Second Revision No. 18-NFPA 11-2014 [ Section No. 2.2 ]ASTM C 582, Standard Specification for Contact-Molded Reinforced Thermosetting Plastic (RTP) Laminates for Corrosion-Resistant

Second Revision No. 18-NFPA 11-2014 [ Section No. 2.2 ]

2.2 NFPA Publications.

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NFPA 13, Standard for the Installation of Sprinkler Systems, 2013 edition.

NFPA 15, Standard for Water Spray Fixed Systems for Fire Protection, 2012 edition.

NFPA 16, Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems, 2015edition.

NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection, 2013 edition.

NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances, 2013edition.

NFPA 30, Flammable and Combustible Liquids Code, 2015 edition.

NFPA 70®, National Electrical Code®, 2014 edition.

NFPA 72®, National Fire Alarm and Signaling Code, 2013 edition.

NFPA 220, Standard on Types of Building Construction, 2015 edition.

NFPA 1150, Standard on Foam Chemicals for Fires in Class A Fuels, 2010 edition.

NFPA 1901, Standard for Automotive Fire Apparatus, 2009 edition.

NFPA 1961, Standard on Fire Hose, 2013 edition.

Submitter Information Verification

Submitter Full Name: Barry Chase

Organization: National Fire Protection Assoc

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Submittal Date: Fri Feb 07 18:27:34 EST 2014

Committee Statement

Committee Statement: New reference in 6.12.7.1

Response Message:

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

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Second Revision No. 19-NFPA 11-2014 [ Section No. 2.3.4 ]

2.3.4 ASTM Publications.

ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

ASTM A 53, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded andSeamless, 2012.

ASTM A 105, Standard Specification for Carbon Steel Forgings for Piping Applications, 2012.

ASTM A 106, Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service,2011.

ASTM A 135, Standard Specification for Electric Resistance-Welded Steel Pipe, 2009.

ASTM A 182, Standard Specification for Forged or Rolled Alloy- and Stainless Steel Pipe Flanges, ForgedFittings, and Valves and Parts for High-Temperature Service, 2012.

ASTM A 216, Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding forHigh-Temperature Service, 2012.

ASTM A 234, Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel forModerate and High-Temperature Service, 2011.

ASTM A 312, Standard Specification for Seamless-, Welded, and Heavily Cold Worked AusteniticStainless Steel Pipes, 2012.

ASTM A 395, Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use atElevated Temperatures, 1999.

ASTM A 795, Standard Specification for Black and Hot-Dipped-, Zinc-Coated-, (Galvanized) Welded andSeamless Steel Pipe for Fire Protection Use, 2008.

ASTM B 43, Standard Specification for Seamless Red Brass Pipe, Standard Sizes, 2009.

ASTM B 315, Standard Specification for Seamless Copper Alloy Pipe and Tube, 2012.

ASTM C 582, Standard Specification for Contact-Molded Reinforced Thermosetting Plastic (RTP)Laminates for Corrosion-Resistant Equipment , 2009.

ASTM D 323, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method) , 2008

ASTM D 1331, Standard Test Methods for Surface and Interfacial Tension of Solutions of Surface-ActiveAgents , 2011

ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials , 2013.

IEEE/ASTM SI 10, American National Standard for Metric Practice, 2010.




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Committee Statement

Committee Statement: New references in 5.4.2

Response Message:


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3.3.3* Discharge Device Devices .

A device Devices designed to discharge water or foam-water solution in a predetermined, fixed, oradjustable pattern. Examples include, but are not limited to, sprinklers, spray nozzles, and hose nozzles.

3.3.3.1 Air-Aspirating Discharge Devices.

Devices specially designed to aspirate and mix air into the foam solution to generate foam, followed byfoam discharge in a specific design pattern.

3.3.3.2 Compressed Air Foam Discharge Device Devices .

A device Devices specifically designed to discharge compressed air foam in a predetermined pattern.

3.3.3.3* Non-Air-Aspirating Discharge Devices.

Devices designed to provide a specific water discharge pattern.

Supplemental Information

File Name Description

SR1-A.3.3.3_ed.docx edited to match text heading.


Submitter Full Name: [ Not Specified ]

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Submittal Date: Wed Feb 05 08:48:10 EST 2014

Committee Statement

Committee Statement: The list of examples was moved to the annex, since it is not part of the definition.

Response Message:

Public Comment No. 4-NFPA 11-2013 [Section No. 3.3.3]


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A.3.3.3.1 Discharge Devices – General.

