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

Korean Industrial Hygiene Association (한국산업보건학회)
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A Study on the Factors Affecting Asbestos Exposure Level from Asbestos Abatement in Building Demolition Sites

석면 해체·제거시 공기 중 노출수준과 영향요인

  • Kim, Ji-Yeong (Institute of Industrial Health, Daegu Haany University) ;
  • Lee, Song-Kwon (Faculty of Health Science, College of Health & Therapy, Daegu Haany University) ;
  • Lee, Jeong Hee (Faculty of Health Science, College of Health & Therapy, Daegu Haany University) ;
  • Lim, Mu Heok (Institute of Industrial Health, Daegu Haany University) ;
  • Kang, Sungwook (Faculty of Health Science, College of Health & Therapy, Daegu Haany University) ;
  • Phee, Young Gyu (Faculty of Health Science, College of Health & Therapy, Daegu Haany University)
  • 김지영 (대구한의대학교 산업보건연구소) ;
  • 이송권 (대구한의대학교 보건치료대학 보건학부) ;
  • 이정희 (대구한의대학교 보건치료대학 보건학부) ;
  • 임무혁 (대구한의대학교산업보건연구소) ;
  • 강성욱 (대구한의대학교 보건치료대학 보건학부) ;
  • 피영규 (대구한의대학교 보건치료대학 보건학부)
  • Received : 2008.12.16
  • Accepted : 2009.02.20
  • Published : 2009.03.31
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Abstract

This study was examined to find out asbestos exposure level the factors which affected the level at asbestos abatement sites. We visited a total of thirteen building demolition sites(3 apartments, 3 schools, 4 stores, and 3 houses) were visited to collect samples and related data from August to November, 2006. The results of this study were as follows 1. The results of an analysis of bulk samples to identify types of asbestos at the asbestos abatement sites showed that the kinds of the asbestos detected were chrysotile by 50.0%, were tremolite by 2.6%, and were the contents of chrysotile by 3 to 20%. 2. The geometric mean concentration of asbestos was 0.007 f/cc(range 0.001-0.34 f/cc) and its geometric standard deviation was 5.83. Of the samples, however, 12 exceeded the Korean Occupational Exposure Limit(0.1f/cc). 3. Of the materials, textile material had the highest concentration with geometric mean of 0.016 f/cc. When asbestos-containing materials were removed using T type tools, the geometric mean concentration of asbestos was 0.061 f/cc. The level by this method was much higher than by other removal methods. In analysis by the type of building, the geometric mean concentration of asbestos in stores was 0.042 f/cc and was higher than in other buildings. 4. The Poisson regression analysis was applied to find out the factors that affect the airborne asbestos concentration. As a result of the analysis, removal using a T type tool was the most important factor affecting the asbestos concentration(p<0.01). In conclusion, the airborne asbestos concentration(geometric mean) in asbestos abatement sites was 0.007 f/cc(0.001~0.34 f/cc), and 12(14.6%) of all samples were over the 0.1 f/cc. These results showed that asbestos abatement workers have been exposed to the high level of airborne asbestos because they have not been keeping asbestos removal rule. In accordance with increases of the number of building demolition sites, the better government regulation on asbestos abatement methods should be made and be performed well at building demolition sites.

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References

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