1、Designation: E2336 16 An American National StandardStandard Test Methods forFire Resistive Grease Duct Enclosure Systems1This standard is issued under the fixed designation E2336; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThe protection of grease ducts under fire exposure conditions is an item of importance in securingconstructio
3、ns that are safe, and that are not a menace to neighboring construction nor to the public.Recognition of this is registered in the codes of many authorities, municipal and other agencies. Manytypes of enclosure materials are used to protect grease ducts. Normally, these enclosure materials areeither
4、 applied to grease ducts in the field or are fabricated as part of the grease duct when shipped fromthe factory. Evaluating enclosure materials used to protect a grease duct from fire is an aid forpredicting their fire performance and promotes uniformity in requirements of various authorities. Todo
5、this it is necessary that the fire-endurance properties of enclosure materials be measured andspecified according to a common standard expressed in terms that are applicable alike to a wide varietyof materials, situations, and conditions of exposure.1. ScopeNOTE 1The majority of this standard is bas
6、ed on the Model BuildingCode Evaluation Service2Acceptance Criteria titled ACCEPTANCECRITERIA FOR GREASE DUCT ENCLOSURE ASSEMBLIES, AC101,which was created in 1994. Numerous design listings and labeledmaterials exist based on the provisions of this standard.1.1 These test methods evaluate the enclos
7、ure materials andthe grease duct enclosure systems using the following testmethods: noncombustibility, fire resistance, durability, internalfire, and fire-engulfment with a through-penetration fire stop.1.2 These test methods prescribe a standardized fire expo-sure for comparing the test results of
8、the enclosure materialsand grease duct enclosure systems. The results of these tests areone factor in assessing predicted fire performance of greaseduct enclosure systems. Using these test results to predict theperformance of actual grease duct enclosure systems requiresthe evaluation of test condit
9、ions.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The text of these test methods references notes andfootnotes which provide e
10、xplanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered as requirements of the fire test response standard.1.5 These test methods are used to measure and describe theresponse of materials, products, or assemblies to heat andflame under controlled
11、conditions, but does not by itselfincorporate all factors required for fire hazard or fire riskassessment of the materials, products, or assemblies underactual fire conditions.1.6 These test methods do not purport to address all of thesafety concerns, if any, associated with its use. It is therespon
12、sibility of the user of these test methods to establishappropriate safety and health practices and to determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3C518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flo
13、w Meter ApparatusC569 Test Method for Indentation Hardness of PreformedThermal Insulations (Withdrawn 1988)4E84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE119 Test Methods for Fire Tests of Building Constructionand Materials1This test method is under the jurisdiction of AST
14、M Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.11 on FireResistance.Current edition approved April 1, 2016. Published April 2016. Originallyapproved in 2004. Last previous edition approved in 2014 as E233614. DOI:10.1520/E2336-16.2ICC Evaluation Service, Inc. (
15、ICBO Evaluation Service, Inc.) 5360 WorkmanMill Road, Whittier, CA 90601-22983For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page ont
16、he ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750CE176 Termi
17、nology of Fire StandardsE631 Terminology of Building ConstructionsE814 Test Method for Fire Tests of Penetration FirestopSystems2.2 Other Documents:UL 385 Standard for Play Pipes for Water Supply Testing inFire-Protection Service53. Terminology3.1 Definitions: For definitions of terms used in this t
18、estmethod associated with fire issues refer to the definitionscontained in Terminology E176 and for building issues refer tothe definitions contained in Terminology E631. When there isa conflict between Terminology E176 and Terminology E631definitions, the definitions in Terminology E176 shall apply
19、.3.2 Definitions of Terms Specific to This Standard:3.2.1 enclosure material, nthe product applied to thegrease duct to provide fire resistance.3.2.2 fire-separating element, nfloors, walls, and parti-tions having a period of fire resistance determined in accor-dance with fire resistance test method
