某在建地下工事职业病危害因素检测结果

Detection results of occupational hazards in an underground fortification under construction

目的对某在建地下工事存在的职业病危害因素进行检测分析,以提出有针对性的防护建议。方法对某在建地下工事相关岗位和工种进行职业病危害因素检测和职业卫生现场调查。结果水磨石打磨岗位总尘(TSP)短时间接触浓度高达22.2 mg/m^3,职业接触限值为8 mg/m^3;10名从事焊接和切割打磨作业的官兵个体声暴露剂量中9名超出国家标准85 dB(A)。结论该在建地下工事水磨石打磨作业岗位官兵粉尘短时间接触浓度,焊接、切割打磨岗位官兵A计权日暴露声级超过了职业接触限值的要求,存在一定的危害,应加强防护,减少对劳动者的损害。

[Objective]To detect and analyze the occupational hazards in an underground fortification under construction,provide targeted protection recommendations.[Methods]Occupational hazards detection and occupational health field investigation were performed in related posts and jobs.[Results]The short-term exposure concentrations of total suspended particulate（TSP） in terrazzo grinding position was 22.2 mg/m^3,and the occupational exposure limit was 8 mg/m^3. Among 10 soldiers engaging in welding and cutting/grinding,A-noise exposure level normalized to a nominal 8-h working day of 9 soldiers exceeded 85 d B（A）（the national occupational exposure limit）.[Conclusion] In the underground fortification under construction,the short-term exposure concentrations of TSP in terrazzo grinding position and A-weighted noise exposure level normalized to a nominal 8-h working day in welding and cutting/grinding position exceed the occupational exposure limits,which harm the health of soldiers. It is necessary to strengthen health protection to reduce the hazards.