Abstract
Microclimatic conditions when working inside a dam are one of the factors to which the largest number of reservoir workers are exposed to harmful and dangerous effects [3, 6]. The hygienic characteristics of the technological process of a hydraulic structure (Urta-Chirchik hydroelectric power station (HPP)) revealed the specifics of working conditions [7]. The most significant production factors for occupational risk that influence the formation of working conditions at reservoirs are such factors of the production environment as unfavorable microclimate in the workplace [8]. It has been established that the work of workers in the main professions in terms of factors of the working environment, classes of working conditions and the degree of hazard, operating three reservoirs, belongs to the hazardous class 3.4 [1, 5].
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