2

Within 20 seconds after a demand to start, pumps in series shall supply and maintain a stable dischargepressure (±10 percent) throughout the entire range of operation.

4.19.1.2.1

The discharge pressure shall be permitted to be adjusted and restabilized whenever the flow conditionchanges.

Move 4.19.1.2 to section 10.10.10.4 and 11.2.4.3.4 and renumber accordingly.



20_Stelter_various.pdf Cover Sheet


Applies to all uses of variable speed applications, not just series pumping.


Submitter Full Name: William Stelter

Organization: Master Control Systems, Inc.

Street Address:

City:

State:

Zip:


Committee Statement


Statement: Reworded 4.19.1.2.1 to allow for changes in pressure associated with changes in pump flow. Therequirements need to remain with series pumping but should be repeated in chapters 10 and 11.


I, William Stelter, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am William Stelter, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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4.19.2.1

No more than three pumps shall be allowed to operate in series.

See uploaded file.



20_PI8_Rec_from_Amendment.pdf ROP & ROC Text from Amendment

20_PI8_Fig_A.4.19.2.1.docx Figure A.4.19.2.1


Note: The following proposal 20-46 and comments 20-25 and 20-27 were returned to Committee at the 2012 Association Technical Meeting and/or subsequent Standards Council Meeting. In accordance with 4.7.1(d) and 4.7.2(c) of the Regulations Governing Committee Projects, it is now being processed as a Proposal for this revision cycle.

This proposal 20-46 and comments 20-25 and 20-27 were returned to Committee at the A2012 Association Technical Meeting and/or subsequent Standards Council Meeting. In accordance with 4.7.1(d) and 4.7.2(c) of the Regulations Governing Committee Projects, it is now being processed as a Proposal for this revision cycle. NOTE: This public input was also developed by the Technical Committee on Fire Pumps.



Organization: Aon Fire Protection Engineering

Street Address:

City:

State:

Zip:

Submittal Date: Fri Jan 25 12:58:57 EST 2013

Committee Statement


Statement: The revision incorporates the communication and connectivity requirements for pumps in series notlocated in the same pump room developed during the ROC stage last cycle. Removes therequirement that the pump suction needs to be flooded.





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20_L3_Figure A.4.19.2.1 Rec & Sub from Amendment

Figure A.4.19.2.1 Series Fire Pump Unit with Discharge from First Pump Feeding the Low Zone Fire Protection Systems



4.19.2.5 Fire pumps that operate in series that are not located in the same room shall comply with thefollowing.

1) No more that two pumps shall operate in series.

2) Each pump shall be arranged so that it can be manually stopped or started from the other pump room.

3) The suction and discharge pressures from each pump shall be displayed in the other pump room.

4) All trouble signals from each pump shall be displayed in the other pump room.


Communicating between fire pump rooms is difficult. Operating pumps simultaneously in separate rooms requires one operator to know the conditions at both pumps. Low suction pressure at the remote pump should be responded to immediately to prevent damage to the fire pump. Remote operation capability allows a fire to act when possible, or warn firefighters that are depending on the water supply of abnormal pumping conditions.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: The revision incorporates the communication and connectivity requirements for pumps in series notlocated in the same pump room developed during the ROC stage last cycle. Removes therequirement that the pump suction needs to be flooded.





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4.20.2.11Where a metering device is installed in a loop arrangement, a circulation relief valve sized inaccordance with 4.11.1.6 that is set to operate between 10 to 20 psi above the maximum fire pump suctionpressure and discharged to atmosphere shall be provided downstream of the metering device.


A heat buildup will occur in the water when flowing water through a closed test loop and a circulation relief valve that operates at a lower pressure that the fire pump circulation relief valve is needed to provide cooling. Placing the circulation relief valve downstream of the metering device allows the metering device to show the full flow.




Street Address:

City:

State:

Zip:

Submittal Date: Fri Mar 15 16:21:50 EDT 2013

Committee Statement

Resolution: Heating should not be a problem if the duration of the test is not excessive.





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4.25.1 Pressure maintenance pumps are not required. When used, they shall comply with 4.25.2through 4.25.4.





The addition of new 4.25.1 clarifies in the standard that the pressure maintenance pump in not required as indicated in A.4.25. It presently states: A.4.25 Pressure maintenance (jockey or make-up) pumps should be used where it is desirable to maintain a uniform or relatiively high pressure on the fire protection system.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Add new section 4.25.1 and renumber subsequent sections. The addition of new 4.25.1 clarifies inthe standard that pressure maintenance is required for pressure-actuated fire pumps however, apressure maintenance pump may not necessarily be required and that other forms of pressuremaintenance may be used. This is supported by the annex language of A.4.25 which reads asfollows: "Pressure maintenance (jockey or make-up) pumps should be used where it is desirable tomaintain a uniform or relatively high pressure on the fire protection system".





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4.25.5.4

A check valve and isolation valve shall be installed in the discharge pipe. The check valve shall beinstalled as close to the discharge side of the pump as possible and as far away from the isolation valve aspossible to mitigate water hammer in the discharge piping.


The mitigation of water hammer extends the life of pressures sensing devices in the jockey pump controller. Since the pressure sensing line should be connected to the piping as far away as possible from the check valve which is generating the water hammer, it is logical to install the check valve as close to the discharge side of the pump as possible.




Street Address:

City:

State:

Zip:


Committee Statement

Resolution: Statement not enforceable and does not represent field conditions





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4.25.5.6

The pressure sensing line for the pressure maintenance pump shall be in accordance with Section 4.30and shall be connected to the piping as far away as possible from the check valve .


Mitigation of water hammer generated by the check valve extends the life of the pressure sensing devices in the controller. The further away the pressure sensing line connection is from the check valve generating the water hammer (or spikes) the better.




Street Address:

City:

State:

Zip:


Committee Statement

Resolution: Statement not enforceable and does not represent field conditions.





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4.27.4.6 Where a backflow prevention device is retroactively installed in the suction piping, all ofthe following shall be performed:

(1) Hydraulic calculations shall be performed to insure conformance with section 4.27.4.2.

(2) The location of the backflow device shall comply with 4.27.3.

(3) Hydraulic calculations shall be performed to insure that the discharge pressure from the fire pump issufficient to meet the demand(s) of the fire protection system(s) supplied by the pump.

4.27.4.7 Where a backflow prevention device is retroactively installed in the discharge piping, hydrauliccalculations shall be performed to insure that the discharge pressure from the pump is sufficient to meet thedemand(s) of the fire protection system(s) supplied by the pump.


Retrofit of backflow preventers is common on fire pump systems. When the backflow device is installed on the suction side, we need to make sure that the backflow device does not impair the fire pump and that the backflow device will not impair the fire protection system. When the backflow device is installed on the discharge side, we need to make sure that it does not impair the fire protection system.

These same requriements are in other NFPA standards, but the scope of NFPA 20 keeps the suction and discharge piping out of the scope of other standards, so techncially, they don't apply. Therefore, these requirements need to be included in NFPA 20 so that they apply whenever a backflow device is retrofitted on suction or discharge piping.




Affilliation: NFSA E&S Committee

Street Address:

City:

State:

Zip:

Submittal Date: Wed Jun 05 11:58:17 EDT 2013

Committee Statement


Statement: Retrofit of backflow preventers is common on fire pump systems. When the backflow device isinstalled on the suction side, we need to make sure that the backflow device does not impair the firepump and that the backflow device will not impair the fire protection system. When the backflowdevice is installed on the discharge side, we need to make sure that it does not impair the fireprotection system. These same requirements are in other NFPA standards, but the scope of NFPA 20keeps the suction and discharge piping out of the scope of other standards, so technically, they don'tapply. Therefore, these requirements need to be included in NFPA 20 so that they apply whenever abackflow device is retrofitted on suction or discharge piping.


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Public Input No. 94-NFPA 20-2013 [ Section No. 4.31 ]

4.31 Break Tanks.

Where a break tank is used to provide the pump suction water supply, the installation shall comply withSection 4.31.

4.31.1 Application.

Break tanks shall be used for one or more of the following reasons:

(1) As a backflow prevention device between the water supply and the fire pump suction pipe

(2) To eliminate fluctuations in the water supply pressure and provide a steady suction pressure to thefire pump

(3) To provide a quantity of stored water on site where the normal water supply will not provide therequired quantity of water required by the fire protection system

4.31.2 Break Tank Size.

The tank shall be sized for a minimum duration of 15 minutes with the fire pump operating at 150 percentof rated capacity.

4.31.3 Refill Mechanism.

The refill mechanism shall be listed and arranged for automatic operation.

4.31.3.1

If the break tank capacity is less than the maximum system demand for 30 minutes, the refill mechanismshall meet the requirements in 4.31.3.1.1 through 4.31.3.1.5 .

4.31.3.1.1

Dual automatic refill lines, each capable of refilling the tank at a minimum rate of 150 percent of the firepump(s) capacity, shall be installed.

4.31.3.1.2

If available supplies do not permit refilling the tank at a minimum rate of 150 percent of the rated pumpcapacity, each refill line shall be capable of refilling the tank at a rate that meets or exceeds 110 percent ofthe maximum fire protection system design flow.

4.31.3.1.3

A manual tank fill bypass designed for and capable of refilling the tank at a minimum rate of 150 percent ofthe fire pump(s) capacity shall be provided.

4.31.3.1.4

If available supplies do not permit refilling the tank at a minimum rate of 150 percent of the rated pumpcapacity, the manual fill bypass shall be capable of refilling the tank at a rate that meets or exceeds 110percent of the maximum fire protection system design flow.

4.31.3.1.5

A local visible and audible low liquid level signal shall be provided in the vicinity of the tank fill mechanism.

4.31.3.2

If the break tank is sized to provide a minimum duration of 30 minutes of the maximum system demand,the refill mechanism shall meet the requirements in 4.31.3.2.1 and 4.31.3.2.2 .


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4.31.3.2.1

The refill mechanism shall be designed for and capable of refilling the tank at 110 percent of the raterequired to provide the total fire protection system demand [110% × (total demand - tank capacity) /duration].

4.31.3.2.2

A manual tank fill bypass shall be designed for and capable of refilling the tank at 110 percent of the raterequired to provide the total fire protection system demand [110% × (total demand - tank capacity) /duration].

4.31.3.3 The pipe between the municipal connection and the automatic fill valve shall be installed inaccordance with

NFPA

24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances . 4.31.3.4

The automatic filling mechanism shall be maintained at a minimum temperature of 40°F (4.4°C).

4.31.3.5

The automatic filling mechanism shall activate a maximum of 6 in. (152 mm) below the overflow level.

4.31.4 Installation Standard.

The break tank shall be installed in accordance with NFPA

22, Standard for Water Tanks for Private Fire Protection .


The requirements for Break Tanks has been picked up in the 2013 edition of NFPA 22 and should be removed from NFPA 20.




Street Address:

City:

State:

Zip:

Submittal Date: Tue Jun 18 18:08:30 EDT 2013

Committee Statement


Statement: The requirements for Break Tanks has been picked up in the 2013 edition of NFPA 22 and should beremoved from NFPA 20.





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5.5 Auxiliary Power.

Where electric motors are used and the height of the structure is beyond the pumping capability of the firedepartment apparatus , a reliable emergency source of power in accordance with Section 9.6 shall beprovided for the fire pump installation and pressure maintenance pump installation .


NFPA 101 and NFPA 5000 require that fire pumps and pressure maintenance pumps in new high-rise buildings be connected to a standby power system. As such, the PI coordinates NFPA 20 with NFPA 101 and NFPA 5000.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Eliminating the structure height aligns NFPA 20 with 101 and 5000 requirements but the committeedid not see a reason to require the pressure maintenance pump to be on auxiliary power as it is not arequired system component and therefore is not an essential part of the system.





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6.2.1.1 Each impeller in a multiple stage multiple port pump shall l furnish not less than 150 percent of ratedcapacity at not less than 65 percent of total rated head. (See Figure A.6.2.)





Public Input No. 83-NFPA 20-2013 [New Section after 6.2.2]




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of multiple stage multiple port fire pump requirements





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6.2.2.1 For each impeller in a multiple stage multiple port pump, the shutoff headshall not exceed 140 percent of rated head for any type pump. (See Figure A.6.2.)






Street Address:

City:

State:

Zip:


Committee Statement


Statement: Part of multiple stage multiple port fire pump requirements. Modified to maintain consistentterminology.





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Public Input No. 165-NFPA 20-2013 [ Sections 6.5.1.1, 6.5.1.2 ]

Sections 6.5.1.1, 6.5.1.2

6.5.1.1

Separately coupled–type pumps with electric motor or diesel engine drivers shall be connected by aflexible coupling or flexible connecting shaft.

6.5.1.2

All coupling types shall be listed for the service referenced in 6.5.1.1 . specifically for electric motoror diesel drive or both for fire pumps.



6.5.1.1_and_others.pdf Cover Sheet


There are no new requirements proposed in any of the proposed changes, only relocation of requirements to provide improved clarity and user friendliness.New par. Numbers as shown above.6.5.1.1 Relocation requirements from 11.2.3.1.1 to provide a single place in the standard defining the coupling requirement for separately coupled pumps.6.5.1.2 Modified to provide more clarity of listing requirements of flexible couplings and flexible connecting shafts for electric motor or diesel pump drivers.7.5.1.8.1 Relocation of requirements from Chapter 11 to Chapter 7 where other vertical turbine pump drive where other vertical turbine pump drive requirements are located.7.5.1.8.2 Renumber. Plus change text for clarity.7.5.1.8.3 Renumber.11.2.3.1 This section now applies to the engine power take-off connection for all types of pumps.11.2.3.1.1 Provide clarity that this requiremetn does not apply to vertical shaft engines that area are allowed for VT pumps, and add torsional damping coupling which is a requirement of 7.5.1.6.4.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Modified to clarify intent.


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6.5.1.3 Shafts shall not be listed if motor meets criteria of 9.5.1.2.





Section 9.5.1.2 allows the use of non-listed motor. Section 6.5 states that the coupling between the non-listed motor and the listed pump must be listed. No coupling exists for this connection. Suggestion is to add text to allow pump and coupling to be not listed if the motor meets the exemption listed in 9.5.1.2.




Street Address:

City:

State:

Zip:


Committee Statement

Resolution: The committee wants the flexible shaft and flexible coupling to be listed.





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6.5.1.3 Shafts shall not be listed if motor meets criteria of 9.5.1.2.



