96 a2013 rop ballot - nfpa · ansi/ul 300,, 2005, revised 2010. ul 710, , 1995, revised2007, 2010....

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

M E M O R A N D U M

TO: NFPA Technical Committee on Venting Systems for Cooking Appliances

FROM: Elena Carroll, Administrator, Technical Projects DATE: February 22, 2012 SUBJECT: NFPA 96 ROP TC Letter Ballot (A2013)

____________________________________________________________ The ROP letter ballot for NFPA 96 is attached. The ballot is for formally voting on whether or not you concur with the committee’s actions on the proposals. Reasons must accompany all negative and abstention ballots. Please do not vote negatively because of editorial errors. However, please bring such errors to my attention for action. Please complete and return your ballot as soon as possible but no later than March 13, 2012. As noted on the ballot form, please return the ballot to Elena Carroll either via e-mail to [email protected] or via fax to 617-984-7110. You may also mail your ballot to the attention of Elena Carroll at NFPA, 1 Batterymarch Park, Quincy, MA 02169. The return of ballots is required by the Regulations Governing Committee Projects. Attachments: Proposals Letter Ballot

Report on Proposals – June 2013 NFPA 96_______________________________________________________________________________________________96-1 Log #2

_______________________________________________________________________________________________Don Dawkins, DAWCO Fire & Safety Inc.

New text to read as follows:Manufacturers of Fire Hood and Ventilation Equipment Shall make available to State Fire Marshal Offices Product

Installation and Service Manuals and provide timely Product Safety Bulletins for Dissemination to all Authorized andLicensed Fire Equipment Service Companies for all Fire Equipment Products Manufactured, Listed and Sold for Profit inthose States. Also, a label shall be visibly affixed to each hood stating its UL Listing and whether or not Duct andPlenum areas require protection by A listed fire suppression system. If the hood is of the water wash down type,installation manuals shall require the installation of stainless steel pipe.

This would greatly improve the level of professionalism, Training and Quality of Service Inspectionsconducted by Authorized, Licensed and Permitted Fire Equipment Service Personnel. Currently, there are manyoversights or mistakes routinely being made and identification of Service Companies or their Employees performing atSubstandard levels is difficult to distinguish. By adding this requirement to all Standards would ensure the availability ofproper training and flow of information. Non-Compliant issues could be readily identified and corrected. Fire EquipmentService Companies and/or their Service Employees which perform at substandard levels could be readily identified. Thepurpose for these Standards is to ensure Minimum Requirements. This amendment would accomplish the best of whatis achievable when it comes to protecting overall Public Safety and Property. It is time to reduce the politics and truly putPublic Safety where it belongs – First.

Note: Supporting material is available for review at NFPA Headquarters.

Manuals are easily available to AHJs without such a requirement. A manufacturer will notalways know when product or plenum protection is applicable. There is no justification for requiring only stainless steelwithin the hood. The term "those states" is not inclusive to all of the places the document can be applied.

_______________________________________________________________________________________________96-2 Log #CP1

_______________________________________________________________________________________________Technical Committee on Venting Systems for Cooking Appliances,

Review entire document to: 1) Update any extracted material by preparing separate proposals todo so, and 2) review and update references to other organizations documents, by preparing proposal(s) as required.

To conform to the NFPA Regulations Governing Committee Projects.

1Printed on 2/22/2012


_______________________________________________________________________________________________Marcelo M. Hirschler, GBH International

Revise text to read as follows:ASTM International, 100 Barr Harbor Drive, P.O. Box C700,West Conshohocken, PA

19428-2959.ASTM E 84, , 2011a 2004.ASTM E 814, , 2011a 2006.ASTM E 2336, , 2004(2009).

ASTM International, 100 Barr HarborDrive, P.O. Box C700,West Conshohocken, PA 19428-2959.ASTM E 136, , 2011 1993.

Standards update.

Revise text to read as follows:ASTM International, 100 Barr Harbor Drive, P.O. Box C700,West Conshohocken, PA

19428-2959.ASTM E 84, , 2012 2004.ASTM E 814, , 2011a 2006.ASTM E 2336, , 2004 Re-approval (2009).

ASTM International, 100 Barr HarborDrive, P.O. Box C700,West Conshohocken, PA 19428-2959.ASTM E 136, , 2011 1993.

An update was made to the most recent editions of the publications.



_______________________________________________________________________________________________John F. Bender, Underwriters Laboratories Inc.

Revise text as follows:Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

ANSI/UL 197, , 2003, revised 2006 2010, Revised 2011.ANSI/UL 300,

, 2005, Revised 2010.UL 710, , 1995, revised 2007, 2010.ANSI/UL 710B, , 2004, revised 2009, 2010.UL 710C,

, 2006.ANSI/UL 723, , 2008, Revised 2010.ANSI/UL 1046, , 2000 2010.ANSI/UL 1479, , 2003, revised 2008 2010.ANSI/UL 1978, , 2005, revised 2009 2010.UL 2221, , 2001 2010.

Add ANSI approval designation to ANSI/UL 1046, update title of UL 701C, and update referencedstandards to most recent edition.

Revise text to read as follows:Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

ANSI/UL 197, , 2003, revised 2006 2010, Revised 2011.ANSI/UL 300,

, 2005, Revised 2010.UL 710, , 1995, revised 2007, 2010.ANSI/UL 710B, , 2004, revised 2009, 2010. 2011UL 710C,

, 2006.ANSI/UL 723, , 2008, Revised 2010.ANSI/UL 1046, , 2000 2010, revised 2012.ANSI/UL 1479, , 2003, revised 2008 2010.ANSI/UL 1978, , 2005, revised 2009 2010.UL 2221, , 2001 2010.

A correction was made to the the dates of the most recent revisions.

_______________________________________________________________________________________________96-5 Log #70

_______________________________________________________________________________________________J. Craig Voelkert, Amerex Corporation

Add new text to read as follows:UL 762, Power Roof Ventilators for Restaurant Exhaust Appliances

Needed reference to the UL standard.

Add new text to read as follows:UL 762, Outline of Investigation for Power Roof Ventilators for Restaurant Exhaust Appliances, 2010

The title has been corrected and the publication year added.



_______________________________________________________________________________________________Norbert W. Makowka, National Association of Fire Equipment Distributors

Add new text to read as follows:A situation, condition or failure within a system or system component that makes the system

non-complaint with this standard or the manufacturers listed maintenance and installation manual.Add definition of term Deficiency as used in proposal for Section 11.2

Move existing 3.17 down and renumber subsequent sections.

The word deficiency is not used within the body of the Standard. Therefore, there is no need toinclude a definition.

_______________________________________________________________________________________________96-7 Log #41

_______________________________________________________________________________________________Mark T. Conroy, Brooks Equipment Company

Move 3.3.18 to the annex to read as follows:Depression A.7.1.4 Dips are depressions or cuplike places in horizontal duct runs in which liquids could

accumulate.

The term “dips” appears only once in the standard (paragraph 7.1.4). Most people would not think tolook in the definitions section for an explanation of this term. Moving the explanation to the annex with an asterisk in thebody (paragraph 7.1.4) makes sense for most users of the standard.

Delete 3.3.18.The term "dips" has been removed within the Standard and there is no reason to continue

defining it.

_______________________________________________________________________________________________96-8 Log #31

_______________________________________________________________________________________________Jayendra S. Parikh, Compliance Solutions International Inc.

Include a definition for Primary Filter to read:Primary Filter. A filter that provides a flame barrier, is listed in accordance with UL 1046, and is installed in the aperture

of an exhaust hood.Primary filter is mentioned in paragraph 6.1.3, however, it is not defined in this document. Various

types of grease filters and grease removal devices are used in the exhaust hoods and in the devices, equipment, andsystems used in commercial cooking operations. Some of these filters are referred to as the primary filter and thesecondary filter. These filters/terms need to be defined in this document. This proposal and another proposal for a newparagraph 3.3.25.4 for the secondary filter address this need.

The proposed definition is not needed and would potentially add confusion on the issue.




Include a definition for Secondary Filter to read:Secondary Filter. A filter that is not a primary filter, is used in conjunction with or in addition to a primary filter either on

the upstream or downstream of the primary filter, in an exhaust hood or in the devices, equipment, and systems used inthe commercial cooking operations.

Grease filters that are not primary filters (as defined in the proposal for a new paragraph 3.3.25.3),such as mesh and other filters, are used in the exhaust hoods, air pollution control devices, and recirculating systems,and are referred to as the secondary filters. The primary purpose of using such grease filters is to remove additionalgrease particulates that are not removed by the conventional baffle grease filters typically used in the hoods and otherdevices, equipment, and systems used in the commercial cooking operations. This definition is needed to differentiatebetween the secondary and primary filter, which is referred to in paragraph 6.1.3.

The term "secondary filter" is not used within the Standard.

_______________________________________________________________________________________________96-10 Log #22


Revise definition to read as follows:The time, in minutes or hours, that materials or assemblies have withstood a fire

exposure as determined by the tests, or methods based on tests, prescribed by this standard. established in accordancewith the test procedures of NFPA 251. [ 2009]

NFPA 251 has been withdrawn. NFPA 150 took the definition from NFPA 220, who took an olddefinition from NFPA 5000. The present definition in NFPA 500 reads as follows, and the proposal is consistent withthat (simply changing code to standard):

The time, in minutes or hours, that materials or assemblies have withstood a fire exposure asdetermined by the tests, or methods based on tests, prescribed by this code.

