1、BRITISH STANDARDBS8468-1:2020ContentsPageForewordii1 Scope2 Normative references13 Terms and definitions4 Requirements34.1 General4.2Preconditioning24.3 Visual inspection24.4 Inward leakage34.5Chemical agent permeation and penetration2Marking心6 Information supplied by the manufacturerFigure 1-Sulfur
2、 mustard(HD)agent droplet placement for SCBA facepiece3Figure 2-HD agent droplet placement between facepiece and cylinder thread4Bibliography5Summary of pagesThis document comprises a front cover,and inside front cover,pages i to iv,pages 1 to 5,an inside back cover and aback cover.THE BRITISH STAND
3、ARDS INSTITUTION 2020-ALL RIGHTS RESERVED IBS8468-1:2020BRITISH STANDARDForewordPublishing informationThis part of BS 8468 is published by BSI Standards Limited,under licence from The British StandardsInstitution,and came into effect on 31 August 2020.It was prepared by Technical Committee PH/4,Resp
4、iratory protection.A list of organizations represented on this committee can be obtained onrequest to its committee manager.SupersessionThis part of BS 8468 supersedes BS 8468-1:2006,which is withdrawn.Relationship with other publicationsBS 8468 is published in the following parts:Part 1:Positive pr
5、essure,self-contained,open-circuit breathing apparatus-Specification;Part 2:Negative pressure,air purifying devices with full face mask-Specification;Part 3.1:Self-contained open-circuit compressed air breathing apparatus incorporating a hood forescape-Specification;Part 3.2:Air-purifying devices in
6、corporating a hood for escape-Specification;Part 4:Powered air purifying respirators-Specification;Part 5:Combined and multi-functional apparatus Specification;Part 6.1:Positive-pressure compressed air line equipment-Specification;Part 6.2:Constant flow compressed air line equipment-Specification;Pa
7、rt 7:Closed-circuit breathing apparatus-Specification;Part8:Test methods.This standard can be used in conjunction with BS 8467,which categorizes and specifies requirementsand test methods for personal protective ensembles against CBRN agents.Information about this documentThis is a full revision of
8、the standard,and introduces the following principal changes:full face masks conforming to BS EN 136,Class 2 or Class 3 are now required;the test for permeation penetration has been moved to the new BS 8468-8;andthe terms and definitions have been updated.This publication can be withdrawn,revised,par
9、tially superseded or superseded.Informationregarding the status of this publication can be found in the Standards Catalogue on the BSI website by contacting the Customer Services team.Where websites and webpages have been cited,they are provided for ease of reference and arecorrect at the time of pu
10、blication.The location of a webpage or website,or its contents,cannotbe guaranteed.Use of this documentIt has been assumed in the preparation of this part of BS 8468 that the execution of its provisions willbe entrusted to appropriately qualified and experienced people,for whose use it has been produced.II THE BRITISH STANDARDS INSTITUTION 2020-ALL RIGHTS RESERVED