20_Apida.pdf Cover Sheet


Section 9.5.1.2 allows the use of a non-listed motor. Section 5.5 states that the coupling between the non-listed motor and the listed pump must be listed. No coupling exists for this connection. Suggestion is to add text to allow pump and coupling to be not listed if the motor meets the exemption listed in 9.5.1.2.


Submitter Full Name: James Apida

Organization: B&V

Street Address:

City:

State:

Zip:

Submittal Date: Fri Jul 12 07:57:03 EDT 2013

Committee Statement

Resolution: The committee wants the flexible shaft and flexible coupling to be listed.


I, James Apida, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am James Apida, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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7.1.1 * Suitability Application .

Where the water supply is located below the discharge flange centerline and the water supply pressure isinsufficient for getting the water to the fire pump, a vertical shaft turbine–type pump shall be used.


Consistency with Section 6.1.2. If the Committee prefers "suitability" then revise Section 6.1.2. It should be noted that Chapter 8 uses both suitability and application and the statement in Chapter 7 seems to be more closely related to the application statement in Chapter 8.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Consistency with Section 6.1.2. If the Committee prefers "suitability" then revise Section 6.1.2. Itshould be noted that Chapter 8 uses both suitability and application and the statement in Chapter 7seems to be more closely related to the application statement in Chapter 8.





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7.1.2 Characteristics Factory and Field Performance .

7.1.2.1

Pumps shall furnish not less than 150 percent of rated capacity at a total head of not less than 65 percentof the total rated head. (See Figure A.6.2 .)

7.1.2.2

The total shutoff head shall not exceed 140 percent of the total rated head on vertical turbine pumps.(See Figure A.6.2 .)


Consistency with 6.2. If the Committee prefers "Characteristics", then revise 6.2.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Consistency with 6.2. If the Committee prefers "Characteristics", then revise 6.2.





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Public Input No. 166-NFPA 20-2013 [ Sections 7.5.1.8.1, 7.5.1.8.2 ]

Sections 7.5.1.8.1, 7.5.1.8.2

7.5.1.8.1

Unless the requirements of 7.5.1.4 are met, engines shall be connected to the right-angle gear drive with alisted flexible connecting shaft that will prevent undue strain on either the engine or gear drive. (mostly from11.2.3.2.1)

7.5.1.8.2 The flexible connecting shaft shall be listed for this diesel fire pump service.

7.5.1.8. 2 3

The operating angle for the flexible connecting shaft shall not exceed the limits specified by themanufacturer for the speed and horsepower transmitted under any static or operating conditions.









Street Address:

City:

State:

Zip:


Committee Statement


Statement: There are no new requirements proposed in any of the proposed changes, only relocation ofrequirements to provide improved clarity and user friendliness. New par. Numbers as shown above.6.5.1.1 Relocation requirements from 11.2.3.1.1 to provide a single place in the standard defining thecoupling requirement for separately coupled pumps. 6.5.1.2 Modified to provide more clarity of listingrequirements of flexible couplings and flexible connecting shafts for electric motor or diesel pump


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drivers. 7.5.1.8.1 Relocation of requirements from Chapter 11 to Chapter 7 where other verticalturbine pump drive where other vertical turbine pump drive requirements are located. 7.5.1.8.2Renumber. Plus change text for clarity. 7.5.1.8.3 Renumber. 11.2.3.1 This section now applies to theengine power take-off connection for all types of pumps. 11.2.3.1.1 Provide clarity that thisrequiremetn does not apply to vertical shaft engines that area are allowed for VT pumps, and addtorsional damping coupling which is a requirement of 7.5.1.6.4.





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8.5.3.1

For foam concentrate pumps, safety relief valves shall be piped to return the valve discharge to theconcentrate supply tank or to the pump suction.


This new section harmonizes the requirements for pressure relief valves for positive displacement foam concentrate pumps and positive displacement watermist pumps. Section 8.5.4 makes allowance for the relief valve discharge to be piped to the pump suction as long as a means of thermal relief is provided. NFPA 11 makes no such restriction on positive displacement foam concentrate pumps and illustrates piping the relief valve to the pump suction in Figures A.3.3.23.1 and A.3.3.23.1.1(a).



Public Input No. 103-NFPA 20-2013 [Section No. 8.5.3] Addressing the same inconsistency


Submitter Full Name: Craig Cook

Organization: Tyco Fire Protection Products

Street Address:

City:

State:

Zip:


Committee Statement


Statement: Adding allowance for safety relief valve to be piped to tank return line since tank connections areoften limited. Revision to annex material required to correlate code material and annex material. Seenew annex details.


I, Craig Cook, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am Craig Cook, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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8.5.3.2

A means of preventing overheating shall be provided when the relief valve is plumbed to discharge to thepump suction.


Section 8.5.3.2 harmonizes the requirements for relief valves used with positive displacement foam concentrate pumps with those for relief valves used with positive displacement watermist pumps.



Public Input No. 103-NFPA 20-2013 [Section No. 8.5.3] Addresses the same inconsistency

Public Input No. 104-NFPA 20-2013 [New Section after 8.5.3] Addresses the same inconsistency




Street Address:

City:

State:

Zip:


Committee Statement







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8.5.3 * Relief Valves for Foam Concentrate Pumps.

For foam concentrate pumps, safety relief valves shall be piped to return the valve discharge to theconcentrate supply tank.


Section 8.5.3 is inconsistent in its requirements with Section 8.5.4 for the same type of pump and is also inconsistent with what is required by and illustrated in NFPA 11. Sections 8.5.3 and 8.5.4 both detail safety relief valve requirements for positive displacement pumps but 8.5.4 makes allowance for piping of the relief valve discharge to the suction side of the pump. NFPA 11 states in section 9.1.2 that positive displacement pumps shall be provided with a means of pressure relief from the discharge to the supply side of the circuit. No location on the supply side of the circuit is specifically prohibited for the relief valve discharge to be piped to. Figures A.3.3.23.1 and A.3.3.23.1.1(a) on page 11-43 of the 2010 Edition of NFPA 11 both illustrate a positive displacement foam pump with the safety relief valve discharge piped to the pump suction, in direct conflict with Section 8.5.3 of NFPA 20. Positive displacement pumps for use with foam and watermist have no substantial differences and, frequently, the same makes and models of pumps are used for both applications. There is no sound technical reason for safety relief valves for positive displacement pumps used with foam concentrate to have different piping requirements than those used for watermist applications.




Street Address:

City:

State:

Zip:


Committee Statement







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9.2.3

For fire pump installations using the arrangement of 9.2.2 (1), 9.2.2 (2), 9.2.2 (3), or 9.2.2 (5) for thenormal source of power, no more than one disconnecting means and associated overcurrent protectiondevice shall be installed in the power supply to the fire pump controller.The overcurrent protection required by 10.8.2.2(2) and isolating switch required by 10.8.2.2(4) for an

individually listed power transfer switch when provided in the same enclosure as the power transferswitch, shall not be considered the one disconnecting means and associated overcurrent protectiondevice for the purpose of complying with 9.2.3.

9.2.3. 1

Where the disconnecting means permitted by 9.2.3 is installed, the disconnecting means shall meet allof the following:

(1) They shall be identified as being suitable for use as service equipment.

(2) They shall be lockable in the closed position.

(3)

(4)

(5) They shall be marked “Fire Pump Disconnecting Means” in letters that are no less than 1 in. (25mm) in height and that can be seen without opening enclosure doors or covers.

9.2.3.2

Where the disconnecting means permitted by 9.2.3 is installed, a placard shall be placed adjacent to thefire pump controller stating the location of this disconnecting means and the location of any key needed tounlock the disconnect.

9.2.3.3

Where the disconnecting means permitted by 9.2.3 is installed, the disconnect shall be supervised inthe closed position by one of the following methods:

(1) Central station, proprietary, or remote station signal device

(2) Local signaling service that will cause the sounding of an audible signal at a constantly attendedlocation

(3) Locking the disconnecting means in the closed position

(4) Sealing of disconnecting means and approved weekly recorded inspections where thedisconnecting means are located within fenced enclosures or in buildings under the control of theowner

9.2.3.4

Where the overcurrent protection permitted by 9.2.3 is installed, the overcurrent protection device shallbe rated to carry indefinitely the sum of the locked rotor current of the largest pump motor and the full-loadcurrent of all of the other pump motors and accessory equipment.

9.2.3.4.1

Alternately, compliance with 9.2.3.4 shall be based on an assembly listed for fire pump servicecomplying with the following:

(1) The overcurrent protection device shall not open within 2 minutes at 600 percent full load current.

(2) The overcurrent protection device shall not open with a restart transient of 24 times the full loadcurrent.

(3) The overcurrent protection device shall not open within 10 minutes at 300 percent full loadcurrent.

(4) Trip point for circuit breakers not field adjustable.

* They shall be located remote from other building disconnecting means.

* They shall be located remote from other fire pump source disconnecting means.


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nfpapublicinputform_Kovacik2.docx Cover Sheet


The term “Listed fire pump power transfer switch assembly” was added to Appendix A of the 2013 Edition of NFPA 20, but not referred to in the body of the standard. Reference Figure A.10.8, Arrangement II. The intent was to recognize the use of a fire pump power transfer switch assembly which could include an isolating switch and overcurrent protection for the transfer switch in the same enclosure as the transfer switch. As a fire pump transfer switch is required to be located in the pump room, the overcurrent protection and isolating switch, when provided as part of the transfer switch assembly, would not be remote from the fire pump controller. When the subject of a transfer switch assembly was discussed during the last code cycle, it was anticipated that the overcurrent protection and isolating switch, when provided as part of the transfer switch assembly would not be the one disconnecting means and associated overcurrent protection device permitted by 9.2.3. In order to allow an additional disconnecting means and associated overcurrent protection device to be remote from the pump room in such installations, the added text is necessary.


Submitter Full Name: John Kovacik

Organization: UL LLC

Street Address:

City:

State:

Zip:


Committee Statement


Statement: The term “Listed fire pump power transfer switch assembly” was added to Appendix A of the 2013Edition of NFPA 20, but not referred to in the body of the standard. Reference Figure A.10.8,Arrangement II. The intent was to recognize the use of a fire pump power transfer switch assemblywhich could include an isolating switch and overcurrent protection for the transfer switch in the sameenclosure as the transfer switch. As a fire pump transfer switch is required to be located in the pumproom, the overcurrent protection and isolating switch, when provided as part of the transfer switchassembly, would not be remote from the fire pump controller. When the subject of a transfer switchassembly was discussed during the last code cycle, it was anticipated that the overcurrent protectionand isolating switch, when provided as part of the transfer switch assembly would not be the onedisconnecting means and associated overcurrent protection device permitted by 9.2.3. In order toallow an additional disconnecting means and associated overcurrent protection device to be remotefrom the pump room in such installations, the added text is necessary. The addition of section9.2.3.4.2 reflects NEC CMP-13 Comment actions 13-37, Log #434 pertaining to (695.3 (F)).


I, John Kovacik, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am John Kovacik, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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9.2.3.1

Where the disconnecting means permitted by 9.2.3 is installed, the disconnecting means shall meet allof the following:

(1) They shall be identified as being suitable for use as service equipment.

(2) They shall be lockable in both the closed position and open positions .

(3)

(4)

(5) They shall be marked “Fire Pump Disconnecting Means” in letters that are no less than 1 in. (25mm) in height and that can be seen without opening enclosure doors or covers.



9.2.3.1_2_.pdf Cover Sheet


The ability to lock a disconnecting switch in the closed position (now a requirement) is to prevent inadvertent disconnection and the ability to lock the isolating switch in the open position is to provide safety when servicing the controller and motor circuits. It is a requirement in 76.4, UL 508 (a Normative reference from UL 218) and will permit lock-out/tag-out as required in NFPA 70E.


Submitter Full Name: Richard Schneider

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:


Committee Statement



* They shall be located remote from other building disconnecting means.

* They shall be located remote from other fire pump source disconnecting means.


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I, Richard Schneider, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyrightin this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Richard Schneider, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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9.2.3.4.2 Overcurrent Device Selection. An instantaneous trip circuit breaker shall bepermitted in lieu of the overcurrent devices specified in 10.8.2.2(2) provided it is part of a transferswitch assembly listed for fire pump service.



9.2.3.4.2-10.8.2.2_2_.pdf Cover Sheet


This change reflects NEC CMP-13 Comment actions 13-37, Log #434 pertaining to (695.3(F)).


Submitter Full Name: James Daly


Street Address:

City:

State:

Zip:


Committee Statement




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I, James Daly, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. Except to the extent that I may lack authority to make an assignment of content identified above, I hereby warrant that I amthe author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am James Daly, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature

Origin (from sources other than the submitter)

Source of some text is from the NEC 2013 Annual Revision Cycle ROC Comment 13-37.


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9.2.3.4.2 Overcurrent Device Selection. An instantaneous trip circuit breaker shall bepermitted in lieu of the overcurrent devices specified in 10.8.2.2(2) provided it is part of a transferswitch assembly listed for fire pump service.



9.2.3.4.2-10.8.2.2_2_.pdf Cover Sheet


These changes are to reflect NEC CMP-13 comment actions 13-37, Log #434 pertaining to (695.3(F)).




Street Address:

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Zip:


Committee Statement




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I, Richard Schneider, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyrightin this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. Except to the extent that I may lack authority to make an assignment of content identified above, I hereby warrantthat I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.



Source of some text is from the NEC 2013 Annual Revision Cycle ROC comment 13-37.


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9.3.1

Except for an arrangement described in 9.3.3 , at least one alternate source of power shall beprovided where for high-rise buildings or where the height of the structure is beyond the pumpingcapacity of the fire department apparatus.


Coordination with NFPA 101 and NFPA 5000 and the Public Input submitted on Section 5.5.




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Committee Statement


Statement: Coordination with NFPA 101 and NFPA 5000 and the Public Input submitted on Section 5.5.





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9.5.1.1

All motors shall comply with NEMA MG-1, Motors and Generators , shall be marked as complyingwith NEMA Design B standards for three phase motors , NEMA Desig N or L standards for singlephase motors, and shall be specifically listed for fire pump service. (See Table Tables 9.5.1.1 (a)and 9 . 5.1.1(b ) .)

Revise Table 9.5.1.1 and split into two tables as shown in the uploaded file.

