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Title: Asbestos exposure among mitering workers
Authors: Wantanee Phanprasit
Dusit Sujirarat
Pirutchada Musigapong
Penpatra Sripaiboonkij
Chalermchai Chaikittiporn
วันทนี พันธุ์ประสิทธิ์
ดุสิต สุจิรารัตน์
เฉลิมชัย ชัยกิตติภรณ์
Mahidol University. Faculty of Public Health. Department of Occupational Health and Safety.
Mahidol University. Faculty of Public Health. Department of Epidemiology.
Wantanee Phanprasit
Keywords: Asbestos;Cement sheets;Mitering;Construction;Exposure;Open Access article
Issue Date: Sep-2012
Citation: Safety and health at work. Vol.3, No.3 (2012), 235-240
Abstract: The objectives are to compare the airborne asbestos concentrations resulted from mitering of abestos cement roof sheets by a high-speed motor and a hand saw, and to monitor whether other workers near the test sites are vulnerable to the fibers exceeding the occupational exposure limit. Four test cases were carried out and altogether 7 personal and 4 area air samples were collected. The NIOSH method 7400 was employed for the air samplings and analysis. Using the phase contrast microscopy, fiber counting was conducted under Rule A. The study showed that the fiber concentration medians for personal air samples gathered from the two tools were 4.11 fibers/cc (ranged: 1.33-12.41 fibers/cc) and 0.13 fibers/cc (ranged: 0.01-5.00 fibers/cc) respectively. The median for the area samples was 0.59 fibers/cc (ranged: 0.14-3.32 fibers/cc). Comparing each study case, the concentration level caused by the high-speed motor saw was more than twice that of the hand saw. According to the area samples, the workers nearby the test site are at risk from high exposure to asbestos.
ISSN: 2093-7997 (Electronic)
2093-7911 (Linking)
Appears in Collections:PH-Article

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