ASTM D3806-19a
(Test Method)Standard Test Method of Small-Scale Evaluation of Fire-Retardant Paints (2-Foot Tunnel Method)
Standard Test Method of Small-Scale Evaluation of Fire-Retardant Paints (2-Foot Tunnel Method)
SIGNIFICANCE AND USE
3.1 A number of laboratory procedures are used to evaluate the effectiveness of fire-retardant and fire-resistant treatments and coatings. In general, these methods measure the three stages of fire development: (1) ignition; (2) flame spread (rate of growth of the fire); and (3) conflagration extent. While all three are of extreme importance, flame spread has been recognized as the main factor associated with testing fire-retardant coatings.
3.2 Flame spread ratings based upon Test Method E84 have acquired common acceptance by regulatory agencies, but such large-scale tests are seldom practical during the development or modification of a fire-retardant coating.
3.3 This test method provides the relative flame spread of experimental coatings using small test specimens under the conditions established in the 2-foot tunnel. By experimentally calibrating the 2-foot tunnel with similar Test Method E84-rated fire-retardant paint, results obtained by this test method can be used to screen coatings for suitability for testing in the Test Method E84 tunnel.
3.3.1 This test method is intended as an experimental tool in evaluating experimental coatings for further development. No direct correlation of results from this test method and the Test Method E84 tunnel have been made or are implied.
3.3.2 The results obtained by this test method do not in themselves act as an accurate predictor of performance in Test Method E84 and shall not be used for the purpose of certification to any class of flame spread performance.
SCOPE
1.1 This test method determines the protection a coating affords its substrate, and the comparative burning characteristics of coatings by evaluating the flame spread over the surface when ignited under controlled conditions in a small tunnel. This establishes a basis for comparing surface-burning characteristics of different coatings without specific consideration of all the end-use parameters that might affect surface-burning characteristics under actual fire conditions.
1.2 In addition to the experimental flame spread rate, the weight of panel consumed, time of afterflaming and afterglow, char dimensions and index, and height of intumescence can be measured in this test. However, a relationship should not be presumed among these measurements.
1.3 This standard is used to determine certain fire-test responses of materials, products, or assemblies to heat and flame under controlled conditions by using results obtained from fire-test response standards. The results obtained from using this standard do not by themselves constitute measures of fire hazard or fire risk.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard is 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 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3806 − 19a
Standard Test Method of
Small-Scale Evaluation of Fire-Retardant Paints (2-Foot
1
Tunnel Method)
This standard is issued under the fixed designation D3806; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This test method determines the protection a coating
1.8 This international standard was developed in accor-
affords its substrate, and the comparative burning characteris-
dance with internationally recognized principles on standard-
ticsofcoatingsbyevaluatingtheflamespreadoverthesurface
ization established in the Decision on Principles for the
when ignited under controlled conditions in a small tunnel.
Development of International Standards, Guides and Recom-
This establishes a basis for comparing surface-burning charac-
mendations issued by the World Trade Organization Technical
teristics of different coatings without specific consideration of
Barriers to Trade (TBT) Committee.
all the end-use parameters that might affect surface-burning
characteristics under actual fire conditions.
2. Referenced Documents
1.2 In addition to the experimental flame spread rate, the
2
2.1 ASTM Standards:
weight of panel consumed, time of afterflaming and afterglow,
D344Test Method for Relative Hiding Power of Paints by
char dimensions and index, and height of intumescence can be
3
the Visual Evaluation of Brushouts (Withdrawn 2018)
measured in this test. However, a relationship should not be
D1475Test Method for Density of Liquid Coatings, Inks,
presumed among these measurements.
and Related Products
1.3 This standard is used to determine certain fire-test
D2196Test Methods for Rheological Properties of Non-
responses of materials, products, or assemblies to heat and
Newtonian Materials by Rotational Viscometer
flame under controlled conditions by using results obtained
E84Test Method for Surface Burning Characteristics of
from fire-test response standards. The results obtained from
Building Materials
usingthisstandarddonotbythemselvesconstitutemeasuresof
2.2 Federal Standard:
fire hazard or fire risk.
4
Fed. Spec. TT-V-119Varnish, Spar, Phenolic Resin
1.4 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Significance and Use
only.
3.1 Anumber of laboratory procedures are used to evaluate
1.5 This standard is used to measure and describe the
the effectiveness of fire-retardant and fire-resistant treatments
response of materials, products, or assemblies to heat and
and coatings. In general, these methods measure the three
flame under controlled conditions, but does not by itself
stages of fire development: (1) ignition; (2) flame spread (rate
incorporate all factors required for fire hazard or fire risk
of growth of the fire); and (3) conflagration extent. While all
assessment of the materials, products, or assemblies under
three are of extreme importance, flame spread has been
actual fire conditions.
recognized as the main factor associated with testing fire-
1.6 Fire testing is inherently hazardous. Adequate safe-
retardant coatings.
guards for personnel and property shall be employed in
3.2 Flame spread ratings based uponTest Method E84 have
conducting these tests.
acquired common acceptance by regulatory agencies, but such
1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint Standards volume information, refer to the standard’s Document Summary page on
and Related Coatings, Materials, andApplications and is the direct responsibility of the ASTM website.
3
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials. The last approved version of this historical standard is referenced on
Current edition approved Dec. 1, 2019. Published December 2019. Originally www.astm.org.
4
approved in 1979. Last previous edition approved in 2019 as D3806–19. DOI: Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
10.1520/D3806-19A. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyr
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3806 − 19 D3806 − 19a
Standard Test Method of
Small-Scale Evaluation of Fire-Retardant Paints (2-Foot
1
Tunnel Method)
This standard is issued under the fixed designation D3806; 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.
1. Scope
1.1 This test method determines the protection a coating affords its substrate, and the comparative burning characteristics of
coatings by evaluating the flame spread over the surface when ignited under controlled conditions in a small tunnel. This
establishes a basis for comparing surface-burning characteristics of different coatings without specific consideration of all the
end-use parameters that might affect surface-burning characteristics under actual fire conditions.
1.2 In addition to the experimental flame spread rate, the weight of panel consumed, time of afterflaming and afterglow, char
dimensions and index, and height of intumescence can be measured in this test. However, a relationship should not be presumed
among these measurements.
1.3 This standard is used to determine certain fire-test responses of materials, products, or assemblies to heat and flame under
controlled conditions by using results obtained from fire-test response standards. The results obtained from using this standard do
not by themselves constitute measures of fire hazard or fire risk.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard is 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 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these
tests.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
3
D344 Test Method for Relative Hiding Power of Paints by the Visual Evaluation of Brushouts (Withdrawn 2018)
D1475 Test Method for Density of Liquid Coatings, Inks, and Related Products
D2196 Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer
E84 Test Method for Surface Burning Characteristics of Building Materials
2.2 Federal Standard:
4
Fed. Spec. TT-V-119 Varnish, Spar, Phenolic Resin
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved Oct. 1, 2019Dec. 1, 2019. Published October 2019December 2019. Originally approved in 1979. Last previous edition approved in 20162019
as D3806 – 98 (2016).D3806 – 19. DOI: 10.1520/D3806-19.10.1520/D3806-19A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D3806 − 19a
3. Significance and Use
3.1 A number of laboratory procedures are used to evaluate the effectiveness of fire-retardant and fire-resistant treatments and
coatings. In general, these methods
...
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