Revise the proposed definition to read as follows:The time, in minutes or hours, that materials or assemblies have withstood a fire

exposure as established in accordance with the test procedures of ASTM E119 or UL 263.NFPA 251 has been withdrawn in favor of these two other testing standards, so they should be

referenced. These other two methods are not specifically identified elsewhere within NFPA 96.




Revise text to read as follows:

Any material that will burn regardless of its autoignition temperature.(See 4.8.2) Refers to a building construction material not complying with the

definition of noncombustible material that, in the form in which it is used, has a potential heat value not exceeding 3500Btu/lb (8141 kJ/kg), where tested in accordance with NFPA 259,

, and includes either of the following: (1) materials having a structural base of noncombustible material, with asurfacing not exceeding a thickness of 1/8 in. (3.2 mm) that has a flame spread index not greater than 50; and (2)materials, in the form and thickness used, having neither a flame spread index greater than 25 nor evidence ofcontinued progressive combustion, and of such composition that surfaces that would be exposed by cutting through thematerial on any plane would have neither a flame spread index greater than 25 nor evidence of continued progressivecombustion, when tested in accordance with ASTM E 84,

; or UL 723, . [ 2009](See 4.8.1) A substance that will not ignite and burn when subjected to a fire.

Materials subject to increase in combustibility or flame spread index beyond the limits hereinestablished through the effects of age, moisture, or other atmospheric condition should be considered combustible. SeeTable A.3.3.38.

For further information, see NFPA 259,.

Materials that are reported as passing ASTM E 136 should be considerednoncombustible materials.

A material that complies with any of the following shall be considered a noncombustible material:(1)* A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, supportcombustion, or release flammable vapors, when subjected to fire or heat(2) A material that is reported as passing ASTM E 136,

(3) A material that is reported as complying with the pass/ fail criteria of ASTM E 136 when tested in accordance withthe test method and procedure in ASTM E 2652,

. [ 7.1.4.1.1]Where the term limited-combustible is used in this Code, it shall also include the term noncombustible.

[ 7.1.4.1.2]The provisions of 4.8.1.1 do not require inherently noncombustible materials to be tested in order to be

classified as noncombustible materials. [ A.7.1.4.1]Examples of such materials include steel, concrete, masonry and glass. [ A.7.1.4.1.1(1)]

A material shall be considered a limited combustible material where all theconditions of 4.8.2.1 and 4.8.2.2, and the conditions of either 4.8.2.3 or 4.8.2.4 are met. [ 7.1.4.2]

The material does not comply with the requirements for a noncombustible material, in accordance with 4.8.1.1.[ 7.1.4.2.1]

The material, in the form in which it is used, exhibits a potential heat value not exceeding 3500 Btu/lb (8141kJ/kg), when tested in accordance with NFPA 259, .[ 7.1.4.2.2]

The material has a structural base of a noncombustible material with a surfacing not exceeding a thickness of1/8 in. (3.2 mm) where the surfacing exhibits a flame spread index not greater than 50 when tested in accordance withASTM E 84, or ANSI/UL 723,

. [ 7.1.4.2.3]The material is composed of materials which, in the form and thickness used, neither exhibit a flame spread

index greater than 25 nor evidence of continued progressive combustion when tested in accordance with ASTM E 84 orANSI/UL 723, and are of such composition that all surfaces that would be exposed by cutting through the material onany plane would neither exhibit a flame spread index greater than 25 nor exhibit evidence of continued progressive


Report on Proposals – June 2013 NFPA 96combustion when tested in accordance with ASTM E 84 or ANSI/UL 723. [ 7.1.4.2.4]

Where the term limited-combustible is used in this Code, it shall also include the term noncombustible.[ 7.1.4.2.5]

NFPA 101 and 5000 have been revised so that the definitions of noncombustible material and oflimited combustible material have been eliminated and replaced by sections in the code or standard that will now be theplace that contains requirements for the use of the concepts. Definitions are not enforceable in NFPA documents andshould not contain requirements.

The choice of the sections in chapter 4 where references to limited combustible material and noncombustible materialare placed was based on where these terms are used.

The proposed language is much more complex than is necessary within NFPA 96. Thelanguage found in NFPA 96 should be simple enough to follow in the field. Committee Proposal 96- (Log #CP3) looks toaddress this issue.

_______________________________________________________________________________________________96-12 Log #CP3


Remove the parenthetical reference to NFPA 5000 in 3.3.38.2. Keep the definition the same asshown:

Refers to a building construction material not complying with the definition ofnoncombustible material that, in the form in which it is used, has a potential heat value not exceeding 3500 Btu/lb (8141kJ/kg), where tested in accordance with NFPA 259, Standard Test Method for Potential Heat of Building Materials, andincludes either of the following: (1) materials having a structural base of noncombustible material, with a surfacing notexceeding a thickness of 1/8 in. (3.2 mm) that has a flame spread index not greater than 50; and (2) materials, in theform and thickness used, having neither a flame spread index greater than 25 nor evidence of continued progressivecombustion, and of such composition that surfaces that would be exposed by cutting through the material on any planewould have neither a flame spread index greater than 25 nor evidence of continued progressive combustion, whentested in accordance with ASTM E 84, Standard Test Method of Surface Burning Characteristics of Building Materials;or UL 723, Standard for Test of Surface Burning Characteristics of Building Materials. [5000, 2009]Revise A.3.3.38 to read as follows:A.3.3.38 Material. For detailed criteria on noncombustible and limited combustible material, see NFPA 5000. See TableA.3.3.38 for types of construction assemblies containing noncombustible, limited-combustible, and combustiblematerials.Delete A.3.3.38.3 as shown:

Materials that are reported as passing ASTM E 136 should be considerednoncombustible materials.

The way materials are now addressed in NFPA 5000 is not suitable for use in NFPA 96. This has beenaddressed by keeping the previous definitions that were located in NFPA 96. Additional Annex material was provided toreference the user to NFPA 5000 for more detailed material requirements.




Revise this definition to read:A competent and capable person or company that has met the requirements and training for a given field acceptable to

the AHJ.The term ”or company” should be deleted, since: (1) a person meets the requirements and training for

a given field, not a company, (2) the definition of “Trained” (in paragraph 3.3.51) mentions a “person” and not a“company”, and (3) the requirements for inspection of an exhaust system for grease buildup (in paragraph 11.4),cleaning of exhaust system (in paragraph 11.6.1), and inspection, testing, and maintenance of fire-extinguishingsystems (in paragraph 11.2.1) mention qualified “person(s)” and not a “company”.

_______________________________________________________________________________________________96-14 Log #71


Add new text to read as follows:(7) High limit switch on deep fat fryers

The number of fires reported by the USFA and NFPA in deep fat fryers indicates that the high limitswitch is not being serviced and maintained. Highlighting it here will focus the need for service on this criticalcomponent.

NFPA data from the 2003 report: “Eating and Drinking Establishment Fire Data” shows 1,300 fryer fires in the U.S.

The high limit switch is adequately addressed by (1), "cooking equipment."



_______________________________________________________________________________________________Tony Crimi, A.C. Consulting Solutions, Inc.

Revise text to read as follows:

Where a clearance reduction system consisting of 0.33 mm (0.013 in.) (28 gauge) sheet metal spaced out 25mm (1 in.) on noncombustible spacers is provided, there shall be a minimum of 229 mm (9 in.) clearance to combustiblematerial.

Where a clearance reduction system consisting of a and field-applied grease duct enclosurematerial, system, product or method of construction specifically evaluated for such purpose in accordance with ASTM E2336, the required shall be in accordance with the listing. Where a clearance reduction system consisting of0.69 mm (0.027 in.) (22 gauge) sheet metal on 25 mm (1 in.) mineral wool batts or ceramic fiber blanket reinforced withwire mesh or equivalent spaced 25 mm (1 in.) on noncombustible spacers is provided, there shall be a minimum of 76mm (3 in.) clearance to combustible material.

Zero clearance to limited-combustible materials shall be permitted where protected by metal lath and plaster,ceramic tile, quarry tile, other noncombustible materials or assembly of noncombustible materials, or materials andproducts that are listed for the purpose of reducing clearance.

: The generic language describing clearance reduction systems incorporating mineral wool orceramic fiber insulation are outdated. The purpose of the proposed code is to improve the Standard by adding analternate tested exception to the grease duct clearance requirements in 4.2.3.2.

There continues to be confusion in the application of NFPA 96 requirements by manufacturers, designersand code users regarding the requirements relating to clearances versus the requirements regarding grease ductenclosure materials. Part of this confusion has been the fact that the grease duct clearance requirements are located in4.2, whereas the grease duct enclosure provisions, which also talk about clearances from the duct to the interiorsurfaces of enclosures of combustible or non-combustible construction, are located in 4.3 and 7.7. This proposal seeksto clarify that Listed and Labeled systems (permitted by 4.3), which are also tested and approved for their clearance tocombustibles, can be installed in accordance with their Listings.