Table 9.5.1.1 Horsepower and Locked Rotor Current Motor Designation for NEMA Design B Motors

Rated

Horsepower

Locked Rotor Current Three-Phase

460 V (A)

MotorDesignation

( NFPA70 ,

LockedRotor

IndicatingCode

Letter) “F”to and

Including

5 46 J

7 1 ? 2 64 H

10 81 H

15 116 G

20 145 G

25 183 G

30 217 G

40 290 G

50 362 G

60 435 G

75 543 G

100 725 G

125 908 G

150 1085 G

200 1450 G

250 1825 G

300 2200 G

350 2550 G

400 2900 G

450 3250 G

500 3625 G



9.5.1.1.docx Cover Sheet

Tables_9.5.1.1_a_and_b_.doc Tables 9.5.1.1(a) & (b) PI 157


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This proposal is summarized as follows;1. Table 9.5.1.1 is being revised to correct values to represent current motor design and construction.2. Table 9.5.1.1 is being revised to add motors with three phase horsepower ratings not currently in the table.3. Table 9.5.1.1 is being revised and split into two tables, Tables 9.5.1.1 (a) and (b). Table 9.5.1.1 (a) will be the existing Table 9.5.1.1 (revised per items 1 and 2 above) and cover three phase motors. Table 9.5.1.1 (b) will be a new table covering single phase motors which are not currently covered by NFPA 20.4. Clause 9.5.1.1 is being revised to specify and differentiate the NEMA motor designs for three and single phase motors. 5. The source documents for values inserted in the tables are UL 1004-5 for three phase motors and NEMA MG-1 for single phase motors.

The following is background information relating to these changes.

1. There are no NEMA Design B standards for single-phase motors. UL 1004-5 does not cover single phase motors.2. MG1 has tables which lists the maximum limit on locked rotor currents for single phase motors. There are tables for small and medium motors. For the Design N (small) and Design L (medium) types the limit on LRA at 230 volts is NOT one-half of that at 115 volts.3. The values of locked rotor amps given in the tables in MG1 standards are upper limits.4. Design B performance standards for 3 phase medium motors in NEMA MG1 begin at a minimum rating of 1/2 hp. However, that is 1/2 hp at 900 RPM synchronous speed (8 poles) and slower speeds at 60 Hz. There are no NEMA Design B 1/2 hp motors in 2, 4, or 6 poles. Similarly, the Design B standard applies to 3/4 hp and higher at 1200 RPM (6 pole) and slower speeds (higher number of poles) 1 Hp and higher at 1800 RPM (4 poles) and slower speeds 1-1/2 Hp and higher at 3600 RPM (2 pole) and slower speeds. If a fire pump application requires the use of a 2, 4, or 6 pole polyphase motor rated 1/2 hp, it cannot be a NEMA Design B motor since such a motor does not exist.5. NFPA 20, Table 9.5.1.1 “Horsepower and Locked Rotor Current Motor Designation for NEMA Design B Motors” has errors for certain locked rotor amps and locked rotor code letters. UL 1004-5 has Tables with the correct values and should be used as a guide for revising Table 9.5.1.1.6. NFPA 20, Table 9.5.1.1 should be revised to add hp ratings below 5 hp. The lower limit should be 1 hp which is the smallest 3 phase NEMA Design B motor. 7. A separate table should be added to NFPA 20 for single phase motors. The range of horsepower ratings for the table could be 1/6 to 10 hp as there are published values of full-load currents for motors in this range. NEMA Design N single phase small motors exist only for 1/6 through 1 hp in 2 poles, 1/8 through 3/4 hp in 4 poles, and 1/8 through 1/2 hp in 6 poles. The upper rating in the range corresponds to the upper limit on hp for small motors. NEMA Design L single phase medium motors exist only for 1-1/2 through 10 hp in 2 poles, 1 through 10 hp in 4 poles, and 3/4 through 3 hp in 6 poles. It should be noted that for the Design N (small) and L (medium) types the limit on LRA at 230 volts is NOT one-half of the LRA at 115 volts.




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Submittal Date: Wed Jul 10 11:05:42 EDT 2013

Committee Statement


Statement: Revise section 9.5.1.1, add new section 9.5.1.1.1 and insert new tables 9.5.1.1(a), 9.5.1.1(b) and9.5.1.1(c). Complies with NEMA MG-1. Added 380 50 HZ and Code letters, LRC values areMaximum.


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Table 9.5.1.1 (a) Horsepower and Locked Rotor Current Motor Designation for Three Phase NEMA Design B Motors

Rated Horsepower

Locked Rotor Current Three-Phase 460 230 V at 60 Hertz (A)

Motor Designation (NFPA 70, Locked Rotor Indicating Code Letter) “F” to and Including

1 30 N

1-1/2 40 M

2 50 L

3 64 K

5 46 92 J

7-1/2 64 127 H

10 81 162 H

15 116 232 G

20 145 290 G

25 183 365 G

30 217 435 G

40 290 580 G

50 362 725 G

60 435 870 G

75 543 1085 G

100 725 1450 G

125 908 1815 G

150 1085 2170 G

200 1450 2900 G

250 1825 3650 G

300 2200 4400 G

350 2550 5100 G

400 2900 5800 G

450 3250 6500 G

500 3625 7250 G

Table 9.5.1.1 (b) Horsepower and Locked Rotor Current Motor Designation for Single Phase NEMA Design N and L Motors

Rated Horsepower

Locked Rotor Current Single Phase 115 V at 60 Hertz (A)

Locked Rotor Current Single Phase 230 V at 60 Hertz (A)

Design N Design L Design N Design L

1/6 20 - 12 -

1/4 26 - 15 -

1/3 31 - 18 -

1/2 45 45 25 25

3/4 61 61 35 35

1 80 80 45 45

1-1/2 - - 50

2 - - 65

3 - - 90

5 - - 135

7-1/2 - - 200

10 - - 260


9.6.5 * Protective Devices.

Protective devices installed in the on-site power source circuits at the generator shall allow instantaneouspickup of the full pump room load and shall comply with NFPA 70, National Electrical Code, Section700.27. New Text - "Circuit Breakers with shunt-trips shall have supervision by remote monitoring".


This makes the installation much safer as it is very easy for a shunt-trip breaker to accidentally be placed in the "tripped" condition.


Submitter Full Name: DAVID SROKA

Organization: N/A

Affilliation: None

Street Address:

City:

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Zip:


Committee Statement


Statement: This makes the installation much safer as it is very easy for a shunt-trip breaker to accidentally beplaced in the "tripped" condition.


I, DAVID SROKA, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am DAVID SROKA, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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9.6.5 * Protective Devices.

Protective devices installed in the on-site power source circuits at the generator shall allow instantaneouspickup of the full pump room load and shall comply with NFPA 70, National Electrical Code, Section 700.27.The fire pump circuit breaker is not required to be coordinated with the generator power source protectivedevice provided it is a branch circuit and is coordinated with all other line side protective devices.





Before the emergency circuit breaker in the fire pump controller was required, there wasn't a breaker to coordinate with. Now that there is, the generator set may be forced to be larger to accomodate the 300% no trip setting of the fire pump controller circuit breaker.




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Committee Statement


Statement: This makes the installation much safer as it is very easy for a shunt-trip breaker to accidentally beplaced in the "tripped" condition.





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9.7 Junction Boxes.

Where fire pump wiring to or from a fire pump controller is routed through a junction box, the followingrequirements shall be met:

(1) The junction box shall be securely mounted.

(2)

(3)

(4) As a minimum, a Type 2, dripproof enclosure (junction box) shall be used. The enclosure shall belisted to match the fire pump controller enclosure type rating.

(5) Terminals, junction blocks, and splices, where used, shall be listed.

(6) A fire pump controller or fire pump power transfer switch, where provided, shall not be used as ajunction box to supply other equipment, including a pressure maintenance (jockey) pump(s). (See10.3.4.5.1 and 10.3.4.6.)

(7) A fire pump controller or fire pump power transfer switch shall not be used as a junction box for wiresplices.





A junction box is the proper location to splice wires, not the fire pump controller or transfer switch controller. There isn't enough wire bending space for this and the additional cables may interfere with the maintenance and repair of the controller.




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Committee Statement


Statement: A junction box is the proper location to splice wires, not the fire pump controller or transfer switchcontroller. There isn't enough wire bending space for this and the additional cables may interfere withthe maintenance and repair of the controller.

* Mounting and installation of a junction box shall not violate the enclosure type rating of the firepump controller(s).

* Mounting and installation of a junction box shall not violate the integrity of the fire pump controller(s)and shall not affect the short circuit rating of the controller(s).


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9.9.5

Where the raceway (conduit) between the controller and motor is not capable of conducting ground faultcurrent sufficient to trip the circuit breaker when a ground fault occurs, a separate equipment groundingconductor shall be installed between the controller and motor.





Clause 9.9.5 was added to NFPA 2013 at the Comment stage of the process. Subsequently, I submitted a proposal for the 2014 NEC to include this same requirement in Article 695 which covers electrical installation requirements for fire pumps. At the ROP meeting, Code Panel 13 decided this requirement was not enforceable since there is no way for an AHJ to determine when a raceway (conduit) between the controller and motor is not capable of conducting ground fault current sufficient to trip the circuit breaker when a ground fault occurs. The Panel modified the proposal to require an equipment grounding conductor in all installations between the controller and motor (redundant grounding). The panel substantiated that if conducting ground fault current may be a concern with any installation, mandating the use of an equipment grounding conductor will remove that concern. At the ROC meeting, the Panel reversed its position and decided there is insufficient substantiation to require redundant grounding and decided to make no changes to Article 695 for the 2014 NEC. Based on the actions of Code Panel 13, it is proposed to delete 9.9.5. Further to this subject, it is questionable whether this requirement belongs in NFPA 20 as NEC Article 695 has responsibility for electrical installation requirements for fire pumps.




Street Address:

City:

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Committee Statement


Statement: Clause 9.9.5 was added to NFPA 2013 at the Comment stage of the process. Subsequently, Isubmitted a proposal for the 2014 NEC to include this same requirement in Article 695 which coverselectrical installation requirements for fire pumps. At the ROP meeting, Code Panel 13 decided thisrequirement was not enforceable since there is no way for an AHJ to determine when a raceway(conduit) between the controller and motor is not capable of conducting ground fault current sufficientto trip the circuit breaker when a ground fault occurs. The Panel modified the proposal to require anequipment grounding conductor in all installations between the controller and motor (redundantgrounding). The panel substantiated that if conducting ground fault current may be a concern with anyinstallation, mandating the use of an equipment grounding conductor will remove that concern. At theROC meeting, the Panel reversed its position and decided there is insufficient substantiation torequire redundant grounding and decided to make no changes to Article 695 for the 2014 NEC.Based on the actions of Code Panel 13, it is proposed to delete 9.9.5. Further to this subject, it isquestionable whether this requirement belongs in NFPA 20 as NEC Article 695 has responsibility for


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electrical installation requirements for fire pumps.





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10.3.4.5.3 Unless approved by the Authority Having Jurisdiction, remote stopping or locking out ofthe fire pump shall not be allowed.





This has always been the intent of the committee based on past action, but is not stated anywhere in the standard.




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Committee Statement


Statement: This has always been the intent of the committee based on past action, but is not stated anywhere inthe standard. The acceptance reference, references the newly proposed 4.19.2.2.





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Public Input No. 99-NFPA 20-2013 [ Section No. 10.5.2.1.1.2 ]

10.5.2.1.1.2 (new) This pressure-actuated switch or electronic pressure sensor shall be located,and sense pressure, in a vertical pressure sensing line complying with 4.30 with no less than 12”vertical sensing line free from any other devices directly below the sensor.

10.5.2.1.1.2

The requirements of 10.5.2.1.1.1 shall not apply in a nonpressure-actuated controller, where thepressure-actuated switch shall not be required.



20_Schneider.pdf Cover Sheet


This 12” (min.) vertical section of un-obstructed sensing pipe will contain air and act as a damper thus mitigating water hammer and also prevent possible deterioration of the diaphragm from water-born contamination thus enhancing transducer life.




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Committee Statement

Resolution: The change to the requirement is not compatible with variable speed installations.





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10.5.2.1.2* When an electronic pressure sensor is used to automatically control fire pumpoperation, the fire pump controller shall monitor the transducer during automatic testing.

10.5.2.1.2.1* When the lowest pressure reading exceeds 10 psi during any automatic pump start whereinitiated by the solenoid valve as required by 10.5.2.7.3, the controller shall activate a visual andsilenceable audible alarm.





Monitor electric pressure transducers for drifting, which over time which has been a proven problem.




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Committee Statement


Statement: Monitor electric pressure transducers for drifting, which over time has been a proven problem.Renumber following sections. See attached annex language for further guidance.





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Public Input No. 22-NFPA 20-2013 [ New Section after 10.5.2.1.7.6 ]


10.5.2.1.8 When an electronic pressure sensor is used to control fire pump operation, the fire pumpcontroller shall monitor for and provide a signal for the following electronic pressure sensor conditions.

(1)* For all pressure transducers relating to fire pump operation: Electronic pressure reading exceeding apreset high pressure value

(2)* For a transducer in the automatic start pressure sensing line: minimum electronic pressure readingthat fails to fall below a preset automatic start low value during automatic pump startup.

(3)* For all pressure transducers relating to fire pump operation: Electronic pressure reading below apreset low value at any time except during an automatic startup.

(4)* Any tine the transducer output is less than 10% of rated span below its rated zero pressure output.

(5)* Any time is more than 10% of it's rated span above its rated full scale output.

(6)* For a variable speed motor driven fire pump controller: any time the output from the variable speedcontrol transducer differs from the output of the start/stop transducer by more than 5% of rated transducerspan.

(7)* For controllers equipped with weekly test start, when the pressure output is more than 5% of ratedrange above the rated zero output.

10.5.2.1.8.1 When one of the conditions monitered in 10.5.2.1.6 occurs, the controller shall either activatea visual and silenceable audible alarm and activate contacts for a remote alarm, or start the pump.


Failure of the pressure actuating mechanism can cause failure of the entire fire protection system. The recent transducer recall revealed the potential for failure. Although the recall may have addressed the immediate problem, the potential for future failures remains and can be addressed. Mercoid switches do not have any supervisorable mechanism to verify failures prior to testing. Tranducers are continously interacting with the controller and can be supervised.




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Committee Statement




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10.5.2.7 Automatic Testing.

10.5.2.7.1 To ensure dependable operation of the motor and its controller, the controller equipmetn shallbe arranged to automatically start and run the motor at the minimum noflow test frequency and durationrequired by NFPA 25.

10.5.2.7.2 Performance of the AutomaticTesting shall be recorded as a pressure drop indication on thepressure recorder.

10.5.2.7.3 A solenoid valve drain on the pressure control line shall be the initiating means.

10.5.2.7.4 In a non-pressure-actuated controller, the automatic testing shall be permitted to be initiatedby means other than a solenoid valve.









