目的识别某火力发电厂的职业病危害因素,分析其危害程度并评价防护措施的效果。方法采用现场调查和工作场所有害因素的检测方法对其职业病危害及控制措施进行分析。结果检测20个粉尘作业岗位的时间加权平均(TWA)浓度,合格率为65.0%;各岗位噪声强度检测结果为70.8～88.5dB(A),合格率为81.0%;职业健康检查显示,检出Ⅰ期尘肺病8例,尘肺病检查合格率为86.7%。结论车间煤尘和矽尘治理措施中存在设计不合理或不够完善的地方,应积极采取措施,从源头上预防职业病的发生。 Objective To identify occupational hazards of a thermal power plant, analyze its harm degree and evaluate the effect of protective measures. Methods The methods of on-the-spot investigation and detection of harmful factors in the workplace were used to analyze the occupational hazards and control measures. Results The time-weighted average (TWA) concentration of 20 dust jobs was detected with a pass rate of 65.0%. The test results of noise intensity of each post were 70.8 ~ 88.5dB (A) with a pass rate of 81.0%. Occupational health examination showed that Stage I pneumoconiosis in 8 cases, pneumoconiosis examination pass rate was 86.7%. Conclusion The workshop dust and silica dust control measures in the design of unreasonable or not perfect enough place, should take active measures to prevent occupational diseases from the source.