Objective To comprehensively assess the effects of the intervention approaches on welding fume in pressure vessel manufacturing factories and to provide scientific evidences for the control measures to the occupational hazards.
Methods Three manufacturers were selected as the subject. Interventions including automatic process promotion, occupational health training, regular use of personal protective equipments, installation and maintenance of preventive facilities, and setting of accommodation places were performed in the selected 3 factories. After interventions, the differences of workers' knowledge on the hazards, coverage of worksite monitoring and occupational health check were compared, respectively.
Results Knowledge of the workers on the hazard, correct use of personal protective equipments, no-drinking/eating in worksites were significant improved(χ2=69.45, χ2=100.98, χ2=30.10; P<0.01). The rates of work station with welding fume complied to the national standard and that of the worker number undergoing health check greatly increased(χ2=7.63, χ2=57.27; P<0.01).
Conclusion The interventions were effective to control the welding fume in the pressure vessel manufacturing factories and suggested to be widely spread.
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