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目的对重庆市某科技公司职业病危害进行调查,识别生产过程中产生的职业病危害因素,确定其危害程度,并对职业病危害现状进行分析。方法采用职业卫生现场调查、职业病危害因素检测检验方法进行定性和定量分析与评价。结果存在的主要职业病危害因素为噪声、高温、聚乙烯粉尘、γ射线和二氯甲烷,收卷工、配料工接触噪声8 h等效声级(LEX,8 h)超过国家标准要求,最大值为90.1 dB(A);高温湿球黑球温度(Wet bulb globe temperature index,WBGT指数)、聚乙烯粉尘浓度、γ射线检测结果符合国家标准要求;萃取工、回收装置操作工接触的二氯甲烷8 h时间加权平均浓度(CTWA)符合标准要求,萃取操作位、横向拉伸操作位二氯甲烷短时间浓度超标,达到2.7~4.9倍职业接触限值(Occupational exposure limits,OELs)。结论该公司职业病危害风险分类为严重,关键控制因素为噪声、二氯甲烷,职业病危害现状不容乐观,需采取工程技术措施,改善作业现状。
Objective To investigate the occupational hazards of a technology company in Chongqing, identify the hazards of occupational diseases in the production process, determine the degree of harm, and analyze the current status of occupational diseases. Methods The occupational health field survey, occupational disease hazard testing methods for qualitative and quantitative analysis and evaluation. Results The main occupational hazards were noise, high temperature, polyethylene dust, gamma rays and methylene chloride, rewinder, dosing workers 8 h equivalent sound level (LEX, 8 h) exceeded the national standard, the maximum 90.1 dB (A); Wet bulb globe temperature index (WBGT index), polyethylene dust concentration, γ-ray detection results in line with national standards; Extraction workers, recycling plant operators contact with dichloromethane The 8-hour time-weighted average concentration (CTWA) met the standard requirements. The extraction operation position and the transverse stretching operation position exceeded the short-term concentration of dichloromethane, reaching 2.7 to 4.9 times Occupational exposure Limits (OELs). Conclusion The risk of occupational diseases in this company is classified as serious. The key control factor is noise. The current status of methylene chloride and occupational diseases is not optimistic. Engineering and technical measures should be taken to improve the current operation status.