Examples include, but are not limited to, sprinklers, spray nozzles, and hose nozzles.

Second Revision No. 6-NFPA 11-2014 [ New Section after 3.3.7.2 ]

3.3.7 Film Formation.

A property of aqueous film-forming foams and film-forming fluoroproteins characterized by a positive(>0.0 dynes/cm) spreading coefficient when measured according to ASTM D 1331 using cyclohexaneas the hydrocarbon substrate and distilled water to make the foam solution.




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Committee Statement

CommitteeStatement:

One crucial aspect of performance for AFFF products is the idea of “film formation”, yet it is notdefined in the standard. Defining film formation will aide testing laboratories in identifying astandardized test method for determining this property.

ResponseMessage:


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Second Revision No. 7-NFPA 11-2014 [ Section No. 3.3.11.4 ]

3.3.12.4 Film-Forming Foam.

A concentrate that when mixed at its nominal use concentration will form an aqueous film on hydrocarbonfuels. The hydrocarbon fuel typically used as a minimum benchmark for film formation is cyclohexane.




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Committee Statement

CommitteeStatement:

The second sentence was deleted, as the term "Film Formation" is now definedseparately.

Response Message:


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3.3.18.1* Compressed Air Foam-Generating Method.

A method of generating compressed air foam recognized in this standard by using a mixing chamber tocombine air or nitrogen under pressure, water, and foam concentrate in the correct proportions. Theresulting compressed air foam flows through piping or hoses to the hazard being protected.



SR2-A_3_3_17_1_ed_qsl_-_SL_response.docx OK to use 'hoses' not 'hose' per SL




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Committee Statement

CommitteeStatement:

The second sentence is really explanation and not part of the definition. It was moved tothe annex.

Response Message:

Public Comment No. 6-NFPA 11-2013 [Section No. 3.3.17.1]


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A.3.3.17.1 Compressed Air Foam‐Generating Method. The resulting compressed air foam flows through piping or hoses to the hazard being protected.

Second Revision No. 8-NFPA 11-2014 [ New Section after 3.3.27.2 ]

3.3.28* Spreading Coefficient.

The measurement of a foam solution’s potential to spread spontaneously across a hydrocarbon surface.



SR8-A_3_3_28_equation_ed_qsl_-_SL_response.docx CX = 2 minus signs




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Committee Statement

Committee Statement: This definition is being added to clarify the new definition for Film Formation.

Response Message:


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A.3.3.28 Spreading Coefficient.

Spreading coefficient is given by the following equation:

S = Tc −– Ts −- Ti [A.3.3.28] Wherewhere: S = spreading coefficient in dynes/cm Tc = surface tension of cyclohexane in dynes/cm Ts = surface tension of the foam solution in dynes/cm Ti = the interfacial tension between the foam solution and the cyclohexane in dynes/cm


3.3.29.2* Pressure Proportioning Tank.

A foam concentrate tank with no bladder that uses waterflow through an orifice to displace the a foamconcentrate ,having a specific gravity of at least 1.15, in the tank with water to add foam concentratethrough an orifice into a water line at a specified rate. This device is only suitable for foams having aspecific gravity of at least 1.15.




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Committee Statement

CommitteeStatement:

The definition was revised to combine the two sentences into a single definition. This type ofproportioner, by definition, only works with foam concentrates having this specific gravity, so thespecification belongs in the definition, not as annex text.



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4.3.1.4

Acceptable ranges for the following physiochemical properties of the foam concentrate shall be publishedas part of the listing to determine compliance with 12.6.2:

(1) Density or specific gravity

(2) pH

(3) Refractive index

(4)



A.4.3.1.4_4_-SR.docx New annex material




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Committee Statement

CommitteeStatement:

The new annex text will provide clarification to the new requirement that has been proposedon the First Revision. See attachment.

ResponseMessage:

Public Comment No. 37-NFPA 11-2013 [New Section after A.4.3.1.2]

* Viscosity


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A.4.3.1.4(4) The method of measurement should be identified, including the device used and parameters such as temperature, spindle number, and spindle speed in revolutions per minute (e.g., Brookfield viscometer).


