某企业偶氮二异丁腈车间主要职业病危害因素识别与关键控制点分析

目的识别某企业偶氮二异丁腈车间的职业病危害因素,检测其危害程度,找出职业病危害的关键控制点。方法采用职业卫生现场调查、职业卫生检测和综合分析法进行评价。结果该项目存在的职业病危害因素有粉尘、化学毒物和噪声,粉尘、化学毒物和噪声分别检测6、8和4个岗位。粉尘浓度为0.3~2.7 mg/m3,合格率100%;存在的化学毒物为甲醇、硫酸、丙酮氰醇和过氧化氢,浓度分别为40.9~796.0 mg/m3、0.3 mg/m3、0.1~1.0mg/m3和0.9~1.1 mg/m3。除甲醇合格率为50%外,其余均低于职业接触限值;噪声强度为80.5~89.6 dB(A),超标率为50%。结论甲醇、丙酮氰醇和噪声是偶氮二异丁腈生产过程中职业病危害因素重点分析因素。

Identification of occupational hazard and analysis of the key control points in azodiisobutyronitrile workshop

Objective To identify possible occupational hazard factors in the azodiisobutyronitrile workshop, analyze its damage degree and find out the key control points of occupational hazards. Methods The assessment was carried out with combination of occupational hazard research, detection and analytical methods. Results The main occupational hazard fac- tors were dust, poisonous chemicals and noise, measured in 6, 8 and 4 posts. Dust concentration was 0.3 - 2.7 mg/m3 , qualified rate was 100% ;The concentrations of chemical poisons included methanol, sulfuric acid, acetone cyanohydrin and peroxide were 40. 9 - 796. 0 mg/m3, 0. 3 mg/m3, 0. 1 - 1.0 mg/m3 and 0. 9 - 1.1 mg/m3 respectively. Methanol qualified rate was 50% , the rest were lower than the occupational exposure limits ; The intensity of the noise were 80. 5 - 89. 6 dB （ A）, qualified rate was 50%. Conclusion The key occupational risk factors are methanol, acetone cyanohydrin and noise in the azodiisobutyronitrile workshop.