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

Korean Industrial Hygiene Association (한국산업보건학회)
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Airborne Concentrations of Welding Fume and Metal Components by Type of Welding

용접작업 형태별 공기중 용접흄 농도와 금속 성분에 관한 조사연구

  • Lee, Kwon Sup (Division of Industrial Health, School of Public Health, Seoul National University) ;
  • Paik, Nam Won (Division of Industrial Health, School of Public Health, Seoul National University)
  • 이권섭 (서울대학교 보건대학원 산업보건과학교실) ;
  • 백남원 (서울대학교 보건대학원 산업보건과학교실)
  • Published : 1994.05.31
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Abstract

This study was conducted to evaluate worker exposure to welding fume in automobile body shop and to evaluate metal components by type of welding. The results are summarized as follows: 1. Average concentrations of total welding fume without and with ventilation were $5.2mg/m^3$ and $2.49mg/m^3$, respectively. Thus, the average reduction rate of total fume by ventilation was 52.1 %. 2. The highest fume concentration was indicated at shielded arc welding, followed by $CO_2$ gas welding, argon arc welding, and spot welding in order of decreasing concentration. 3. Average respirable fume concentrations without and with ventilation were $2.97mg/m^3$ and $1.64mg/m^3$, respectively. 4. Further analysis of welding fume indicated that total fume consisted of $Fe_2O_3$, ZnO, Mn, Pb, and CuO, in order of decreasing amount. Combined effect of metals was below the American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Values (TLVs).

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