ASTM F2676/F2676M-22

Standard Specification for Arc Protective Blankets

SCOPE
1.1 This product specification is used to determine the ability of the arc protective blankets to withstand the effects of arc flash and arc blast in a configuration in which the blanket is hung or anchored near energized equipment. Specifically, the imbedded test method is used to determine and specify the arc protective blanket’s (1) resistance to breakopen, (2) mechanical strength, and (3) ability to self-extinguish flames following a controlled arc exposure.  
1.2 The products covered by this specification are labeled with a performance level for arc protective blankets in terms of: maximum arc current level expressed in kA and Breakopen Threshold Performance (BTP) expressed as the product of arc current in kA and arc duration in number of cycles to cause breakopen (kA*cycles). Cycles are on the basis of 60 Hz.  
1.3 Blanket test specimens used in this specification are test size blankets of 152 ± 5 cm [60 ± 2 in.] by 122 ± 5 cm [48 ± 2 in.]. The test specimen size is for testing purposes only. Commercially available arc protective blankets either larger or smaller than the test specimen size are covered by this specification.  
1.4 The arc protective blankets described in this specification are made of flame-resistant materials and are available in varying sizes and configurations based on the application.  
1.5 The specification is used to measure and describe the properties of materials, products, or assemblies in response to incident thermal (convective and radiant) and pressure energies generated by an electric arc under controlled laboratory conditions.  
1.6 The values stated in SI units shall be regarded as standard except as noted. The values stated in each system may not be exact equivalents; therefore, alternate systems must be used independently of the other. Combining values from the systems described in the text may result in nonconformance with the method.  
1.7 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.  
1.8 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. For specific precautions, see Section 9.  
1.9 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.

General Information

• Status: Published
• Publication Date: 30-Nov-2022
• ICS: 13.340.99 - Other protective equipment
• Technical Committee: F18 - Electrical Protective Equipment for Workers
• Drafting Committee: F18.65 - Wearing Apparel

Standards Content (Sample)

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: F2676/F2676M − 22
Standard Specification for
1
Arc Protective Blankets
This standard is issued under the fixed designation F2676/F2676M; 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 1.7 This standard shall not be used to describe or appraise
the fire hazard or fire risk of materials, products, or assemblies
1.1 This product specification is used to determine the
under actual fire conditions. However, results of this test may
ability of the arc protective blankets to withstand the effects of
be used as elements of a fire assessment, which takes into
arc flash and arc blast in a configuration in which the blanket
account all of the factors, which are pertinent to an assessment
is hung or anchored near energized equipment. Specifically, the
of the fire hazard of a particular end use.
imbedded test method is used to determine and specify the arc
1.8 This standard does not purport to address all of the
protective blanket’s (1) resistance to breakopen, (2) mechanical
safety concerns, if any, associated with its use. It is the
strength, and (3) ability to self-extinguish flames following a
responsibility of the user of this standard to establish appro-
controlled arc exposure.
priate safety, health, and environmental practices and deter-
1.2 The products covered by this specification are labeled
mine the applicability of regulatory limitations prior to use.
with a performance level for arc protective blankets in terms
For specific precautions, see Section 9.
of: maximum arc current level expressed in kA and Breakopen
1.9 This international standard was developed in accor-
Threshold Performance (BTP) expressed as the product of arc
dance with internationally recognized principles on standard-
current in kA and arc duration in number of cycles to cause
ization established in the Decision on Principles for the
breakopen (kA*cycles). Cycles are on the basis of 60 Hz.
Development of International Standards, Guides and Recom-
1.3 Blanket test specimens used in this specification are test
mendations issued by the World Trade Organization Technical
size blankets of 152 6 5 cm [60 6 2 in.] by 122 6 5 cm [48
Barriers to Trade (TBT) Committee.
6 2 in.]. The test specimen size is for testing purposes only.
2. Referenced Documents
Commercially available arc protective blankets either larger or
2
smaller than the test specimen size are covered by this
2.1 ASTM Standards:
specification.
D123 Terminology Relating to Textiles
D1682 Test Method for Breaking Load and Elongation of
1.4 The arc protective blankets described in this specifica-
3
Textile Fabric (Withdrawn 1992)
tion are made of flame-resistant materials and are available in
D4391 Terminology Relating to The Burning Behavior of
varying sizes and configurations based on the application.
Textiles
1.5 The specification is used to measure and describe the
D6413 Test Method for Flame Resistance of Textiles (Ver-
properties of materials, products, or assemblies in response to
tical Test)
incident thermal (convective and radiant) and pressure energies
F819 Terminology Relating to Electrical Protective Equip-
generated by an electric arc under controlled laboratory con-
ment for Workers
ditions.
F1506 Performance Specification for Flame Resistant and
1.6 The values stated in SI units shall be regarded as
Electric Arc Rated Protective Clothing Worn by Workers
standard except as noted. The values stated in each system may
Exposed to Flames and Electric Arcs
not be exact equivalents; therefore, alternate systems must be
F1959 Test Method for Determining the Arc Rating of
used independently of the other. Combining values from the
Materials for Clothing
systems described in the text may result in nonconformance
F2302 Performance Specification for Labeling Protective
with the method.
Clothing Which Provides Resistance to Incidental Expo-
sures to Heat or Open Flame
1 2
This specification 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 [e-mail]. 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 Dec. 1, 2022. Published February 2023. Originally the ASTM website.
3
approved in 2009. Last previous edition approved
...

