ASTM_F_1764_-_97_2018.pdf

Designation:F176497(Reapproved 2018)Standard Guide forSelection of Hardline Communication Systems for Confined-Space Rescue1This standard is issued under the fixed designation F1764;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 covers recommended criteria for the selec-tion of hardwire communication systems for use in permit-required confined-space rescue operations.1.2 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.1.3 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:2F1490 Terminology Relating to Search and Rescue(With-drawn 2011)32.2 Federal Standards:29 Code of Federal Regulations 1910.146 Permit RequiredConfined Spaces429 Code of Federal Regulations 1910.7 Definition and Re-quirements for a National Recognized Testing Laboratory42.3 National Code:National Electrical Code(NEC)/NFPA 7053.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 confined space rescuerescue operations withinspaces that meet the definition of“permit-required confinedspace”in Fed.Std.29 CFR 1910.146.3.1.2 hardline communication systemany communicationsystem where all users are connected to the system by ahardline or wire.4.Significance and Use4.1 Because of the many unique requirements of permit-required confined space rescue operations and the specificconstruction and composition of some confined spaces,hard-line communications systems may be the only type that willmeet the requirements for working within these spaces.Someof these requirements are set forth in Federal Regulation andsome by safe operating procedures developed for working inconfined spaces by industry.4.2 This guide is not meant to preclude the use of othertypes of communication systems in confined-space rescue.5.System Requirements5.1 System SafetyThe system must be safe for use in theatmosphere,or potential atmosphere,within the space.NOTE1See Annex A1.5.2 The system must have continuous,hands-free voicecommunications capability.NOTE2See X1.1.5.3 The system must be dedicated and private so operationscannot be interfered with by outsiders not involved with therescue.5.4 The system shall not affect the readings of other safetyequipment(that is,gas detectors).5.5 Systems that are battery powered must have a low-battery warning or a backup power source that provides aminimum of 30 min before communications are lost.5.6 The system must accommodate a minimum of threeusers.NOTE3See X1.2.1This guide is under the jurisdiction of ASTM Committee F32 on Search andRescue and is the direct responsibility of Subcommittee F32.01 on Equipment,Testing,and Maintenance.Current edition approved Nov.1,2018.Published November 2018.Originallyapproved in 1997.Last previous edition approved in 2012 as F1764 97(2012).DOI:10.1520/F1764-97R18.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Occupational Safety and Health Administration(OSHA),200Constitution Ave.,NW,Washington,DC 20210,http:/www.osha.gov.5Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.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 5.7 The system should allow for communication between allentrants as well as with the attendant.NOTE4See X1.3.5.8 The system must work in conjunction with the personalprotective equipment(PPE)necessary to work in the environ-ment within the space.NOTE5See X1.4.5.9 The system must be impervious to the chemicals withinthe space.6.Keywords6.1 confined space;hardlineANNEX(Mandatory Information)A1.INHERENT SAFETYA1.1 Equipment that requires electrical power to oper