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

Abstract

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