ASTM F1958/F1958M-99(2010)
(Test Method)Standard Test Method for Determining the Ignitability of Non-flame-Resistant Materials for Clothing by Electric Arc Exposure Method Using Mannequins
Standard Test Method for Determining the Ignitability of Non-flame-Resistant Materials for Clothing by Electric Arc Exposure Method Using Mannequins
SIGNIFICANCE AND USE
This test method determines the ignitability of materials in single or multiple layers.
Material performance shall be determined from the ignitability of the specimen(s) and shall be reported as a probability of ignition at various incident energy levels.
Materials which meet the flame resistance requirements of Specification F1506 do not require testing by this test method unless the mechanism of passing Specification F1506 involves melting and escape from the flame source (for example, coated fabrics, certain rainwear fabrics).
This test method maintains the specimen in a static, vertical position and does not involve movement except that resulting from the exposure.
This test method specifies a standard set of exposure conditions. Different exposure conditions may produce different results. In addition to the standard set of exposure conditions, other conditions representative of the expected hazard may be used.SCOPE
1.1 This test method is used to identify materials that are ignitable and that can continue to burn when exposed to an electric arc, and determines (a) the incident exposure energy that causes ignition, and (b) the probability of ignition.
1.2 The specimens tested in this test method are materials fabricated in the form of shirts.
1.3 This test method shall be used to measure and describe the properties of materials, products, or assemblies in response to convective and radiant energy generated by an electric arc under controlled laboratory conditions.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.5 This standard shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
1.6 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.7 For specific precautions, see Section 7.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F1958/F1958M −99(Reapproved2010)
StandardTest Method for
Determining the Ignitability of Non-flame-Resistant Materials
for Clothing by Electric Arc Exposure Method Using
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Mannequins
ThisstandardisissuedunderthefixeddesignationF1958/F1958M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 2. Referenced Documents
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1.1 This test method is used to identify materials that are 2.1 ASTM Standards:
ignitable and that can continue to burn when exposed to an D123 Terminology Relating to Textiles
electric arc, and determines (a) the incident exposure energy D4391 Terminology Relating to The Burning Behavior of
that causes ignition, and (b) the probability of ignition. Textiles
F1494 Terminology Relating to Protective Clothing
1.2 The specimens tested in this test method are materials
F1506 Performance Specification for Flame Resistant and
fabricated in the form of shirts.
Arc Rated Textile Materials for Wearing Apparel for Use
1.3 This test method shall be used to measure and describe
by ElectricalWorkers Exposed to Momentary ElectricArc
the properties of materials, products, or assemblies in response
and Related Thermal Hazards
to convective and radiant energy generated by an electric arc
F1959/F1959M TestMethodforDeterminingtheArcRating
under controlled laboratory conditions.
of Materials for Clothing
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1.4 The values stated in either SI units or inch-pound units 2.2 ANSI/IEEE Standards:
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Standard Dictionary of Electrical and Electronics Terms
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
3. Terminology
system shall be used independently of the other. Combining
3.1 Definitions:
values from the two systems may result in non-conformance
with the standard. 3.1.1 See also Terminology D4391.
3.1.2 arc duration, n—time duration of the arc, s.
1.5 This standard shall not be used to describe or appraise
3.1.3 arc energy, vi dt, n—sum of the instantaneous arc
the fire hazard or fire risk of materials, products, or assemblies
voltage values multiplied by the instantaneous arc current
under actual fire conditions. However, results of this test may
values multiplied by the incremental time values during the
be used as elements of a fire assessment which takes into
arc, J.
account all of the factors which are pertinent to an assessment
of the fire hazard of a particular end use.
3.1.4 arc gap, n—distance between the arc electrodes, in.
1.6 This standard does not purport to address all of the
3.1.5 arc voltage, n—voltage across the gap caused by the
safety concerns, if any, associated with its use. It is the
current flowing through the resistance created by the arc gap,
responsibility of the user of this standard to establish appro-
V.
priate safety and health practices and determine the applica-
3.1.6 asymmetrical arc current, n—the total arc current
bility of regulatory limitations prior to use.
produced during closure; it includes a direct component and a
1.7 For specific precautions, see Section 7.
symmetrical component, A.
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This test method is under the jurisdiction of ASTM Committee F18 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Electrical Protective Equipment for Workers and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee F18.65 on Wearing Apparel. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2010. Published November 2010. Originally the ASTM website.
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approved in 1997 as PS 57 – 97. Last previous edition approved in 2005 as Available from the Institute of Electrical and Electronic Engineers, Inc., 345 E.
F1958/F1958M-99(2005). DOI: 10.1520/F1958_F1958M-99R10. 47th St., New York, NY 10017.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1958/F1958M−99(Reapproved2010)
3.1.7 blowout, n—the extinguishing of the arc caused by a 5.1.1 Material performance shall be determined from the
magnetic field. ignitability of the specimen(s) and shall be reported as a
probability of ignition at various incident energy levels.
3.1.8 closure, n—point on supply current wave form where
5.1.2 Materials which meet the flame resistance require-
arc is initiated.
ments of Specification F1506 do not require testing by this test
3.1.9 delta peak temperature, n—difference between the
method unless the mechanism of passing Specification F1506
maximum temperature and th
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