The estimation of professional risk on the basis of a priori and a posteriori criteria at five enterprises of
the fuel and energy complex located in the Volga and Urals Federal Districts was carried out. Based on
the conducted studies, a conceptual model for assessing risk management in oil producing, oil refining
and petrochemical enterprises was developed, tested in real conditions and demonstrated high efficiency.
We have compared working conditions and health state of workers engaged in low- and large-tonnage
ethylbenzene-styrene manufacturing. It has been shown that working conditions of low-tonnage workers
are of сlass 3.3. They cause chronic occupational diseases as well as a high degree of work-related chronic
diseases. Working conditions of large-tonnage workers are of сlass 3.1. Careful medical examination has
not revealed any changes in «critical» organs and systems.
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