Technical Committee on Multiple Burner Boilers - · PDF file · 2016-04-06items warranting further discussion. ... API is developing a recommended practice on “industrial fired

Technical Committee on Single Burner Boilers

AGENDA

Embassy Suites Phoenix – Tempe 4400 South Rural Road

Tempe, AZ 85282 January 13, 2014

1. Chair’s welcome, call to order, and opening remarks at 8:00 am MST.

2. Roll call of Committee Members and Guests

3. Approval of Minutes from the March 12, 2013 teleconference meeting. The minutes are posted on the NFPA 85 document information page, www.nfpa.org/85next.

4. Staff Liaison Report

A. Committee membership update (For the period Feb. 5, 2013 – Dec 10, 2013)

Name Category Change Date

Octavio Serrano M (Alt. to D. Bohling) Appoint 03/07/2013

David Bohling M (Principal) Appoint 03/07/2013

Brandon Thorpe SE (Alt. to J. Fehr) Appoint 03/07/2013

Marc Hunter SE (Principal) Appoint 03/07/2013

Robert Dobbins I (Principal) Appoint 03/07/2013

Richard Gallagher I (Alt. to R. Dobbins) Appoint 03/07/2013

John Eley M (Principal) Appoint 07/29/2013

Charles Keith SE (Principal) Appoint 07/29/2013

Mark Urda SE (Alt. to M. Hunter) Appoint 07/29/2013

Patrick Jennings I (Principal) Appoint 07/29/2013

Ronald Adcock I (Principal) Appoint 07/29/2013

(Total Voting Members – 21; M=29%, SE=33%, U=10%; I=24%; E = 5%)

B. Revision Cycle Review and timeline (Attachment A)

5. New Business

A. Review Public Comments on Chapter 5. The committee should review the Public Comments (Attachment B) and revise chapter 5 and related annex material as appropriate.

B. Review BCS-FUN actions. The committee members are asked to review the actions of the Fundamentals committee (Attachment C) and bring forward any items warranting further discussion. The Fundamentals Committee specifically requests that the SBB committee review PC 82 (Attachment D).

6. Old Business

A. Organization of Chapter 5. In the First Draft meeting, the committee discussed the organization and usefulness relative to new applications of single burner boilers.

http://www.nfpa.org/85next

After some discussion, a task group was assigned to review chapter 5, specifically for the following topics:

i. User-friendliness: the chapter provides a procedural structure, separated by fuel. Is this user-friendly for current applications?

ii. New Fuels: Currently, NFPA 85 covers only natural gas and fuels “similar in heat content and characteristics.” Biogas and other waste-derived fuels are being introduced into the market. Should these be covered by NFPA 85, specifically chapter 5?

iii. Emissions/ NOx Control Equipment: Chapter 5 does not currently address emissions control equipment such as SCRs. Should chapter 5 provide coverage in addition to what is provided in chapter 4?

iv. Requirements: The current requirements in chapter 5 provide prescriptive requirements for how to accomplish measurements and interlocking actions. Should the requirements be revised to be more performance based? For example, instead of specifying the location of a pressure switch, should the requirement say that the pressure shall be controlled within manufacturer’s specified limits?

Members of the task group are: J. Eibl (chair); D. Bohling, K. Carlisle, T. Jablkowski, and S. Matz. Anyone interested in volunteering should contact NFPA Staff.

F. API 538. API is developing a recommended practice on “industrial fired boilers for general refinery and petrochemical service.” In discussions with the BCS-FUN technical committee, it was reported that the document offers a guide to using the equivalency clause in section 1.5 of NFPA 85 to support designs specific to use in petrochemical applications. NFPA Staff contacted the API task group chair and learned that work on the draft document is complete, but no schedule has been set for publication because the parent committee is in the process of resolving the last set of public comments on the draft document. NFPA Staff will continue to monitor this issue.

7. Other Items?

8. Date/Location of Next Meeting. This concludes the committee work for the Fall 2014 revision cycle. The next meeting will be scheduled as needed.

