• Title/Summary/Keyword: 용접흄

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Health Risk Factors and Ventilation Improvements in Welding Operation at Large-sized Casting Process (대형 주물공정 용접작업장의 건강 위해인자 및 환기 개선)

  • Jung, Jong Hyeon;Jung, Yu Jin;Lee, Sang Man;Lee, Jung Hee;Shon, Byung Hyun;Lim, Hyun Sul
    • Clean Technology
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    • v.20 no.2
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    • pp.171-178
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    • 2014

  • In this study we have examined the health risk factors and analyzing data of laborers working at the welding operation at large-sized casting process. In order to improve the working environment of workplace, an effective ventilation method was proposed after performing CFD (computational fluid dynamics) modeling and measurement of pollutants. As a result of examining the health risk factors of workers, oxidized steel dust is the main pollution source in the company A, welding fume in the companies B and C, and welding fume and oxidized steel dust in the company D. The fume concentration in the workers' breathing zone was $0.05{\sim}4.37mg/m^3$, and the fume concentration in the indoor air at the welding process was $0.13{\sim}7.54mg/m^3$. From a result of CFD, a local exhaust with an exhaust duct adjacent to welding point was found to be most effective in case of the exhaust process. In case of air supply, we found that a desired location of air supply fan would be at the end of the opening. If a standardizing the ventilation system for tunnel-type semi-enclosed space at a large-sized casting process is introduced in welding work places in the future, it would be more effective to protect the health of welding workers working at the casting industry and shipbuilding industry and improve the work environment.

  • https://doi.org/10.7464/ksct.2014.20.2.171 인용 PDF KSCI

Effects of Heavy Metal Fumes from Welding Fume Generating System on the Micronucleus Frequencies in Tradescantia (용접흄 발생기에서 발생된 중금속 흄이 자주달개비의 미세핵생성률에 미치는 영향)

  • 신해식;김진규;유일재;성재혁;이재환;이진홍;이대운
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.461-462
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    • 2003

  • 산업의 발달과 함께 자연의 자정능력 한계를 넘어선 오염은 인간의 생존을 위협하는 심각한 사회문제로 대두되기에 이르렀다. 지금까지 대기오염에 대한 관심은 주로 실외대기, 즉 건물의 바깥쪽에 있는 대기오염에 편중되어 있었다. 대도시 및 중ㆍ소 공업 도시 등 대기오염이 문제되는 지역에서의 하루 생활은 하루 24시간 중 80％이상을 실내 공간에서 생활하고 있어 다양한 직업을 가진 현대인은 개인에 따라 다소 차이가 있지만 대기오염의 영향보다는 하루 중 많은 시간을 보내는 실내오염의 영향을 더 많이 받는다. (중략)

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Flow and Structural Analysis at Welding Fume of Automatic Gantry Robot - CFD/CAE and Automatic Convergence Study - (자동 겐트리 로봇의 용접 흄 유동 및 구조해석 - CFD/CAE 및 자동화 융합 연구 -)

  • Jang, Sung-Chul
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.11 no.6
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    • pp.158-163
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    • 2012

  • This study investigates numerical analysis for robot welder fume flow and gantry structure. The solvers are STAR-CCM+ and ANSYS workbench used on flow and structural analysis. The results show that fume is diffused in factory when the welding fume is remove at dust collector. But dust collector intercepts the fume diffusion into workroom by removing most of welding fume. Structure analysis result shows that the reinforcement rod is evaluated to main the safety by supporting sufficient structure.

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