일부 업종의 용접흄 분석 및 폭로농도에 관한 연구

A study on the airborne concentration of welding fume for some manufacturing industries

  • 변상훈 (한국산업안전공단 산업보건연구원) ;
  • 박승현 (한국산업안전공단 산업보건연구원) ;
  • 김창일 (인천기능대학) ;
  • 박인정 (한국산업안전공단 산업보건연구원) ;
  • 양정선 (한국산업안전공단 산업보건연구원) ;
  • 오세민 (한국산업안전공단 산업보건연구원) ;
  • 문영한 (한국산업안전공단 산업보건연구원)
  • Byeon, Sang-Hoon (Industrial Hygiene Research Institute Korea Industrial Safety Corporation) ;
  • Park, Seung-Hyun (Industrial Hygiene Research Institute Korea Industrial Safety Corporation) ;
  • Kim, Chang-Il (Inchon Industrial Masters' College) ;
  • Park, In-Jeong (Industrial Hygiene Research Institute Korea Industrial Safety Corporation) ;
  • Yang, Jeong-Sun (Industrial Hygiene Research Institute Korea Industrial Safety Corporation) ;
  • Oh, Se-Min (Industrial Hygiene Research Institute Korea Industrial Safety Corporation) ;
  • Moon, Young-Hahn (Industrial Hygiene Research Institute Korea Industrial Safety Corporation)
  • 발행 : 1995.11.10

초록

The airborne concentrations of the welding fumes produced during $CO_2$ arcwelding process at shipbuilding, shiprepairing, container manufacturing and car accessary manufacturing industry were investigated. The effects how much reduced the welding fume were checked when the portable fan was used. The results were as follows; 1.The geometric mean of welding fume concentration in shipbuilding factory was $10.05mg/m^3$. This exposure concentration was higher than other 3 manufacturing industries at 95% confidence level. 2. The sampling filters for welding fume could be digested with acid within 1 hour by microwave oven. The recoveries for investigated metal elements were all over 95%. 3. The optimal wavelength could be selected for the simultaneous analysis of 8 metal elements by ICP(Inductively Coupled Plasma). 4. Noxious gases($O_1,NO_2$) produced during $CO_1$ gas arc welding process were detected that the concentration of ozone($O_1$) was less than 0.01 ppm and that of nitrogen dioxide($NO_2$) was 0.01-0.03 ppm. 5. The geometric mean of welding fume particle diameter was $1.26{\mu}m$ and geometric standard deviation was 1.51 for the counts when particle an analyzer(ELZONE) had been used. 6. When the portable fan had been used,the reduced percent of total welding fume for workers was about 47.8% when portable fan was applied to blow and 71.7% when to exhaust.

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