如何识别职业病危害因素及筛选重点评价的职业病危害因素？GBZ 331—2024 《职业卫生技术服务工作规范》

• 职业病危害因素识别

通过职业卫生调查、工程分析、资料分析和检测检验等方法，对用人单位生产工艺过程、 生产环境、劳动过程和特殊环境中可能存在的职业病危害因素的种类、来源、分布及其影响人员进行全面、客观及准确的识别，职业病危害因素识别范围应包括：

a) 国家已发布职业接触限值的；

b) 列入《职业病危害因素分类目录》的；

c) 国家已发布职业卫生检测方法的；

d) 其他对劳动者健康有影响的。

存在以下情况时，应通过检测检验识别工作场所中存在的职业病危害因素：

a) 对于成分不明的有机化学品，开展挥发性有机组分定性分析，以识别存在的化学物质；

b) 对于游离二氧化硅含量不明的粉尘，开展游离二氧化硅含量测定，以确定粉尘性质。

• 重点评价的职业病危害因素筛选

根据前期现场调查和收集的资料，筛选重点评价的职业病危害因素，依据如下：

a) 国家已制定职业接触限值和职业卫生检测方法的；

b) 国家未制定职业接触限值和（或）职业卫生检测方法的，应结合劳动者接触时间、接触机会、 接触人数和化学物质毒性、使用量及挥发性等综合分析。

  符合筛选依据中任一情形的，即为重点评价的职业病危害因素。

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