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第四讲介绍了如何识别危害环境性质和判定危险程度,将危害环境分为IDLH环境和非IDLH环境;并说明应对IDLH环境提供最安全的呼吸防护用品。那么如何评判呼吸防护用品的防护等级呢?在这一讲,我们介绍一个新概念,即呼吸防护用品的
Lecture 4 describes how to identify the nature of the hazardous environment and determine the level of risk, and to classify the environment as IDLH and non-IDLH; and provide the safest respirator for IDLH environments. So how to judge the degree of protection of respiratory protection products? In this talk, we introduce a new concept, that respiratory protection products