ASTM E2336-04(2013)
(Test Method)Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems
Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems
SIGNIFICANCE AND USE
5.1 These test methods are intended to evaluate the ability of the grease duct enclosure system to do the following:
5.1.1 Resist the effects of a standardized fire exposure,
5.1.2 Retain its integrity, or
5.1.3 Exhibit both properties dependent upon the type of test assembly involved during a predetermined test exposure.
5.2 These test methods provide for the following measurements and evaluations where applicable:
5.2.1 Capability of the enclosure material to resist flaming (combustion) when exposed to 1382°F (750°C).
5.2.2 Loadbearing ability of the tested support system and fastening system to carry the load of the grease duct enclosure system during a standardized fire-engulfment test.
5.2.3 Ability of a fire stop to meet the requirements of Test Method E814 when used with a grease duct enclosure system.
5.2.4 Ability of the enclosure material to resist the passage of flames and hot gases during a standardized fire resistance test and a standardized internal fire test.
5.2.5 Transmission of heat through the grease duct and the enclosure material(s) during a standardized fire resistance test and a standardized internal fire test.
5.2.6 Ability of the grease duct enclosure system to resist the passage of water during a standardized hose stream test.
5.2.7 Comparative measurement of temperature aging of the enclosure material(s) when subjected to standardized cyclic thermal transmissions.
5.3 These test methods do not provide the following:
5.3.1 Full information as to performance of the enclosure material or the grease duct enclosure system constructed with components, densities, or dimensions other than those tested.
5.3.2 Evaluation of the degree by which the enclosure material or grease duct enclosure system contributes to the fire hazard by generation of smoke, toxic gases, or other products of combustion.
5.3.3 Measurement of the degree of control or limitation of the passage of smoke or products of combust...
SCOPE
Note 1—The majority of this standard is based on the Model Building Code Evaluation Service2 Acceptance Criteria titled ACCEPTANCE CRITERIA FOR GREASE DUCT ENCLOSURE ASSEMBLIES, AC101, which was created in 1994. Numerous design listings and labeled materials exist based on the provisions of this standard.
1.1 These test methods evaluate the enclosure materials and the grease duct enclosure systems using the following test methods: noncombustibility, fire resistance, durability, internal fire, and fire-engulfment with a through-penetration fire stop.
1.2 These test methods prescribe a standardized fire exposure for comparing the test results of the enclosure materials and grease duct enclosure systems. The results of these tests are one factor in assessing predicted fire performance of grease duct enclosure systems. Using these test results to predict the performance of actual grease duct enclosure systems requires the evaluation of test conditions.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 The text of these test methods references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the fire test response standard.
1.5 These test methods are used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.
1.6 These test methods do not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of these test methods to establish appr...
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Designation: E2336 − 04(Reapproved 2013) An American National Standard
Standard Test Methods for
Fire Resistive Grease Duct Enclosure Systems
This standard is issued under the fixed designation E2336; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
The protection of grease ducts under fire exposure conditions is an item of importance in securing
constructions 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. Many
types of enclosure materials are used to protect grease ducts. Normally, these enclosure materials are
eitherappliedtogreaseductsinthefieldorarefabricatedaspartofthegreaseductwhenshippedfrom
the factory. Evaluating enclosure materials used to protect a grease duct from fire is an aid for
predicting their fire performance and promotes uniformity in requirements of various authorities. To
do this it is necessary that the fire-endurance properties of enclosure materials be measured and
specifiedaccordingtoacommonstandardexpressedintermsthatareapplicablealiketoawidevariety
of materials, situations, and conditions of exposure.
1. Scope footnotes (excluding those in tables and figures) shall not be
NOTE 1—The majority of this standard is based on the Model Building
considered as requirements of the fire test response standard.
Code Evaluation Service Acceptance Criteria titled ACCEPTANCE
1.5 These test methods are used to measure and describe the
CRITERIA FOR GREASE DUCT ENCLOSURE ASSEMBLIES, AC101,
which was created in 1994. Numerous design listings and labeled response of materials, products, or assemblies to heat and
materials exist based on the provisions of this standard.
flame under controlled conditions, but does not by itself
incorporate all factors required for fire hazard or fire risk
1.1 These test methods evaluate the enclosure materials and
assessment of the materials, products, or assemblies under
the grease duct enclosure systems using the following test
actual fire conditions.
methods: noncombustibility, fire resistance, durability, internal
fire, and fire-engulfment with a through-penetration fire stop.
1.6 These test methods do not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.2 These test methods prescribe a standardized fire expo-
responsibility of the user of these test methods to establish
sure for comparing the test results of the enclosure materials
appropriate safety and health practices and to determine the
andgreaseductenclosuresystems.Theresultsofthesetestsare
applicability of regulatory limitations prior to use.
one factor in assessing predicted fire performance of grease
duct enclosure systems. Using these test results to predict the
2. Referenced Documents
performance of actual grease duct enclosure systems requires
the evaluation of test conditions. 2.1 ASTM Standards:
C518 Test Method for Steady-State Thermal Transmission
1.3 The values stated in inch-pound units are to be regarded
Properties by Means of the Heat Flow Meter Apparatus
as standard. The values given in parentheses are mathematical
C569 Test Method for Indentation Hardness of Preformed
conversions to SI units that are provided for information only
Thermal Insulations (Withdrawn 1988)
and are not considered standard.
