某煤矸石热电厂新建项目职业病危害预评价

Pre-Evaluation of Occupational Hazards in Construction Project of the Gangue Power Plant

目的识别与分析建设项目职业病危害因素及其危害程度，提出合理、可行的职业病防治措施，为卫生行政部门审批提供技术依据。方法通过现场调查和工程分析，采用类比法进行分析与评价。结果该项目可能存在的主要职业病危害因素有粉尘、有毒物质、噪声和高温等；类比检测结果为工作场所呼吸性粉尘浓度为0．7～12．7mg／m^3，合格率84．1％，工种呼吸性粉尘浓度为0．3～2．2mg／m^3，合格率84．2％；有毒物质检测结果均低于职业接触限值；噪声强度为63．0～100．7dB（A），合格率94．8％，工种噪声强度为63．8—84．3dB（A），合格率100％；工作场所WBGT指数为26．2—31．5℃，均为高温作业点。结论该项目存在的主要职业病危害因素是粉尘和噪声。项目建成投产后，采取有效的职业病防护措施，并加强职业病防治工作，其主要职业病危害是可以预防和控制的。

Objective To identify and analyze the occupational risk factors and harmful degree in the Gangue power plant, and provide technical basis for the health administrative departments. Methods Based on field investigation and engineering analysis, analogy was carried out to evaluate. Results The main occupational risk factors included dust, toxic substances, noise and heat. The analogical project was detected , the concentration of respirable dust in workplace was 0. 7 - 12. 7 mg/m^3, which qualified rate was 84. 1% ; the concentration of respirable dust of trades was 0.3 - 2. 2 mg/m^3, and the qualified rate was 84. 2% ; the values of toxic substances were lower than the occupational exposure limits; noise intensifies were 63.0 - 100. 7 dB （ A）, and the qualified rate was 94. 8 % ; the noise intensities of trades were 63.8 - 84.3 dB （2k） , and pass rate was 100% ; WBGT indexes of the workplace were 26. 2 - 31.5℃, which belonged to high temperarure.Conclusion Dust and noise are the main occupational risk factors in the project. The hazards can be prevented and controlled , as long as the protective measures are effectively taken , and the prevention and treatment of occupational diseases are strengthened.