2011年莱芜市某海绵铁项目职业病危害控制效果评价

Evaluation on Control Effect on Occupational Hazards in a Project of Powder Metallurgy

[目的]明确莱芜市某扩建的年产25 000t/年海绵铁生产线项目产生的职业病危害因素,分析其危害程度及对劳动者健康的影响,评价职业病危害防护措施及其效果。[方法]2011年,采用现场职业卫生学调查、职业病危害因素检测和职业健康检查等方法进行综合分析。[结果]该项目存在的主要职业病有害因素是粉尘、噪声、高温与热辐射、一氧化碳等。检测结果,各检测点空气中粉尘浓度均低于8mg/m3的PC-TWA卫生标准,一氧化碳浓度均小于相应职业接触限值30mg/m3;原料区域北部的8h等效声级为85.5dB(A),超过接触限值85dB(A),其他15个点均合格。对98名作业工人进行了在岗期间职业健康检查,未发现职业禁忌证和疑似职业病。[结论]该项目职业病危害因素的防护措施基本有效。

[Objective]To make clear the occupational hazards of sponge iron production line with an annual output of 25000 tons,analyze its damage degree and the effect on the workers, evaluate the measures of protection and its effect. [Methods]The methods of field investigation health monitoring, testing of occupational hazards and occupational health surveillance were carried out. [Results]The main occupational hazards were dust, noise, high temperature and thermal radiation,and carbon monoxide. The result of the dust concentration was lower than 8 mg/m3 of the health standard,the concentration of carbon monoxide was lower than 30 mg/m3 ;The noise of the area of raw materials was 85.5 dB（A）,higher than the limits of 85 dB（A）. The other 15 areas were qualified. The results of the occupational health surveillance of 98 workers showed no occupational contraindications and suspected occupational diseases. [Conclusion]The protective measures against occupational hazards in this project are feasible and effective.