摘要
目的了解卫生工程在技术改造中的作用,对比技术改造前后粉尘浓度的变化,为其他相似项目的技术改造提供借鉴,同时为有关部门的管理提供可靠依据。方法依据国家有关标准、规范的要求对工作场所生产性粉尘浓度、排风罩罩口风速、风量、罩口至工作面的距离、罩口尺寸等进行检测并对检测结果进行评价及分析。结果改造前,工作场所各工位生产性粉尘时间加权平均浓度为8.67-15.10 mg/m3、超限倍数为2.31-3.26,卫生工程通风系统改造后,工作场所各工位生产性粉尘有了明显下降,时间加权平均浓度为3.35-7.07 mg/m3、超限倍数为0.57-1.44。结论卫生工程通风系统改造后,工作场所生产性粉尘浓度的检测结果前后差异明显,能有效降低工作场所生产性粉尘浓度,从而预防职业病的发生。
Objective To know the effect of sanitary engineering in technical transformations and compare the productive dust density before and after the reconstruct,so as to provide references for other similar projects,and provide reliable basis for relevant departments＇ management,reduce the impact of productive dust on the health of workers. Methods According to the relevant national standards and regulations,the contents were tested including productive dust concentration in the workplace,the wind speed and air volume of the exhaust air cap,the distance of the hood to the work face and the size of the hood,then the detection results were assessed and analyzed. Results After the reconstruction of the sanitary ventilating system,the productive dust concentration declined,time weighted average concentration of productive dust decreased from 8. 67-15. 1 mg / m3 to 3. 35-7. 07 mg / m3,and the excursion limits reduced from 2. 31-3. 26 to 0. 57-1. 44. Conclusion The transformation can effectively reduce the workplace productive dust concentration and prevent occupational diseases.
出处
《中国卫生工程学》
CAS
2015年第6期505-507,共3页
Chinese Journal of Public Health Engineering
关键词
技术改造
卫生工程
分析
粉尘
Technical transformation
Sanitary engineering
Analysis
Dust