All manufacturers of field-applied grease duct enclosure systems have as part of their listings for each systems, anallowable for clearance from the outside of the enclosure system to adjacent combustibles. They achieve this based onthe type, quantity, and method of installation of the protective enclosure materials, and test them in accordance with theASTM E2336 Standard recognized in 4.3.1.2. In fact, ASTM E2336 is designed to evaluate for zero clearance. Mostfield-applied grease duct enclosure system manufacturers have listings for Zero Clearance.

The materials are routinely used as an option for reducing clearances, particularly in cases where there is a limitedamount of space available for other means of protection. Another typical use is in a 1 story restaurant where no ratedwall/ceiling is being penetrated, but field-applied protection is installed because of the proximity of the grease duct toadjacent combustible construction.

Keep Section 4.2.3.2 the same as shown.4.2.3.2 Where a clearance reduction system consisting of 0.69 mm (0.027 in.) (22 gauge) sheet metal on 25 mm (1 in.)

mineral wool batts or ceramic fiber blanket reinforced with wire mesh or equivalent spaced 25 mm (1 in.) onnoncombustible spacers is provided, there shall be a minimum of 76 mm (3 in.) clearance to combustible material.Add a new Section 4.2.3.3 and renumber the subsequent sections.

Where a clearance reduction system consisting of a and field-applied grease duct enclosurematerial, system, product or method of construction specifically evaluated for such purpose in accordance with ASTM E2336, the required shall be in accordance with the listing.

The proposed language is a useful addition, but the method previously in NFPA 96 is stillwidely used and should remain.



_______________________________________________________________________________________________Jon Nisja, Northcentral Regional Fire Code Development Committee

Revise text to read as follows:Zero clearance to limited-combustible materials shall be permitted where protected by metal lath and plaster, ceramic

tile, quarry tile, other noncombustible materials or assembly of noncombustible materials,. or such materials andproducts that are shall be listed for the purpose of reducing clearance.

We are not aware of testing or data showing that simple items such as ceramic tile or plaster providesadequate protection for hoods and exhaust systems. Items used to reduce clearances to limited combustible materialsshould be listed for such application.

There is no need to require all of the materials in 4.2.3.3 to be specifically listed for reducingclearance.

_______________________________________________________________________________________________96-17 Log #10

_______________________________________________________________________________________________R. T. Leicht, Delaware State Fire Marshal’s Office

Revise text to read as follows:4.2.3.3 Zero clearance to limited-combustible materials shall be permitted where protected by metal lath and plaster,

ceramic tile, quarry tile, other noncombustible materials or assembly of noncombustible materials, or materials andproducts that are listed for the purpose of reducing clearance one of the following:

4.2.3.3.1 metal lath and plaster4.2.3.3.2 ceramic tile4.2.3.3.3 quarry tile4.2.3.3.4 other noncombustible materials or assembly of noncombustible materials that are listed for the purpose of

reducing clearance4.2.3.3.5 other materials and products that are listed for the purpose of reducing clearance

As currently written, the paragraph has been misinterpreted at times as though the phrase "listed forthe purpose of reducing clearance" only referred to materials and products. In actuality "noncombustible materials orassemblies of noncombustible materials" were not intended to be used to reduce clearances unless they too were solisted. A sheet of lightweight steel, although noncombustible, may not adequately protect a combustible wall when thesteel is adhered directly onto it.

_______________________________________________________________________________________________96-18 Log #9

_______________________________________________________________________________________________Paul A. Dvorak, Egan Company

Revise text to read as follows:Rule: A minimum of 1/4 in. standing weld flange connection shall be used for the field connection of both transitional and

straight grease duct fittings.This rule implies field grease duct fittings but is not clear. Our duct manufacturing shop has certified

welders that have, in the past, used butt welded joints to join lengths of sheet metal together in the shop to reduce fieldwelding costs. Recently the shop had to change the practice of factory butt welds to telescoping, bell duct, or flangedjoints due to the interpretation of this Section by Officials Having Jurisdiction. As a result, our shop costs have increasedby nearly 50% to join sections of sheet metal. We believe the intent of this section is for field joints.

The language applies to both field and factory connections and is made clear by figures 7.5.5.1(a)-(d)



_______________________________________________________________________________________________Paul A. Dvorak, Egan Company

Revise text to read as follows:Rule: Butt weld connections shall not be permitted for field duct to duct connections.

Our duct manufacturing shop has certified welders that have, in the past, used butt welded joints tojoin straight lengths of sheet metal together in the shop to reduce field welding costs. Recently the shop had to changethe practice of factory butt welds to telescoping, bell duct, or flanged joints due to the interpretation of this Section byOfficials Having Jurisdiction. As a result, our shop costs have increased by nearly 50% to join sections of sheet metal.We believe the intent of this section is for field joints.

The committee has reaffirmed over the years that butt-weld duct-to-duct connections are notsufficient whether done in the field or the factory.

_______________________________________________________________________________________________96-20 Log #72


Add new text to read as follows:The duct connecting the oven flue(s) to the hood canopy shall have its outlet meet the requirements of 6.2.1.

Make a correction to Figure 5.1.8.1 to show separation of flue gas outlet and grease filters per 6.2.1.The added language would make clear the need to separate very high temperature flue gases from

grease removal devices.Figure 5.1.8.1 should show the separation or the use of a baffle plate.

The recommendation references the wrong section and the submitter's intent is difficult tointerpret. A figure should be provided by the submitter, as is proposed, to help clarify the requirement.

_______________________________________________________________________________________________96-21 Log #18


Revise text as follows:Ultraviolet hoods shall be tested and listed in accordance with UL 710 and ANSI/UL 710C.

Add ANSI approval designation to ANSI/UL 710C.

UL 710C does not have ANSI designation at this point.




Revise this requirement to read:Listed grease filters, listed baffles, or other listed grease removal devices intended for use with commercial cooking

equipment operations shall be provided.Since the baffles (typically used in the exhaust hoods such as water-wash hoods) are not listed, the

term “listed baffles” should be deleted. The grease filters or grease removal devices are not used with commercialcooking equipment, but with or in the commercial cooking operations in the exhaust hoods, other devices, and systems.I believe this was the intent of this requirement, and the proposed change would clarify it.

_______________________________________________________________________________________________96-23 Log #15


Revise text as follows:Listed grease filters and grease removal devices that are removable but not an integral component of a specific

listed exhaust hood shall be listed in accordance with ANSI/UL 1046.

Add ANSI approval designation to ANSI/UL 1046.

_______________________________________________________________________________________________96-24 Log #16


Revise text as follows:Mesh filters shall not be used unless evaluated as an integral part of a listed exhaust hood or listed in

conjunction with a primary filter in accordance with ANSI/UL 1046.

Add ANSI approval designation to ANSI/UL 1046.

_______________________________________________________________________________________________96-25 Log #59

_______________________________________________________________________________________________W. Nelson Dilg, Nelbud Services Group

Add a new text to read as follows:Mesh Filters shall not be used as the primary grease removal device whether listed or not.

When used as primary grease removal devices, mesh filters add system resistance with face loading.In retrofit applications, the added resistance negatively affects fan performance, resulting in loss of ability to providecapture and containment of effluent, and upsetting the original (engineered) kitchen air balance. Mesh filters operate onthe impaction principle of operation, and as such, the primary grease removal devices cannot drain; this increases thefire hazard and can contribute to flame spread into the plenum and duct in an appliance fire condition.

The proposed language is contradictory to the current Section 6.1.3.



_______________________________________________________________________________________________Edward Przystas, Hoodpro’s Inc.

I have been in the grease exhaust system cleaning business in Massachusetts for 22 years. Thisyear the MA Dept of fire Services mandated that hood cleaners be licensed by the state. This licensing brought on moreopen lines of communication between hood cleaners and the Fire Marshals than ever before. We came upon an issuewhich it was recommended by the Fire Marshals, that it be brought to the NFPA's attention.

Regarding filters. It seems that most hood cleaners on various forums are in agreement that aluminum baffle filters donot meet the codes. They only meet one, they are UL listed. UL standards require that the filter by able to condenseairborne grease and run it off. No testing for strength or resistance to a fire! As for being made of an equivalent materialto steel, no. As to holding up to the rough treatment common in the industry. No.

Additionally each time we clean the filter they degrade, actually very quickly. If the restaurant runs them thru thedishwasher where the chemical strength is very high they fall apart even quicker. With the combination of being a weakmetal at the start and constant degradation from cleaning they become much too thin to offer much resistance to a fire.In conjunction the filter is usually held together with aluminum rivets which are weakened even more quickly than thefilter itself.

After doing some research I found that filter companies will offer the fact that galvanized filters can stand up to 450degrees and stainless steel 900. Aluminum...not a word. The temperature at which aluminum breaks down inconspicuously omitted. Everywhere, not a word. Could it be the temperature is lower than the average fire? Imaginethe reduction in effectiveness after several cleanings. Baffles much thinner than when they were initially purchased.

Another concern I thought you might consider is, say a fire breaks out in a hood. All the personnel evacuate and thefiremen come in. The aluminum filters, when they break down and burn emit toxic fumes that can kill. The only peopleexposed to these fumes will be the firefighters. Not a good thing. Their job is dangerous enough without this oversight.

Hopefully you will take this into consideration during the next NFPA 96 codes meeting.

No specific recommendation is included in this proposal. Listed aluminum grease filters aresubject to the flame resistance test of UL 1046.

