Application of the Method of Construction of Diagram at the Stage of Heat-treatment Shop Design and Reconstruction on Safety Criteria


Annotation:

Working conditions of the employees of the electric arc furnace shop in PAO «TAGMET» (Taganrog) were investigated considering the fact that the thermal radiation is the main hazard factor of metallurgical production. At the design stage of steel-smelting and thermal shops, as well as during upgrade of the metallurgical and thermal furnaces, the possible negative effects of radiation sources on workers are not taken into account, as a result of which protection with distance and time in the shops is practically inefficient.

Calculation of heat radiation using the methods for constructing radiation diagrams and establishing the exposure dose of thermal radiation allowed to determine the class of working conditions in the hot shops with the thermoradiation microclimate, and, also to offer methods and means of protecting open and closed workplaces. Three ways are proposed to ensure acceptable working conditions on the exposure dose of thermal radiation: reduction of thermal radiation intensity from the source, decrease of the dose of the radiated body surface of the worker, limitation of time of exposure to thermal radiation. Implementation of the first option is recognized as impossible, the second is irrational. Eventually, the only reasonable method of solving the set problem is the protection from time against the harmful factor influence. Rational modes of work and rest are recommended, which allow reducing the exposure dose of thermal radiation and ensuring compliance with safe working conditions in the shop. The proposals made need to be coordinated due to possible contradictions with the requirements for technological process of smelting.

The conclusion was made about the efficiency of application of the method for radiation diagrams construction at the design and reconstruction stage of the thermal shops for assessment of metallurgists working conditions of and development of recommendations for reducing them.

B.Ch. Meskhi, Dr. Sci. (Eng.), Prof., Rector, bulyur_rostov@mail.ru Yu.I. Bulygin, Dr. Sci. (Eng.), Prof. E.V. Shekina, Cand. Sci. (Eng.), Assoc. Prof. FSBEI of HE «DSTU», Rostov-on-Don, Russia A.V. Medvedev, Deputy Head of Department — Division Head Rostechnadzor, Moscow, Russia

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DOI: 10.24000/0409-2961-2018-12-16-22
Year: 2018
Issue num: December
Keywords : thermal radiation method of diagrams working place metallurgy classes of working conditions
Authors: