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目的了解燃气电厂生产过程中的职业病危害因素及其危害程度,并确定职业病防护关键点。方法采用职业卫生检测法、职业卫生现场调查法、职业健康检查等方法进行职业病危害评价。结果工作场所中电焊烟尘、其他粉尘的8 h时间加权平均浓度为0.22、0.06 mg/m~3。工作场所中氢氧化钠、盐酸、氨、硫酸、甲烷、一氧化碳、二氧化氮、氟化物等浓度均未超标。巡检人员和点检员噪声等效声级最高为88.6、88.3 d B(A)。巡检人员时间加权湿球黑球温度(WBGT)为27.7℃,巡检作业为高温作业。1#~3#变压器(220 kV)工频电场范围为165.2~413.2 V/m。结论燃气电厂职业病危害防治要点是稳态噪声、高温。稳态噪声的危害程度较高,噪声的职业病防护措施应重点关注个体防护用品的使用及劳动者实际接触噪声的时间。
Objective To understand the occupational hazards and their harmfulness in the process of gas power plant production and to determine the key points of occupational disease protection. Methods The methods of Occupational Health Examination, Occupational Health Field Investigation and occupational health examination were used to evaluate the occupational hazards. Results The weighted average concentration of welding fume and other dust in the workplace at 8 h was 0.22 and 0.06 mg / m ~ 3, respectively. The concentration of sodium hydroxide, hydrochloric acid, ammonia, sulfuric acid, methane, carbon monoxide, nitrogen dioxide and fluoride in the workplace did not exceed the standard. The equivalent sound level of the inspector and inspector is 88.6,88.3 d B (A). Patrol time weighted wet bulb black ball temperature (WBGT) 27.7 ℃, inspection operations for high temperature operation. The power frequency electric field of 1 # ~ 3 # transformers (220 kV) is 165.2 ~ 413.2 V / m. Conclusion The main points of prevention and treatment of occupational hazards in gas-fired power plants are steady-state noise and high temperature. Steady-state noise is more harmful. Occupational disease prevention measures with noise should focus on the use of personal protective equipment and the actual exposure of workers to noise.