Heat Strain Evaluation of Power Grid Outdoor Workers Based on a Human Bioheat Model

Letian Li, Boyang Sun, Zhuqiang Hu, Jun Zhang, Song Gao, Haifeng Bian and Jiansong Wu
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Letian Li: School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Boyang Sun: School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Zhuqiang Hu: School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Jun Zhang: Grid Development Integrated Research Department, State Grid Energy Research Institute Co., Ltd., Beijing 102209, China
Song Gao: Safety Supervision and Quality Department, State Grid Liaoning Electric Power Supply Co., Ltd., Shenyang 110006, China
Haifeng Bian: Grid Development Integrated Research Department, State Grid Energy Research Institute Co., Ltd., Beijing 102209, China
Jiansong Wu: School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

IJERPH, 2022, vol. 19, issue 13, 1-17

Abstract: Power grid outdoor workers are usually exposed to hot environments and could suffer the threats to occupational health and safety like heat strain and injury. In order to predict and assess the thermophysiological responses of grid workers in the heat, the clothing thermal insulation of grid worker ensembles was measured by a thermal manikin and a multi-segment human bioheat model was employed to evaluate the thermophysiological response parameters of grid workers such as core temperature, skin temperature and sweat loss. The results show that working in a hot environment can cause a obvious increase in core temperature and skin temperature of grid workers, and the acceptable maximum working time of grid workers varies greatly in different hot environments. A reasonable work organization strategy can effectively decrease the core temperature and sweat loss, increasing the duration of acceptable maximum working time for grid workers. This study is helpful to assess heat-related risks of grid workers and support power grid companies to rationalize work organization strategies and personal protection guidelines.

Keywords: occupational health and safety; grid workers; heat strain; thermophysiological responses; acceptable maximum working time (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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