E84 Test Method for Surface Burning Characteristics of
1.4 The text of these test methods references notes and
Building Materials
footnotes which provide explanatory material. These notes and
E119 Test Methods for Fire Tests of Building Construction
and Materials
This test method is under the jurisdiction of ASTM Committee E05 on Fire
Standards and is the direct responsibility of Subcommittee E05.11 on Fire
Resistance. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2013. Published August 2013. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approvedin2004.Lastpreviouseditionapprovedin2004asE2336–04(2009).DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E2336-04R13. the ASTM website.
2 4
ICC Evaluation Service, Inc. (ICBO Evaluation Service, Inc.) 5360 Workman The last approved version of this historical standard is referenced on
Mill Road, Whittier, CA 90601-2298 www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2336 − 04 (2013)
E136 Test Method for Behavior of Materials in a Vertical 4.1.1 A noncombustibilty test, Test Method E136, demon-
Tube Furnace at 750°C strates the enclosure material’s ability to resist combustion at a
E176 Terminology of Fire Standards standardized temperature and duration.
E631 Terminology of Building Constructions 4.1.2 A fire resistance test, Test Methods E119, illustrates
E814 Test Method for Fire Tests of Penetration Firestop
the ability of the enclosure material to resist the effects of fire
Systems when applied in a vertical application.
4.1.3 A durability test intended to simulate the effects of
2.2 Other Documents:
long-term exposure of typical in-service conditions on the
UL 385 Standard for Play Pipes for Water Supply Testing in
thermal transmission qualities of the enclosure materials when
Fire-Protection Service
subjected to a modified version of Test Method C518.
4.1.4 An internal fire test uses two standardized fire expo-
3. Terminology
sures occurring inside the grease duct. Both tests illustrate the
3.1 Definitions:For the purpose of this fire test response
enclosure material’s ability to resist thermal transmission of
standard, the definitions given in Terminologies E176 and
heat to the unexposed side in a horizontal application. The first
E631, together with the following, shall apply:
standardized fire exposure is intended to simulate long term
3.1.1 enclosure material, n—the product applied to the
exposure of the enclosure material to a standardized service
grease duct to provide fire resistance.
condition.The second standardized fire exposure is intended to
3.1.2 fire-separating element, n—floors, walls, and parti-
simulate a standardized grease fire.
tions having a period of fire resistance determined in accor-
4.1.5 A fire-engulfment test uses a standardized fire
dance with fire resistance test methods such as Test Methods
exposure, the time temperature curve ofTest Methods E119,to
E119.
simulate a fire occurring on the outside of the grease duct, and
demonstrates the ability of the grease duct enclosure system to
3.1.3 fire side, adj—the face of the test assembly or test
specimen exposed to the heat or flame or both of the test remain intact without a through opening. The fire-engulfment
test also tests the fastening methods used to secure the
apparatus.
enclosure material to the grease duct and the supporting
3.1.4 grease duct (also known as kitchen exhaust grease
system. The fire-engulfment test also provides a means to test
duct), n—a tube or conduit utilized for conveying air.
a through-penetration fire stop to determine its compatibility
3.1.4.1 Discussion—It is usually equipped with an access
with the grease duct enclosure system.
opening for cleaning the orifice.
3.1.5 grease duct enclosure system, n—consists of the
5. Significance and Use
grease duct, an enclosure material(s), a support and fastening
5.1 These test methods are intended to evaluate the ability
system, and an access opening for cleaning the grease duct.
of the grease duct enclosure system to do the following:
3.1.6 orifice, n—the continuous hollow area or opening
5.1.1 Resist the effects of a standardized fire exposure,
within the grease duct or combustion chamber.
5.1.2 Retain its integrity, or
3.1.7 supporting construction, n—the arrangement of build-
5.1.3 Exhibit both properties dependent upon the type of
ing sections forming the fire-separating elements into which
test assembly involved during a predetermined test exposure.
the grease duct enclosure system is installed.
5.2 These test methods provide for the following measure-
3.1.8 test assembly, n—the complete assembly composed of
ments and evaluations where applicable:
a test specimen(s) together with its supporting construction.
5.2.1 Capability of the enclosure material to resist flaming
3.1.9 test specimen, n—a material, product, or assemblage
(combustion) when exposed to 1382°F (750°C).
of a specific design, composition, density, and dimensions.
5.2.2 Loadbearing ability of the tested support system and
3.1.9.1 Discussion—the enclosure material or the grease
fastening system to carry the load of the grease duct enclosure
duct enclosure system are examples of test specimens.
system during a standardized fire-engulfment test.
3.1.10 unexposed side, n—the face or part not directly
5.2.3 Ability of a fire stop to meet the requirements of Test
exposed to the heat or flame or both of the test apparatus.
Method E814 when used with a grease duct enclosure system.