_______________________________________________________________________________________________96-27 Log #35


Revise this requirement to read:Grease filters shall be listed and constructed of steel or listed equivalent other non-combustible material.

The grease filter material is not listed as specified in this requirement. The material equivalent to steelfor the grease filter construction that this requirement specifies is a non-combustible material as required in paragraph6.2 in UL 1046. The proposed changes make the necessary correction and clarify this requirement.

Delete all of Section 6.2.3.1.This requirement is already addressed by Section 6.1.1 and 6.1.2.




Revise this requirement to read:Grease filters shall be of rigid construction that will not distort or crush under normal operation, handling, and cleaning,

conditions or replacement.Some grease filters available today are not to be cleaned, but are to be disposed of when loaded with

grease, and replaced with new filters. The proposed change addresses such filters.

The term "handling" already included in this Section adequately covers replacement.

_______________________________________________________________________________________________96-29 Log #37


Revise this requirement to read:Grease filters shall be easily accessible and removable for cleaning or replacement.

Some grease filters available today are not to be cleaned, but are to be disposed of when loaded withgrease, and replaced with new filters. The proposed change addresses such filters.

Revise this requirement to read:6.2.3.4 Grease filters shall be easily accessible for removal.

This change clarifies the requirement that all grease filters need to be accessible for removal nomatter what the reason.

_______________________________________________________________________________________________96-30 Log #53

_______________________________________________________________________________________________Bernard P. Besal, Besal Services, Inc.

Modify 7.1.4 as follows:All ducts shall be installed without forming dips or traps that might collect residues. unless provided with access in

accordance with 7.4.1 and drains at the lowest points to support exhaust duct cleaning processes.Under existing wording, pitching and rolling of long horizontal ducts is not allowed. The modification

accommodates the required sloping of exhaust ductwork that is specified in many building codes. Sloped duct simplifiesthe cleaning process as drainage of wash water is accounted for during the process and in most cases reduces cost dueto labor reduction.

Modify 7.1.4 as follows:7.1.4 All ducts shall be installed without forming dips or traps areas that might collect residues. unless provided with

access in accordance with 7.4.1 and drains at the lowest points.The word "areas" is a better description of these locations than "dips or traps".

The end of the proposed language was deleted as it was not necessary text for the requirement.




Add a new 7.3.8 as follows:7.3.8 Wall mounted exhaust fans shall have access for cleaning and inspection within 0.92 m (3 ft) of the exhaust fan.

Lack of access is commonly encountered with the rear of the blower wheels and the inlets on wallmounted fans.

Wall mounted fans incorporate a round base and cannot be hinged to access the inlet area.

_______________________________________________________________________________________________96-32 Log #55


Add a new 7.3.9 that states:7.3.9 Listed grease duct drains shall be installed in accordance with the terms of the listing and manufacturer's

instructions.Listed grease duct drain assemblies are available and allow for drains to be retrofitted onto existing

grease ducts.

Add a new 7.1.4.3 that states:7.1.4.3 Where provided, drains shall be one of the following:A) Continuously welded to the exhaust ductB )Listed grease duct drains installed in accordance with the terms of the listing and manufacturer's installation manual.

The language was revised so as not to require the installation of drains, but to rather apply tosituations where they are provided. A provision was included to allow for drains to be welded.

_______________________________________________________________________________________________96-33 Log #CP5


Insert new 7.5.2.1.1 and renumber existing sections as appropriate.7.5.2.1.1 Factory-built grease ducts listed in accordance with ANSI/UL 1978 shall be permitted to incorporatenon-welded joint construction in accordance with their listings.

This has been added to clarify that the joints on listed factory built grease ducts do not need continuousexternal welds.


Report on Proposals – June 2013 NFPA 96_______________________________________________________________________________________________96-34 Log #CP4


Add a new Section 7.5.2.1.2 to read as follows:7.5.2.1.2* Prior to the use of or concealment of any portion of a grease duct system, a leakage test shall be performedto determine that all welded joints and seams are liquid tight.A.7.5.2.1.2 The leakage test should consist of a light test, water pressure test, or an approved equivalent test. Thepermit holder should be responsible for providing the necessary equipment and for performing the test. Refer toASHRAE 154-2011, Ventilation for Commercial Cooking Operations, for specific information on such tests.

The Standard does not currently require liquid tight tests. This is something that should be addressedwithin this standard. A reference in the Annex to ASHRAE 154 was included where more specific information is providedon these tests.

_______________________________________________________________________________________________96-35 Log #13

_______________________________________________________________________________________________Geoff Grantland, A G&G Sheet Metal, Inc.

Revise text to read as follows:Butt welded connections shall not be permitted.

A qualified welder performing a butt weld will have a liquid tight, smooth surface on the interior of theduct. This weld eliminator grease capture areas along weld joints.

The committee has reaffirmed over the years that butt-weld duct-to-duct connections do notprovide the strength and endurance needed for grease duct applications.

_______________________________________________________________________________________________96-36 Log #14

_______________________________________________________________________________________________Geoff Grantland, A G&G Sheet Metal, Inc.

Revise text to read as follows:For telescoping and bell-type connections, the overlap shall not exceed 50 mm (2 in.) 6.4 mm (1/4 in.).

When a telescoping and bell-type joint is overlapped in excess of 1/4 in. a penetrating weld alongdesignated weld area will warp the duct on the inside from heat generated from the weld. This warping will provide agrease capture area. This area is either very difficult to clean or not at all.

The current requirements do not significantly increase the amount of grease capture as thesubmitter has used as substantiation for this change.




Add text to read as follows:Field-applied grease duct shall be listed in accordance with ASTM E 2336 and installed in accordance

with the manufacturer’s instructions and the listing requirements.Factory-built grease duct protection systems shall be listed in accordance with UL 2221.

: This proposal clarifies that the fire resistance rating requirements for field-applied andfactory-built grease duct enclosure systems are based on the test methods identified in 4.3.

There is considerable confusion in the application of NFPA 96 requirements by manufacturers, designersand code users regarding the requirements relating to testing versus the requirements regarding installation of greaseduct enclosure materials. Part of this confusion has been the fact that the grease duct enclosure testing provisions arelocated in 4.3, whereas the interior installation requirements are located in Chapter 7.7.

As currently structured, it is not clear that field-applied grease duct enclosures and factory-built grease duct enclosuresare unique constructions which have specialized test protocols that are designed specifically to address the unique fireexposure conditions of these assemblies. This proposal clarifies that Listed and Labeled systems referenced in 7.7 arethose described and permitted by 4.3. The language of this proposal is effectively identical to 4.3.1.2 and 4.3.3.1respectively. The General Requirements for testing field-applied grease duct enclosures and factory-built grease ductenclosures in 4.3, and the portion of Chapter 7 dealing with Interior installation of exhaust duct systems.

The proposed language is already stated in Section 4.3.1.2 and 4.3.3.1. There is no need torepeat it in this location.

_______________________________________________________________________________________________96-38 Log #68


Revise text to read as follows:Clearance from the outer surfaces of field-applied grease duct enclosures and factory-built grease duct

enclosures to the interior surfaces of construction installed around them shall be permitted to be reduced where thefield-applied grease duct enclosure materials and factory-built grease duct enclosures conforming with the requirementsof Section 4.3 are installed in accordance with the conditions of the listing and the manufacturer’s instructions and areacceptable to the authority having jurisdiction.

: This proposal provides an editorial linkage between the General Requirements for testingfield-applied grease duct enclosures and factory-built grease duct enclosures in 4.3, and the portion of Chapter 7dealing with Interior installation of exhaust duct systems.

There is considerable confusion in the application of NFPA 96 requirements by manufacturers, designersand code users regarding the requirements relating to testing versus the requirements regarding installation of greaseduct enclosure materials. Part of this confusion has been the fact that the grease duct enclosure testing provisions arelocated in 4.3, whereas the interior installation requirements are located in Chapter 7.7. This proposal clarifies thatListed and Labeled systems referenced in 7.7.2.4 are those described and permitted by 4.3.

The proposed language is not a necessary addition. Chapter 4 applies throughout the Standardso there should be no confusion as is stated by the submitter.




Revise graphic:Move the junction of the ‘Possible roof line’ and the fan housing so that the required 18” clearance is shown.

The current graphic shows the roof line touching the fan housing and lacking the required 18”clearance.

The current Figure shows the required distance between the fan and the roof. No figure wassubmitted to clarify what the the proposer was looking to change.

_______________________________________________________________________________________________96-40 Log #73


Add new text to read as follows:(4) The ability to drain grease through an approved outlet from the lowest point in the housing of the fan or duct into a

noncombustible container that is closed to weather and is structurally sound and that will not sustain combustion.Revision removes the word “trap” which had contradicted the prohibition in 7.1.4.

It appears that the submitter is proposing to replace the original 7.8.2.1(4) rather than to addnew language. The provision, as currently worded, contains the language that is submitted as well as other material thatshould not be removed from the section.

_______________________________________________________________________________________________96-41 Log #56


Revise and add text as follows:7.8.2.1, (9) Other approved fan provided it meets both all of the following:Add:(c) Exhaust fan discharge is directed up and away from the roof surface.

Absence of required direction of fan, fan discharge ductwork, or weather cap on roof terminationswithin the standard results in exhaust directed at the roof surface at the termination of the exhaust system.