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Committee Statement


Statement: Section 10.5.2.7 has been revised to clarify that automatic starting and shutdown are permitted fortesting purposes. Monitor electric pressure transducers for drifting, which over time has been aproven problem.





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10.5.3.3 Manual Testing of Automatic Operation.10.5.3.3.1 The controller shall be arranged to manually start the motor by opening the solenoid valve drainwhen so initiated by the operator.

10.5.3.3.2 In a non-pressure-actuated controller, the manual test shall be permitted to be initiated bymeans other than a solenoid valve.









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Committee Statement


Statement: Monitor electric pressure transducers for drifting, which over time which has been a proven problem.





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10.5.4.2 Automatic Shutdown After Automatic Start.

Where provided, automatic shutdown after automatic start shall comply with the following:

(1) Unless the requirements of 10.5.4.2 (3) are met, automatic shutdown shall be permitted only wherethe controller is arranged for automatic shutdown after all starting and running causes have returnedto normal.

(2) A running period timer set for at least 10 minutes running time shall be permitted to commence atinitial operation.

(3) The requirements of 10.5.4.2 (1) shall not apply and automatic shutdown shall not be permitted wherethe pump constitutes the sole supply of a fire sprinkler or standpipe system or where the authorityhaving jurisdiction has required manual shutdown.





This is the actual practice in the field.




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Committee Statement


Statement: Section 10.5.4.2 has been revised to clarify that automatic starting and shutdown are permitted fortesting purposes.





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10.8.2.2 Arrangement II (Individually Listed Fire Pump Controller and Power Transfer Switch).

The following shall be provided:

(1) A fire pump controller power transfer switch complying with Sections 9.6 and 10.8 and a fire pumpcontroller shall be provided.

(2) The transfer switch overcurrent protection for both the normal and alternate sources shall comply with9.2.3.4 or 9.2.3.4.1 or 9 . 2.3.4.2 .

(3) The transfer switch overcurrent protection shall be selected or set to indefinitely carry the locked rotorcurrent of the fire pump motor where the alternate source is supplied by a second utility.

(4) An isolating switch ahead of the alternate source input terminals of the transfer switch shall meet thefollowing requirements:

(a) The isolating switch shall be lockable in the on position.

(b) A placard shall be externally installed on the isolating switch stating “Fire Pump Isolating Switch,”with letters at least 1 in. (25 mm) in height.

(c) A placard shall be placed adjacent to the fire pump controller stating the location of the isolatingswitch and the location of the key (if the isolating switch is locked).

(d) The isolating switch shall be supervised to indicate when it is not closed, by one of the followingmethods:

i. Central station, proprietary, or remote station signal service

ii. Local signaling service that will cause the sounding of an audible signal at a constantlyattended point

iii. Locking the isolating switch closed

iv. Sealing of isolating switches and approved weekly recorded inspections where isolatingswitches are located within fenced enclosures or in buildings under the control of the owner

(e) This supervision shall operate an audible and visible signal on the transfer switch and permitmonitoring at a remote point where required.



9.2.3.4.2-10.8.2.2_2_.pdf Cover Sheet


This change reflects NEC CMP-13 Comment actions 13-37, Log #434 pertaining to (695.3(F)).


Submitter Full Name: James Daly


Street Address:

City:

State:

Zip:



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Committee Statement


Statement: The added text allows the overcurrent protection and the isolating switch for the stand-alone transferswitch to be provided in separate enclosures. The intent to allow this was added to Appendix A of the2013 Edition of NFPA 20, but not covered in the body of the standard. Reference Figure A.10.8,Arrangement II.


I, James Daly, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. Except to the extent that I may lack authority to make an assignment of content identified above, I hereby warrant that I amthe author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am James Daly, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


Source of some text is from the NEC 2013 Annual Revision Cycle ROC Comment 13-37.


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(1) A fire pump controller power transfer switch complying with Sections 9.6 and 10.8 and a fire pumpcontroller shall be provided. The overcurrent protection required by 10.8.2.2(2) and the isolatingswitch required by 10.8.2.2(4) shall be permitted to be provided in a separate enclosures upstream ofthe transfer switch.

(2) The transfer switch overcurrent protection for both the normal and alternate sources shall comply with9.2.3.4 or 9.2.3.4.1.
















The added text allows the overcurrent protection and the isolating switch for the stand-alone transfer switch to be provided in separate enclosures. The intent to allow this was added to Appendix A of the 2013 Edition of NFPA 20, but not covered in the body of the standard. Reference Figure A.10.8, Arrangement II.




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(2) The transfer switch overcurrent protection for both the normal and alternate sources shall comply with9.2.3.4 or 9.2.3.4.1.



(a) Externally Operable. The isolating switch shall be lockable externally operable and lockable inthe on position both the closed and open positions .













The ability to lock a disconnecting switch in the closed position (now a requirement) is to prevent inadvertent disconnection and the ability to lock the isolating switch in the open position is to provide safety when servicing the controller and motor circuits. It is a requirement in 76.4, UL 508 (a Normative reference from UL 218) and will permit lock-out/tag-out as required in NFPA 70E.




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(2) The transfer switch overcurrent protection for both the normal and alternate sources shall comply with9.2.3.4 or 9.2.3.4.1 or 9 . 2.3.4.2 .














9.2.3.4.2-10.8.2.2_2_.pdf Cover Sheet


These changes are to reflect NEC CMP-13 comment actions 13-37, Log #434 pertaining to (695.3(F)).




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Committee Statement




I, Richard Schneider, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyrightin this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. Except to the extent that I may lack authority to make an assignment of content identified above, I hereby warrantthat I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.



Source of some text is from the NEC 2013 Annual Revision Cycle ROC comment 13-37.


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Public Input No. 167-NFPA 20-2013 [ Sections 11.2.3.1, 11.2.3.2 ]

Sections 11.2.3.1, 11.2.3.2

11.2.3.1 Horizontal Shaft Pumps. 11.2.3.1.1

Engines shall be connected to horizontal shaft pumps by means

Horizontal shaft engines shall be provided with means for direct attachment of a flexible couplingadaptor or flexible connecting shaft listed for this service.

11.2.3.1.2

The flexible coupling or flexible connecting shaft shall be directly attached adaptor or stub shaft or atorsional vibration damping type coupling to the engine flywheel adapter or stub shaft. (SeeSection 6.5 and 7 . )

11.2.3.2 Vertical Shaft Turbine–Type Pumps.

11.2.3.2.1

Unless the requirements of 11.2.3.2.2 are met, engines shall be connected to vertical shaft pumps bymeans of a right-angle gear drive with a listed flexible connecting shaft that will prevent undue strain oneither the engine or gear drive. (See Section 7.5 . 5.1.6.4 . )

11.2.3.2.2

The requirements of 11.2.3.2.1 shall not apply to diesel engines and steam turbines designed andlisted for vertical installation with vertical shaft turbine–type pumps, which shall be permitted to employsolid shafts and shall not require a right-angle drive but shall require a nonreverse ratchet.









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Committee Statement


Statement: There are no new requirements proposed in any of the proposed changes, only relocation ofrequirements to provide improved clarity and user friendliness. New par. Numbers as shown above.6.5.1.1 Relocation requirements from 11.2.3.1.1 to provide a single place in the standard defining thecoupling requirement for separately coupled pumps. 6.5.1.2 Modified to provide more clarity of listingrequirements of flexible couplings and flexible connecting shafts for electric motor or diesel pumpdrivers. 7.5.1.8.1 Relocation of requirements from Chapter 11 to Chapter 7 where other verticalturbine pump drive where other vertical turbine pump drive requirements are located. 7.5.1.8.2Renumber. Plus change text for clarity. 7.5.1.8.3 Renumber. 11.2.3.1 This section now applies to theengine power take-off connection for all types of pumps. 11.2.3.1.1 Provide clarity that thisrequiremetn does not apply to vertical shaft engines that area are allowed for VT pumps, and addtorsional damping coupling which is a requirement of 7.5.1.6.4.





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11.2.4.2.3.1 Operation.

(A)

The transition from the primary ECM to the alternate or alternate to primary shall be controlled by ahand/automatic switch without an off position.

(B)

When the switch required in 11.2.4.2.3.1(A) is in the automatic position, the transition from theprimary ECM to the alternate or alternate to primary shall be accomplished automatically uponfailure of the either ECM.

(C)

When the switch required in 11.2.4.2.3.1(A) is in the hand position, the transition from the primary ECMto the alternate or from alternate to primary shall be accomplished manually.



11.2.4.2.3.1_B_.pdf Cover Sheet


Editorial.




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Statement: Editorial.





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11.2.4.2.6.1 A means shall be provided to indicate the type of trouble.



11.2.4.2.6.1.pdf Cover Sheet


This allows the operator to interpret the level or severity of the trouble and initiate the proper corrective action.




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Statement: Create new section 11.2.5.5. This allows the operator to interpret the level or severity of the troubleand initiate the proper corrective action.





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11.2.4.2.6 ECM Engine Supervision.

A common supervisory signal shall be provided to the controller in for the event of any of thefollowing following events as a minimum :

(1) Fuel injection failure trouble

(2) Low fuel pressure

(3) Any primary sensor failure



11.2.4.2.6.pdf Cover Sheet


The common supervisory signal to the controller typically contains more than just the three events described and is truly a common alarm. Electronic engines typically have a general fault or common fault alarm for all trouble that is experienced on the engine.




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Statement: The common supervisory signal to the controller typically contains more than just the three eventsdescribed and is truly a common alarm. Electronic engines typically have a general fault or commonfault alarm for all trouble that is experienced on the engine.





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11.2.4.3.3

In the event of a failure of the variable speeds control system, the engine shall be fully functional at pumprated speed with the governor defined in 11.2.4.1 .





To provide further definition to the existing requirement.




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Statement: To provide further definition to the existing requirement.





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11.2.4.3.4.1.1 Pressure sensing line shall be installed with a connection that is in a horizontalorientation.



11.2.4.3.4.1.1.pdf Cover Sheet


The pressure sensing line can be installed in a vertical orientation in either the top or bottom of the pipe. With it installed in the bottom it has the opportunity to gather debris. With it installed in the top it has the opportunity for an air pocket.




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Statement: The pressure sensing line can be installed in a vertical orientation in either the top or bottom of thepipe. With it installed in the bottom it has the opportunity to gather debris. With it installed in the top ithas the opportunity for an air pocket.





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11.2.4.4.8 Means shall be provided for signaling high cooling water temperature to the controllerat a temperature specified by the engine manufacturer coordinated with the sizing of the heatexchanged water supply.

11.2.4.4.8.1 Means shall be provided on the engine for testing the operation of the high cooling watertemperature signal to the controller, resulting in visible and common audible alarm on the controller asrequired in 12.4.1.3.

11.2.4.4.8.2 Instructions for performing the test in 11.2.4.4.8.1 shall be included in the engine manual.



11.2.4.4.8_4.18.7.2.pdf Cover Sheet


To provide the requirements of the signal from the engine to support the requirements of 12.4.1.4(11). We are removing the prescriptive requirement of 104°F (40°C) and making it a performance based requirement of the engine manufacturer.




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Statement: To provide the requirements of the signal from the engine to support the requirements of 12.4.1.4(11).We are removing the prescriptive requirement of 104°F (40°C) and making it a performance basedrequirement of the engine manufacturer.





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11.2.7.2.1.3

Nickel-cadmium or other kinds of batteries shall be permitted to be installed in lieu of lead-acid batteries,provided they meet the engine manufacturer's requirements and the charging voltage levels of thechargers are matched to the requirements of the specific batteries .



11.2.7.2.1.3.pdf Cover Sheet


Many times when alternative batteries are being used, chargers with voltage charging levels for lead-acid batteries are being used.




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Statement: Many times when alternative batteries are being used, chargers with voltage charging levels forlead-acid batteries are being used.





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11.4.1.2.5 .3

Each tank shall have suitable fill, drain, and vent connections connection .





Currently fuel connection requirements are scattered throughout the section. This proposal is provided to provide clarity for the user.The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1- The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TC determined to leave the implementation decision of an active fuel maintenance system to NFPA 25. However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, the system cannot be appropriately installed if and when the owner decided to implement a system. This proposed requirement is only for a connection and a plug.




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Committee Statement


Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, thesystem cannot be appropriately installed if and when the owner decided to implement a system. Thisproposed requirement is only for a connection and a plug.


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Public Input No. 169-NFPA 20-2013 [ Sections 11.4.1.2.5, 11.4.1.2.6 ]

Sections 11.4.1.2.5, 11.4.1.2.6

11.4.1.2.5 Tank Connections.

11.4.1.2.5.1

Each tank shall have a suitable fill , drain, and vent connections connection .

11.4.1.2. 6 5.1.1

Fill pipes that enter the top of the tank shall terminate within 6 in. (152 mm) of the bottom of the tank andshall be installed or arranged so that vibration is minimized.

11.4.1.2.5.2 Each tank shall have a suitable drain connection.

11.4.1.2.5.2.1 Drain connections located in the lowest poitn of the tank shall be 1 in. (25.4 mm) NPT orsized in accordance with ANSI/UL 142, Standard for Steel Aboveground Tanks for Flammable andCombustible Liquids , or other approved standards.









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Committee Statement


Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, thesystem cannot be appropriately installed if and when the owner decided to implement a system. This


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proposed requirement is only for a connection and a plug.





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Public Input No. 173-NFPA 20-2013 [ Sections 11.4.1.2.5, 11.4.1.2.6, 11.4.1.2.7 ]

Sections 11.4.1.2.5, 11.4.1.2.6, 11.4.1.2.7

11.4.1.2.5 .5

Each tank shall have suitable fill, drain, and vent connections engine return connection .

11.4.1.2.

6

Fill pipes that enter the top of the tank shall terminate within 6 in. (152 mm) of the bottom of the tank andshall be installed or arranged so that vibration is minimized 5.5.1 The tank connection shall be nosmaller than the fuel return piping from the engine.

11.4.1.2.5.6 Each tank shall have a suitable fuel level switch connection .

11.4.1.2.

7

5.6.1

The fuel tank shall have one 2 in. (50.8 mm) NPT threaded port in the top, near the center, of the tank toaccommodate the low fuel level switch required in 11 . 4.2.6.

11.4.1.2.5.7* Each tank shall have a suitable active fuel maintenance return connection.

