Health hazard evaluation report: HETA-84-321-1590, asbestos shingle tear-off, Rockford, Illinois.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 84-321-1590, 1985 May; :1-9
Breathing zone samples were analyzed for asbestos (1332214) during removal of an old asbestos shingle roof (SIC-1761) from a residential building, Rockford, Illinois in May, 1984. The evaluation was requested to assess asbestos exposures during removal operations. Airborne asbestos fiber concentrations ranged from 0.04 to 0.16 fiber per cubic centimeter (cc) for five tear off workers, fiber/cc for five workers applying new shingles. The OSHA standard for asbestos is 2.0 fiber/cc. A bulk sample of the asbestos shingle was analyzed and found to contain 30 percent chrysotile (12001295). NIOSH certified half/face respirators with high efficiency particulate filters were worn by all members of the tear off and cleanup crews. The author concludes that since the NIOSH criteria for asbestos exposure is the lowest feasible concentration, a hazard from airborne asbestos fibers existed during the roof removal operation. Recommendations include wetting the roof before beginning removal, evacuating the building occupants if feasible, sealing off all doors, windows, and other openings, removing all work clothes before leaving the site, and laundering them separately.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Confirmed; Asbestos-industry; Region-5; Exposure-limits; Asbestos-dusts; Air-monitoring; HETA-84-321-1590;
Author Keywords: Roofing and Sheet Metal Work; Asbestos Shingles; Roofing Tear-Off Operations
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health