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KMID : 0895420070170030245
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Journal of Korean Society of Occupational and Enviromental Hygiene
2007 Volume.17 No. 3 p.245 ~ p.253
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An Evaluation on Airborne Particulate and It`s Components in the Welding Workplace for the Ship Construction Industry
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Kang Yong-Seon
Sin Joong-Kyu
Lee Song-Kwon
Yoon Chung-Sik
Lim Moo-Hyuk
Park Man-Chul
Sim Sang-Hyo
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Abstract
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This research was performed to evaluate the airborne personal concentration of hazardouse materials during the
process of ship construction and surveyed from May 23 to June 30, 2007 in Kyungnam West Distirct, Korea. The subject was 94 ship construction workers exposed to welding fume and respirable particulate. The airborne concentrations of those were compared to Permissible Exposure Limit(PEL) from the Ministry of Labor in Korea. The airborne concentration of 23 samples(48.9%) of welding fumes was less than 5㎎/㎥, that of 16 (34.0%) was between 5 and 10㎎/㎥, and that of 8 (17.0%) was greater than 10㎎/㎥. The airborne concentration of 27 (57.4%) of respirable particulate masses was less than 5㎎/㎥ and the othere are greater than 5 ㎎/㎥. The welding fumes were identified containing the heavy metasl such as Fe, Mn, Zn, Mg, Ca, and Cu. The respirable particulates has similiar tendency with welding fumes in the component of heavy metals. But the concentration of Ca, Cu, Cr, and Ni turned out to be higher in welding fumes. Twenty (42.6%) of the 47 samples of welding fumes were exceeded PEL. In the heavy metals in welding fumes, ten (21.3%) of the 47 samples of Mn were exceeded PEL. Based on the results, the higher airborne hazardous materials were still exposed to wokers in ship construction process. It is suggested that the appropriate engineering control be applied to minimize the exposed cocnetration in ship building processes.
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KEYWORD
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Composition and concentration of welding fumes, Metals, Evaluation method
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