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The article presents microclimate parameters registered on workplaces of gas industry outdoor workers during summer in&#x0D;Astrakhan region as well as equations for calculation of external thermal load and for correlation relationship between&#x0D;external thermal load and functional status of worker (with regard for age and weight). The paper shows dynamics of&#x0D;thermal load on work-er’s body and health during a shift. Factor structure is defined for health characteristics bound to&#x0D;high external temperature, activation of thermoregulation mechanisms, cardiovascular system, and exhaustion. Analysis&#x0D;of health indexes dynamics gives basis for definition of preferable du-ties. According to workers and their functional state&#x0D;assessment average air temperature of 35,3±3,3 °С is defined as unfavorable, 38,5±0,4 °С – as problematic. The most&#x0D;preferable (71% of answers) shift schedule includes alternation of periods of work and rest (in the shade). Reduced shifts&#x0D;and regulation of periods of work and rest are preferred by 14,6% working. Suggestions for improvement of hygienic and&#x0D;ergonomic indexes of PPE are presented on the basis of the questionnaire.

Influence of Environmental Thermal Load on Functional Status of Gas Industry Outdoor Workers During Summer