세라믹 섬유 제조 및 가공 공정에서 발생된 공기중 섬유의 농도 및 크기 분포

• 영문명: Determination of Airborne Fiber Size and Concentration in RCF Manufacturing and Processing Factories
• 발행기관: 한국환경보건학회
• 저자명: 신용철
• 간행물 정보: 『1. 한국환경보건학회지』제26권 제4호, 21~28쪽, 전체 8쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2000.12.30

영문 초록

Various man-made mineral fibers(MMMF) including refractory ceramic fiber(RCF) have been used widely in industries as insulation materials. The effect of fibrous dust on human health depends on fiber size, concentration (exposure level), and durability in biological system. Therefore, these parameters should be determined to evaluate accurately the potential risk of fibers on human health. The purpose of this study was to characterize the size of airborne fiber and the workers＇ exposure to airborne fibers in refractory ceramic fiber manufacturing and processing factories. Airborne fibers were collected on 25-mm mixed cellulose ester membrane filters at personal breathing zones, and analyzed by A and B counting rules of the National Institute for Occupational Safety and Health(NIOSH) Method # 7400. The average ratios of the fiber density by B rule to the fiber density by A rule was 0.84. This result indicates that the proportion of respirable fibers (<3 ㎛ diameter) in air samples was high. The average diameter and length of airborne fibers were 1.05㎛ and 35㎛, respectively. The average fiber concentrations (GM) of all personal samples was 0.26f/cc, and the average concentration was highest at blanket cutting and packing processes. The fifty seven percent of personal air samples was exceeded the proposed American Conference of Governmental Industrial Hygienists(ACGIH) Threshold Limit Value(TLV), i.e. 0.2 f/cc. It was concluded that the RCF industrial workers had the higher potential health risk due to small fiber diameter, long fiber length, and high exposure level to the airborne fibers.

키워드

Man-made mineral fibers Refractory ceramic fiber Airborne fiber diameter and length Exposure to airborne fiber