[The working conditions in the prototype industrial production of polysulfones]

The labour conditions of the technicians engaged in experimental polysulfonic production are characterized by a combined action of toxic chemical compounds in concentrations exceeding MAC (for chlorbenzol, dinile), and equal and below MAC (for diphenylpropane, 4,4'-dichlordiphenylsulfone, dimethylsulfoxide). The duration of the technicians' contact with the hazardous chemical factors is equal to 46-98% of the working time, the labour intensity lying within the categories II-III. The working zone pollution is caused by the hygienic inadequacies of the technological processes used (with regard to periodicity and low automatization), as well as technological shortcomings of the equipment used. In accordance with the "Hygienic Classification of Labour" (No 4137-86), the labour conditions of the workers engaged in polysulfonic experimental production are related to class III--3rd degree during the initial stage and 2nd degree in the routine production process.