某煤矿职业病危害因素及关键控制点分析

Occupational Disease Hazards and Critical Control Points in a Coal Mine

目的了解煤炭开采行业职业病危害因素分布,确定其关键控制点。方法采用现场职业卫生学调查方法,对河南省某煤矿职业病危害因素分布情况进行调查和检测,分析煤矿的职业病危害因素及关键控制点。结果 16个粉尘作业点中短时间接触容许浓度(STEL)符合国家卫生标准的占69%,18个工种的时间加权平均浓度(TWA)符合国家卫生标准的占67%;检测35个噪声作业点,合格率为80%;4种有毒物质的测试结果全部符合国家标准。结论该煤矿的主要职业病危害因素是粉尘和噪声,应加强有关作业工人的防护。

Objective To examine the critical control points of occupational disease hazards in a coal mine. Methods With field investigation on occupational disease hazard in the mine, control effect of the hazard was evaluated and the critical control points were analyzed. Results A proportion of 69% of the 16 dust work sites were qualified with the na- tional standards in terms of short term exposure limit（STEL） values,and 67% of the time -weighed average values （TWA） of 18 posts were qualified with national standards;80% of the 35 noise work sites were qualified as well. Four toxic poisonous substances were all within the national limits. Conclusion The main occupational hazards are noise and dust in the coal mine, which are greater hazard to the workers, and thus protective facilities and measures should be taken to decrease occupational hazards.