Proposed change aligns with guidance for exhaust discharge direction offered for wall terminations as specified in7.8.3(4).




Revise text to read as follows:Approved upblast fans with motors surrounded by the airstream shall be hinged, supplied with flexible weatherproof

electrical cable and service hold-open retainers, and listed to UL 762 for this use.The addition makes it clear which UL Standard the fan should be listed to.

Revise title of Section 8.1 to read as follows:Exhaust Fans for Commercial Cooking Operations EquipmentCreate a new 8.1.1 to read as follows:8.1.1 Fans used in exhaust systems for commercial cooking shall be listed in accordance with UL 762.Renumber existing 8.1.1 to 8.1.2 and all subsequent sections.Modify the existing paragraphs as follows:8.1.12.1 Approved Upblast fans with motors surrounded by the airstream shall be hinged, supplied with weatherproofelectrical cable and service hold-open retainers, and listed for this use.

This language includes the reference to UL 762 that is proposed but does so in a way that it isonly stated once, applying to all exhaust fans.The title of section 8.1 has been modified to reduce confusion that the fan is used for the exhaust system not just theequipment.

_______________________________________________________________________________________________96-43 Log #75


Add new text to read as follows:Fans shall be listed to UL 762 for this use.

Assures that the fan is properly listed.

See the committee action on proposal 96-42 (Log #74).All of Section 8.1.2 should be renumbered to 8.1.3.

The committee action on proposal 96-42 (Log #74) now requires the listing that has beenproposed for inline exhaust fans.

_______________________________________________________________________________________________96-44 Log #76


Add new text to read as follows:Fans shall be listed to UL 762 for this use.

Assures that the fan is properly listed.

See the committee action on proposal 96-42 (Log #74).All of Section 8.1.3 should be renumbered to 8.1.4.

The committee action on 96-42 (Log #74) now requires the listing that has been proposed forutility set exhaust fans.



_______________________________________________________________________________________________Michael A. Anthony, University of Michigan

Add text as shown below: The air velocity through any duct shall be not less than 152.4 m/min (500 ft/min)

(NEW) 8.2.1.1+Where occupancy, food preparation requirements or duty conditions permit, air velocity through anyduct shall be permitted to be reduced below 8.2.1.1 as part of a variable speed installation.

The degree to which the fire safety objectives of this document are at odds with energy codes ought tobe discussed in this revision cycle. For example, some states are required to adopt codes to meet policies requiring30% energy reduction in buildings by 2013. ASHRAE 189.1 requires that Commercial kitchen type I and type II hoodsshall have variable speed control for exhaust and make-up air fans to reduce hood airflow rates at least 50% duringthose times when cooking is not occurring. Not all manufacturers may meet this requirement. Its implications for thesafety concepts in this document could be significant.

Extensive research has led to the establishment of the current air velocity requirements. AirVolume is permitted to be reduced, but the velocity must remain above 500 ft/min.

_______________________________________________________________________________________________96-46 Log #CP7


Renumber 8.2.3.1 to 8.2.3.2 and 8.2.3.2 to 8.2.3.3.Add a new 8.2.3.1 to read as follows:8.2.3.1* Exhaust fan shall be interlocked so that it is activated when any appliance under the hood is turned on.8.2.3.1.1 If energy sensors are used, the exhaust fan shall be activated within 15 minutes of the appliance being turnedon.8.2.3.1.2 The method of interlock shall not cause standing pilot burners to be extinguished.8.2.3.1.3 The method of interlock shall not utilize any component of the fire extinguishing system.A.8.2.3.1 The exhaust fan should be interlocked with the appliance to prevent cooking without exhaust. Interlock can beaccomplished through any method, including but not limited to, direct wiring or energy sensors such as heat ortemperature.

This has been proposed in order to provide requirements ensuring the fan operates at anytime thecooking equipment is being operated.

There is not enough information available at this time on including this new requirement. Thecommittee is soliciting input on this issue from the public and other organizations on this issue.




Add text as shown below:8.2.4 Demand ventilation installations that vary the magnitude of fan horsepower for exhaust and make-up air and

conform to minimum fire safety requirements shall be permitted . The degree to which the fire safety objectives of this document are at odds with energy codes ought to

be discussed in this revision cycle. Some states are required to adopt codes to meet policies requiring 30% energyreduction in buildings by 2013. ASHRAE 189.1 requires that Commercial kitchen type I and type II hoods shall havevariable speed control for exhaust and make-up air fans to reduce hood airflow rates at least 50% during those timeswhen cooking is not occurring. Not all manufacturers may meet this requirement. Its implications for the safetyconcepts in this document could be significant.

There is no way of ensuring that all demand control ventilation systems will operate properlyduring limited cooking. Section 8.2.2.3 already addresses lower exhaust volumes during no load exhaust situations.

_______________________________________________________________________________________________96-48 Log #57


Add new text to read as follows:Filter and odor control media shall be permitted to be protected by a sprinkler system if the design of the

system prevents the water from reaching the cooking appliances.Sprinklers are proven to be effective in this application, are readily available in interior installations,

and this allowance offers cost effective installation as an alternative to conventional wet chemical type fire-extinguishingsystems. Unlimited extinguishing media has advantages in equipment where flammable door control (absorbing) mediahas been substituted for nonflammable (oxidizing) media.

This requirement is already addressed within Section 9.3.3.



_______________________________________________________________________________________________Declan Bulger, The Fire Blanket Corporation

Review text to read as follows:Fire-extinguishing equipment shall include both automatic fire-extinguishing systems as primary protection and

portable fire extinguishers and Fire Blankets as secondary backup. Section 10.2.2 A placard identifying the use of theextinguisher and Fire Blanket as a secondary backup means to the automatic fire-extinguishing system shall beconspicuously placed near each portable fire extinguisher/Fire Blanket in the cooking area. Section 10.11 Portable FireBlankets Section 10.11.1 All portable Fire Blankets shall be tested in accordance with the ASTM F1989-05 standard andbe certified and approved accordingly Section 10.11.2 Portable Fire Blankets shall be installed in the kitchen cookingarea, and should be specifically listed for such use.

Fire Blankets that are certified to the ASTM F1989-05 standard covers the requirements for cookingfires suppression blankets to extinguish accidental cooking fires. Fire Blankets are packaged in such a manner that it isinstantly identifiable for what it is and for instant removal in the event of an accidental cooking fire. All Fire Blanketsshould be capable of either being installed on the kitchen walls or placed on countertops in the proximity of the cookingarea. Each blanket will be identifiable with the words Fire Blanket on the front and have instructions for use.


The use of such a blanket can potentially block the fixed extinguishing system agent fromreaching the cooking equipment, impeding the operation. The Standard which is referenced appears to be more suitableto residential application as opposed to the commercial cooking operations that NFPA 96 addresses.




1. Revise paragraph 10.2.3.1 to read as follows:In existing dry chemical systems, when changes in the cooking media from animal oils and fats to vegetable

oils occur, positioning of cooking equipment occur, or replacement of cooking equipment occur, the fire-extinguishingsystem shall be made to comply with 10.2.3.

2. Move paragraph 10.2.4 to the annex and reword it to read as follows:Grease removal devices, hood exhaust plenums, exhaust ducts, and cooking equipment that are not

addressed in ANSI/UL 300 or other equivalent test standards shall should be protected with an automaticfire-extinguishing system(s) in accordance with the applicable NFPA standard(s), all local building and fire codes, andthe fire extinguishing system’s manufacturer’s recommendations and shall should be approved by the authority havingjurisdiction.

There are safety concerns in the field where there is a potential for existing paragraph 10.2.3.1 to bemisunderstood and misapplied. The existing text implies that previously listed dry chemical systems can only be usedwith animal oils and fats, but it not clearly stated in the requirement.

The recommended revised text provides a clear requirement that can be enforced without prejudice. The new textmakes it clear where the cooking media is vegetable oil, the system must comply with UL300.

The existing paragraph 10.2.4 contains unenforceable recommendations. It would be better to provide information onalternatives to the minimum requirement in the annex.

Revise 10.2.3.1, and add a new 10.2.3.2 to read as follows:10.2.3.1 In existing dry chemical systems and non UL 300 wet chemical systems, when changes in the cooking mediafrom animal oils and fats to vegetable oils occur, positioning of cooking equipment occur, replacement of cookingequipment occur, or the equipment is no longer supported by the manufacturer, the fire-extinguishing system should bemade to comply with 10.2.3.10.2.3.2 Effective January 1, 2016, all existing fire-extinguishing systems shall meet the requirements of 10.2.3.

The proposed new language addresses the issue of dry chemical systems that the submitterwas speaking to. In addition, dry chemical systems and non UL 300 wet chemical systems should be taken out ofservice by a set date. Significant changes to UL 300 have been in place since 1994 and systems not meeting thistesting protocol should be removed from service due to fire safety concerns in the field.



_______________________________________________________________________________________________Doug Hohbein, Northcentral Regional Fire Code Development Committee

Add new section 10.2.3.1 and renumber:10.2.3.1* When approved by the authority having jurisdiction, automatic fire-extinguishing systems protecting

residential cooking equipment used for limited cooking operations shall comply with UL 300A or other equivalentstandards and shall be installed in accordance with the requirements of the listing.