9. Adjournment.

Attachment A: Fall 2014 Revision Cycle

Process

StageProcess Step Dates for TC

Dates for TC

with CC

Public Input Closing Date* 1/4/2013 1/4/2013

Final date for TC First Draft Meeting 6/14/2013 3/15/2013

Posting of First Draft and TC Ballot 8/2/2013 4/26/2013

Final date for Receipt of TC First Draft ballot 8/23/2013 5/17/2013

Final date for Receipt of TC First Draft ballot ‐ recirc 8/30/2013 5/24/2013

Posting of First Draft for CC Meeting 5/31/2013

Final date for CC First Draft Meeting 7/12/2013

Posting of First Draft and CC Ballot 8/2/2013

Final date for Receipt of CC First Draft ballot 8/23/2013

Final date for Receipt of CC First Draft ballot ‐ recirc 8/30/2013

Post Final First Draft for Public Comment 9/6/2013 9/6/2013

Public Comment closing date 11/15/2013 11/15/2013

Final Date to Publish Notice of Consent Documents (Documents

That Received No Comments)11/22/2013 11/22/2013

Appeal Closing Date for Consent Documents (15 Days) (Documents

That Received No Comments)12/7/2013 12/7/2013

Final date for TC Second Draft Meeting 5/2/2014 1/24/2014

Posting of Second Draft and TC Ballot 6/13/2014 3/7/2014

Final date for Receipt of TC Second Draft Ballot 7/7/2014 3/28/2014

Final date for receipt of TC Second Draft ballot ‐ recirc 7/14/2014 4/4/2014

Posting of Second Draft for CC Mtg 4/11/2014

Final date for CC Second Draft Meeting 5/23/2014

Posting of Second Draft for CC Ballot 6/13/2014

Final date for Receipt of CC Second Draft ballot 7/7/2014

Final date for Receipt of CC Second Draft ballot ‐ recirc 7/14/2014

Post Final Second Draft for NITMAM Review 7/18/2014 7/18/2014

Notice of Intent to Make a Motion (NITMAM) Closing Date 8/22/2014 8/22/2014

Posting of Certified Amending Motions and Consent Documents 10/17/2014 10/17/2014Appeal Closing Date for Consent Documents (15 Days) 11/1/2014 11/1/2014SC Issuance Date for Consent Documents (25 Days) 11/11/2014 11/11/2014

Tech Session Association Meeting for Documents with CAMs 6/22‐25/2015 6/22‐25/2015

Appeal Closing Date for Documents with CAMs (20 Days) 7/15/2015 7/15/2015SC Issuance Dates for Documents with CAMs 8/27/2015 8/27/2015

Comment Stage

(Second Draft)

Tech Session

Preparation

(& Issuance)

Appeals and

Issuance

2014 FALL REVISION CYCLE

Public Input

Stage

(First Draft)

*Public Input Dates may vary according to documents and schedules for Revision Cycles may change. Please check the NFPA Website for the most up‐to‐date information on

Public Input Closing Dates and schedules at www.nfpa.org/document # (i.e. www.nfpa.org/101) and click on the Next Edition tab

Attachment B: Public Comments

Public Comment No. 19-NFPA 85-2013 [ Section No. 5.3.6.1 ]

5.3.6.1 For single burner boilers, the boiler control system shall be permitted to be combined with the burnermanagement system under one of the following conditions:

(1)

(2) If the combined boiler control and burner management system is specifically listed or labeled for theapplication

(3)

Statement of Problem and Substantiation for Public Comment

Removed the term "Programmable Logic Contrller (PLC)" because it limits the user to a specific technology. Other technologies such as "Distributed Control Systems" can also meet the technical requirements of this paragraph and should be allowed.

Submitter Information Verification

Submitter Full Name: Steven GrafOrganization: Emerson Process ManagementStreet Address:City:State:Zip:Submittal Date: Fri Oct 25 09:47:13 EDT 2013

Copyright Assignment

I, Steven Graf, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in thisPublic Comment (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 Comment in this or another similar orderivative form is used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter intothis copyright assignment.

By checking this box I affirm that I am Steven Graf, 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

* If the fuel-air ratio is controlled externally from the boiler control system

* A single safety-rated programmable logic controller (PLC) system shall be permitted to be used toimplement both burner management system safety and process logic, if the processor andinput/output (I/O) modules are approved or certified by a notified body to be at least SIL 2 capableaccording to IEC 61508, Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems, when the burner management system logic is isolated from other logic and whenthe related data of the burner management system program are protected from being unintentionallyaffected by data of other user programs.

