本英国标准规定了压缩空气管路呼吸器的要求 正压需求阀，与全面罩一起用作呼吸保护装置 用于消防、救援、疏散、逃生、危险控制和 由急救人员（如消防、救护车、警察、， 以及相关的民用机构和工作人员）在含有化学品和受化学品污染的区域， 生物、放射性和核（CBRN）试剂。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This British Standard specifies requirements for compressed air line breathing apparatus with positive pressure demand valve for use with a full face mask as a respiratory protective device intended to be used during firefighting, rescue, evacuation, escape, hazard containment and decontamination, and similar activities by emergency first 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.All current amendments available at time of purchase are included with the purchase of this document.