11.4.1.2.5.7.1 The fuel tank shall have one, minimum 1 in. (25.4 mm) NPT threaded port in the top of thetank to accommodate the connection of a line for the return fuel from an active fuel maintenance systemallowed NFPA 20, A.11.6.4 and NFPA 25, 2014 par. 8.3.4.

11.4.1.2.5.7.2 When there is not an active fuel system installed a plug shall be installed in thisconnection.









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Committee Statement







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11.4.1.2.8 Tank Venting.

If a double-wall tank is installed, the interstitial space between the shells of the diesel fuel storage tankshall be monitored for leakage and annunciated by the engine drive controller. The signal shall be of thesupervisory type.

11.4.1.2.

8.1

9 Tank Venting.

11.4.1.2.9.1

Normal vents shall be sized in accordance with ANSI/UL 142, Standard for Steel Aboveground Tanks forFlammable and Combustible Liquids, or other approved standards.

11.4.1.2. 8 9 .2

As an alternate to the requirement in 11.4.1.2.8.1 , the normal vent shall be at least as large as the

largest filling or withdrawal connection, but in no case shall it be less than 1 1 ? 4 in. (32 mm) nominalinside diameter.

11.4.1.2.8.3 Vent Piping.

(A)

Vent piping shall be arranged so that the vapors are discharged upward or horizontally away fromadjacent walls and so that vapors will not be trapped by eaves or other obstructions.

(B)

Outlets shall terminate at least 5 ft (1.5 m) from building openings.



11.4.1.2.8_etc.pdf Cover Sheet


Correcting the placement of heading, Tank Venting.




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Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, the


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system cannot be appropriately installed if and when the owner decided to implement a system. Thisproposed requirement is only for a connection and a plug.





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Public Input No. 171-NFPA 20-2013 [ Sections 11.4.1.2.8.1, 11.4.1.2.8.2 ]

Sections 11.4.1.2.8.1, 11.4.1.2.8.2

11.4.1.2. 8 5 . 3. 1

Normal vents shall be 2 in. (50.8 mm) NPT or sized in accordance with ANSI/UL 142, Standard for SteelAboveground Tanks for Flammable and Combustible Liquids, or other approved standards.

11.4.1.2. 8 5 . 3. 2

As an alternate to the requirement in 11.4.1.2. 8 5 . 3. 1 , the normal vent shall be at least as large

as the largest filling or withdrawal connection, but in no case shall it be less than 1 1 ? 4 in. (32mm) nominal inside diameter.









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11.4.1. 2.8. 3 Vent Piping. (A)

11.4.1.3.1

Vent piping shall be arranged so that the vapors are discharged upward or horizontally away from adjacentwalls and so that vapors will not be trapped by eaves or other obstructions.

(B) 11.4.1.3.2

Outlets shall terminate at least 5 ft (1.5 m) from building openings.









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Public Input No. 123-NFPA 20-2013 [ New Section after 11.4.1.2.8.3(B) ]

(C)

Outlets shall terminate at least 12 ft above the finished ground level.


This is a requirement from the International Fire Code (IFC). We actually do not know the origin of the 12 ft rule, but we know that many installers of fire pumps are missing this requirement that is buried in section 5704.2.7.3.3 of the IFC. Our goal is to consolidate the rules for the installation of fire pumps in one location so that everyone can find the applicable rules easily.




Affilliation: E&S Committee

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Committee Statement


Statement: This is a requirement from the International Fire Code (IFC). We actually do not know the origin of the12 ft rule, but we know that many installers of fire pumps are missing this requirement that is buried insection 5704.2.7.3.3 of the IFC. Our goal is to consolidate the rules for the installation of fire pumps inone location so that everyone can find the applicable rules easily.





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11.4.1.2. 9 Engine Supply Connection 5.4 Each tank shall have a suitable engine supply connection .

11.4.1.2. 9 5 . 4. 1

The fuel supply pipe connection shall be located on a side of the tank.

11.4.1.2. 9 5 . 4. 2

The engine fuel supply (suction) pipe connection shall be located on the tank so that 5 percent of the tankvolume provides a sump volume not usable by the engine.

11.4.1.2.5.4.3 The tank connection shall be no smaller than the fuel supply piping to the engine.









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11.4. 1. 2 * Fuel Supply Tank and Capacity .

11.4. 2 1 . 3. 1 *

Fuel supply tank(s) shall have a capacity at least equal to 1 gal per hp (5.07 L per kW), plus 5 percentvolume for expansion and 5 percent volume for sump.

11.4.2. 2 3

Whether larger-capacity fuel supply tanks are required shall be determined by prevailing conditions, suchas refill cycle and fuel heating due to recirculation, and shall be subject to special conditions in each case.

11.4. 1. 2. 3 1

The fuel supply tank and fuel shall be reserved exclusively for the fire pump diesel engine.

11.4. 1.3* Fuel Supply Tank Capacity.

11.4.1. 2. 4 2

There shall be a separate fuel supply tank for each engine.

11.4. 2 4 .5 .3

There shall be a separate fuel supply and return line for each engine.

11.4.2.6 Tank Level Indication.

11.4.2.6.1

Means other than sight tubes for continuous indicating of the amount of fuel in each storage tank shallbe provided.

11.4.2.6.2

A fuel level indicator shall be provided to activate at the two-thirds tank level.

11.4.2.6.3

The low fuel level condition shall initiate a supervisory signal.





Rearranging for clarity and user friendliness. No new requiremetns have been added.




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Statement: These section numbers have been relocated for clarity. Renumber subsequent sections. Section11.4.2 has been relocated to 11.4.1.2 with "and Capacity" removed from the title. Existing sections11.4.2.3 and 11.4.2.4 have been relocated as subsections to 11.4.1.2 respectively (11.4.1.2.1 and


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11.4.1.2.2). A new subheading has been inserted for 11.4.1.3 “Fuel Supply Tank Capacity”, theexisting 11.4.1.3 will need to be renumbered accordingly. Subsection 11.4.2.1. and 11.4.2.2 havebeen relocated to subsections under the new section subheading for 11.4.1.3 respectively (11.4.1.3.1and 11.4.1.3.2). Exiting 11.4.2.5 has been relocated as new section 11.4.4.5.3.





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11.4.2.6.4

Tanks shall be prevented from overfilling by one of the following:

(A) An automatic mechanism that sends a audible or visible signal to the person filling the tank when itreaches 90% of the tank's capacity and automatically shuts off the flow of liquid to the tank when it reaches95% of the tank's capacity.

(B) A permanent sign is provided at the fill point with the tank calibration chart and the filling procedure,which shall include having the person performing the fill operation determining how full the tank is prior tofilling and calculating the quantity of fuel (in gallons or liters) that it will take to get the tank to 90% of thetank's capacity. Where climatic conditions are such that the sign may be obscured by ice or snow,weathered beyond readability, or otherwise rendered unreadable, the prcedures and chart shall bepermitted to be located in an office window, lock box, or other location accessible to the person forming thefilling of the tank.

(C) Any approved procedure for preventing the tank from being overfilled.


The tank needs to be protected from overfilling.

This is a requirement from the International Fire Code (IFC). Many installers of fire pumps are missing this requirement that is buried in section 5704.2.9.7.6 of the IFC. Our goal is to consolidate the rules for the installation of fire pumps in one location so that everyone can find the applicable rules easily.





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Committee Statement


Statement: The tank needs to be protected from overfilling. This is a requirement from the International Fire Code(IFC). Many installers of fire pumps are missing this requirement that is buried in section 5704.2.9.7.6of the IFC. Our goal is to consolidate the rules for the installation of fire pumps in one location so thateveryone can find the applicable rules easily.


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11.4.3 * Fuel Supply Tank Supply Location.

11.4.3.1

Diesel fuel supply tanks shall be located above ground in accordance with municipal or other ordinancesand in accordance with requirements of the authority having jurisdiction and shall not be buried.

11.4.3.2

In zones where freezing temperatures [32°F (0°C)] are possible, the fuel supply tanks shall be located inthe pump room.

11.4.3.3

The supply tank shall be located so the fuel supply pipe connection to the engine is no lower than thelevel of the engine fuel transfer pump.

11.4.3.4

The engine manufacturer's fuel pump static head pressure limits shall not be exceeded when the level offuel in the tank is at a maximum.



11.4.3.pdf Cover Sheet


Editorial.




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Statement: Editorial.





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11.4.4.2.1

Where black steel pipe is used for fuel piping, the fittings shall be malleable iron fittings.


Many AHJ's want to force the use of cast iron fittings for fuel service. But cast iron fittings can be a problem when they are struck. The brittle nature of the cast iron fitting makes it a poor choice for putting steel pipe together for fuel service.





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Submittal Date: Sat Jun 29 13:57:40 EDT 2013

Committee Statement


Statement: Many AHJ's want to force the use of cast iron fittings for fuel service. But cast iron fittings can be aproblem when they are struck. The brittle nature of the cast iron fitting makes it a poor choice forputting steel pipe together for fuel service.





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11.4.4.3.1 A check valve as specified by the engine manufacture is allowed to be installed in thefuel return line only when required by the engine manufacturer.





To eliminate confusion in the field caused by the reference to a check valve in the fuel return line in Figure A.11.4.4.




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Statement: To eliminate confusion in the field caused by the reference to a check valve in the fuel return line inFigure A.11.4.4.





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11.5.2.5.1 The exhaust pipe and muffler, if used, shall be supported so none of its weight issupported by the engine's flexible connection.





Premature failures of the engine's exhaust flexible connection due to excessive weight being applied to it resulting from inadequate support of the exhaust pipe system.




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Committee Statement


Statement: Premature failures of the engine's exhaust flexible connection due to excessive weight being appliedto it resulting from inadequate support of the exhaust pipe system.





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11.6.4* Fuel Supply Maintenance.

11.6.4.1

The fuel storage tanks shall be designed and installed so that they can be kept as full and maintained aspractical at all times but never below 66 percent (two-thirds) of tank capacity.

11.6.4.2

The tanks shall be designed and installed so that they can always be filled by means that will ensureremoval of all water and foreign material.

See uploaded file.



20_PI9_Rec_from_Amendment.pdf ROP/ROC Text from Amendment


Note: The following proposal 20-181 and comment 20-90 were returned to Committee at the 2012 Association Technical Meeting and/or subsequent Standards Council Meeting. In accordance with 4.7.1(d) and 4.7.2(c) of the Regulations Governing Committee Projects, it is now being processed as a Proposal for this revision cycle.

This proposal 20-181 and comment 20-90 were returned to Committee at the A2012 Association Technical Meeting and/or subsequent Standards Council Meeting. In accordance with 4.7.1(d) and 4.7.2(c) of the Regulations Governing Committee Projects, it is now being processed as a Proposal for this revision cycle. NOTE: This public input was also developed by Russell B. Leavitt, Telgian Corporation.


Submitter Full Name: John Whitney

Organization: Clarke Fire Protection Products

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Committee Statement


Statement: New requirements for active fuel maintenance systems has been added providing guidance for theinstallation of these systems when used. These requirements provide provisions which will allow theactive fuel maintenance system to be installed either at the time of construction or at a later date. Thiscoordinates with the changes made to NFPA 25, which currently provides guidance on the inspection,testing and maintenance of such systems. See new annex language to sections 11.6.4.3 and11.6.4.4.


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I, John Whitney, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquireno rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivativeform is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyrightassignment.

By checking this box I affirm that I am John Whitney, and I agree to be legally bound by the above Copyright Assignment and the termsand conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon mysubmission of this form, have the same legal force and effect as a handwritten signature


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Report on Proposals – June 2015 NFPA 20_______________________________________________________________________________________________20- Log #4

_______________________________________________________________________________________________

John Whitney, Clarke Fire Protection Products, Inc., Russell B. Leavitt, Telgian CorporationRevise text to read as follows:

Where environmental or fuel quality conditions result in degradation of the fuel while stored in the supply tank,from items such as water, micro-organisms and particulates, or destabilization, a listed active fuel maintenance systemshall be installed to maintain fuel quality.

Active fuel maintenance system shall be quipped with a visible indicator to indicate when the system is inneed of maintenance.

Active fuel maintenance system shall be quipped with contact closure for connect to the controller (ref. par.12.4.1.4.7) to indicate when the system is in need of maintenance.

When required the listed active fuel maintenance systems shall be permanently connected to the fuel tank asfollows:(1) All connections made directly to the tank ((this language is from current par. A.11.6.4))(2) The supply from the tank to the maintenance system shall be connected to the bottom of the fuel storage tank.(3) The return from the maintenance system to the fuel storage tank shall be installed as directed by the fuelmaintenance system manufacturer.(4) No connections are interconnected with the engine or its fuel supply and return piping in any way. ((This language isfrom current par. A.11.6.4))(5) No valves or other devices are added to the engine or its fuel supply and fuel return in any way. ((This language isfrom current par. A.11.6.4))

Commercial distillate fuel oils used in modern diesel engines are subject to various detrimental effects fromstorage. The origin of the crude oil, refinement processing techniques, time of year, and geographical consumptionlocation all influence the determination of fuel blend formulas. Sulfur, naturally occurring gums, waxes, soluble metallicsoaps, water, dirt, blends and temperature all contribute to the degradation of the fuel as it is handled and stored. Theseeffects begin at the time of fuel refinement and continue until consumption. Proper fuel storage is critical for engineoperation, efficiency, and longevity.Storage tanks should be kept water-free. Water contributes to steel tank corrosion and the development of

microbiological growth where fuel and water interface. This and the metals of the system provide elements that canreact with fuel to form certain gels or organic acids, resulting in clogging of filters and system corrosion.Scheduled fuel maintenance helps to reduce fuel degradation. Fuel maintenance filtration can remove contaminants

and water and maintain conditions to provide reliability and efficiency for standby fire pump engines. Fuel maintenanceand testing should begin the day of installation and first fill. In addition to an active fuel maintenance system a fuelstabilizer or other additives may be necessary to insure quality fuel for engine operation. Consult your active fuelmaintenance system supplier or fuel supplier for guidance regarding fuel additives and maintenance requirements forlong term storage.

Low fuel level. Fuel supply trouble. Signal at two-thirds tank capacity, or when active fuel maintenancesystem needs maintenance.

The characteristics of diesel fuel are changing and proper storage is becoming extremely important toinsure reliable operation of engines. Even when the proper fuel has been purchased and put into the fuel storage tanklong term reliability can not be assumed. For reasons as explained in the proposed annex text and governmentalmandated addition of various blends of bio-fuel, diesel fuel is requiring additional attention to insure reliable use in dieselengines for stand-by service.