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Public Comment No. 83-NFPA 85-2013 [ Section No. 5.3.6.1 ]

5.3.6.1 For single burner boilers, the boiler control system shall be permitted to be combined with the burnermanagement system under one of the following conditions:

(1)

(2) If the combined boiler control and burner management system is specifically listed or labeled for theapplication

(3)


Paragraph 5.3.6.1(3) is new text from the 2011 Edition. As stated in the First Draft, the requirements for this configuration are limited to the PLC itself with no apparent regard to how that is implemented within the BMS, nor whether the overall PFD is adequate for the hazard scenarios applicable to the particular unit design and installation. Implementation of the IEC standards involves evaluation and demonstration of adequate protection including evaluation of the safety function (all components), not just the PLC itself. In addition, the ability of users to comply with IEC 61511 should also be considered. The basic problem is delving into IEC standards to allow use of a specific device in this manner without consideration of the rest of the IEC requirements and methodology once that door is opened. Some level of additional qualification is needed if this allowance is granted. This revised wording is an attempt to get at that qualification should this remain in the document.


Submitter Full Name: John deRuyterOrganization: The DuPont Company, Inc.Street Address:City:State:Zip:Submittal Date: Fri Nov 15 16:26:56 EST 2013


I, John deRuyter, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright inthis Public Comment (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend thatI acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Comment in this or another similaror derivative form is used. I hereby warrant that I am the author of this Public Comment and that I have full power and authority to enter intothis copyright assignment.

By checking this box I affirm that I am John deRuyter, 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

* If the fuel-air ratio is controlled externally from the boiler control system

* A single safety-rated programmable logic controller (PLC) shall be permitted to be used toimplement both burner management system safety and process logic, if the processor andinput/output (I/O) modules are approved or certified by a notified body to be at least SIL 2 capableaccording to IEC 61508, Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems, when the burner management system logic is isolated and I/O are isolated fromother logic and boiler controls, and when the related data of the burner management system programare protected from being unintentionally affected by data of other user programs. Overalldetermination of adequacy of this configuration must include evaluation of all components of the fullsafety function and the ability of users to ensure continued long term capability and functions relativeto IEC 61511 .

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Attachment C: BCS-FUN Second Revisions

Second Revision No. 16-NFPA 85-2013 [ Global Comment ]

Revise all liquid fuel supply system diagrams with equipment isolation valves to be consistent withthe revised fuel gas supply system diagrams. See attached diagrams.


Submitter Full Name: [ Not Specified ]

Organization: [ Not Specified ]

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Submittal Date: Thu Dec 05 13:22:34 EST 2013

Committee Statement

CommitteeStatement:

The liquid fuel system diagrams were revised to reflect the equipment isolation valve to beconsistent with changes made to fuel gas supply system diagrams throughout the code.

ResponseMessage:

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Second Revision No. 1-NFPA 85-2013 [ Section No. 3.3.2.4 ]

3.3.2.4 * Excess Air.Air supplied for combus on in excess of

the stoichiometric mixture of air and fueltheore cal air .




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Submittal Date: Wed Dec 04 11:15:01 EST 2013

Committee Statement

CommitteeStatement:

The committee reinstated the previous definition of excess air and moved the previous definition oftheoretical air to the annex (SR-2). The dictionary definition does not adequately describe the term"stoichiometry" as used in the context of the First Revision.

ResponseMessage:

Public Comment No. 40-NFPA 85-2013 [Section No. 3.3.2.4]


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Second Revision No. 3-NFPA 85-2013 [ New Section after 3.3.25.2 ]

3.3.26.3 Manual Supervised Burner Management System. Aburner management system by which a furnace is purgedand a burner is started, ignited, and stopped manually. Interlocksare included to ensure that the operation followsestablished, proper procedures.




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Committee Statement

CommitteeStatement:

The definition is reinstated because the term is now used in the single burner boilerchapter.

Response Message:

Public Comment No. 85-NFPA 85-2013 [Section No. 3.3.26]


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Second Revision No. 4-NFPA 85-2013 [ Section No. 3.3.43 ]

3.3.43 Direct-Fired System.

A system in which the fuel is pulverized and delivered in suspension directly to the burner(s).




