[Evaluation of the work environment in polyvinyl chloride plants].

Working environment has been evaluated in PVC plants by air analysis for vinyl chloride concentration. The vinyl chloride emission has been found to vary with the production stage. It has been demonstrated that in the first year of the production, VC airborne concentration largely promoted the risk of developing occupational diseases. The present work conditions may be regarded as admissible and safe. This results from some technological modifications aimed at the reduction of VC emission into the ambient air.