เปรียบเทียบผลการประเมินภาระงานที่สัมผัสความร้อนระหว่างวิธีการประเมินด้วยตารางการใช้พลังงาน และวิธีการคำนวณการใช้ออกซิเจน

Abstract

ABSTRACT

The objective of this study was to compare the work load determination between energy expenditure table of the National Institute of Occupational Safety and Health and oxygen consumption method. Work load of eight tasks were determined using the oxygen consumption instrument, Cortex model; Metamax XR 3B and these tasks were also recorded with video camera. It showed two heavy works, three moderate works and three light works. The video records of eight workers were shown to 119 safety professionals to do the determination of work load using the energy expenditure table. The results revealed that the accuracy was between 13.4% and 71.4% and the average number of correct work load determination was 3.44 out of eight tasks (43%). The educational background and experiences in occupational health of safety professional showed no significant in work load determination. Thus, work load determination should be specified to get the accurate value, to be fair to employee and employer as required by the regulation. The oxygen consumption method should be applied according to its accuracy.

Key words: Work load, oxygen consumption, heat