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Committee Statement

Committee Statement: "3.3.43 Direct- Fired" should use either a "-" or a space, not both.

Response Message:



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3.3.52.4 Induced Draft (ID) Fan.

A fan downstream of the combustion process used to remove the products of combustion from the boiler,HRSG, or flue gas ductwork.




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Committee Statement

Committee Statement: The text was missing a space between ",HRSG".

Response Message:



5 of 17 12/5/2013 1:24 PM

Second Revision No. 6-NFPA 85-2013 [ Sections 3.3.76.1, 3.3.76.2, 3.3.76.3, 3.3.76.4,

3.3.76.5, ... ]

Sections3.3.76.1, 3.3.76.2, 3.3.76.3, 3.3.76.4, 3.3.76.5, 3.3.76.6, 3.3.76.7, 3.3.76.8, 3.3.76.9, 3.3.76.10, 3.3.76.11, 3.3.76.12

3.3.76.1 Normal Shutdown, High Steam Pressure Interlock.

A pressure-actuated device that is arranged to effect a normal burner shutdown when the steam pressureexceeds a preset pressure.

3.3.76.2 Normal Shutdown, High Water Temperature Interlock.

A temperature-actuated device that is arranged to effect a normal burner shutdown when the watertemperature exceeds a preset temperature.

3.3.76.3 Process Monitoring, High Oil Temperature Interlock.

A temperature-actuated device that initiates a signal when oil temperature rises above the limits that arerequired to maintain the viscosity range recommended by the burner manufacturer.

3.3.76.4 Process Monitoring, Low Oil Temperature Interlock.

A temperature-actuated device that initiates a signal when the oil temperature falls below the limits that arerequired to maintain the viscosity range recommended by the burner manufacturer.

3.3.76.5 Proof of Closure Interlock.

A device that provides feedback that a piece of equipment is in the closed position.

3.3.76.6 Safety Shutdown, Excessive Steam Pressure Interlock.

A pressure-actuated device that is arranged to effect a safety shutdown of the burner when the steampressure exceeds a preset pressure.

3.3.76.7 Safety Shutdown, Excessive Water Temperature Interlock.

A temperature-actuated device that is arranged to effect a safety shutdown of the burner when the watertemperature exceeds a preset temperature.

3.3.76.8 Safety Shutdown, High Gas Pressure Interlock.

A pressure-actuated device that is arranged to effect a safety shutdown or to prevent starting when the gaspressure exceeds the preset value.

3.3.76.9 Safety Shutdown, Low Gas Pressure Interlock.

A pressure-actuated device that is arranged to effect a safety shutdown or to prevent starting when the gaspressure falls below the preset value.

3.3.76.10 Safety Shutdown, Low Oil Pressure Interlock.

A pressure-actuated device that is arranged to effect a safety shutdown or to prevent starting when the oilpressure falls below the preset value.

3.3.76.11 Safety Shutdown, Low Water Cutout Auxiliary Interlock.

On single burner boilers, a device that is arranged to effect a safety shutdown of the burner when the waterlevel in the boiler falls to a predetermined low level.

3.3.76.12 Safety Shutdown, Low Water Cutout Interlock.

A device that is arranged to effect a safety shutdown or master fuel trip when the water level in the boiler orHRSG falls to a predetermined low level.




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Committee Statement


6 of 17 12/5/2013 1:24 PM

CommitteeStatement:

New items 3.3.76.1 through 3.3.76.12 are a list of interlocks required by SBB in Chapter 5, notdefinitions. The same applies to original items 3.3.156.1 through 3.3.156.12.

ResponseMessage:

Public Comment No. 43-NFPA 85-2013 [Sections 3.3.76.1, 3.3.76.2, 3.3.76.3, 3.3.76.4, 3.3.76.5, ...]



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Second Revision No. 13-NFPA 85-2013 [ New Section after 3.3.102 ]

3.3.103 Purge Into Service.

To displace air in a fuel gas piping system with inert gas, and then displace the inert gas with fuel gas.

3.3.104 Purge Out of Service.

To displace the fuel gas in a fuel gas piping system by inert gas, and then displace the inert gas with air.




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Committee Statement

CommitteeStatement:

New definitions are added to support requirements added to chapter 4 in SR 14 and SR15.

