Study on the Hazard and Suggestions to Worker in Outdoor Operations
Date Issued
2011
Date
2011
Author(s)
Wang, Yang-Chieh
Abstract
The purpose of this study is to examin the effect of the outdoor thermal environment on the allowable exposure time of workers. In this study, a suitable specification is chosen and used to evaluate the thermal hazard. Important outdoor thermal environment data, such as Dry Bulb temperature, Wet Bulb temperature and Globe temperature will be collected by an apparatus called a Heat Stress Monitor. The locations and months for measurement were Taipei, Taichung and Tainan from September to November 2010, respectively. From these data, an outdoor Wet Bulb Globe Temperature (WBGT) can be obtained. There are numerous outdoor works. Our subject focuses on workers who use grass trimmers and brush cutters. According to the standard proposed by the American Conference of Governmental Industrial Hygienists (ACGIH), this kind of work is medium duty. However, it is difficult to obtain the data of the wet bulb temperature and globe temperature, Another convenient way to evaluate the thermal environment is to use a Heat Index (HI). The heat index can only be calculated from the temperature and relative humidity through a weighted process. By means of regression analysis the relationship between the heat index, temperature, and relative humidity can then be obtained.
Subjects
Wet Bulb Globe Temperature (WBGT)
Heat Index (HI)
Thermal Hazard
Regression Analysis
Type
thesis
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