BS 8468-7-2012 Respiratory protective devices for use against chemical biological radiological and nuclear (CBRN) agents Closed-circuit breathing apparatus Specification《防化学 生物 放射和.pdf
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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 8468-7:2012Respiratory protectivedevices for use againstchemical, biological,radiological and nuclear(CBRN) agentsPart 7: Closed-circuit breathingapparatus SpecificationPublis
2、hing and copyright informationThe BSI copyright notice displayed in this document indicates when the documentwas last issued. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 75421 0ICS 13.340.30The following BSI references relate to the work on this standa
3、rd:Committee reference PH/4Draft for comment 11/30246792 DCPublication historyFirst edition, April 2012Amendments issued since publicationDate Text affectedBS 8468-7:2012 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative references 13 Terms and definitions 14 Description 15 Designation 26 Requ
4、irements 27 Marking 38 Information supplied by the manufacturer 3AnnexesAnnex A (normative) Test method for chemical agent permeation andpenetration resistance against distilled sulfur mustard (HD) and sarin (GB) 4Annex B (informative) Relationship between this British Standard and the basicsafety r
5、equirements of EU Directive 89/686/EEC Personal ProtectiveEquipment 9Bibliography 11List of figuresFigure A.1 HD agent droplet placement for CCBA facepiece 6Figure A.2 HD agent droplet placement between facepiece and cylinderthread 7List of tablesTable 1 Maximum acceptable levels of permeation and p
6、enetration 3Table A.1 Airflow characteristics for chemical agent permeation andpenetration resistance test method (HD) 8Table A.2 Airflow characteristics for chemical agent permeation andpenetration resistance test method (GB) 8Table B.1 Essential requirements for PPE Comparison between the PPEDirec
7、tive, Annex II and BS 8468-7 10Summary of pagesThis document comprises a front cover, an inside front cover, pages i to ii,pages 1 to 12, an inside back cover and a back cover.BRITISH STANDARD BS 8468-7:2012 The British Standards Institution 2012 iForewordPublishing informationThis is published by B
8、SI Standards Limited, under licence from The BritishStandards Institution, and came into effect on 30 April 2012. It was prepared byTechnical Committee PH/4, Respiratory protection. A list of organizationsrepresented on this committee can be obtained on request to its secretary.Relationship with oth
9、er publicationsBS 8468 is issued in nine 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 apparatusincor
10、porating a hood for escape Specification; Part 3.2: Air-purifying devices incorporating a hood for escape Specification; Part 4: Powered air-purifying respirators Specification; Part 5: Dual-mode apparatus Specification; Part 6.1: Positive-pressure compressed airline equipment Specification; Part 6.
11、2: Constant flow compressed airline equipment Specification; Part 7: Closed-circuit breathing apparatus Specification.NOTE This standard may be used in conjunction with BS 8467, which givescategorization, requirements and test methods for personal protective ensemblesagainst CBRN agents.Information
12、about this documentIncreased threat to civilians, emergency and support agencies from chemical,biological, radiological and nuclear (CBRN) agents has led to a need for suitablepersonal protective equipment (PPE). The lack of coverage of combined CBRNprotection in existing British Standards on PPE ha
13、s recently been identified. Thisstandard has been prepared to give requirements for such PPE.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, ex
14、planation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Com
15、pliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARDBS 8468-7:2012ii The British Standards Institution 20121 ScopeThis British Standard specifies requirements for closed-circuit breathingapparatus (CCBA) intended to be used during firefighting, rescue, evacua
16、tion,escape, hazard containment and decontamination, and similar activities byemergency first responders (e.g. fire, ambulance, police, and associated civilianagencies and workers) in areas containing and contaminated by chemical,biological, radiological and nuclear (CBRN) agents.NOTE CCBA conformin
17、g to this standard might be suitable for use in situationsother than those involving the specific CBRN agents identified in the standard.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable for its application. For dated
18、 references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.BS EN 132, Respiratory protective devices Definitions of terms and pictogramsBS EN 134, Respiratory protective devices Nomenclature of componentsBS EN 1
19、36:1998, Respiratory protective devices Full face masks Requirements,testing, markingBS EN 137:2006, Respiratory protective devices Self-contained open-circuitcompressed air breathing apparatus with full face mask Requirements, testing,markingBS EN 145:1998, Respiratory protective devices Self-conta
20、ined closed-circuitbreathing apparatus compressed oxygen or compressed oxygen-nitrogen type Requirements, testing, markingBS EN 13274-1:2001, Respiratory protective devices Methods of test Part 1:Determination of inward leakage and total inward leakageBS EN 14593-1:2005, Respiratory protective devic
21、es Compressed air linebreathing apparatus with demand valve Part 1: Apparatus with a full mask Requirements, testing, marking3 Terms and definitionsFor the purposes of this part of BS 8468, the terms and definitions given inBS EN 132 and BS EN 134 and the following apply.3.1 full face masktight fitt
22、ing facepiece covering mouth, nose, eyes and chin3.2 closed-circuit breathing apparatusCCBAself-contained breathing apparatus which removes carbon dioxide from theexhaled air and adds oxygen or oxygen/nitrogen to the inhaled air for breathingby the wearer and is independent of the ambient atmosphere
23、4 DescriptionSelf-contained, closed-circuit breathing apparatus is designed and constructed tosupply the wearer with breathable air via an inhalation hose, connected to thefacepiece by a breathing connector. The exhaled air passes from the facepiecevia the breathing connector and exhalation hose bac
24、k to the CCBA.BRITISH STANDARD BS 8468-7:2012 The British Standards Institution 2012 15 DesignationTwo types of CCBA are described in this standard:a) Type 1: a device with inward leakage 0.01% suited to use in any BS 8467ensemble; andb) Type 2: a device with inward leakage 0.05% suited to use in an
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