Response Message:


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3.3.124 * Test Block Capability.

The point on the fan head versus flow characteristic curve at which the fan is selected. This is the calculatedoperating point associated with the maximum continuous rating of the boiler or HRSG, plus the head andflow margins

A.3.3.124 Test Block Capability. The test block capability of the fan is a theoretical duty that includes somemargin beyond the actual volume and pressure requirements .




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Committee Statement

CommitteeStatement:

The committee deleted the second sentence of the definition because it addressed only theboilers and HRSGs. The committee created new annex material to clarify the intent of the term inthe context of NFPA 85.

ResponseMessage:



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Second Revision No. 14-NFPA 85-2013 [ New Section after 4.2.7 ]

4.2.8*

When fuel gas is introduced into piping downstream of the equipment isolation valve, the contents shall bedisplaced in accordance with one of the following:

(1) Discharged through a permanently-installed venting system; or

(2) Discharged into the boiler or HRSG in accordance with the normal start-up sequence; or

(3) Purged into service in accordance with chapter 7 of NFPA 56.

Supplemental Information

File Name Description

A_4_2_8.docx




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Committee Statement

CommitteeStatement:

New requirements were added to address charging fuel gas piping that is within the scope of NFPA85, i.e. piping downstream of the equipment isolation valve. Unlike other equipment gas trains, NFPA85 requires many vent valves that can be utilized for the purpose of safely charging the piping systemwith fuel gas. In addition, the pipe volume ratio of such piping relative to pipe normally open toatmosphere is small, therefore discharging through the permanently-installed venting system or as partof the normal start-up sequence generally provides an adequate level of safety. Where this pipingsection presents a significant volume, users may consider using NFPA 56 procedures in lieu of theventing system or start-up procedure.

ResponseMessage:


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Second Revision No. 15-NFPA 85-2013 [ New Section after 4.4.1.7 ]

4.4.2 Purging Fuel Gas Piping Into and Out of Service.

4.4.2.1 Prior to the opening of fuel gas piping systems for maintenance, the piping section shall be isolatedfrom the fuel gas supply and the fuel gas piping system downstream of the equipment isolation valve shall bepurged out of service in accordance with chapter 8 of NFPA 56.

4.4.2.2 Following maintenance, fuel gas shall be introduced into piping downstream of the equipmentisolation valve in accordance with 4.2.8.




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Committee Statement

CommitteeStatement:

New requirements were added for removing piping systems from service when maintenance isneeded. NFPA 56 is referenced because it provides guidance for industrial piping systems, andspecifically power plants as well as the hazards of nitrogen and other inert gases during purgeprocedures. New requirements were added to address charging fuel gas piping that is within the scopeof NFPA 85, i.e. piping downstream of the equipment isolation valve. Unlike other equipment gas trains,NFPA 85 requires many vent valves that can be utilized for the purpose of safely charging the pipingsystem with fuel gas. In addition, the pipe volume ratio of such piping relative to pipe normally open toatmosphere is small, therefore discharging through the permanently-installed venting system or as partof the normal start-up sequence generally provides an adequate level of safety. Where this pipingsection presents a significant volume, users may consider using NFPA 56 procedures in lieu of theventing system or start-up procedure.

ResponseMessage:


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4.5.4 *

The design shall not require any deliberate defeating of an interlock to start or operate equipment.

Supplemental Information

File Name Description

Annex_4_5_4.docx New Annex text for 4.5.4.




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Committee Statement

CommitteeStatement:

The committee recognizes that conditioning of interlocks is typically required for normal start-upand operation. The committee created annex text to advise users that such conditioning is notprohibited by the new 4.5.4 requirement.

ResponseMessage:



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4.8.1

Where multiple boilers or HRSGs are supplied from the same fuel supply source, there an equipmentisolation valve shall be a means of manual isolation provided for each boiler and HRSG.




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Committee Statement

CommitteeStatement:

The intent is to isolate the fuel supply to individual boilers or HRSGs, which is not clear in originaltext. The requirement is updated to reflect the newly-defined term equipment isolation valve.

ResponseMessage:



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4.10.3.1 *

The requirements in Section 4.10.3 shall apply to flue gas path auxiliary systems that inject fuel, oxidizer, orcombustible reagent into the boiler enclosure or flue gas path when in operation.

