1、Designation:F270417aStandard Specification forAir-Fed Protective Ensembles1This standard is issued under the fixed designation F2704;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 in
2、dicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification establishes design,performance,classification,documentation,labeling,and certification re-quirements for protective ensembles that deliver air t
3、o thewearer by means of an air line or powered air purifyingrespirator(PAPR).1.2 As a prerequisite to this specification,regulations withinTitle 42 Federal Code of Regulations,Part 84 are used toestablish the conformance of the air-fed protective ensemble torespiratory protection requirements.1.3 Th
4、is specification addresses protective ensembles usedfor environments involving chemical,biological,andradiological/nuclear particulate hazards.1.4 This specification sets specific criteria for air-fed pro-tective ensembles used to prevent exposure to substances suchas,but not limited to,chemical haz
5、ards,infectious microor-ganisms requiring Biosafety Level 4(BLS4)protection,andenvironments where it is possible radiological or nuclearparticulates will be found.1.5 This specification is further used for classification of theprotective ensemble as limited use or multiple use.1.6 The values stated
6、in SI units or in other units shall beregarded separately as standard.The values stated in eachsystem must be used independently of the other,withoutcombining values in any way.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibil
7、ity 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.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization est
8、ablished 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:2D751 Test Methods for Coated FabricsD1776 Practice for Conditioni
9、ng and Testing TextilesD2582 Test Method for Puncture-Propagation Tear Resis-tance of Plastic Film and Thin SheetingD3787 Test Method for Bursting Strength of TextilesConstant-Rate-of-Traverse(CRT)Ball Burst TestD3884 Guide for Abrasion Resistance of Textile Fabrics(Rotary Platform,Double-Head Metho
10、d)D4157 Test Method for Abrasion Resistance of TextileFabrics(Oscillatory Cylinder Method)D5034 Test Method for Breaking Strength and Elongation ofTextile Fabrics(Grab Test)D5151 Test Method for Detection of Holes in MedicalGlovesD5587 Test Method for Tearing Strength of Fabrics byTrapezoid Procedur
11、eF392 Test Method for Flex Durability of Flexible BarrierMaterialsF739 Test Method for Permeation of Liquids and Gasesthrough Protective Clothing Materials under Conditions ofContinuous ContactF903 Test Method for Resistance of Materials Used inProtective Clothing to Penetration by LiquidsF1052 Test
12、 Method for Pressure Testing Vapor ProtectiveSuitsF1154 Practices for Qualitatively Evaluating the Comfort,Fit,Function,and Durability of Protective Ensembles andEnsemble ComponentsF1342 Test Method for Protective Clothing Material Resis-tance to PunctureF1359 Test Method for Liquid Penetration Resi
13、stance ofProtective Clothing or Protective Ensembles Under aShower Spray While on a Mannequin1This specification is under the jurisdiction of ASTM Committee F23 onPersonal Protective Clothing and Equipment and is the direct responsibility ofSubcommittee F23.30 on Chemicals.Current edition approved N
14、ov.1,2017.Published November 2017.Originallyapproved in 2010.Last previous edition approved in 2017 as F2704 17.DOI:10.1520/F2704-17A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informat
15、ion,refer to the standards Document Summary page onthe ASTM website.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 establ
16、ished 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 F1494 Terminology Relating to Protective ClothingF1671 Test Method for Resistance of Materials Used inProtective Clothing to Penetration by Blood-Borne Patho-gens Using Phi-X174 Bacteriophage Penetration as a TestSystemF1790 Test Method for Measuring Cut Resistance of Mate-rials Used in Protective Clothing