20、s such as Test MethodsE119.3.2.3 fire side, adjthe face of the test assembly or testspecimen exposed to the heat or flame or both of the testapparatus.3.2.4 grease duct (also known as kitchen exhaust greaseduct), na tube or conduit utilized for conveying air.3.2.4.1 DiscussionIt is usually equipped
21、with an accessopening for cleaning the orifice.3.2.5 grease duct enclosure system, nconsists of thegrease duct, an enclosure material(s), a support and fasteningsystem, and an access opening for cleaning the grease duct.3.2.6 orifice, nthe continuous hollow area or openingwithin the grease duct or c
22、ombustion chamber.3.2.7 supporting construction, nthe arrangement of build-ing sections forming the fire-separating elements into whichthe grease duct enclosure system is installed.3.2.8 test assembly, nthe complete assembly composed ofa test specimen(s) together with its supporting construction.3.2
23、.9 test specimen, na material, product, or assemblageof a specific design, composition, density, and dimensions.3.2.9.1 Discussionthe enclosure material or the greaseduct enclosure system are examples of test specimens.3.2.10 unexposed side, nthe face or part not directlyexposed to the heat or flame
24、 or both of the test apparatus.3.2.11 unexposed surface thermocouple, ntemperature-measuring device placed on the unexposed side.4. Summary of Test Method4.1 Representative test specimens of the enclosure materialor the grease duct enclosure system are subjected to thefollowing tests. These test met
25、hods describe the following testsequence and procedures:4.1.1 A noncombustibilty test, Test Method E136, demon-strates the enclosure materials ability to resist combustion at astandardized temperature and duration.4.1.2 A fire resistance test, Test Methods E119, illustratesthe ability of the enclosu
26、re material to resist the effects of firewhen applied in a vertical application.4.1.3 A durability test intended to simulate the effects oflong-term exposure of typical in-service conditions on thethermal transmission qualities of the enclosure materials whensubjected to a modified version of Test M
27、ethod C518.4.1.4 An internal fire test uses two standardized fire expo-sures occurring inside the grease duct. Both tests illustrate theenclosure materials ability to resist thermal transmission ofheat to the unexposed side in a horizontal application. The firststandardized fire exposure is intended
28、 to simulate long termexposure of the enclosure material to a standardized servicecondition. The second standardized fire exposure is intended tosimulate a standardized grease fire.4.1.5 A fire-engulfment test uses a standardized fireexposure, the time temperature curve of Test Methods E119,tosimula
29、te a fire occurring on the outside of the grease duct, anddemonstrates the ability of the grease duct enclosure system toremain intact without a through opening. The fire-engulfmenttest also tests the fastening methods used to secure theenclosure material to the grease duct and the supportingsystem.
30、 The fire-engulfment test also provides a means to testa through-penetration fire stop to determine its compatibilitywith the grease duct enclosure system.5. Significance and Use5.1 These test methods are intended to evaluate the abilityof the grease duct enclosure system to do the following:5.1.1 R
31、esist the effects of a standardized fire exposure,5.1.2 Retain its integrity, or5.1.3 Exhibit both properties dependent upon the type oftest assembly involved during a predetermined test exposure.5.2 These test methods provide for the following measure-ments and evaluations where applicable:5.2.1 Ca
32、pability of the enclosure material to resist flaming(combustion) when exposed to 1382F (750C).5.2.2 Loadbearing ability of the tested support system andfastening system to carry the load of the grease duct enclosuresystem during a standardized fire-engulfment test.5.2.3 Ability of a fire stop to mee
33、t the requirements of TestMethod E814 when used with a grease duct enclosure system.5.2.4 Ability of the enclosure material to resist the passageof flames and hot gases during a standardized fire resistancetest and a standardized internal fire test.5.2.5 Transmission of heat through the grease duct
34、and theenclosure material(s) during a standardized fire resistance testand a standardized internal fire test.5.2.6 Ability of the grease duct enclosure system to resistthe passage of water during a standardized hose stream test.5.2.7 Comparative measurement of temperature aging of theenclosure mater
