Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)
- Volume 4 Issue 1
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- Pages.81-95
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- 1994
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- 2384-132X(pISSN)
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- 2289-0564(eISSN)
A Study Evalucation of Worker Exposure to Diatomaceous Earth Dust and Engineering Control in a Diatomite Factory
모 규조토 가공업체의 규조토 분진 폭로평가 및 개선방향에 관한 연구
- Cheong, Hoe Kyeong (Department of Preventive Medicine, College of Medicine, Dongguk University) ;
- Kim, Ji Yong (Department of Preventive Medicine, College of Medicine, Dongguk University) ;
- Cheong, Hae Kwan (Department of Preventive Medicine, College of Medicine, Dongguk University) ;
- Lim, Hyun Sul (Department of Preventive Medicine, College of Medicine, Dongguk University)
- 정희경 (동국대학교 의과대학 예방의학교실) ;
- 김지용 (동국대학교 의과대학 예방의학교실) ;
- 정해관 (동국대학교 의과대학 예방의학교실) ;
- 임현술 (동국대학교 의과대학 예방의학교실)
- Published : 1994.05.31
Abstract
This study was performed in a diatomite factory where silicosis had been found at October, 1993. The major objectives were to evaluate worker exposure to diatomaceous earth and to present engineering control methods for workplace management. Total and respirable dust of diatomaceous earth were measured. Size distribution of dust was analyzed by applying the multiple diffraction method. Also crystalline silica in respirable dust samples was analyzed qualitatively by X-ray diffraction. The suitable Local Exhaust Ventilation systems for that factory were recommended. The results were as follows. The airborne total and respirable dust concentrations by exposure groups showed approximate normal distribution. The means of total dust exposures at flour maufacturing, fire brick grinding and packaging, ceramic raws packaging processes exceeded Korean and ACGIH standards,
Keywords
- Diatomaceous Earth;
- Silicosis;
- Respiable Dust;
- Size Distribution;
- Crystalline Silica;
- Multiple Diffraction;
- X-ray Diffraction;
- Local Exhaust Ventilaton