Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Survey on Annual Excess Trend for Permissible Exposure Limit of Trichloroethylene

트리클로로에틸렌의 허용기준 적용에 따른 연도별 초과 경향 연구

  • Kim, Ki-Youn (Department of Safety Engineering, Seoul National University of Science & Technology)
  • 김기연 (서울과학기술대학교 안전공학과)
  • Received : 2019.02.26
  • Accepted : 2019.03.12
  • Published : 2019.03.31
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Abstract

Objective: The aim of this study is to analyze an excess trend for domestic permissible exposure limit of trichloroethylene based on previous literature review. Materials and Methods: The research object is a trichloroethylene among 13 chemical substances regulated with PEL(Permissible Exposure Limit) in Occupational Safety and Health Act. The information utilized from this study is the work environment measurement data from 2004 to 2013. The highest level among concentration data measured at various workplaces was selected as a representative value through data process. N.D. (Not Detected) data was considered as 1/2 of LOD(Limit Of Detection). Results: Among work environment measurement data between 2004 and 2013, the highest number of excess workplace and excess rate(24 sites & 1.15%) was observed in 2008's data when applying the PEL(50 ppm) of trichloroethylene. When they are compared with the ACGIH's TLV-TWA(10 ppm), 2008's data showed the highest number of excess workplace and excess rate(175 sites & 8.37%). The number of excess workplace and excess rate related to PEL of trichloroethylene showed increase trend in 2005 but tended to decrease after 2008. Conclusions: Based on the results obtained from this study, the exposure level of trichloroethylene in case of domestic workers is not considered as a safe phase regardless of the year of work environment measurement year. Thus, a strictly preventive management in workplace should be provided for reducing exposure level of trichloroethylene.

Keywords

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Figure 1. Trend of yearly excess workplace for permissible exposure limit (50 ppm) of trichloroethylene which was applied to domestic workplace

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Figure 2. Trend of yearly excess workplace for ACGIH exposure limit of trichloroethylene

Table 1. The number and rate of excess workplace for permissible exposure limit (50 ppm) of trichloroethylene which was applied to domestic workplace

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Table 2. The number and rate of excess workplace for ACGIH exposure limit of trichloroethylene

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