Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)
- Volume 3 Issue 2
- /
- Pages.152-165
- /
- 1993
- /
- 2384-132X(pISSN)
- /
- 2289-0564(eISSN)
A Study on Worker Exposure to Hexavalent Chromium in Plating 0peration
중소기업 도금공정에서의 6가 크롬 폭로에 관한 연구
- Cheong, Hoe Kyeong (School of Public Health, Seoul National University) ;
-
Paik, Nam Won
(School of Public Health, Seoul National University)
- Published : 1993.11.30
Abstract
This study was performed at eleven small-sized plating factories located in Seoul, Incheon, Ansan, and Taejeon from July 21 to October 6, 1992. The major objectives of this study were to evaluate worker exposure to hexavalent chromium and local exhaust ventilation (L.E.V.) systems at the chromium plating operations. The most suitable L.E.V. systems for chromium plating tanks were designed as examples for recommendation to the industry. The results are summarized as follows. The range of chromium plating operations investigated included decorative, hard, and black chromium plating on several kinds of parts. Most of plating tanks were not equipped with proper control methods against emission of hexavalent chromium mists and workers were not wearing appropriate personal protectives. The ariborne hexavalent chromium concentrations showed an approximate lognormal distribution. The geometric means of both personal and area samples were within the Korean and ACGIH standards,
Keywords
- Hexavalent Chromium;
- Chromium Plating Operation;
- Lognormal Distribution;
- Local Exhaust Ventilation System;
- Boundary Layer Separation;
- Push-Pull Ventilation;
- Downward Plenum Ventilation