Open Access
Pallavee V. Krushna,
Nishith Ghosh,
J.D. Sharma,
Alok Srivastava,
- Industrial Hygiene and Safety Section Health Safety and Environment Group, Bhabha Atomic Research Centre Maharashtra India
Abstract
Heat stress is considered as an occupational health hazard encountered in indoor as well as outdoor environments. In industries, many operations are carried out which involve either heat generating sources like boiler, furnace, dryers etc. or hot operations like welding, melting, glass blowing and pouring. Moreover, the extremes of temperature in summer also add to the level of exposure to heat stress. Exposure of occupational workers to heat stress can lead to various health effects termed as Heat Related Illness (HRI). The health hazards will vary with degree of heat load and exposure level and individual susceptibility. Moreover, reduced work-efficiency due to heat stress also causes productivity loss. This study briefly discusses the severity of heat load and heat-related illness among occupational workers due to exposure to heat stress, evaluation methods of heat stress and occupational exposure limits. A case study is described for evaluation of heat stress using wet-bulb globe temperature and discomfort indices.
Keywords: Heat Stress, WBGT Index, Heat Related Illness (HRI), Discomfort Index (DI)
References
1. Kumar A, Singh DP. Heat stroke-related deaths in India: An analysis of natural causes of deaths, associated with the regional heatwave. J Therm Biol. 2021; 95: 102792.
2. Parsons Luke A, Drew Shindell, Michelle Tigchelaar, Yuqiang Zhang, Spector June T. Increased labor losses and decreased adaptation potential in a warmer world. Nat Commun. 2021; 12(1): 7286.
3. The 2021 report of the Lancet Countdown on health and climate change.
4. Dräger. The significance of core temperature–Pathophysiology and measurement methods. Germany: Dräger Medical GmbH; 2015.
5. Bishop P. Applied physiology of thermoregulation and exposure control. In: DiNardi SR, editor. The occupational environment: its evaluation and control. USA: American Industrial Hygiene Association; 1997; 628–658.
6. The National Institute for Occupational Safety and Health (NIOSH). Heat Stress-Heat Related Illness. [Online]. CDC. Available at: https://www.cdc.gov/niosh/topics/heatstress/heatrelillness. html (accessed March 09, 2022).
7. The University of Iowa. Heat Stress. [Online]. Environmental Health & Safety. Available at : https://ehs.research.uiowa.edu/occupational/heat-stress (accessed March 09, 2022).
8. Rick Brake, Graham Bates. A valid method for comparing rational and empirical heat stress indices. Ann Occup Hyg. 2002; 46(2): 165–174.
9. Tomonori Sakoi, Tohru Mochida. Concept of the equivalent wet bulb globe temperature index for indicating safe thermal occupational environments. Build Environ. 2013; 67: 167–178.
10. Francesca R. d’Ambrosio Alfano, Jacques Malchaire, Boris Igor Palella, Giuseppe Riccio. WBGT index revisited after 60 years of use. Ann Occup Hyg. 2014; 58(8): 955–970.
11. ISO 7243: 1989. Hot environments-estimation of the heat stress on working man, based on the WBGT-index (wet bulb globe temperature). Geneva: International Standards Organization.
12. The American Conference of Governmental Industrial Hygienists (ACGIH). Threshold limit values (TLVs) and biological exposure indices (BEIs). Cincinnati: ACGIH; 2019; Heat Stress and Strain-243.
13. Budd Grahame M. Wet-bulb globe temperature (WBGT)—its history and its limitations. J Sci Med Sport. 2008; 11(1): 20–32.
14. Epstein Y, Moran DS. Thermal comfort and the heat stress indices. Ind Health. 2006; 44(3): 388–98.
15. The American Conference of Governmental Industrial Hygienists (ACGIH). Threshold limit values (TLVs) and biological exposure indices (BEIs). Cincinnati: ACGIH; 2019; 246-Thermal Stress.
16. Shapiro Y, Seidman DS. Field and clinical observations of exertional heat stroke patients. Med Sci Sports Exerc. 1990 Feb; 22(1): 6–14.
Journal of Industrial Safety Engineering
| Volume | |
| Received | March 28, 2022 |
| Accepted | April 7, 2022 |
| Published | January 7, 2023 |