Publisher : Korean Society of Environmental Health
DOI : 10.5668/JEHS.2016.42.2.85
Title & Authors
Evaluation of Heat Stress and Comparison of Heat Stress Indices in Outdoor Work Kim, Yangho; Oh, Inbo; Lee, Jiho; Kim, Jaehoon; Chung, In-Sung; Lim, Hak-Jae; Park, Jung-Keun; Park, Jungsun;
Objectives: The objective of this study was to assess heat stress, compare heat stress indices, and evaluate the usefulness of wet bulb globe temperature (WBGT) among outdoor workers exposed to heat during the summer season. Methods: WBGT, dry temperature, and heat index were measured using WBGT measurers (QUESTemp 32 model and QUESTemp 34 model, QUEST, WI, USA) by industrial hygienists from August 27 to September 16, 2015. Heat stress indices were measured at the workplaces of a shipbuilder in Ulsan and a construction site in Daegu. The dry temperature observed by the Automated Synoptic Observing System (ASOS) of the Korea Meteorological Administration was also compared. Results: Dry temperature measured by WBGT is different from that by ASOS. The temperature obtained from ASOS was less than , above which point a heat wave is forecast by the Korea Meteorological Administration. A heat index above as a moderate risk was not observed during measurement. WBGT was consistently higher than , above which the risk of heat-related illness is increased in unacclimated workers involved in work with a high metabolic rate. WBGT was sometimes higher than , above which the risk of heat-related illness is increased in acclimated workers involved in work with a moderate metabolic rate in September. Conclusion: According to the measurement of heat stress indices, WBGT was more sensitive than heat index and temperature. Thus, general measures to prevent heat-related diseases should be implemented in workplaces during the summer season according to WBGT.
Heat;heat stroke;outdoor work;WBGT ;
Korea Meteorological Administration. 2012 Workshop on National Climate Change Scenario; 2012.
Korea Meteorological Administration. 2015 Forum on Heat Wave: Still Killer, Current Status and Measures; 2015
Korean Center for Disease Control and Prevention. Report on Heat-Related Illness due to Heat Wave; 2014.
Korea Occupational Safety and Health Agency (KOSHA). Data base of industrial accident statistics; 2010-2014.
Sawada S. Current Status of Heat Illness and its Prevention. Tokyo: Kyorin Shoin; 2015.
Humidex group. Humidex. Available: http://www.humidex.ca/ [accessed 21 November 2015]
Occupational Safety & Health Administration (OHSA). Using the Heat Index: A Guide for Employers. Available: https://www.osha.gov/SLTC/heatillness/heat_index/ [accessed 21 November 2015]
Jung EG. KOSHA GUIDE on Management of Work Environment Exposed to Heat (KOSHA GUIDE W-12-2012). KOSHA; 2012.6.
Korean Ministry of Employment and Labor. Threshold Limit Value of chemical and physical agents. 2016. Available: www.moel.go.kr/download.jsp?type=/bbs/&file...No.38).hwp [accessed 21 January 2016]
d'Ambrosio Alfano FR, Palella BI, Riccio G. Thermal environment assessment reliability using temperature- humidity indices. Ind Health. 2011; 49(1): 95-106.
Pradhan B, Shrestha S, Shrestha R, Pradhanang S, Kayastha B, Pradhan P. Assessing climate change and heat stress responses in the Tarai region of Nepal. Ind Health. 2013; 51(1): 101-12.
Nag PK, Dutta P, Nag A. Critical body temperature profile as indicator of heat stress vulnerability. Ind Health. 2013; 51(1): 113-22.
Sheffield PE, Herrera JG, Lemke B, Kjellstrom T, Romero LE. Current and future heat stress in Nicaraguan work places under a changing climate. Ind Health. 2013; 51(1): 123-7.
Heidari H, Golbabaei F, Shamsipour A, Rahimi Forushani A, Gaeini A. Outdoor occupational environments and heat stress in IRAN. J Environ Health Sci Eng. 2015; 13: 48.
Venugopal V, Chinnadurai JS, Lucas RA, Kjellstrom T. Occupational heat stress profiles in selected workplaces in India. Int J Environ Res Public Health. 2015; 13(1): 89.
ISO 7243 Estimation of the heat stress on working man, based on the WBGT-index 1989
Yaglou CP, Minard D. Control of heat stress casualties at military traning centers. Arch Ind Health. 1957; 16: 302-13.
Canadian Centre for Occupational Health and Safety (CCOHS). Working in Hot Environments: Health & Safety Guide. 1st edition; 2005
Japanese Ministry of Health, Labor and Welfare. Administrative order on prevention of heat-related disease. 2009. Available: http://www.mhlw.go.jp/stf/houdou/2r98520000029dal-att/2r98520000029dcb.pdf [accessed 17 February 2016]
American Conference of Governmental Industrial Hygienists (ACGIH). Documentation of the threshold limit values and biological exposure indices. 7th ed. Cincinnati (OH): ACGIH; 2015.