3.1.11 unexposed surface thermocouple, n—temperature- 5.2.4 Ability of the enclosure material to resist the passage
measuring device placed on the unexposed side. of flames and hot gases during a standardized fire resistance
test and a standardized internal fire test.
4. Summary of Test Method 5.2.5 Transmission of heat through the grease duct and the
enclosure material(s) during a standardized fire resistance test
4.1 Representative test specimens of the enclosure material
and a standardized internal fire test.
or the grease duct enclosure system are subjected to the
5.2.6 Ability of the grease duct enclosure system to resist
following tests. These test methods describe the following test
the passage of water during a standardized hose stream test.
sequence and procedures:
5.2.7 Comparativemeasurementoftemperatureagingofthe
enclosure material(s) when subjected to standardized cyclic
thermal transmissions.
Available from Underwriters Laboratories (UL), Corporate Progress, 333
Pfingsten Rd., Northbrook, IL 60062. 5.3 These test methods do not provide the following:
E2336 − 04 (2013)
5.3.1 Full information as to performance of the enclosure E119. A vertical furnace with a test frame is shown in Fig. 2
material or the grease duct enclosure system constructed with and a horizontal furnace is shown in Fig. 3.
components, densities, or dimensions other than those tested.
6.4 Furnace Thermocouples:
5.3.2 Evaluation of the degree by which the enclosure
6.4.1 The E119 furnace thermocouples shall:
material or grease duct enclosure system contributes to the fire
6.4.1.1 Be protected by sealed porcelain tubes having a
hazard by generation of smoke, toxic gases, or other products
3 1
nominal ⁄4-in. (19-mm) outside diameter and ⁄8-in. (3-mm)
of combustion.
wall thickness, or, as an alternative, in the case of base metal
5.3.3 Measurement of the degree of control or limitation of
thermocouples, protected by a standard ⁄2-in. (13-mm) diam-
the passage of smoke or products of combustion through the
eter wrought steel or wrought iron pipe of standard weight, and
grease duct enclosure system.
6.4.1.2 Have a time constant between the range of 5.0 to 7.2
5.3.4 Measurement of flame spread over the surface of the
min while encased in the tubes described in 6.4.1.1.
grease duct enclosure system.
6.4.2 Other types of E119 protection tubes or pyrometers
shall be used only when they give the same indications under
NOTE 2—The information in 5.3.2-5.3.4 is usually determined by other
suitable test methods. For example, 5.3.4 is typically determined using test conditions as those of 6.4.1.2 within the limit of accuracy
Test Method E84.
that applies for furnace-temperature measurements.
5.4 Inthesetestmethods,thetestspecimensaresubjectedto
NOTE 4—Atypical thermocouple assembly meeting these time constant
one or more specific tests under laboratory conditions. When
requirements is fabricated by fusion-welding the twisted ends of No. 18
gage Chromel-Alumel wires, mounting the leads in porcelain insulators
different test conditions are substituted or the end-use condi-
and inserting the assembly so the thermocouple bead is approximately 0.5
tions are changed, it is not always possible by, or from, these
in. (25 mm) from the sealed end of the standard weight nominal ⁄2-in.
testmethodstopredictchangestothecharacteristicsmeasured. 6
(25-mm) iron, steel, or Inconel pipe. The time constant for this and for
Therefore,theresultsoftheselaboratorytestsarevalidonlyfor
several other thermocouple assemblies was measured in 1976. Another
the exposure conditions described in these test methods. option is to calculate the time constant from knowledge of its physical and
thermal properties.
5.5 Various test methods in these test methods require a test
6.5 Pressure-sensing Probes—Where applicable, tolerances
specimen to be exposed to a standard fire that is controlled to
are 65 % of dimensions shown in Fig. 4 or Fig. 5.
achieve specified temperatures throughout a specified time
6.5.1 The pressure-sensing probes shall be either aT-shaped
period.The fire-engulfment and vertical fire resistance tests are
sensor as shown in Fig. 4, or a tube sensor as shown in Fig. 5
followed by the application of a standardized hose stream test.
These test methods provide a relative measure of the fire-test-
6.6 Unexposed Surface Thermocouples:
response of comparable enclosure materials and grease duct
6.6.1 The unexposed surface thermocouple wires, which
enclosure systems under these exposure conditions. The fire
shall be covered by the thermocouple pads described in 6.7
exposure is not representative of all fire conditions because
during testing, shall not be heavier than No. 18 B and S gage
conditions vary with changes in the amount, nature and
(0.040 in.) (1.02 mm), and shall be electrically insulated with
distribution of fire loading, ventilation, compartment size and
heat-resistant and moisture-resistant coatings.
configuration,andheatsinkcharacteristicsofthecompartment.
6.7 Thermocouple Pads:
Variation from the test conditions or test specimen
6.7.1 The thermocouple pads used to cover each thermo-
construction, such as size, materials, method of assembly, also
couple on the unexposed side of the test specimen or test
affects the fire-test-response. For these reasons, evaluation of
assembly shall be made of either asbestos or refractory fiber
the variation is required for application to construction in the
materials. All thermocouple pads shall be
...
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