呼吸器标准中的泄漏率与实验室呼吸防护水平

A brief review of inward leakage and laboratory respirator protection level in respirator standards

结合国内外呼吸器最新标准中有关泄漏率与实验室呼吸防护水平的测试条件和方法,从基本概念和评价方法入手对比剖析了不同标准之间内容的差异。文中涉及的国内外标准主要有美国职业安全与健康研究所指定的系列化生放核呼吸器标准、欧洲EN 13274-1:2001、日本JIST8159:2006、中国GB 2626-2006和GB 2890-2009以及ISO/DIN 16900-1.2草案。通过对比分析不同标准之间在评价方法中采用的气溶胶种类、受试者人数、模拟动作种类及持续时间、采样方法、测试结果评价方法等具体内容,指出了我国呼吸器标准中泄漏率测试方法及相关标准发展中应注意的问题。

Terminology of inward leakage / total inward leakage and laboratory respirator protection level are briefly introduced, followed by a description of test methods in worldwide respirator standards that relate to those terms. The standards mainly include series chemical, biological, radiological and nuclear respiratory protection standards developed by America national institute of occupational safety and health, Europe respiratory standards EN 13274 - 1：2001, Japan respiratory standard JIS T8159：2006, China respiratory standards GB 2626 -2006, GB 2890 - 2009 and ISO/DIS 16900 - 1.2 draft, etc. The differences of the inward leakage / total inward leakage test methods are analyzed, which includes the aerosol type, test subjects, simulated exercises and its continued time, sampling method and test result evaluation, etc. Based upon the comparative analysis, opinions on the problems of Chi- na respirator standard and test methods on the inward leakage that should be taken into account are given