重庆某地下储气库项目职业病危害现状

Status of occupational hazards in an underground gas storage project in Chongqing

目的评价重庆某地下储气库项目的职业病危害现状。方法采取职业卫生学调查、职业病危害因素检测和职业健康监护等方法进行分析与评价。结果存在的主要职业病危害因素有甲烷、非甲烷总烃、硫化氢、一氧化碳、氮氧化物、乙二醇、噪声、工频电场和高温,经检测工作场所噪声54点次,噪声强度大于85 dB(A)的15点次,个体噪声共检测9人次,各工种每周40 h等效声级值最高71.6 dB(A);工频电场强度、化学毒物浓度检测结果均符合国家限值要求。结论注气压缩机、清管作业、乙二醇添加过程作为职业病危害关键控制点,通过加强关键控制点的职业病危害防控和生产设备、管道意外泄漏时有应急救援处置预案,可降低职业病危害,保护劳动者健康。

[Objective] To evaluate the status of occupational hazards in an underground gas storage project in Chongqing.[Methods] The occupational hygiene investigation,occupational hazard detection and occupational health surveillance were applied in the analysis and evaluation.[Results] The main occupational hazard factors included methane,non-methane total hydrocarbon,hydrogen sulfide,carbon monoxide,nitrogen oxides,ethylene glycol,noise,power frequency electric field and high temperature. Totally 54 points-times were detected for the noise in workplace,and 15 points-times showed the results of noise intensity greater than 85 dB（A）,9 person-times were detected for the individual noise,and the maximum value of equivalent sound level to a nominal 40 h working week was 71.6 dB（A）. The results of power frequency electric field strength and chemical poison concentration were lower than the national limits.[Conclusion]Gas injection compressor,pigging operation and glycol addition process are the occupational hazard critical control points. It is necessary to strengthen the occupational hazard prevention and control at critical control points,and emergency rescue of production equipment and pipeline accident leakage to reduce occupational hazards and protect laborers＇ health.