BS_8468-8-2020.pdf

BS8468-8:2020Respiratory protective devices for useagainst chemical,biological,radiologicaland nuclear(CBRN)agentsPart 8:Test methodsBRITISH STANDARDBS8468-8:2020ContentsPageForewordi1 Scope2 Normative references3 Terms and definitions14 Classification of CBRN types4.1CBRN124.2 CBRN24.3CBRN34.4Escape CBRN3Prerequisites6 Visual inspection7Test method for chemical agent permeation and penetration resistance against distilled sulfurmustard(HD)and sarin(GB)47.1 General47.2 Pass/Fail criteria4Table 1-Liquid and vapour test requirements for CBRN RPD47.3 Materials7.4 ApparatusFigure 1-Typical test equipment set-up for GB and HD permeation/penetration test17.5 Preparation97.6 Chemical agent test methods10Table 2-Airflow conditions for CBRN chemical agent test11Table 3-Timing sequence for CBRN RPD permeation/penetration tests148 Test report15Summary of pagesThis document comprises a front cover,and inside front cover,pages i to iv,pages 1 to 15,an inside back cover anda back cover.THE BRITISH STANDARDS INSTITUTION 2020-ALL RIGHTS RESERVED IBS8468-8:2020BRITISH 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,Respiratory protection.A list of organizations represented on this committee can be obtained onrequest to its secretary.Relationship with other publicationsBS 8468 is published in the following parts:Part 1:Positive pressure,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 incorporating 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;Part 7:Closed-circuit breathing apparatus-Specification;Part8:Test methods.Information about this documentBS 8468-8 provides the test methods for visual inspection,and chemical agent permeation andpenetration resistance against distilled sulfur mustard(HD)and sarin(GB)and is intended to be readin conjunction with the relevant parts of BS 8468.This publication can be withdrawn,revised,partially 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 publication.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.Presentational conventionsThe provisions of this standard are presented in roman(i.e.upright)type.Its methods are expressedas a set of instructions,a description,or in sentences in which the principal auxiliary verb is shall.Commentary,explanation and general informative material is presented in smaller italic type,and doesnot constitute a normative element.II THE BRITISH STANDARDS INSTITUTION 2020-ALL RIGHTS RESERVED