Revise text to read as follows:Where environmental or fuel quality conditions result in degradation of the fuel while stored in the supply

tank from items such as water, micro-organisms and particulates, or destabilization, A listed active fuel maintenancesystem shall be installed to maintain fuel quality with all fuel storage tanks.

When required, The listed active fuel maintenance system shall be permanently connected to the fueltank as follows:

1Printed on 1/25/2013

Report on Proposals – June 2015 NFPA 20This entire section reads as a reactive action. It states that “Where environmental or fuel quality

conditions result [emphasis added] in degradation . . .Reactive actions are not appropriate for an installation standard and should be assigned to NFPA 25. If the intent is forthe installer to somehow make a determination that the conditions exist from the onset, then how is that determined?The committee must either explain how to determine the conditions exist for degradation and then add the word could

before “result in degradation of the fuel” or require it for all fuel storage tanks. If the problem is as pervasive as thecommittee seems to believe, then it should be a requirement for all storage tanks.

This proposal 20-181 and comment 20-90 were returned to Committee at the A2012 AssociationTechnical Meeting and/or subsequent Standards Council Meeting. In accordance with 4.7.1(d) and 4.7.2(c) of theRegulations Governing Committee Projects, it is now being processed as a Proposal for this revision cycle.



11.6.4.2

The tanks shall be designed and installed so that they can always be filled by means that willensure removal the introduction of all water and foreign material is minimized .





The current text provides requirements for the design and installation that affect the process of filling the tank with fuel. The filling process will not remove water and foreign material from the tank, but should minimize the introduction of water and foreign material. Once water or foreign material has been introduced into the tank, removal is a another issue.




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Committee Statement


Statement: New requirements for active fuel maintenance systems has been added providing guidance for theinstallation of these systems when used. These requirements provide provisions which will allow theactive fuel maintenance system to be installed either at the time of construction or at a later date. Thiscoordinates with the changes made to NFPA 25, which currently provides guidance on the inspection,testing and maintenance of such systems. See new annex language to sections 11.6.4.3 and11.6.4.4.





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12.3.5.3.3 Unless approved by the Authority Having Jurisdiction, remote stopping or lockout ofthe fire pump shall not be allowed.





This has always been the intent of the committee based on past action, but is not stated anywhere in the standard.




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Committee Statement


Statement: This has always been the intent of the committee based on past action, but is not stated anywhere inthe standard. The exceptance reference, references the newly proposed 4.19.2.2.





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12.4.1.4

Separate visible indicators and a common audible signal capable of being heard while the engine is runningand operable in all positions of the main switch except the off position shall be provided to immediatelyindicate the following conditions:

(1)

(2) Battery charger failure. Each controller shall be provided with a separate visible indicator for batterycharger failure and shall not require the audible signal for battery charger failure.

(3) Low air or hydraulic pressure. Where air or hydraulic starting is provided (see 11.2.7 and 11.2.7.4),each pressure tank shall provide to the controller separate visible indicators to indicate low pressure.

(4) System overpressure, for engines equipped with variable speed pressure limiting controls, to actuateat 115 percent of set pressure.

(5) ECM selector switch in alternate ECM position (for engines with ECM control only).

(6) Fuel injection malfunction (for engines with ECM only).

(7) Low fuel level. Signal at two-thirds tank capacity.

(8) Low air pressure (air-starting engine controllers only). The air supply container shall be provided with aseparate visible indicator to indicate low air pressure.

(9) Low engine temperature.

(10) Supervisory signal for interstitial space liquid intrusion.

(11) High cooling water temperature.

See uploaded file.










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* Battery failure or missing battery. Each controller shall be provided with a separate visible indicatorfor each battery. The battery failure signal shall initiate at no lower than two-thirds of battery nominalvoltage rating (8.0 V dc on a 12 V dc system). Sensing shall be delayed to prevent nuisance signals.


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Committee Statement


Statement: A separate fuel maintenance signal is need if an active fuel maintenance system is installed. Seeattached annex A language for further guidance. Alarms annunciated on the controller drawimmediate concern and phone calls wtihout understanding the true type of trouble. The operatorneeds to go to the engine to understand the type of trouble or fault.





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_______________________________________________________________________________________________





















12.4.1.4

Separate visible indicators and a common audible signal capable of being heard while the engine isrunning and operable in all positions of the main switch except the off position shall be provided toimmediately indicate the following conditions:

(1)

(2) Battery charger failure. Each controller shall be provided with a separate visible indicator for batterycharger failure and shall not require the audible signal for battery charger failure.

(3) Low air or hydraulic pressure. Where air or hydraulic starting is provided (see 11.2.7 and11.2.7.4 ) , each pressure tank shall provide to the controller separate visible indicators to indicate lowpressure.

(4) System overpressure, for engines equipped with variable speed pressure limiting controls, to actuateat 115 percent of set pressure.

(5) ECM selector switch in alternate ECM position (for engines with ECM control only).

(6) Fuel injection malfunction Common alarm for fuel injuection trouble (for engines with ECM only).

(7) Low fuel level. Signal at two-thirds tank capacity.

(8) Low air pressure (air-starting engine controllers only). The air supply container shall be provided witha separate visible indicator to indicate low air pressure.

(9) Low engine temperature.

(10) Supervisory signal for interstitial space liquid intrusion.

(11) High cooling water temperature.





The signal from the engine as described in 11.4.2.6 is typically a common or general fault alarm. This creates confusion at the installation as to the degree of the trouble.




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Committee Statement

* Battery failure or missing battery. Each controller shall be provided with a separate visibleindicator for each battery. The battery failure signal shall initiate at no lower than two-thirds of batterynominal voltage rating (8.0 V dc on a 12 V dc system). Sensing shall be delayed to prevent nuisancesignals.


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12.7.2.1.1.2 (new) This pressure-actuated switch or electronic pressure sensor shall be located,and sense pressure, @ the end of a vertical pressure sensing line complying with 4.30 with no lessthan 12” vertical sensing line free from any other devices directly below the sensor.

12.7.2.1.1.2

The requirement of 12.7.2.1.1.1 shall not apply to a non-pressure-actuated controller, where thepressure-actuated switch or pressure responsive means shall not be required.



20_Schneider.pdf Cover Sheet


This 12” (min.) vertical section of un-obstructed sensing pipe will contain air and act as a damper thus mitigating water hammer and also prevent possible deterioration of the diaphragm from water-born contamination thus enhancing transducer life.




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Committee Statement

Resolution: Not compatible with variable speed installations.





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12.7.2.1.2* When an electronic pressure sensor is used to automatically control fire pumpoperation, the fire pump controller shall monitor the transducer during automatic testing.

12.7.2.1.2.1* When the lowest pressure reading exceeds 10 psi during any automatic pump start whereinitiated by the solenoid valve as required by 12.7.2.7.3, the controller shall activate a visual andsilenceable audible alarm.





Monitor diesel pressure transducers for drifting, which over time which has been a proven problem.




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Committee Statement


Statement: Monitor diesel pressure transducers for drifting, which over time has been a proven problem. Seeattached annex A language for further guidance.





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12.7.2.1.8 When an electronic pressure sensor is used to control fire pump operation, the fire pumpcontroller shall monitor for and provide a signal for the following electronic pressure sensor conditions.

(1)* For all pressure transducers relating to fire pump operation: Electronic pressure reading exceeding apreset high pressure value

(2)* For a transducer in the automatic start pressure sensing line: minimum electronic pressure reading thatfails to fall below a preset automatic start low value during automatic pump startup.

(3)* For all pressure transducers relating to fire pump operation: Electronic pressure reading below a presetlow value at any time except during an automatic startup.

(4)* Any tine the transducer output is less than 10% of rated span below its rated zero pressure output.

(5)* Any time is more than 10% of it's rated span above its rated full scale output.

(6)* For a variable speed motor driven fire pump controller: any time the output from the variable speedcontrol transducer differs from the output of the start/stop transducer by more than 5% of rated transducerspan.

(7)* For controllers equipped with weekly test start, when the pressure output is more than 5% of ratedrange above the rated zero output.



The recent recall of Transducers clearly identifies a problem for failure that can be monitered by current technology. While the recall addressed the immediate problem, there is a likelihood of similar issues occurring in future problems. Mercoid switches do not have a mechanism outside of actual testing to identify failures, Transducers communicate continuously with the controller and can and should be monitored for abnormal conditions that may occur outside of testing.



Public Input No. 22-NFPA 20-2013 [New Section after10.5.2.1.7.6]

Both section deal with monitoring oftranducers




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Committee Statement




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12.7.2.6.2

Automatic shutdown shall not be permitted where the pump constitutes the sole source of supply of afire sprinkler or standpipe system or where the authority having jurisdiction has required manualshutdown.





This is the actual practice in the field.




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Committee Statement


Statement: Section 12.7.2.6 has been integrated into new 12.7.5.2





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12.7.2.6.2

Automatic shutdown after an automatic demand start shall not be permitted where the pump constitutesthe sole source of supply of a fire sprinkler or standpipe system or where the authority having jurisdictionhas required manual shutdown.


Eliminate conflict languate about an automatic stop after a test start which is permitted




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Committee Statement


Statement: Section 12.7.2.6 has been integrated into new 12.7.5.2





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12.7.2.7 Automatic Testing.12.7.2.7.1 To ensure dependable operation of hte motor and its controller, the controller equipment shallbe arranged to automatically start and run the motor at the minimum noflow test frequency and durationrequired by NFPA 25.

12.7.2.7.2 Performance of the Automatic Testing shall be recorded as a pressure drop indication on thepressure recorder.

12.7.2.7.3 A solenoid valve drain on the pressure control line shall be the initiating means.

12.7.2.7.4 In a non-pressure-actuated controller, the automatic testing shall be permitted to be initiated bymeans other than a solenoid valve.

12.7.2.7.5 The controller shall use the opposite battery bank (every other bank) for cranking onsubsequent weeks.









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12.7.2.7.3

Means shall be permitted within the controller to manually to automatically terminate the weekly test,provided a minimum of 30 minutes has expired.


Correct the intention of this paragraph



Public Input No. 18-NFPA 20-2013 [Section No. 12.7.2.6.2] corrolate automatic test stop requirements




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14.1.1.1


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Suction piping shall be flushed at a flow rate not less than indicated in Table 14.1.1.1 or at thehydraulically calculated water demand rate of the system, whichever is greater.

Table 14.1.1.1 Minimum Flow Rates for Flushing Suction Piping

Nominal Pipe Size

(in.)

Flow rate

(gpm)

Nomina

(

1½

85

75 38

345

284

2 150 50

540

568

3

330

300 75 1,

380

136

4

590

600 100 2,

160

271

5

920

750 125

3

2 ,

490

839

6 1,

360

125 150 4,

850

259

8 2,

350

250 200 8,

900

517

10 3,

670

750 250

13

14 ,

900


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195

12

5

6 ,

290

000 300

20

22 ,

030

712


This table should match table 4.26 (a) in that the flush rate should be at least 150% of pump allowed to be connected to the pipe sizes.


Submitter Full Name: DARRELL UNDERWOOD

Organization: K G U LLC

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Committee Statement

Resolution: The Suction Piping should be flushed with the maximum available water from the source due to thelow pressure available from some sources, such as ground storage tanks. The requested changemay cause confusion. Suction piping is required to be flushed prior to connection to the pump . Referto NFPA-24 2013, Standard for the Installation of Private Fire Service Mains and TheirAppurtenances Paragraph 10.10.2 Testing and Acceptance, Section 10.10.2.1* Flushing of Piping,and Table 10.10.2.1.3 , Flow Required to Produce a Velocity of 10 ft/sec (3 m/sec) in Pipes.


I, DARRELL UNDERWOOD, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights incopyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand andintend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or anothersimilar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enterinto this copyright assignment.

By checking this box I affirm that I am DARRELL UNDERWOOD, and I agree to be legally bound by the above Copyright Assignmentand the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signaturethat will, upon my submission of this form, have the same legal force and effect as a handwritten signature


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]

Where the maximum flow available from the water supply cannot provide the flow rate provided in Table14.1.1.1, the flushing flow rate shall be the greater of 100 greatest flow possible, as long as it is over 100percent of rated the rated flow of the connected fire pump or the maximum flow demand of the fireprotection system(s).


Always flush at a maximum to keep from plugging pump when testing.




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Committee Statement

Resolution: The guidance presented in the existing 14.1.1.3 satisfies the submitters request. The suction piping ispart of the water supply system. The source may be a tank or a domestic supply. The suction pipingconnected to a tank is flushed annually during the required performance test. After the initial flushingprior to connection to the pump the suction piping should be clear except for possible paint flaking orsand. The suction piping from a public source will be flushed annually during the NFPA-25 requiredflushing in Chapter 7. This should satisfy the submitters request. Flushing of Piping, and Table10.10.2.1.3 , Flow Required to Produce a Velocity of 10 ft/sec (3 m/sec) in Pipes.





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14.2.4.1.2 For multiple stage multiple port pumps, a copy of the manufacturer’s certified shop test data foreach impeller shall be available for comparison of the results of the field acceptance test.





Public Input No. 83-NFPA 20-2013 [New Sectionafter 6.2.2]





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]

A copy of the manufacturer's certified pump test characteristic curve shall be available for comparison of theresults of the field acceptance test (Note: manufacture's curves include speed and head velocitycorrections) .


All manufacture's certified curves include speed and head velocity corrections and most are used to check the performance of the pump unit.




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Statement: The term characteristic curve is normally related to a family or range of pump values available for thevarious flows and pressures within a given pump and various driver horsepower combinations.





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14.2.6.2.4

Vibrations

Vibration of the fire pump assembly shall

not be of a magnitude to pose potential damage to any fire

conform to the Hydraulic Institute Standards for Centrifugal, Rotary and Reciprocating Pumps.

A14.2.6.2.4 Vibrations in excess of the limits in the Hydraulic Institue Standards for Centrifugal, Rotary andReciprocating may pose potential damage to fire pump component.


Provides an measurable and enforceable limit on vibration




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Committee Statement


Statement: New guidance is provided in an annex regarding vibrations and the levels of vibrations which maycause damage.





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Public Input No. 108-NFPA 20-2013 [ Section No. 14.2.6.2.6 [Excluding any

Sub-Sections] ]

Where the If the maximum flow available from the water supply cannot provide a flow of 150 percent of thepump's rated flow of the pump , the fire pump shall be operated at the greater of greatest flow possible, aslong as it is over 100 percent of rated flow or the maximum flow demand of the fire protection system(s)maximum allowable discharge the pump design and meets the system's designed flow, to determine itsacceptance.


