本英国标准规定了压缩空气管路呼吸器的要求 持续的气流作为呼吸保护装置，用于救援、疏散、， 紧急情况优先的逃生、危险控制和去污以及类似活动 响应者或第一接受者（如消防、救护车、警察和相关民事机构和 工人）在含有化学、生物、放射性和核污染的区域 （CBRN）代理。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 constant airflow as a respiratory protective device intended to be used during rescue, evacuation, escape, hazard containment and decontamination, and similar activities by emergency first responders or first receivers (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.