HHE Report No. HETA-94-0122-2578, Bath Iron Works Corporation, Bath, Maine.
NIOSH 1996 May:24 pages
In response to a request from the Bath Iron Workers Corporation (SIC- 3731), Bath, Maine, the accuracy of personal air monitoring during abrasive blasting in confined spaces was evaluated. The facility was a large shipyard on the coast of Maine employing about 9,000 workers. Operations at the site were primarily involved with construction of US Navy destroyers. Blasters wore personal protective equipment including gloves, boots, coveralls, and a continuous flow supplied air blast hood. Personal breathing zone samples were collected using a standard closed face cassette, a closed face cassette with a metal guard, and a nylon cyclone. The NIOSH sampling and analytical methods did not accurately represent worker exposure to lead (7439921) and other elements during abrasion. The methods were inaccurate due to the abrasive blasting grit which entered the cassette inlet due to its high velocity, rather than being collected on the filter as an airborne contaminant in an air sample of known volume. The sampling conducted during this visit indicated that accumulation of steel grit in sampling cassettes produced results which overestimated the concentration of inhalable lead particulate. A need was noted for a sampling analytical method that can provide an accurate estimate of exposure to airborne lead and other elements.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-94-0122-2578; Hazard-Unconfirmed; Region-1; Air-quality-monitoring; Sampling-equipment; Air-sampling; Airborne-particles; Shipyards; Confined-spaces;
Hazard Evaluation and Technical Assistance;
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-94-0122-2578, 24 pages, 35 references