We shall be testing to maximum possible, not just minimum.




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Committee Statement

Resolution: Although there is a need to test at the maximum flow available the term "100% of the pump design" isambiguous.





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* 14.2.6.2.8 Water Level Detection.

Water level detection shall be required for all vertical turbine pumps installed in wells to , or wet pits, todetermine the suction pressure available suction lift at the shutoff, 100 percent flow, and 150 percent flowpoints, to determine if the pump is operating within its design conditions.

A.14.2.6.2.8

The water depth shall be changed to pressure added to pump discharge pressure.

FT/N distance to water x2.31 = Pressure to be added to discharge pressure


Vertical pumps do not have suction pressure, it is lift.




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Committee Statement


Statement: Vertical pumps do not have suction pressure, it is lift as determined by the differnce between thewater level and the pump discharge flange.





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14.2.6.4 Multiple Stage Multiple Port Pumps.

14.2.6.4.1 Each impeller on a multiple stage multiple port fire pump shall be tested in accordancewith this standard.






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Statement: Part of multiple stage multiple port fire pump requirements





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14.2.6.4.7.2

Engine-driven units shall not show signs of overload or stress (such as change in engine exhaust backpressure) .


To give an example of stress on the engine rather than guessing.




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Committee Statement

Resolution: The section does not need revision. The criteria for adjustable governors provides adequateregulation for the engines when matched to the proper equipment.





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Public Input No. 76-NFPA 20-2013 [ New Section after A.3.3.36 ]

Add New SectionA.3.3.28.11 A multiple stage multiple port pump functions similarly to fire pumps arranged in series. Theprimary difference between multiple stage multiple port pump and fire pumps arranged in series is thatindividual drivers are required for fire pumps arranged in series, and no shut off valve is provided betweenthe impellers on a multiple stage multiple port pump.


NFPA 20 does not currently address multiple stage multiple port fire pumps




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Committee Statement


Statement: NFPA 20 does not currently address multiple stage multiple port fire pumps. Add new definition ofmultiple stage multiple port fire pumps. Within this new definition explain that there may not be anoutlet after each impeller. See new annex language A.3.3.38.11.





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A.4.6.2.4 Water surges are a complex phenomenon that require specialize analysis. In general, pressuresurges are caused by a rapid change in the flow rate. Dead end water mains are more susceptible topressure surges than circulating water mains. Some of the conditions where a rapid change in flow ratemay occur include:

Starting a fire pump

Stopping a fire pump

Rapid closing of a pressure relief valve

Operation of a dry pipe sprinkler systems

Rapidly closing a fire hydrant


Appendix material to aid in understanding pressure surge issues.




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Committee Statement

Resolution: This is a complex issue that extends well beyond the jurisdiction of NFPA 20 and cannot be adequateresolved in NFPA 20.





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A.10.5.2.1.8: The purpose of monitoring pressure reading from a pressure transducer is to detectand correct a transducer that is operating outside of the expected pressure range.

A.10.5.2.1.8(1) . For an electronic pressure sensor on the fire pump discharge, the preset high pressureshould be set approximately 10 psi above the maximum anticipated churn discharge pressure.

A.10.5.2.1.8(2) For an electronic pressure sensor on the fire pump discharge, the preset automatic start lowshould be set approximately 5 psi above the lowest pressure observed in the pressure sensing line duringan automatic pump start.

A.10.5.2.1.8(3) For an electronic pressure sensor on the fire pump suction, the preset low pressure shouldbe set approximately 5 psi below above the minimum pump suction pressure. For an electronic pressuresensor on the fire pump discharge the preset low pressure value should be set approximately 10 psi belowthe pump discharge pressure at 150% of rated flow.


See substantiation for section 10.5.2.1.8 proposal



Public Input No. 22-NFPA 20-2013 [New Section after 10.5.2.1.7.6] Appendix for section 10.5.2.1.8




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Public Input No. 52-NFPA 20-2013 [ Section No. A.4.12 ]

NOTE: This proposal appeared as Comment 13-253 (Log #269) which was held from the A12 ROCon Proposal 13-371.

A.4.12

Special consideration needs to be given to fire pump installations installed belowgrade. Light, heat,drainage, and ventilation are several of the variables that need to be addressed. The vertical elevation ofboth the fire pump and the controller should be coordinated to ensure that both will not be flooded. Somelocations or installations might not require a pump house. Where a pump room or pump house is required,it should be of ample size and located to permit short and properly arranged piping. The suction pipingshould receive first consideration. The pump house should preferably be a detached building ofnoncombustible construction. A one-story pump room with a combustible roof, either detached or well cutoff from an adjoining one-story building, is acceptable if sprinklered. Where a detached building is notfeasible, the pump room should be located and constructed so as to protect the pump unit and controlsfrom falling floors or machinery and from fire that could drive away the pump operator or damage the pumpunit or controls. Access to the pump room should be provided from outside the building. Where the use ofbrick or reinforced concrete is not feasible, metal lath and plaster is recommended for the construction ofthe pump room. The pump room or pump house should not be used for storage purposes. Vertical shaftturbine–type pumps might necessitate a removable panel in the pump house roof to permit the pump to beremoved for inspection or repair. Proper clearances to equipment should be provided as recommended bythe manufacturer's drawings.



20_PI_52_Held_Comment_20-120_Anthony_.pdf Held Comment 20-120


If a fire pump is on an elevated platform to keep it above a flood level, the bottom of the pump controller should not be below this level. It is recognized that this comment will be held over until the next revision cycle because it presents the committee a new concept. We would like to see this concept tracking in the discussion at any point.


Submitter Full Name: Michael Anthony

Organization: University of Michigan

Affilliation: APPA.ORG - Leadership in Education/Association of Education Facility Executives

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Committee Statement


Statement: If a fire pump is on an elevated platform to keep it above a flood level, the bottom of the pumpcontroller should not be below this level. Language revised to eliminate ambiguity


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I, Michael Anthony, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Michael Anthony, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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Public Input No. 71-NFPA 20-2013 [ New Section after A.4.17 ]


A.4.17.2 See A.4.6.2.4 for a discussion of pressure surges.

...


Provide aid in understanding pressure surge issues




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Resolution: This is a complex issue that extends well beyond the jurisdiction of NFPA 20 and cannot be adequateresolved in NFPA 20. Suggest submitter address concerns with NFPA.





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Public Input No. 96-NFPA 20-2013 [ Section No. A.4.18.2.1 ]

Correct Line 27 in Table A. 1.18.2.1 as follows

27. Pressure at Pressure Relief Valve discharge (#1-#25-#26)

A. 4.18.2.1

See Figure A.4.18.2.1 .

Figure A.4.18.2.1 Sample Pressure Relief Valve Calculation.


Correcting error in original Table




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Committee Statement


Statement: Correcting error in original Table





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NOTE: This proposal appeared as Comment 20-125 (Log #110) which was held from the A12 ROC onProposal N/A.

A.9.2.2 Fire protection requirements for multi-building campuses may be effectively met with centrallylocated fire pump facilities.



20_PI_53_Held_Comment_20-125_Anthony_.pdf Held Comment 20-125


Where environmental conditions permit, modular, pre-packaged fire pump houses driven by diesel generators offer very significant advantages. Among them: 1. Recovery of interior enterprise space in all protected buildings. 2. A diesel generator for an electric fire pump provides an independent source of power. 3. Significantly lower first cost and operations and maintenance cost. There are trade-offs. Despite them, we would like to see centralized, multi-building sprinkler systems tracking more explicitly in this document. It is recognized that this comment will be held over until the next revision cycle because it presents the committee a new concept.


Submitter Full Name: Michael Anthony

Organization: University of Michigan

Affilliation: APPA.ORG - Leadeship in Education/Association of Education Facility Executives

Street Address:

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Committee Statement

Resolution: Incorrect Annex section referenced.


I, Michael Anthony, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Michael Anthony, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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Public Input No. 60-NFPA 20-2013 [ Section No. A.9.3.2 ]

A.9.3.2

A reliable power source possesses the following characteristics:

(1) The source power plant has not experienced any shutdowns longer than 4 continuous hoursin the year prior to plan submittal. NFPA 25, Standard for the Inspection, Testing, andMaintenance of Water-Based Fire Protection Systems , requires special undertakings (i.e., firewatches) when a water-based fire protection system is taken out of service for longer than 4than 10 hours. If the normal source power plant has been intentionally shut down for longer than 4hours in the past, it is reasonable to require a backup source of power.

(2) Power outages have not routinely been experienced in the area of the protected facility caused byfailures in generation or transmission. The standard is not intended to require that the normal sourceof power be infallible to deem the power reliable. NFPA 20 does not intend to require a back-upsource of power for every installation using an electric motor–driven fire pump. Note that should thenormal source of power fail in a rare event, the impairment procedures of NFPA 25 could be followedto mitigate the fire risk. If a fire does occur during the power loss, the fire protection system could besupplied through the fire department connection.

(3) The normal source of power is not supplied by overhead conductors outside the protected facility.Fire departments responding to an incident at the protected facility will not operate aerial apparatusnear live overhead power lines, without exception. A backup source of power is required in case thisscenario occurs and the normal source of power must be shut off. Additionally, many utility providerswill remove power to the protected facility by physically cutting the overhead conductors. If the normalsource of power is provided by overhead conductors, which will not be identified, the utility providercould mistakenly cut the overhead conductor supplying the fire pump.

(4) Only the disconnect switches and overcurrent protection devices permitted by 9.2.3 are installed inthe normal source of power. Power disconnection and activated overcurrent protection should onlyoccur in the fire pump controller. The provisions of 9.2.2 for the disconnect switch and overcurrentprotection essentially require disconnection and overcurrent protection to occur in the fire pumpcontroller. If unanticipated disconnect switches or overcurrent protection devices are installed in thenormal source of power that do not meet the requirements of 9.2.2 , the normal source of powermust be considered not reliable and a back-up source of power is necessary.

Typical methods of routing power from the source to the motor are shown in Figure A.9.2 . Otherconfigurations are also acceptable. The determination of the reliability of a service is left up to thediscretion of the authority having jurisdiction.


The 2011 Edition of NFPA 25 revised more than 4 hours to more than 10 hours. While I am not sure the Annex note really makes sense as it would appear, at least it would be technically correct. The Committee may want to further revise the Annex note since the duration in NFPA 25 is not consistent with the 4 hour time period in NFPA 20.




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Committee Statement


Statement: The 2011 Edition of NFPA 25 revised more than 4 hours to more than 10 hours. While I am not surethe Annex note really makes sense as it would appear, at least it would be technically correct. TheCommittee may want to further revise the Annex note since the duration in NFPA 25 is not consistentwith the 4 hour time period in NFPA 20. Added new reference documents.





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Public Input No. 147-NFPA 20-2013 [ New Section after A.10.5.2.1 ]

A.10.5.2.1.2 The purpose of monitoring the pressure transducer is to detect if a transducer thathas drifted upwardly over time from zero. A transducer that drifts downwardly will automaticallycause the fire pump to start when it drifts below the start set point.

A.10.5.2.1.2.1 When the solenoid valve drain opens, the restricting orifice in the pressure sensing linewill keep the pressure at the transducer near zero while the solenoid valve is open. This is the time whenthe transducer can verified to be less than 10 psi.









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Committee Statement







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Public Input No. 174-NFPA 20-2013 [ New Section after A.11.3.2.4.3.4 ]

A.11.4.1.2.5.7 NFPA 25, 2014 allows the installation of an active fuel maintenance system tocontinually maintain the quality of fuel. Since the fuel tank connections cannot be added afteroriginally being installed, this connection will allow for the connection of an active fuelmaintenance system anytime thereafter and conform to piping code requirements.









Street Address:

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Committee Statement


Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, thesystem cannot be appropriately installed if and when the owner decided to implement a system. Thisproposed requirement is only for a connection and a plug. Correct flow direction of check valve.


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Revise the figure to show separation of vent and engine return pipe and fill cap.

A.11.4.4

NFPA 31, Standard for the Installation of Oil-Burning Equipment , can be used as a guide for diesel fuelpiping. Figure A.11.4.4 shows a suggested diesel engine fuel system.

Figure A.11.4.4 Fuel System for Diesel Engine–Driven Fire Pump.



A.11.4.4.pdf Cover Sheet


Some local codes do not allow for fuel flow through vent pipes.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, the


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system cannot be appropriately installed if and when the owner decided to implement a system. Thisproposed requirement is only for a connection and a plug. Correct flow direction of check valve.





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Revise the figure A.11.4.4 to show the proper connection locations for the allowed active fuelmaintenance system.

A.11.4.4

NFPA 31, Standard for the Installation of Oil-Burning Equipment , can be used as a guide for diesel fuelpiping. Figure A.11.4.4 shows a suggested diesel engine fuel system.

Figure A.11.4.4 Fuel System for Diesel Engine–Driven Fire Pump.



A.11.4.4_2_.pdf Cover Sheet


There is confusion in the field as to the correct connection location for the fuel maintenance systems.




Street Address:

City:

State:

Zip:


Committee Statement


Statement: Currently fuel connection requirements are scattered throughout the section. This proposal isprovided to provide clarity for the user. The only additional requirements included in this proposal are:- The specification of tank vent connection of 2 in. (508.8 mm) NPT or in proposed 11.4.1.2.5.3.1 -The addition of a connection for an active fuel maintenance system in 11.4.1.2.5.7. Last cycle this TCdetermined to leave the implementation decision of an active fuel maintenance system to NFPA 25.


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However, if NFPA 20 does not install a fuel tank with a suitable connection for the return pipe, thesystem cannot be appropriately installed if and when the owner decided to implement a system. Thisproposed requirement is only for a connection and a plug. Correct flow direction of check valve.





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A.11.6.4

Active systems that are permanently added to fuel tanks for removing water and particulates from the fuelcan be acceptable, provided the following apply:

(1) All connections are made directly to the tank and are not interconnected with the engine or its fuelsupply and return piping in any way.

(2) There are no valves or other devices added to the engine or its fuel supply and return piping in anyway.

See uploaded file.










Street Address:

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Zip:


Committee Statement


Statement: New requirements for active fuel maintenance systems has been added providing guidance for theinstallation of these systems when used. These requirements provide provisions which will allow theactive fuel maintenance system to be installed either at the time of construction or at a later date. Thiscoordinates with the changes made to NFPA 25, which currently provides guidance on the inspection,testing and maintenance of such systems.


