ASTM_F_3272_-_18.pdf

Designation:F327218Standard Guide forSelection,Care,and Use of Arc Protective Blankets1This standard is issued under the fixed designation F3272;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the 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.1.Scope1.1 This guide provides information for the selection,care,and use of arc protective blankets for personnel protection.1.2 This guide covers positioning and securing arc protec-tive blankets(tested to Test Method F2676)and channeling thethermal,ballistic,and concussive forces generated by an arcflash event using arc protective blankets.1.3 This guide describes the use of the arc protective blanketto maximize its protective effectiveness to workers exposed toenergized electrical equipment where complete de-energizingof the work zone cannot be achieved or for low-risk exposureswith sufficient arc flash incident energy to warrant secondaryprotective means in the event of an arc flash.1.4 The values stated in SI units are to be regarded as thestandard.See IEEE/ASTM SI-10.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4391 Terminology Relating to The Burning Behavior ofTextilesF819 Terminology Relating to Electrical Protective Equip-ment for WorkersF2676 Test Method for Determining the Protective Perfor-mance of an Arc Protective Blanket for Electric ArcHazards2.2 IEEE/ASTM Standard:2IEEE/ASTM SI-10 American National Standard for MetricPractice2.3 NFPA Standard:3NFPA 70E-2018 Standard for Electrical Safety in the Work-place2.4 CSA Standard:4CSA Z462-2018 Workplace electrical safety2.5 OSHA Standards:529 CFR 1910.269 Occupational Safety and Health Stan-dards:Special Industries29 CFR 1926.950-969 Safety and Health Regulations forConstruction3.Terminology3.1 Definitions:3.1.1 For definitions relating to the burning behavior oftextiles,see Terminology D4391 and for definitions relating toelectrical protective equipment for workers,see TerminologyF819.3.1.2 abnormal condition,nabnormalities such as but notlimited to,oil or compound leaking from cable or joints,broken cable sheaths or joint sleeves,hot localized surfacetemperatures of cables or joints,or joints that are swollenbeyond normal tolerance are presumed to lead to or be anindication of an impending fault.3.1.3 anchoring,nmethod of physical attachment forsecuring the blanket and all attached components(straps,stanchions,other hardware,etc.)in place for the duration of theprotection level for which the blanket is rated.3.1.4 arc protective blanket,na flat assembly of fabric(s)with locations for attachments used to protect workers from theeffects of arc flash and arc blast.1This guide is under the jurisdiction of ASTM Committee F18 on ElectricalProtective Equipment for Workers and is the direct responsibility of SubcommitteeF18.65 on Wearing Apparel.Current edition approved March 1,2018.Published May 2018.Originallyapproved in 2017.Last previous edition approved in 2017 as F3272-17.DOI:10.1520/F3272-18.2For 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 onthe ASTM website.3Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.4Available from Canadian Standards Association(CSA),178 Rexdale Blvd.,Toronto,ON M9W 1R3,Canada,http:/www.csagroup.org.5Available from Occupational Safety and Health Administration(OSHA),200Constitution Ave.,NW,Washington,DC 20210,http:/www.osha.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.5 arc protective blanket maximum arc current lmax,nmaximum value of RMS arc current that blanket canwithstand without breakopen for no less than ten cycles of 60Hz.3.1.5.1 DiscussionStandard values of the maximum arc