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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 diseases in an underground gas storage project in Chongqing. Methods Occupational hygiene investigation, occupational disease risk factors testing and occupational health monitoring methods were analyzed and evaluated. Results The main occupational hazards are methane, non-methane total hydrocarbons, hydrogen sulfide, carbon monoxide, nitrogen oxides, ethylene glycol, noise, power frequency electric field and high temperature. The workplace noise was detected 54 times and the noise intensity was greater than 85 dB (A) at 15 o’clock. Individual noise was detected 9 times. The equivalent sound level of each type of work was 71.6 dB (A) at 40 h per week. The results of power frequency electric field strength and chemical poisons concentration all met the national limit requirements. Conclusions Gas injection compressor, pigging operation and ethylene glycol addition process are the key control points of occupational hazards. By strengthening the control and production equipment of occupational hazards in critical control points, contingency plans for emergency rescue in case of unexpected pipeline leakage may reduce occupational hazards , To protect the health of workers.