目的 识别与确定浙江省某输气公司6座分输站、1座压气站和1座维抢修队工作场所职业病危害因素及其接触水平,掌握职业病危害现状,提出相应对策和改进措施,预防与控制职业病危害,以保护劳动者健康.方法 2022年7-10月收集公司相关资料,在对作业现场进行职业卫生现场调查的基础上进行职业卫生现场检测,用检查表法对该公司职业病危害现状进行综合评价.结果 该公司站场/维修队存在的主要职业病危害因素包括甲烷、一氧化碳、氮氧化物、硫化氢、砂轮磨尘、噪声和工频电场等.采集化学有害因素样品:一氧化碳59个、氮氧化物57个、硫化氢21个、砂轮磨尘2个,所有样品检测合格率100.0％;检测物理有害因素:噪声279个、工频电场99个、照度7个,噪声40/8 h等效声级、8 h 工频电场强度时间加权平均值检测结果合格率100.0％,但发电间、压缩机房、压缩机空冷区、部分站场调压区及打磨操作位等工作场所噪声强度超过85 dB(A),照度检测结果合格率71.4％.检查发现部分发电间防爆轴流风机事故通风换气次数低于12次/h.结论 该公司站场正常生产状况下职业病危害因素检测结果符合限值要求,职业病防护效果和设施符合法律法规要求,职业卫生管理体系较健全,但在职业病防护设施运行、防护用品使用、警示标识完善等方面存在问题.建议加强职业卫生管理制度的落实与完善,并加强相应的宣传教育.
Evaluation of occupational hazards in a gas transmission company in Zhejiang Province
Objective To identify and determine the occupational hazards and their exposure level in the workplace of 6 gas transmission stations,1 compressor station and 1 maintenance team in a gas transmission company in Zhejiang Province.Mastering the present situation of occupational hazards and put forward corresponding countermeasures and improvement measures,preventing and controlling of occupational hazards,aiming to protect the health of workers.Methods Collecting the relevant data of the company from July to October 2022,carrying on the occupational health spot detection on the basis of the occupational health spot investigation,and evaluating the present situation of the occupational disease hazards of the company comprehensively by using the checklist method.Results The major occupational hazards of the station maintenance team include methane,carbon monoxide,nitrogen oxide,hydrogen sulfide,grinding wheel dust,noise and power frequency electric field.Collectted samples of harmful chemical factors:59 carbon monoxide,57 nitrogen oxides,21 hydrogen sulfide,and 2 grinding wheel dust.The pass rate of all samples was 100.0％.Detected physical harmful factors:279 noise levels,99 power frequency electric fields,and 7 illuminance levels.The qualified rate of the 40/8 h equivalent sound level and 8 h power frequency electric field intensity time weighted average detection results was 100.0％.However,the noise intensity in workplaces such as power generation rooms,compressor rooms,compressor air cooling areas,some station voltage regulating areas,and polishing operation positions exceeded 85 dB(A),and the qualified rate of illuminance detection results was 71.4％.Upon inspection,it was found that the accident ventilation frequency of some explosion-proofaxial flow fans in the power generation room was less than 12 times per hour.Conclusions Under the normal production condition of the station and yard,the detection results of occupational disease hazardous factors meet the limit requirements,the occupational disease hazardous protection effect and facilities meet the requirements of laws and regulations,and the occupational health management system is relatively sound,problems including no portable carbon monoxide gas detector,explosion-proof axial flow fan accident ventilation frequency less than 12 times/h in some stations,employees start the generator without earplugs,lighting lamp damage replacement is not timely,the occupational hazards warning signs are not perfect,and so on.It is suggested that the implementation and improvement of occupational health management system,the corresponding publicity and education should be strengthened.
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