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:: Volume 17, Issue 2 (Summer 2015) ::
J Mil Med 2015, 17(2): 89-95 Back to browse issues page
Heat Stress Assessment in Outdoor Workplaces of a Hot Arid Climate Based on Meteorological Data: A Case Study in Qom, Iran
Roohalah Hajizadeh, Somayeh Farhang Dehghan, Ahmad Mehri, Farideh Golbabaei *, Mohammad Hossain Beheshti, Hasan Haghighatjou
Department of Occupational Health,, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Abstract:   (5894 Views)

Aims: The aim of the present research was to assess the occupational heat stress using WBGT and ESI indexes in outdoor workplaces of the Qom province as a hot-arid climate based on meteorological data.

Methods: This cross-sectional study was performed based on meteorological data of the Qom meteorological stations in 2013 (from June to September). Environmental parameters including dry temperature, dry soil surface temperature, solar radiation, relative humidity and air velocity were measured every 10 minutes from 7 am to 7 pm. The WBGT index based on the formula provided by the Australian Meteorological Organization was prepared and the ESI index was calculated based on the formula proposed by Moran.

Results: The mean WBGT and ESI were 27oC and 25.58oC, respectively.
The maximum value of WBGT (28.59 oC) was recorded between 15 pm to 16 pm and the maximum value of ESI (27.49 oC) was measured between 14 and 15 pm. According to the independent sample-T-test, ESI and WBGT was significantly higher in July than its values in the other months (p<0.05).

Conclusion: The weather conditions in hot seasons are not suitable for outdoor workplaces with heavy workloads and the administrative and engineering control measures should be considered seriously.

Keywords: Outdoor Workplaces, Heat Stress, WBGT Index, ESI Index
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Type of Study: Orginal Research | Subject: military medcine
Received: 2015/03/9 | Accepted: 2015/08/30 | Published: 2015/10/12


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Hajizadeh R, Farhang Dehghan S, Mehri A, Golbabaei F, Beheshti M H, Haghighatjou H. Heat Stress Assessment in Outdoor Workplaces of a Hot Arid Climate Based on Meteorological Data: A Case Study in Qom, Iran. J Mil Med. 2015; 17 (2) :89-95
URL: http://militarymedj.ir/article-1-1376-en.html


Volume 17, Issue 2 (Summer 2015) Back to browse issues page
مجله طب‌نظامی Journal Mil Med
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