A.10.2.3.1 The authority having jurisdiction should take into account the type of cooking being performed, the itemsbeing cooked, and the frequency of cooking operations. Examples of operations where UL 300A may be utilizedinclude the following:

(1) Small lodging occupancies with congregate cooking(2) Limited food preparation cooking facilities in health care occupancies(3) Employee break rooms where limited cooking is conducted

10.2.3.2* In existing systems, when changes in the cooking media, positioning, or replacement of cooking equipmentoccur, the fire-extinguishing system shall be made to comply with 10.2.3 or 10.2.3.1 as applicable.

NFPA 96 is currently an “all or nothing” code. The code allows for either a Type I hood and exhaustsystem with a UL 300 fire-extinguishing system, or no protection (it is unclear what “equivalent standards” are). Wewould like to see the committee specify another choice.

The proposed change and additional reference to UL 300A does not fall under the scope of thisStandard as shown is Section 1.1.

_______________________________________________________________________________________________96-52 Log #24

_______________________________________________________________________________________________Scott J. Harrison, Marioff Inc.

Add text to read as follows:10.2.6 Automatic fire-extinguishing systems shall be installed in accordance with the terms of their listing, themanufacturer’s instructions, and the following standards where applicable:(1) NFPA 12(2) NFPA 13(3) NFPA 17(4) NFPA 17A(5) NFPA 750

Each of the fire extinguishing systems used to extinguish fires in commercial cooking operations andtheir ventilation systems is listed in this paragraph NFPA 750 Standard on Water Mist Fire Protection Systems.Water mist has been approved by Factory Mutual per Class #5560 Appendix L, “Fire Tests for Water Mist Systems forthe Protection Industrial Oil Cookers” and installed in commercial cooking applications throughout the United States.This approach to protecting these operations should be included to direct AHJs, engineers and end users to thisadditional option of fire protection and provide the reference to NFPA 750 for design and installation requirements.

Although the committee does not agree with all of the submitter's substantiation, NFPA 750,Standard on Water Mist Fire Protection Systems, can be included in Section 10.2.6. Such a system still requirescompliance with UL 300 or an equivalent standard.



_______________________________________________________________________________________________Russell P. Fleming, National Fire Sprinkler Association, Inc.

Revise text to read as follows:Where the automatic fire-extinguishing system is a non-water system and in accordance with NFPA 17A

provides protection for the hood and duct in a fixed baffle hood containing a water-wash system, the water-wash systemshall be made inoperable or delayed for a minimum of 60 seconds upon operation of the automatic fire-extinguishingsystem.

The intent appears applicable to non-water extinguishing systems and could be confusing where awater-based system is used.

The proposed text may add confusion, as some 17A systems become water systems after thedischarge of the agent. In addition, all wet chemical systems are also 98 percent water, which could also add confusion.

_______________________________________________________________________________________________96-54 Log #48

_______________________________________________________________________________________________Russell P. Fleming, National Fire Sprinkler Association, Inc.

Delete this section.The original intent of the submittal for the change in the 2011 edition was to allow a water-wash

system to be supplied through the building's fire sprinkler system. This would not be permitted by NFPA 13 - Installationof Sprinkler Systems. In fact, although the proposal was "accepted in principle" a connection to the sprinkler system isnot actually allowed by the present wording of this section. The current wording also confuses the issue of whether thewater-wash system is a sprinkler system. It is not.

The intent of the committee is not to allow a water-wash system to be supplied through thebuilding's fire sprinkler system.

_______________________________________________________________________________________________96-55 Log #49

_______________________________________________________________________________________________Russell P. Fleming, National Fire Sprinkler Association

Create new subsection to 10.2.9:Renumber current 10.2.9 as 10.2.9.1.

Add new 10.2.9.2 as follows:Where the water supply is from a dedicated fire protection water supply in a building with one or more fire

sprinkler systems, separate indicating control valves and drains shall be provided and arranged so that the hood systemand sprinkler systems can be controlled individually.

The intent of the standard can be clarified if requirements for water-based fire-extinguishing systemsthat protect the cooking equipment are separated from the requirements for other water-wash systems. Most of current10.2.8 assumes that there is a separate non-water fire-extinguishing system supplementing the water-wash system.There is also a need to provide guidance where the water is not taken from the domestic water supply as in current10.2.9 but from a water supply that also serves the building sprinkler system(s). The proposed wording is similar to thatapplicable to in-rack sprinkler systems in storage occupancies in NFPA 13.



_______________________________________________________________________________________________Russell P. Fleming, National Fire Sprinkler Association

Revise text to read as follows:Simultaneous operation shall not be required where the one fixed pipe extinguishing system is an automatic

sprinkler system. Where an automatic sprinkler system is used in conjunction with a water-based fire-extinguishingsystem served by the same water supply, hydraulic calculations shall consider both systems operating simultaneously.

The introduction of water-based fire-extinguishing systems within commercial cooking hoods,potentially using the same water supply as the building's fire sprinkler system, requires consideration of simultaneousoperation.

Revise text to read as follows:Simultaneous operation shall not be required where the one fixed pipe extinguishing system is an automatic

sprinkler system.Where an automatic sprinkler system is used in conjunction with a water-based fire-extinguishing system

served by the same water supply, hydraulic calculations shall consider both systems operating simultaneously.This was an editorial revision. The actions broke the two sentences into two different numbered

sections.

_______________________________________________________________________________________________96-57 Log #5


Revise text to read as follows:Upon activation of any fire-extinguishing system for a cooking operation, all sources of fuel and electrical power that

produce heat to all equipment requiring protection by that system and all electrical outlets located under the exhausthood shall automatically shut off.

All electrical outlets under the hood should be shut off upon activation of the fire-extinguishing system.There are many instances where a small appliance or piece of cooking equipment is added and can become a source ofheat, fire or smoke that could adversely affect operation of the fire-extinguishing system. This proposal providesflexibility for the owner and safety for potential hazards.

The original purpose of this section is to shutoff equipment that can produce heat that can feedthe fire. The substantiation that is provided does not provide justification for the recommended change to the standard.

_______________________________________________________________________________________________96-58 Log #43


Revise 10.4.3 to read as follows:Any gas appliance not requiring protection but located under the same ventilating equipment where protected

appliances are located shall also be automatically shut off upon activation of any the extinguishing system.

The requirement should apply to gas appliances that are not required to be provided with protectionbut are located under hoods where protected appliances are located. This concept can be easily comprehended withthe revised text. The proposed text is a standalone requirement.




Revise text to read as follows:At least one manual actuation device shall be located a minimum of 3 m (10 ft) and a maximum of (20 ft) from

the protected kitchen appliance(s) hood exhaust system(s) within a path of egress, or at an alternate locationdetermined acceptable to the Authority Having Jurisdiction (AHJ).

Determining distance away from the protected hood exhaust systems gives better direction than theprotected appliance. Confusion has occurred where long cooking lines or back to back cooking lines present severaldifferent points of measurement with only a 10 ft spread between maximum and minimum. Having language that allowsan alternative distance – if acceptable to the AHJ – can bring some installations, such as mobile commercial cookingoperations that cannot achieve a practical 10 ft distance from either the protected appliance or the protected hood withinthe intent of the standard.

_______________________________________________________________________________________________96-60 Log #6


Revise text to read as follows:Upon activation of an automatic fire-extinguishing system, an audible alarm or visual indicator shall be provided to

show that the system has activated. The audible alarm and/or visual indicator shall be capable of being heard or seenin the vicinity of the protected cooking equipment.

Many times the fire-extinguishing system is located in a remote location from the cooking equipmentbeing protected, such as an adjacent room or above a ceiling. There have been instances where, due to the “cleanagent” being utilized, it is difficult to see that the system has triggered and the audible/visual notification cannot beheard/seen due to the remote or inaccessible location of the system.

The proposed wording is vague and the term "vicinity" is non enforceable. Evidence ofdischarge should be apparent.




Revise 10.10.1 through 10.10.4 to read as follows:

Portable fire extinguishers shall be selected and installed in kitchen cooking areas in accordance with NFPA10 and shall be specifically listed for such use.

Portable extinguishers shall use agents that saponify upon contact with hot grease in accordance with NFPA10 (Class K extinguishers). Class K fire extinguishers shall be provided for cooking appliance hazards that involvecombustible cooking media (vegetable and animal oils and fats).

Other fire Fire extinguishers shall be provided for other hazards in the kitchen area kitchen cooking areas andshall be selected and installed in accordance with NFPA 10.

Portable fire extinguishers shall be maintained in accordance with NFPA 10.

The recommended text uses terms that can be found and referenced in NFPA 10. The requirement inparagraph 10.10.2 should clearly state that only extinguishers with a Class K rating are permitted. Paragraph 10.10.3 isintended to cover other hazards and should be based on the hazards identified onsite.

Revise 10.10.1 through 10.10.4 to read as follows:

Portable fire extinguishers shall be selected and installed in kitchen cooking areas in accordance with NFPA10 and shall be specifically listed for such use.

Portable extinguishers shall use agents that saponify upon contact with hot grease in accordance with NFPA10 (Class K extinguishers). Class K fire extinguishers shall be provided for cooking appliance hazards that involvecombustible cooking media (vegetable and animal oils and fats).

Other fire Portable Fire extinguishers shall be provided for other hazards in the kitchen area kitchen areas andshall be selected and installed in accordance with NFPA 10.