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_______________________________________________________________________________________________




















Public Input No. 140-NFPA 20-2013 [ New Section after A.12.4.1.6 ]

A.12.4.1.4(6) The signal provided is from a common alarm and the indication of the type oftrouble being experienced should be indicated on the engine.



A.12.4.1.4_6_.pdf Cover Sheet


Alarms annunciated on the controller draw immediate concern and phone calls wtihout understanding the true type of trouble. The operator needs to go to the engine to understand the type of trouble or fault.




Street Address:

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Committee Statement







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A.12.7.2.1.2 The purpose of monitoring the pressure transducer is to detect if a transducer thathas drifted upwardly over time from zero. A transducer that drifts downwardly will automaticallycause the fire pump to start when it drifts below the start set point.

A.12.7.2.1.2.1 When the solenoid valve drain opens, the restricting orifice in the pressure sensing line willkeep the pressure at the transducer near zero while the solenoid valve is open. This is the time when thetransducer can be verified to be less than 10 psi.









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Committee Statement







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A12.7.2.1.8: The purpose of monitoring pressure reading from a pressure transducer is to detectand correct a transducer that is operating outside of the expected pressure range.

A.12.7.2.1.8(1) . For an electronic pressure sensor on the fire pump discharge, the preset high pressureshould be set approximately 10 psi above the maximum anticipated churn discharge pressure.

A.12.7.2.1.8(2) For an electronic pressure sensor on the fire pump discharge, the preset automatic start lowshould be set approximately 5 psi above the lowest pressure observed in the pressure sensing line duringan automatic pump start.

A.12.7.2.1.8(3) For an electronic pressure sensor on the fire pump suction, the preset low pressure shouldbe set approximately 5 psi below above the minimum pump suction pressure. For an electronic pressuresensor on the fire pump discharge the preset low pressure value should be set approximately 10 psi belowthe pump discharge pressure at 150% of rated flow.


See substantiation for 12.2.1.8 proposal



Public Input No. 23-NFPA 20-2013 [New Section after 12.7.2.1.7] Appendix Material for 12.7.2.1.7




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Committee Statement




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A.14.2.6.4


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The test procedure is as follows:

(1) Make a visual check of the unit. If hose and nozzles are used, see that they are securely tied down.See that the hose valves are closed. If a test meter is used, the valve on the discharge side of themeter should be closed.

(2) Start the pump.

(3) Partially open one or two hose valves, or slightly open the meter discharge valve.

(4) Check the general operation of the unit. Watch for vibration, leaks (oil or water), unusual noises, andgeneral operation. Adjust packing glands.

(5) Measure water discharge. The steps to do so are as follows:

(a) Where a test valve header is used, regulate the discharge by means of the hose valves and aselection of the nozzle tips. It will be noticed that the play pipe has a removable tip. This tip has

a 1 1 ? 8 in. (28.6 mm) nozzle, and when the tip is removed, the play pipe has a 1 3 ? 4 in.

(44.4 mm) nozzle. Hose valves should be shut off before removing or putting on the 1 1 ? 8 in.(28.6 mm) tip.

(b) Where a test meter is used, regulate the discharge valve to achieve various flow readings.

(c) Important test points are at 150 percent rated capacity, rated capacity, and shutoff. Intermediatepoints can be taken if desired to help develop the performance curve.

(6) Record the following data at each test point (see Figure A.14.2.6.4 ):

(a) Pump rpm

(b) Suction pressure

(c) Discharge pressure

(d) Number and size of hose nozzles, pitot pressure for each nozzle, and total gpm (L/min); for testmeter, simply a record of gpm (L/min)

(e) Amperes (each phase)

(f) Volts (phase to phase)

(7) Calculation of test results is as follows:

(a) Rated Speed. Determine that pump is operating at rated rpm.

(b) Capacity. For hose valve header, using a fire stream table, determine the gpm (L/min) for each

nozzle at each pitot reading. For example, 16 psi (1.1 bar) pitot pressure with 1 3 ? 4 in. (44.4mm) nozzle indicates 364 gpm (1378 L/min). Add the gpm for each hose line to determine totalvolume. For test meter, the total gpm (L/min) is read directly.

(c) Total Head for Horizontal Pump . Total head is the sum of the following:

i. Pressure measured by the discharge gauge at pump discharge flange

ii. Velocity head difference, pump discharge, and pump suction

velocity head= h v = V 2 /2g

iii. Gauge elevation corrections to pump centerline (plus or minus)

iv. Pressure measured by suction gauge at pump suction flange — negative value when pressure isabove zero

(a) Total Head for Vertical Pump. Total head is the sum of the following:


ii. Velocity head at the discharge

iii. Distance to the supply water level

iv. Discharge gauge elevation correction to centerline of discharge


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(b) Electrical Input. Voltage and amperes are read directly from the volt/ammeter. This reading iscompared to the motor nameplate full-load amperes. The only general calculation is todetermine the maximum amperes allowed due to the motor service factor. In the case of 1.15service factor, the maximum amperes are approximately 1.15 times motor amperes, becausechanges in power factor and efficiency are not considered. If the maximum amperes recorded onthe test do not exceed this figure, the motor and pump will be judged satisfactory. It is mostimportant to measure voltage and amperes accurately on each phase should the maximumamperes logged on the test exceed the calculated maximum amperes. This measurement isimportant because a poor power supply with low voltage will cause a high ampere reading. Thiscondition can be corrected only by improvement in the power supply. There is nothing that canbe done to the motor or the pump.

(c) Correction to Rated Speed. For purposes of plotting, the capacity, head, and power should becorrected from the test values at test speed to the rated speed of the pump. The corrections aremade as follows.

Capacity:

where:

Q 1 = capacity at test speed in gpm (L/min)

Q 2 = capacity at rated speed in gpm (L/min)

N 1 = test speed in rpm

N 2 = rated speed in rpm

Head:

where:

H 1 = head at test speed in ft (m)

H 2 = head at rated speed in ft (m)

Horsepower:

where:

hp 1 = kW (horsepower) at test speed

hp 2 = kW (horsepower) at rated speed

(d) Conclusion . The final step in the test calculation is generally a plot of test points. Ahead-capacity curve is plotted, and an ampere-capacity curve is plotted. A study of these curveswill show the performance picture of the pump as it was tested.

Figure A.14.2.6.4 Centifugal Fire Pump Acceptance Test Form. (Source: National Fire SprinklerAssociation, Inc.)


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Figure A.14.2.6.4 Continued


helpful formula.





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Street Address:

City:

State:

Zip:


Committee Statement

Resolution: Velocity pressure adjustments where applicable are available from the manufacturer. The velocityhead formula is currently provided in A.3.3.23.6.





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Replace Figure A.14.2.6.4 with the uploaded file.

A.14.2.6.4


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The test procedure is as follows:

(1) Make a visual check of the unit. If hose and nozzles are used, see that they are securely tied down.See that the hose valves are closed. If a test meter is used, the valve on the discharge side of themeter should be closed.

(2) Start the pump.

(3) Partially open one or two hose valves, or slightly open the meter discharge valve.

(4) Check the general operation of the unit. Watch for vibration, leaks (oil or water), unusual noises, andgeneral operation. Adjust packing glands.

(5) Measure water discharge. The steps to do so are as follows:

(a) Where a test valve header is used, regulate the discharge by means of the hose valves and aselection of the nozzle tips. It will be noticed that the play pipe has a removable tip. This tip has

a 1 1 ? 8 in. (28.6 mm) nozzle, and when the tip is removed, the play pipe has a 1 3 ? 4 in.

(44.4 mm) nozzle. Hose valves should be shut off before removing or putting on the 1 1 ? 8 in.(28.6 mm) tip.

(b) Where a test meter is used, regulate the discharge valve to achieve various flow readings.

(c) Important test points are at 150 percent rated capacity, rated capacity, and shutoff. Intermediatepoints can be taken if desired to help develop the performance curve.

(6) Record the following data at each test point (see Figure A.14.2.6.4 ):

(a) Pump rpm

(b) Suction pressure

(c) Discharge pressure

(d) Number and size of hose nozzles, pitot pressure for each nozzle, and total gpm (L/min); for testmeter, simply a record of gpm (L/min)

(e) Amperes (each phase)

(f) Volts (phase to phase)

(7) Calculation of test results is as follows:

(a) Rated Speed. Determine that pump is operating at rated rpm.

(b) Capacity. For hose valve header, using a fire stream table, determine the gpm (L/min) for each

nozzle at each pitot reading. For example, 16 psi (1.1 bar) pitot pressure with 1 3 ? 4 in. (44.4mm) nozzle indicates 364 gpm (1378 L/min). Add the gpm for each hose line to determine totalvolume. For test meter, the total gpm (L/min) is read directly.

(c) Total Head for Horizontal Pump . Total head is the sum of the following:


ii. Velocity head difference, pump discharge, and pump suction

iii. Gauge elevation corrections to pump centerline (plus or minus)

iv. Pressure measured by suction gauge at pump suction flange — negative value whenpressure is above zero

(d) Total Head for Vertical Pump. Total head is the sum of the following:


ii. Velocity head at the discharge

iii. Distance to the supply water level

iv. Discharge gauge elevation correction to centerline of discharge

(e) Electrical Input. Voltage and amperes are read directly from the volt/ammeter. This reading iscompared to the motor nameplate full-load amperes. The only general calculation is todetermine the maximum amperes allowed due to the motor service factor. In the case of 1.15


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service factor, the maximum amperes are approximately 1.15 times motor amperes, becausechanges in power factor and efficiency are not considered. If the maximum amperes recorded onthe test do not exceed this figure, the motor and pump will be judged satisfactory. It is mostimportant to measure voltage and amperes accurately on each phase should the maximumamperes logged on the test exceed the calculated maximum amperes. This measurement isimportant because a poor power supply with low voltage will cause a high ampere reading. Thiscondition can be corrected only by improvement in the power supply. There is nothing that canbe done to the motor or the pump.

(f) Correction to Rated Speed. For purposes of plotting, the capacity, head, and power should becorrected from the test values at test speed to the rated speed of the pump. The corrections aremade as follows.

Capacity:

where:

Q 1 = capacity at test speed in gpm (L/min)

Q 2 = capacity at rated speed in gpm (L/min)

N 1 = test speed in rpm

N 2 = rated speed in rpm

Head:

where:

H 1 = head at test speed in ft (m)

H 2 = head at rated speed in ft (m)

Horsepower:

where:

hp 1 = kW (horsepower) at test speed

hp 2 = kW (horsepower) at rated speed

(g) Conclusion . The final step in the test calculation is generally a plot of test points. Ahead-capacity curve is plotted, and an ampere-capacity curve is plotted. A study of these curveswill show the performance picture of the pump as it was tested.

Figure A.14.2.6.4 Centifugal Fire Pump Acceptance Test Form. (Source: National Fire SprinklerAssociation, Inc.)


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Figure A.14.2.6.4 Continued



Signature_page.pdf Cover Sheet

20_Underwood_Fig_A.14.2.6.4.pdf Figure A.14.2.6.4



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Existing Figure is incorrect.Document should be an NFPA form as is the standard for all other documents.


Submitter Full Name: Darrell Underwood

Organization: Underwood Fire Equipment, Inc.

Street Address:

City:

State:

Zip:


Committee Statement

Resolution: The proposed form requires additional review and revision. A task group will be formed to review andprepare a form for submittal at the 2nd draft stage.


I, Darrell Underwood, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyrightin this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into thiscopyright assignment.

By checking this box I affirm that I am Darrell Underwood, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


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Public Input No. 158-NFPA 20-2013 [ Section No. C.1.2.5 ]

C.1.2.5 IEEE Publications.

Institute of Electrical and Electronics Engineers, Three Park Avenue, 17th Floor, New York, NY10016-5997.

IEEE 141, Electric Power Distribution for Industrial Plants, 1986.

IEEE 241, Electric Systems for Commercial Buildings, 1990.

IEEE 493, Recommended Practice for the Design of Reliable Industrial and Commercial Power Systems ,2007.

Anthony, M.; Arno, R.; Saba, P.S.; Schuerger, R.; Beirne, M.; "Reliability engineering applied to CriticalOperations Power Systems (COPS), " Industrial and Commercial Power Systems Technical Conference(I&CPS), 2011 IEEE , vol., no. pp.1,8, 1-5 May 2011

Anthony, M.; Arno, R.; Dowling, N.; Schuerger, R., "Reliability Analysis for Power to Fire Pump Using FaultTree and RBD," Industry Applications, IEEE Transactions on, vol.49, no.2, pp.997,1003, March-April 2013

Arno, R.G.; Stoyas, E.; Schuerger, R., "Risk Analysis for NEC Article 708 Critircal Operations PowerSystems," Industry Applications Society Annual Meeting, 2009, IAS 2009, IEEE, vol., no., pp.1,7, 4-8 Oct.2009

Arno, R.G.; Stoyas, E.; Schuerger, R., "NEC Article 708," Industry Application Magazine, IEEE, vol.17,no.1, pp.20,25, Jan.-Feb. 2011

Anthony, M.; Arno, R.; Dowling, N.; Schuerger, R., "Reliability Analysis for Power to Fire Pump Using FaultTree and RBD," Industry Applications, IEEE Transactions on, vol.49, no.2, pp.997,1003, March-April 2013



20_Neal_Dowling_proposal_IEEE_references.pdf Cover Sheet


The Fire Protection Research Foundation has published "Guidance Document for Incorporating Risk Concepts into NFPA Codes and Standards", March 2007. The text proposed to be added to NFPA 20 supplies bibliographic referenes to works that describe how to perform risk analyses.


Submitter Full Name: NEAL DOWLING

Organization: M TECH

Street Address:

City:

State:

Zip:


Committee Statement


Statement: The Fire Protection Research Foundation has published "Guidance Document for Incorporating RiskConcepts into NFPA Codes and Standards", March 2007. The text proposed to be added to NFPA 20supplies bibliographic referenes to works that describe how to perform risk analyses.


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I, NEAL DOWLING, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that Iacquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar orderivative form is used. Except to the extent that I may lack authority to make an assignment of content identified above, I hereby warrantthat I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am NEAL DOWLING, and I agree to be legally bound by the above Copyright Assignment and theterms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will,upon my submission of this form, have the same legal force and effect as a handwritten signature


Institute of Electrical and Electronics Engineers, Three Park Avenue, 17th Floor, New York, NY 10016-5997


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Documents

Statement of Problem and Substantiation for Public Input ... make and model number 6. ... Suction main size, length, location, type of material, and point of connection to water supply