A.4.10.3.1

Flue gas path auxiliary systems shall be that inject fuel, oxidizer, or combustible reagent into a boilerenclosure or flue gas path can include but are not limited to sulfur burner systems, ammonia injectionsystems, activated carbon injection systems, soot blowing or soot cleaning systems, and fired reheatersystems.




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Committee Statement

CommitteeStatement:

The mandatory text is revised to be a more general description of flue gas path auxiliary systemsand the list of examples is moved to the annex. There could be other systems that should meet therequirements of this section that are not in the "list", that could be construed as the requirements notapplying to them. The proposed revised wording and Annex material addresses these concerns.

ResponseMessage:



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4.11.1.1

The basic requirement of an interlock system for a unit boiler or combustion system shall accomplish thefollowing:

(1) Protect personnel from injury

(2) Protect equipment from damage

(3) Protect boiler operation by limiting actions to a prescribed operating sequence or by initiating tripdevices when approaching an out-of-range or unstable operating condition




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Committee Statement

CommitteeStatement:

The term "unit" has a definition that would inappropriately limit the application of this requirement.The term "boiler or HRSG" would not include pulverized fuel systems. The term "boiler or combustionsystem" should define the intended scope more appropriately. The term "boiler" was removed fromthe last line for the same reason.

ResponseMessage:



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Second Revision No. 12-NFPA 85-2013 [ Section No. 4.12.3.5.7 ]

4.12.3.5.7

The response time from flame failure to the de-energization initiation of the trip signal to the fuel safetyshutoff devices shall not exceed 4 seconds, including any time delay associated with the flame detector.




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Committee Statement

CommitteeStatement:

The text was revised to reflect that not all fuel shutoff devices are de-energized to close. Forexample Coal Line Shutoff Valves can be "energize to open" and "energize to close." On newinstallations, some Boiler OEMs are providing dual coil solenoid and motor operated valves for Gasand Oil igniters.

ResponseMessage:

Public Comment No. 18-NFPA 85-2013 [Section No. 4.12.3.5.7]


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Second Revision No. 2-NFPA 85-2013 [ Section No. A.3.3.2.4 ]

A.3.3.2.4 Excess Air.

This is not the same as air-rich, as defined in 3.3.5. The theoretical air is the chemically correct quantity

of air needed for complete combustion of a given quantity of a specific fuel.




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Committee Statement

CommitteeStatement:

The committee relocated the existing definition to the annex material because the only locationthe term is used is in the definition for excess air.

ResponseMessage:


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Attachment D: PC 82

Public Comment No. 82-NFPA 85-2013 [ New Section after 4.1.4 ]

TITLE OF NEW CONTENT: 4.1.4.1

Single burner boilers listed and approved for unattended operation shall not require a process hazardanalysis.


Single burner boilers desinged and listed for unattended operation have been proven by operating history to have sufficient controls and safety interlocks to prevent unsafe operation that result in fires or explosions. When such boilers are acceptable to the authority having jurisdiction, a PHA should not have too be performed before such a boiler is installed abd operated.

The submitter would have ideally liked to have added this paragraph in Chapter 5 for single burner boiles, but could not find an acceptable spot within that chapter and therefore elected to place it after the paragraph in Chapter 4 that requires a PHA for unattended boilers.


Submitter Full Name: Michael Polagye

Organization: FM Global

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Submittal Date: Fri Nov 15 16:09:20 EST 2013

Committee Statement

CommitteeAction:

Rejected

Resolution: The exception for single burner boilers is not appropriate in chapter 4 because application-specific requirements should be in the subject chapters. The Fundamentals committeeencourages the Single Burner Boilers committee to consider changes to chapter 5 to permitunattended operation of listed single burner boilers without a PHA on record. TheFundamentals committee also encourages the Single Burner Boilers committee to review thedefinition of unattended operation (3.3.164 in the 2011 edition).


I, Michael Polagye, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights incopyright in this Public Comment (including both the Proposed Change and the Statement of Problem and Substantiation). Iunderstand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this PublicComment in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Comment and that Ihave full power and authority to enter into this copyright assignment.

By checking this box I affirm that I am Michael Polagye, and I agree to be legally bound by the above Copyright Assignment andthe 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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