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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Thermal work limit ： ウィキペディア英語版 Thermal work limit Thermal Work Limit (TWL) is defined as the limiting (or maximum) sustainable metabolic rate that well-hydrated, acclimatized individuals can maintain in a specific thermal environment, within a safe deep body core temperature (< ) and sweat rate (<  per hour). The index is designed for self-paced workers and does not rely on estimation of actual metabolic rates, a process that is difficult and subject to considerable error. The index has been introduced into the United Arab Emirates and Australia, resulting in a substantial and sustained fall in the incidence of heat illness in the latter. == History == The idea of a thermal work limit (TWL) was developed by Dr. Graham Bates and Dr. Derrick Brake in 1997. Over the past 80 years, many heat stress indices have been developed to assist with the management of heat stress problems. Some of these have been developed for particular industries and empirically derived such as ISO 7933 and WBGT. These indices required estimation of metabolic rate but failed to consider the direct measurement of wind speed, reduction of work rate, location and time shift during work and removal of clothing, making these indices not accurate for self-paced and acclimatized workers. The need for a heat stress index designed primarily for self-paced workers has led to the development of the thermal work limit (TWL). TWL and its accompanying management protocols have been introduced into several industrial operations where workers are subject to thermal stress. Approximately 1400 persons work in these locations with over 10 million man-shifts being worked between 1965 and 1995 at wet bulb temperatures in excess of . Since the introduction of TWL-based policies in the Australian mining industry, the amount of man-hours lost due to serious heat illness has fallen from 12 million to 6 million, and the amount lost due to all heat illness incidences has fallen from 31 million to 18 million. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Thermal work limit」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.