化学物質輸送船乗組員に及ぼす有害ガス曝露の健康影響評価 : 発がん性物質の場合

概要

論文の詳細を見る
IMO (International Maritime Organization) recognized that chronic exposure to benzene vapor in air may cause leukemia even if the concentration is very low, such as a few parts per million. Chemical tankers in Japan, however, transport various kinds of chemicals over 15 (MT/year). Not only benzene but also another chemical transported by marine vessels have adverse effects to the human health condition. In this paper, firstly the exposure concentration levels of tanker crews engaged in benzene (human carcinogen) and acrylonitrile (probable human carcinogen) transport operations are clarified by results of field measurements. Using these exposure levels, the health conditions of tanker crews are evaluated by a method with LLE (Loss of Life Expectancy). Chemicals transported by tanker in Japan contain both carcinogen and non-carcinogen. The advantage using LLE is that we can compare the degree of the adverse effects induced from exposure to carcinogens and non-carcinogens. Furthermore, taking into account of the dependency of cancer risk on the start age and the duration of the exposure, we represent a simple equation for carcinogens to yield the LLE.
社団法人日本航海学会の論文
2003-03-25