Portable fire extinguishers shall be maintained in accordance with NFPA 10.The term "portable" was added to Section 10.10.3 to be consistent within the Section.

In section 10.10.3, the term "kitchen cooking areas" was changed to "kitchen area" so as to avoid confusion of possiblyrequiring additional extinguishers being installed in the same locations as the Class K extinguishers required by 10.10.2.




Revise 11.1.6.1 to read as follows:Where the fire-extinguishing system or exhaust system is nonoperational or impaired, the systems shall be

tagged as noncompliant, and the system owner or owner’s representative shall be notified in writing of the impairmentand where required, the authority having jurisdiction shall be notified.

Correlation with NFPA 17A, proposal 17A-81 (paragraph 7.3.3.4.1), which reads as follows:“Until such repairs are accomplished, the systems shall be tagged as non-compliant, and the owner or owner’s

representative responsible for the system shall be notified and where required, the authority having jurisdiction shall benotified of the impairment.”

Revise 11.1.6.1 to read as follows:Where the fire-extinguishing system or exhaust system is nonoperational or impaired, the systems shall be

tagged as noncompliant, and the system owner or owner’s representative shall be notified in writing of the impairmentand where required, the authority having jurisdiction shall be notified.

The requirement to notify the owner or owner's representative in writing is important and shouldnot be removed from the Standard.

_______________________________________________________________________________________________96-63 Log #51

_______________________________________________________________________________________________Norbert W. Makowka, National Association of Fire Equipment Distributors

Add new text to read as follows:Where the maintenance of the extinguishing system(s) reveals deficiencies or defective parts that could cause

an impairment or failure of proper operation of the system(s), the deficiencies shall be removed and affected parts shallbe replaced or repaired in accordance with the manufacturer’s recommendations.

Add deficiencies to the items that can cause impairment of the fire system and the requirement toabate them.

Move existing 11.2.4 down and renumber subsequent sections.

The term "deficiencies" could be too broad and encompass conditions beyond the scope of theStandard.




Revise text to read as follows:The fusible links shall be destroyed when removed. Destroyed fusible links from the most recent inspection shall

remain on site for inspection by the authority having jurisdiction.Destroyed fusible links should be kept on site so they can be viewed by the authority having jurisdiction.

There is no way to know if the links have been removed or “recycled” between systems unless they are available forviewing.

There is no reasonable way to show that the destroyed fusible links are those from the mostrecent inspection.

_______________________________________________________________________________________________96-65 Log #62


Change text as shown below: Fusible links on fire damper assemblies shall be replaced at least semiannually

. or more frequently as necessary.This proposal is intended to revisit a discussion about risk rationalization begun by the US General

Services Administration during the last cycle. (Refer to Proposal 96-110 (Log #76) authored by Joshua Elvove.)In general, fixed interval inspection, testing, maintenance and replacement of any safety element -- including fusible

links -- is not always effective use of the grim O&M funding.. In the education facilities industry, there is a broad rangeof cooking operations that span in scale from the local elementary school to large university-affiliated health caresystems with several commercial cooking facilities in hospitals.

Some of the statements in the negative ballots are worth revisiting; two of them reproduced here for the convenience ofthe committee:

…"To ensure requirements for fire damper fusible links are in concert with similar requirements for fusible metal alloysensing elements serving kitchen fire extinguishing systems. Fire damper fusible links should not have to be replacedevery 6 months if located where not subject to contaminant loading such as low-volume cooking operations, such aschurches, day camps, seasonal businesses, or senior centers (permitted to be inspected for grease building up annuallyper Table 11.4). If grease build-up inspections can be conducted annually, there’s no need to replace fusible links moreoften."…

…"The date of manufacture marked on fusible links does not limit when they can be used. These devices haveunlimited shelf life. The intent of 11.3.2 is to require semiannual replacement of fusible links that have been installed inenvironments that subject them to containment loading, such as grease in restaurant hoods and ducts, that couldadversely affect their proper operation. Without technical substantiation, the persistence of this requirement looks likewriting a revenue stream. The greater risk lies in adopting jurisdictions simply ignoring the requirement."

What each of the foregoing statements have in common is a recognition that generic, one-size fits all approaches arenot as effective in increasing fire safety as more risk-informed approaches that are scaled to the risks inherent in theprotected premises and the scale of the cooking operation.…

The proposed language changes the requirement from prescriptive language regardingreplacement and makes the replacement frequency unenforceable.




Revise text to read as follows:Upon inspection, if the exhaust system is found to be contaminated with deposits from grease laden vapor,

contaminated portions of the exhaust system shall be cleaned by a properly trained, qualified, and certified person(s)acceptable to the Authority Having jurisdiction in accordance with IKECA/ANSI C-10.

Since the last revision cycle, IKECA has been recognized by ANSI as a Standards DevelopmentOrganization. As such, IKECA has developed an operating standard for the cleaning of commercial kitchen exhaustsystems in accordance with the spirit of ANSI Essential Requirements, Section 2.4.2, coordination/harmonization.

Revise text to read as follows:Upon inspection, if the exhaust system is found to be contaminated with deposits from grease laden vapor,

contaminated portions of the exhaust system shall be cleaned in accordance with IKECA/ANSI C-10 or equivalentstandard by a properly trained, qualified, and certified person(s) acceptable to the Authority Having jurisdiction.

The proposed additional language was relocated within the Section to follow the term"cleaning" as it is a cleaning standard rather than one for certification. The option for the cleaning to be performed withan equivalent standard was also included.Note: The full committee did not have a copy for review at the point of the meeting.

_______________________________________________________________________________________________96-67 Log #78


Revise text to read as follows:All listed appliances shall be installed in accordance with the terms of their listings and the manufacturer’s instruction.

Gas fueled appliances shall be installed to the requirements of NFPA 54 or NFPA 58.NFPA 54 and 58 have specific instructions regarding placement and installation of gas fueled

appliances and these standards should be cited here.

Add the proposed new language to the annex as follows:A.12.1.2.1 Gas fueled appliances should be installed to the requirements of NFPA 54 or NFPA 58.

Some jurisdictions may not adopt NFPA 54, National Fuel Gas Code, or NFPA 58, LiquefiedPetroleum Gas Code, and this would then require the use of those Standards if located here in the body of theStandard.



_______________________________________________________________________________________________Gayle Pennel, Aon Fire Protection Engineering

Revise text to read as follows:Except as permitted in 14.3.4, eExhaust systems serving solid fuel cooking equipment, including gas or

electrically operated equipment, shall be separate from all other exhaust systems.* Gas or electrically operated equipment that utilize solid fuel for flavoring, where the solid fuel provides less

than 5% of the heat contribution for cooking shall comply with 14.8, but shall not be required to have a separate exhaustsystem. Cooking processes, including, but not limited to, those that use any solid fuel for cooking enhancement orsmoke flavoring, shall comply with 14.3.3 and Section 14.8.

A.14.3.4 * Using small quantities of wood chips or wood strips for flavoring, provides little or no heat contribution forcooking, and does not add significantly to the class A products of combustion exhausted during the cooking process.Verification of the heat contribution can be made by 1) Making theoretical calculations of the potential heat contributionfrom the wood and comparing that to the heat contribution from the gas or electric power, or, 2) measuring cookingsurface temperatures with and without wood chips or strips, or 3) other means acceptable to the authority havejurisdiction.

The requirement for separate exhaust systems causes an onerous unjustified cost when addingsmoke flavoring to existing gas or electric cooking equipment. The attached documentation shows that the impact onthe surface temperature of the cooking equipment using wood strips for flavoring was negligible . UL uses the sameprotocol for testing duct extinguishing systems serving gas fired, electric fired, and solid fuel cooking equipment. Theincreased cleaning requirements in 14.8 will offset the minor changes that a small amount of wood smoke could causeon the surface coating inside the hood and exhaust system. While a 5% limit is somewhat arbitrary, it does provide ameasurable guideline that can be imposed if the quantity of wood used in the process appears to be excessive to theauthority having jurisdiction.


Revise Section 14.3.3 and 14.3.4 as follows:Except as permitted in 14.3.4, eExhaust systems serving solid fuel cooking equipment, including gas or

electrically operated equipment, shall be separate from all other exhaust systems.* Gas operated equipment utilizing solid fuel for flavoring, that meet all of the following conditions shall comply

with section 14.8 but shall not be required to have a separate exhaust system. Cooking processes, including, but notlimited to, those that use any solid fuel for cooking enhancement or smoke flavoring, shall comply with 14.3.3 andSection 14.8.1.The gas operated equipment shall be listed with the solid fuel holder.2.The solid fuel holder shall be located underneath the gas burners.3.Spark arresters conforming with section 14.1.6 shall be provided.4.The maximum quantity of solid fuel consumed shall not exceed 4.5 pounds per hour per 100,000 BTU of gas burnercapacity.5.The gas operated equipment shall be protected by a fire suppression system listed for the equipment including thesmoker box

The proposal was revised to address several of the Committee's concerns.These concerns included:1. That the equipment be listed for the purpose2. That solid fuel not be located above the gas burner.3. That spark arrestors be provided to keep any embers from being able to go into the duct work.4. The amount of fuel permitted, be specified in a matter that is easier to enforce5. The fire suppression be adequate to protect the entire cooking operation




Delete paragraph 14.7.7 entirely.Paragraph 14.7.1 already requires listed fire extinguishing equipment. The applicable UL test protocols

give assurance that the extinguishing equipment listed is appropriate.

