SURVEY OF THE PRODUCTIVITY LOSS DUE TO HEAT STRESS IN DIFFERENT TASKS OF FARMERS IN DARREH SHAHR CITY

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MONAZAM ESMAEILPOUR M.R.; GOLBABAEI F.; KHODAYARI F.; AZAM K.

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Journal: Journal of Health and Safety at Work Year:2015 | Volume:5 | Issue:3 Page(s): 63-74

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Title

SURVEY OF THE PRODUCTIVITY LOSS DUE TO HEAT STRESS IN DIFFERENT TASKS OF FARMERS IN DARREH SHAHR CITY

Author(s)

MONAZAM ESMAEILPOUR M.R. | GOLBABAEI F. | KHODAYARI F. | AZAM K. | Issue Writer Certificate

Keywords

WBGT INDEXQ3

HEAT STRESSQ2

LOSS OF PRODUCTIVITYQ3

FARMERSQ3

Abstract

Introduction: Heat is one of the hazardous physical agents in the workplace. Exposure to heat and consequent thermal stress influence workers productivity in addition to adverse health effects. The aim of this study was to determine the HEAT STRESS induced productivity loss related to different tasks of FARMERS in Darreh Shahr city, during summer.Material and Method: This cross-sectional study was conducted in summer, 2014, among FARMERS in Darreh Shahr city. After determining the sample size, FARMERS’ activities were determined using hierarchical task analysis (HTA), and WBGT measurements were done according to the ISO7243. Metabolism was estimated by the ISO8996. Following, the type of activities were identified according their required metabolism. Knowing WBGT and workload and using the work capacity model, the productivity loss in different tasks and ultimately total productivity loss were calculated.Result: The mean WBGT activities for plowing, terracing, planting seeds, watering, fertilizing, weeding, spraying, and harvesting were 29.98oC, 31.28oC, 30.66oC, 31.39oC, 31.99oC, 31.75oC, 31.08oC, and 30.3oC, respectively. WBGT values were higher than the permissible level provided by ISO7243 in all farming activities. Maximum value of WBGT was belonged to fertilizing activity (31.99oC) and the lowest value was for plowing (29.98oC). ANOVA test results did not show a significant difference in WBGT at head, waist, and ankle height. The highest and lowest amount of productivity loss was estimated respectively for weeding and plowing activities. The total productivity loss for farming was calculated 69.3 percent in an hour which is due to high physical activity, working outdoor, with exposure to direct solar radiation, and consequent HEAT STRESS imposed to workers.Conclusion: Productivity is a factor which is affected by the workplace HEAT STRESS. According to results of the present research, the amount of productivity is reduced in different tasks due to heat and this reduction is exacerbated by increase in temperature and might impact the local economy. Thus, further studies are needed to improve the working conditions.

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APA: Copy

MONAZAM ESMAEILPOUR, M.R., GOLBABAEI, F., KHODAYARI, F., & AZAM, K.. (2015). SURVEY OF THE PRODUCTIVITY LOSS DUE TO HEAT STRESS IN DIFFERENT TASKS OF FARMERS IN DARREH SHAHR CITY. JOURNAL OF HEALTH AND SAFETY AT WORK, 5(3), 63-74. SID. https://sid.ir/paper/235698/en

Vancouver: Copy

MONAZAM ESMAEILPOUR M.R., GOLBABAEI F., KHODAYARI F., AZAM K.. SURVEY OF THE PRODUCTIVITY LOSS DUE TO HEAT STRESS IN DIFFERENT TASKS OF FARMERS IN DARREH SHAHR CITY. JOURNAL OF HEALTH AND SAFETY AT WORK[Internet]. 2015;5(3):63-74. Available from: https://sid.ir/paper/235698/en

IEEE: Copy

M.R. MONAZAM ESMAEILPOUR, F. GOLBABAEI, F. KHODAYARI, and K. AZAM, “SURVEY OF THE PRODUCTIVITY LOSS DUE TO HEAT STRESS IN DIFFERENT TASKS OF FARMERS IN DARREH SHAHR CITY,” JOURNAL OF HEALTH AND SAFETY AT WORK, vol. 5, no. 3, pp. 63–74, 2015, [Online]. Available: https://sid.ir/paper/235698/en

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