BS 8468-7:2020 pdf free.Respiratory protective devices for use against chemical, biological, radiological and nuclear , CBRN) agents,Closed-circuit breathing apparatus一Specification.
BS 8468-7 This British Standard specifies requirements for closed-circuit breathing apparatus (CCBA) intended to be used during fire-fighting, rescue, evacuation, escape, hazard containment and decontamination,and similar activities by emergency responders (e.g. fire, ambulance, police, and associated civilian agencies and workers) in areas containing and contaminated by chemical, biological, radiological and nuclear (CBRN) agents.This British Standard is applicable to type CBRN1 and type CBRN3 devices. Type CBRN1 devices provide resistance to gaseous chemical agent permeation and penetration and protection capability against hazardous particulate matter. Type CBRN3 devices provide an enhanced level of resistance to liquid and gaseous chemical agent permeation and penetration. This British Standard contains requirements for classification, testing and marking of the device.NOTE CCBA conforming to this British Standard might be suitable for use in situations other than those involving the specific CBRN agents identified in this standard.The following documents are referred to in the text in such a way that some or all of their content constitutes provisions of this document). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS 8468-8:2020, Respiratory protective devices for use against chemical, biological, radiological and nuclear (CBRN) agents – Part 8: Test methods BS EN 134, Respiratory protective devices – Nomenclature of components BS EN 136:1998, Respiratory protective devices – Full face masks – Requirements, testing, marking BS EN 145:1998, Respiratory protective devices – Self-contained closed-circuit breathing apparatus compressed oxygen or compressed oxygen-nitrogen type – Requirements, testing, marking BS EN 13274-1:2001, Respiratory protective devices – Methods of test – Part 1: Determination of inward leakage and total inward leakage
BS EN 14387, Respiratory protective devices – Gas filter(s) and combined filter(s) – Requirements,testing, marking BS EN ISO 16972, Respiratory protective devices – Vocabulary and graphical symbols.For the purposes of this part of BS 8468, the terms and definitions given in BS EN ISO 16972,BS EN 134 and the following apply.BS 8468-7 pdf download.