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: F2676 − 19 F2676/F2676M − 22
Standard Test Method Specification for
Determining the Protective Performance of an Arc
Protective Blanket for Electric Arc HazardsArc Protective
1
Blankets
This standard is issued under the fixed designation F2676;F2676/F2676M; 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 is used to evaluate the ability of the arc protective blankets to withstand the effects of arc flash and arc blast
in a configuration in which the blanket is hung or anchored near energized equipment. Specifically, this test method is used to
determine the arc protective blanket’s (1) resistance to breakopen, (2) mechanical strength, and (3) ability to self-extinguish flames
following a controlled arc exposure.
1.2 This method is used to determine the performance of arc protective blankets in terms of: maximum arc current level expressed
in kA and BTP (BTP) expressed as the product of arc current in kA and arc duration in number of cycles to cause breakopen
(kA*cycles). Cycles are on the basis of 60 Hz.
1.3 Blanket test specimens used in this test method are test size blankets of 152 6 5 cm (60 6 2 in.) by 122 6 5 cm (48 6 2
in.). The test specimen size is for testing purposes only. Commercially available arc protective blankets either larger or smaller than
the test specimen size are covered by this standard.
1.4 The arc protective blankets described in this test method are made of flame-resistant materials and are available in varying
sizes and configurations based on the application.
1.5 This test method shall be used to measure and describe the properties of materials, products, or assemblies in response to
incident thermal (convective and radiant) and pressure energies generated by an electric arc under controlled laboratory conditions.
1.6 The values stated in SI units shall be regarded as standard. The values given in parentheses are mathematical conversion to
inch-pound or other units commonly used for arc testing.
1.7 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.
1.8 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. For specific precautions, see Section 7.
1
This test method specification is under the jurisdiction of ASTM Committee F18 on Electrical Protective Equipment for Workers and is the direct responsibility of
Subcommittee F18.65 on Wearing Apparel.
Current edition approved March 1, 2019Dec. 1, 2022. Published April 2019February 2023. Originally approved in 2009. Last previous edition approved in 20162019 as
F2676 - 16.F2676 – 19. DOI: 10.1520/F2676-19.10.1520/F2676_F2676M-22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F2676/F2676M − 22
1.9 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:
D4391 Terminology Relating to The Burning Behavior of Textiles
F819 Terminology Relating to Electrical Protective Equipment for Workers
3. Terminology
3.1 Definitions:
3.1.1 arc, n—conductive path in air for the electric current caused by ionization of air between two electrodes.
3.1.2 arc induced fragmentation, n—molten metal fragments or other fragments emitted from an electric arc.
3.1.3 arc protective blanket, n—a flat assembly of fabric(s) with locations for attachment used to protect workers from the effects
of arc flash and arc blast.
3.1.4 arc protective blanket maximum arc current I ,n—maximum value of R
...