4.7.2.1

Foam solution pipe shall be made of one of the following materials:

(1) Galvanized steel

(2) Stainless steel

(3) Internal/external corrosion-resistant pipe in accordance with the foam manufacturer’s specification forcompatibility and acceptable to the authority having jurisdiction

(4) Unprotected carbon steel pipe, when pipe when filled with foam solution or water and the dischargedevices are closed to the atmosphere




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Submittal Date: Thu Feb 06 11:24:03 EST 2014

Committee Statement

CommitteeStatement:

This corrects the contradiction from the First Revision substantiation to address the resultingcorrosion and the condition when carbon steel pipe is permitted.

ResponseMessage:



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4.7.2.2

Pipe carrying foam concentrate shall not be galvanized.




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Committee Statement

CommitteeStatement:

This requirement is not appropriate for this section and is covered under as a requirement inFoam Concentrate piping in Section 4.7.1.3 as identified by Richard Coppola in First Revisionballot

ResponseMessage:



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4.7.2.4

Pipe with within the hazard area shall be able to withstand the anticipated exposure to fire.




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Committee Statement

Committee Statement: Editorial error.

Response Message:



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Second Revision No. 15-NFPA 11-2014 [ Section No. 4.7.3.1.1 ]

4.7.3.1.1

Foam concentrate piping shall use fittings made of the following materials, as appropriate to the foamconcentrate pipe material:

(1) Brass (red or naval)

(2) Bronze

(3) Stainless steel (304 or 316)

(4) Other material, in accordance with the foam concentrate manufacturer’s certification of compatibilityand , with approval from the AHJ , and as permitted by 4.7.3.1.2




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Committee Statement

CommitteeStatement:

Field experience has demonstrated that foam concentrate piping and fittings should not beconstructed with carbon steel or galvanized pipe. The committee recognizes that other materialsmay be appropriate, but it is not the intent of this allowance to permit carbon steel or galvanizedpipe.

ResponseMessage:

Public Comment No. 2-NFPA 11-2013 [Section No. 4.7.3.1.1]


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5.4.1

Requirements for tanks equipped with the following floating roof types shall not be covered in Section 5.4:

(1) Roofs made from floating diaphragms

(2) Roofs made from plastic blankets

(3) Roofs made with plastic or other flotation material, even if encapsulated in metal or fiberglass,except as permitted in 5.4.2

(4) Roofs that rely on flotation device closures that are easily submerged if damaged

(5) Pan roofs




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Committee Statement

Committee Statement: The section was revised to coordinate with the revision in 5.4.2.

Response Message:


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Second Revision No. 11-NFPA 11-2014 [ Section No. 5.4.2 [Excluding any Sub-Sections]

]

Seal area protection systems shall be permitted for the following types of roof construction:

(1) Steel double deck

(2) Steel pontoon

(3) Full liquid surface contact, metallic sandwich panel, conforming to Appendix H, “Internal FloatingRoofs,” requirements of API 650

(4)



SR11-A.5.4.2.docx New annex material




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Committee Statement

CommitteeStatement:

The committee believes that, with the design features required, a fire in a composite floating rooftank would be limited to the seal area only and that rim seal protection would be appropriate.Based on the detailed design information and test data presented to the committee, a full surfacefire is not a credible scenario.

ResponseMessage:

* Full liquid surface contact, composite sandwich roof/seal system, designed in accordance with theperformance criteria in Appendix H, “Internal Floating Roofs,” requirements of API 650 and thefollowing:

(a) Fiberglass components shall be made from high-grade vinyl ester resin with a corrosion-resistant bottom surface and be compatible with the stored product.

(b) Top layer shall provide flame spread properties in accordance with ASTM E 84 flame spreadClass A rating.

(c) The structural laminate of the composite sandwich structure shall be in accordance with ASTMC 582.

(d) Core material shall be of a closed-cell structure for inherent redundant buoyancy and shall bechemically compatible with the stored product.

(e) The roof surfaces shall be a seamless, one-piece construction that utilizes chemical bonds tojoin all components.

(f) The perimeter seal system shall be gas-tight and utilize noncombustible material to cover therim space.


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A.5.4.2(4) Important fire‐resistive properties of these roof/seal systems include:

1. Conductive top and bottom surfaces to prevent the buildup of static charge.

2. Flamespread Class A rating of the top laminate

3. Buoyancy in accordance with API 650, Appendix H

4. Non‐combustible material covering the vapor space will limit the spread of a potential rim‐seal fire

5. Seamless construction with chemical bonds will ensure the roof system maintains its integrity in an explosion, preventing a full‐surface fire


6.12.7.1*

Recommended times to achieve submergence volume for various types of hazards and buildingconstruction shall be as shown in Table 6.12.7.1 and in accordance with NFPA 220 , Table 4.1.1 .