35、ial(s) when subjected to standardized cyclicthermal transmissions.5Available from Underwriters Laboratories (UL), Corporate Progress, 333Pfingsten Rd., Northbrook, IL 60062.E2336 1625.3 These test methods do not provide the following:5.3.1 Full information as to performance of the enclosurematerial
36、or the grease duct enclosure system constructed withcomponents, densities, or dimensions other than those tested.5.3.2 Evaluation of the degree by which the enclosurematerial or grease duct enclosure system contributes to the firehazard by generation of smoke, toxic gases, or other productsof combus
37、tion.5.3.3 Measurement of the degree of control or limitation ofthe passage of smoke or products of combustion through thegrease duct enclosure system.5.3.4 Measurement of flame spread over the surface of thegrease duct enclosure system.NOTE 2The information in 5.3.2 5.3.4 is usually determined byot
38、her suitable test methods. For example, 5.3.4 is typically determinedusing Test Method E84.5.4 In these test methods, the test specimens are subjected toone or more specific tests under laboratory conditions. Whendifferent test conditions are substituted or the end-use condi-tions are changed, it is
39、 not always possible by, or from, thesetest methods to predict changes to the characteristics measured.Therefore, the results of these laboratory tests are valid only forthe exposure conditions described in these test methods.5.5 Various test methods in these test methods require a testspecimen to b
40、e exposed to a standard fire that is controlled toachieve specified temperatures throughout a specified timeperiod. The fire-engulfment and vertical fire resistance tests arefollowed by the application of a standardized hose stream test.These test methods provide a relative measure of the fire-test-
41、response of comparable enclosure materials and grease ductenclosure systems under these exposure conditions. The fireexposure is not representative of all fire conditions becauseconditions vary with changes in the amount, nature anddistribution of fire loading, ventilation, compartment size andconfi
42、guration, and heat sink characteristics of the compartment.Variation from the test conditions or test specimenconstruction, such as size, materials, method of assembly, alsoaffects the fire-test-response. For these reasons, evaluation ofthe variation is required for application to construction in th
43、efield.6. Apparatus6.1 Combustion ChamberA tubular L-shaped assemblyused with a gas-fired burner(s) capable of delivering theminimum interior temperatures for the internal fire test asspecified in Section 14.NOTE 3An example of such a device is an L-shaped square steel tubemeasuring 84 6 1 in. by 96
44、 6 1 in. on the exterior legs with an orificemeasuring a minimum 24 by 24 in. and insulated on the interior with aminimum 2 in. thick 8 lb/ft3density ceramic fiber blanket as shown in Fig.1.6.2 Gas-fired BurnerA device that produces heat andflame from a gas undergoing combustion that is capable ofpr
45、oviding the minimum temperatures to perform the internalfire test as specified in Section 14.NOTE 4A burner with a minimum heat input (Btu/h) of at least 925times the cross-sectional area of the test assembly orifice, in.2(mm2), hasbeen proven adequate to produce the 500F (260C) internal temperature
46、during that exposure period and a burner with a minimum heat input(Btu/h) of at least 4025 times the cross-sectional area of the test assemblyorifice, in.2(mm2), has been proven adequate to produce the 2000F(1093C) internal temperature during that exposure period. For rectangu-lar ducts, the cross-s
47、ectional area shall be modified when determining theminimum heat input. For rectangular ducts, an equivalent diameter (DE)and the equivalent cross-sectional area shall be determined as follows:DE5 1.30ab!0.625a 1 b!0.25(1)where:a = length of one side of duct,b = length of adjacent side of duct, andE
48、quivalent Area6=(DE/2)26.3 FurnaceAn enclosed furnace facility capable of con-trolling a fire to the time-temperature curve in Test MethodsE119. A vertical furnace with a test frame is shown in Fig. 2and a horizontal furnace is shown in Fig. 3.6.4 Furnace Thermocouples:6.4.1 The E119 furnace thermoc
49、ouples shall:6.4.1.1 Be protected by sealed porcelain tubes having anominal34-in. (19-mm) outside diameter and18-in. (3-mm)wall thickness, or, as an alternative, in the case of base metalthermocouples, protected by a standard12-in. (13-mm) diam-eter wrought steel or wrought iron pipe of standard weight, and6.4.1.2 Have a time constant between the range of 5.0 to 7.2min while encased in the tubes described in 6.4.1.1.6.4.2 Other types of E119 protection tubes or pyrometersshall be used only when they give the same indications undertest conditions a
