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| Risk pre-assessment of occupational hazards in a waste ecological landfill project |
| RUAN Xiao-ying*, FU Hong, ZHU Lin, YU Ai-qing, WANG Qiang, ZHANG Lei, ZHANG Mei-bian
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| *Hangzhou Institute for the Prevention and Treatment of Occupational Disease,Hangzhou,Zhejiang 310014,China |
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Abstract Objective To pre-assess the occupational hazards in a waste ecological landfill project using comprehensive exposure index with analogy method,and to provide reference for improvement of protective measures and prevention of occupational diseases. Methods Some enterprises which were comparable with the project in landfill storage capacity,disposal scale,techniques,occupational hazards and occupational health management were selected to carry out on-site occupational health survey,and were evaluated by occupational exposure limits（OEL）. The risk of occupational hazards of the project was assessed by analogy and comprehensive index method. Results The occupational hazards of analogous enterprises were hydrogen sulfide,ammonia,other dust and noise in ash solidification workshop,paving post in landfill area,spraying post and inspection post in sewage disposal area;manganese and its inorganic compounds,welding fume and arc light in welding post. Except for the noise intensity of spraying post exceeding the national OEL,the other items were qualified. The results of the pre-assessment of the project showed that in the posts with vacant OEL,the hazards of paving compaction post exposed to high temperature in summer,spraying post exposed to high temperature in summer,cypermethrin and machine repairing post exposed to heat,ozone and noise were at moderate risk;in the posts qualified by OEL,the hazards of paving compaction and sewage disposal posts exposed to noise were neglectable,paving compaction and transportation post exposed to other dust were at low risk,others were at moderate risk;unqualified spraying post exposed to noise was at moderate risk. Conclusion Medium-risk occupational hazards exist in paving compaction,spraying,sewage disposal and machine repairing posts. Comprehensive index method combined with analogy method can comprehensively achieve the occupational hazard pre-assessment of a proposed project.
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Received: 17 May 2019
Revised: 29 August 2019
Published: 27 November 2019
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