Table 6.12.7.1 Maximum Submergence Time for High-Expansion Foam Measured from Start of FoamDischarge in Minutes Maximum Submergence Time for High-Expansion Foam Measured from Start ofFoam Discharge in Minutes

Construction Type

Light or Unprotected Steel

Construction Type II (000),Type III (200), Type V (000)

Heavy or Protected orFire-Resistive

Construction Type I (all), Type II(222, 111) Type IV (2HH), Type V

(111)

Hazard SprinkleredNot

Sprinklered Sprinklered Not Sprinklered

Flammable liquids [flash pointsbelow 38°C (100°F)] having avapor pressure not exceeding276 kPa (40 psia)

3 2 5 3

Combustible liquids [flash pointsof 38°C (100°F) and above]*

4 3 5 3

Low-density combustibles (i.e.,foam rubber, foam plastics,rolled tissue, or crepe paper)

4 3† 6 4†

High-density combustibles (i.e.,rolled paper kraft or coatedbanded)

7 5† 8 6†

High-density combustibles (i.e.,rolled paper kraft or coatedunbanded)

5 4† 6 5†

Rubber tires 7 5† 8 6†

Combustibles in cartons, bags,or fiber drums

7 5† 8 6†

*Polar solvents are not included in this table. Flammable liquids having boiling points less lower than 38°C(100°F) might require higher application rates. See NFPA 30.

†These submergence times might not be directly applicable to storage piled above 4.6 m (15 ft) or wherefire spread through combustible contents is very rapid.



SR16-Table_6.12.7.1_ed.pdf CX OK'd by SL




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Committee Statement

CommitteeStatement:

The construction terminology used in the table headings was revised to be consistent withNFPA 220.

Response Message:


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Second Revision No. 9-NFPA 11-2014 [ New Section after 12.6.2 ]

12.6.3

When the foam type and brand of foam are known, the quality testing shall confirm the product meetsthe manufacturer’s specifications.




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Committee Statement

CommitteeStatement:

As the use of new products becomes more prevalent, new methods for measuring quality willneed to be identified and utilized. This will open the door for that dialogue between manufacturersand testing laboratories.

ResponseMessage:


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Second Revision No. 17-NFPA 11-2014 [ Section No. D.5.2.2 ]


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D.5.2.2 Surrogate Liquid Test Method.


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In this approach, surrogate test liquids are formulated specifically to simulate the flow behavior (viscositycharacteristics) and approximate conductivity or refractive index of the foam concentrate used in thesystem. An example of a graph generated from the recorded data is shown in Figure D.5.2.2(a) .

Figure D.5.2.2(a) Plot of Real-Time Test Data Gathered from Surrogate Liquid Injection Rate Test.

For initial system commissioning, the surrogate liquid can be placed directly in the foam system tank forinjection rate tests and then flushed out before filling the tank with foam concentrate. After the system hasbeen filled with foam concentrate it can still be tested using a surrogate test liquid, but installation of someadditional connections on the proportioning system piping are required. These additional connectionsenable the surrogate test liquid to be injected into the proportioning system in place of the foamconcentrate already in the foam storage tank. Since there are many types of proportioning systems, thetest set-up arrangement varies according to the system type.

Figure D.5.2.2(b) through Figure D.5.2.2(d) are illustrations of surrogate liquid test set-up arrangementsfor types of the most commonly used proportioning systems.

Figure D.5.2.2(b) Bladder Tank Proportioning System (Containing Foam) Setup for SurrogateLiquid Type Test.


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Figure D.5.2.2(c) In-Line Balanced Pressure (Pump Type) System Using Surrogate Liquid Method.

Figure D.5.2.2(d) Balanced Pressure Pump System Using Surrogate Liquid Method.


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G11-108.jpg revised Fig D.5.2.2(a)




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Committee Statement

CommitteeStatement:

The text in the header of Figure D.5.2.2(a) references a specific commercial test. Thereference should be deleted to leave just "Flow vs. Injection Rate".

ResponseMessage:

Public Comment No. 35-NFPA 11-2013 [Section No. D.5.2.2]


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Documents

Second Revision No. 18-NFPA 11-2014 [ Section No. 2.2 ]ASTM C 582, Standard Specification for Contact-Molded Reinforced Thermosetting Plastic (RTP) Laminates for Corrosion-Resistant