氟作业现场职业卫生学调查及10年动态分析

Occupational hygienic investigation and 10-year dynamic analysis on surroundings with fluorine

目的 通过对氟作业现场卫生学调查及危害分析 ,提出早期预防措施和对策。方法 对白银公司氟化盐厂氟作业现场职业卫生学调查及氟化氢浓度的监测 ,分析其工艺流程 ,找出危害关键点。结果 该厂氟化氢浓度最高为7 5 6mg/m3 ,超标 2 78倍 ,经采取有效防护措施 ,毒物浓度下降 ,接近国家职业卫生标准 ( 2mg/m3 )。结论 监测作业工人生产环境中氟化氢浓度对预防和早期诊断慢性工业性氟病具有重要意义。

Objective Through the occupational investigation and hazard analysis on work surroundings with fluorine to propose the early preventive steps and countermeasures. Methods Through the occupational hygienic investigation, monitoring hydrogen fluoride concentration, analyzing the technical courses to find out the hazardous key points in the Salt Fluoride Plant of Baiyin Company. Results The highest concentration of hydrogen fluoride in the plant was 7.56 mg/m3, it exceeded the national standard 2.04 times. After taking effective measures, the concentration of hydrogen fluoride decreased, which appeared to be close to the national hygienic standard(2 mg/m3). Conclusion It is very important for prevention and early diagnosis to supervise density of hydrogen fluoride on work surroundings.