The current 14.7.7 gives further direction on extinguishing requirements that are not directlyaddress by 14.7.1 as is stated in the substantiation.

_______________________________________________________________________________________________96-70 Log #80


Add two commas:Combustible and limited-combustible surfaces or construction, within 0.92 m (3 ft) of the sides or 1.8 m (6 ft) above a

solid cooking appliance, shall be protected in a manner acceptable to the authority having jurisdiction.Editorial.

This sentence reads correctly as it is currently written. No modification is needed.

_______________________________________________________________________________________________96-71 Log #81


Add new text to read as follows:(1) Cooking surface, duct, and plenum protection shall be provided. Additional duct nozzle(s) shall be provided at the

bottom of the downward duct section directing the discharge up. Additional nozzle(s) shall be provided facing across thehorizontal bottom duct section and additional nozzle(s) shall be provided to protect any duct section that subsequentlyrises vertically with the discharge directed upward.

The UL 300 protocol requires fire suppression system to function with the exhaust fan either on or off.The protocol does test downdraft duct constructions. If the exhaust fan is off at the time of a system discharge there isuncertainty about the extinguishing agent’s ability to reach all duct sections. Adding additional nozzles at these criticalchanges in elevation/direction could provide the needed protection.

The proposed language is too specific. The nozzle location should be determined bycompliance with UL 300 and the manufacturer.



_______________________________________________________________________________________________Doug Hohbein, Northcentral Regional Fire Code Development Committee

Revise to read: This judgment should take into account the type of cooking beingperformed, the items being cooked, and the frequency of cooking operations. Examples of operations that might notrequire compliance with this standard include the following:

(1) Day care centers warming bottles and lunches(2) Therapy cooking facilities in health care occupancies(3) Churches and Small meeting operations that are not cooking meals that produce grease-laden vapors(4)Employee break rooms where food is warmed

Section 1.1.4 (3) specifically states that assembly occupancies are not exempt from the Standard.Churches are assembly occupancies and must be protected.

Not all churches are assembly occupancies and this is useful information.

_______________________________________________________________________________________________96-73 Log #38


Revise this information to read:Filters are expected required to minimize limit the projection of flames to a maximum of 18 inches

downstream when attacked by flame on the upstream side, and are expected to maintain their strength, shape, andintegrity when exposed to the anticipated rough handling, cleaning or replacement, and service found in the field.

Grease filters that are removable as defined in paragraph 3.3.25.1 for which this information has beenprovided, are required to be listed in accordance with UL 1046, as specified in paragraph 6.1.2. UL 1046 requires thatduring the flame exposure test, no flame extension greater than 18 inches occurs beyond the downstream face of thefilter. The proposed changes reflect this requirement. Also, some grease filters available today are not to be cleaned, butare to be disposed of when loaded with grease, and replaced with new filters. The proposed change addresses suchfilters.

Revise this information to read:Filters should limit expected minimize the projection of flames, after grease loading in accordance with

UL 1046, to a maximum of 18 inches downstream when attacked by flame on the upstream side, and are expected tomaintain their strength, shape, and integrity when exposed to the anticipated rough handling, cleaning, and servicefound in the field.

More specific language was added to provide additional information about the testing of greasefilters.The term "replacement" was removed as it is adequately covered by the use of the term "handling"




Revise this information to read:This type of filter is not tested, listed, or acceptable for commercial cooking operations due to the

increased fire hazard. , if it is evaluated as an integral part of a listed exhaust hood or islisted in conjunction with a primary filter in accordance with UL 1046.

The information in this paragraph was not updated when the definition of mesh filters was revised andthe requirement for the mesh filters was included in paragraph 6.1.3 during the last revision cycle for this document. Theproposed changes address that omission, include the wording from paragraph 6.1.3 for the benefit of readers of thisparagraph, correct reference to the paragraph in the document, and make the information in this paragraph consistentwith the requirement for the mesh filters in this document.

Delete A.3.3.25.2.

The current annex language is no longer applicable, and the proposed language simplyrestated the requirements of Section 6.1.

_______________________________________________________________________________________________96-75 Log #58


Add a new diagram A.4.2(F) as shown. Renumber the diagrams following accordingly.

****Insert Artwork here****

Adding the diagram of a wall mounted fan with required clearances and features will allow greaterguidance pursuant to installation of these fans where the methodology is employed.

Allows alignment with 7.8.3(7).

_______________________________________________________________________________________________96-76 Log #46


Delete A.11.2.6.

The first sentence of A.11.2.6 is a duplicate of 11.2.7. The last sentence seems repetitive.




Revise the sentence in this paragraph beginning with “When to clean:” by deleting the latter part ofthat sentence, to read as follows:

A measurement system of deposition should be established to trigger a need to clean, in addition to atime reference based on equipment emissions.

This information should be revised as proposed above, because: (1) “time reference” such as monthly,quarterly, and semiannually and “equipment emissions” such as from char-broilers, fryers, and ovens should relate &apply to frequency of inspection as specified in Table 11.4 in this document, and not to the frequency of cleaning, (2)use of high efficiency grease filters and other new technologies used in the hoods which reduce grease accumulation inthe kitchen exhaust system (KES) extends frequency of cleaning the KES, (3) hence the “time reference” for cleaningthe KES based on “equipment emissions” without taking into account the volume of cooking as mentioned in Table 11.4in this document and amount of grease accumulation in the KES, is subjective, and not appropriate, and (4)measurement of grease deposition, mentioned in the first part of this sentence, to trigger a need for cleaning should bethe only criteria for when to clean, and not also the time reference.

_______________________________________________________________________________________________96-78 Log #CP6


Add a new A.12.1.1 as follows:A.12.1.1 Cooking appliances that are designed for permanent installation, including (but not limited to) ranges, ovens,stoves, broilers, grills, fryers, griddles and barbecues, should be installed in accordance with the manufacturer’sinstallation instructions.

1) Commercial electric cooking appliances should be listed and labeled in accordance with ANSI/UL 197.2) Microwave cooking appliances should be listed and labeled in accordance with ANSI/UL 923.3) Oil-burning stoves should be listed and labeled in accordance with ANSI/UL 896.4) Wood-fired cooking appliances should be listed and labeled in accordance with UL 737, UL Subject 2162, or UL

Subject 2728 depending upon exact appliance type.5) Gas-fired cooking appliances should be listed and labeled in accordance with ANSI

Z83.11.6) Gas-wood fired cooking appliances should be listed and labeled in accordance with ANSI Z83.11, UL 737, and/or

UL Subject 2162 depending on exact appliance type.

This new annex material provides useful information on the various cooking appliance standards.




Add a new Annex B.1.2.4 International Kitchen Exhaust Cleaning Association (IKECA)Publications, 100 North 20th St., Suite 400, Philadelphia, Pa., 19103.

IKECA/ANSI Standard C-10 Cleaning of Commercial Kitchen Exhaust systemsSince the last revision cycle, IKECA has been recognized by ANSI as a Standards Development

Organization. As such, IKECA has developed an operating standard for the cleaning of commercial kitchen exhaustsystems in accordance with the spirit of ANSI Essential Requirements, Section 2.4.2, coordination/harmonization.

Add the reference to Chapter 2 rather than to Annex B.The referenced document has been placed in the body of the Standard and therefore belongs

in Chapter 2 rather than Annex B.

_______________________________________________________________________________________________96-80 Log #65


Add Annex B 1.2 Informational References as shown below:ASHRAE/USGBC/IES Standard 189.1-2009 - Standard for the Design of High-Performance Green BuildingsASHRAE 5.10 Kitchen Ventilation.

States are required to adopt codes to meet policies requiring 30% energy reduction in buildings by2013. ASHRAE 189.1 requires that Commercial kitchen type I and type II hoods shall have variable speed control forexhaust and make-up air fans to reduce hood airflow rates at least 50% during those times when cooking is notoccurring. Not all manufacturers may meet this requirement . Its implications for the safety concepts in this documentcould be significant so it should at least be tracking somewhere in NFPA 96/

This document is not referenced anywhere within the standard and therefore does not belong inAnnex B.1.





ANSI/UL 199, , 2005, revised 2008.ANSI/UL 300, ,

2005, Revised 2010.ANSI/UL 710B, , 2004, revised 2009 2010.UL Subject 199B,

, 2006.UL Subject 199E,

, 2004.

Update referenced standards to most current edition.


ANSI/UL 199, , 2005, revised 2008.ANSI/UL 300, ,

2005, Revised 2010.ANSI/UL 710B, , 2004, revised 2009 2011.UL Subject 199B,

, 2006.UL Subject 199E,

, 2004.A correction was made to the revision date of UL 710B.

_______________________________________________________________________________________________96-82 Log #CP8


Revise a reference in B.2 as follows:American Society of Heating, Refrigerating, and Air Conditioning Engineers, "Kitchen Ventilation," Chapter 33 inHeating, Ventilating, and Air-Conditioning Applications. Atlanta: ASHRAE, 2011

Revised to the most recent edition.


96 a2013 rop ballot - nfpa · ansi/ul 300,, 2005, revised 2010. ul 710, , 1995, revised2007, 2010....

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