In-Depth Survey Report: Control Technology for Asbestos Removal at Washburn Elementary School, Cincinnati, Ohio

摘要

The effectiveness of the glove bag control method to prevent exposure to asbestos (1332214) during removal of asbestos pipe lagging from the Washburn Elementary School (SIC-1799) in Cincinnati, Ohio, was evaluated. During the work, the method appeared to function well in controlling worker exposures to asbestos fibers. It is recommended that workers use respiratory protection on any glove bag work due to possible leakage. During removal operations, asbestos fiber concentrations rose from a preremoval level of 0.002 fibers per cubic centimeter (f/cc) to 0.020f/cc during preparation of pipe lagging for removal and to 0.289f/cc during actual removal in glove bags. These workers had limited experience with the glove bag technique; the authors suggest that this is common for individuals required to use the method. The authors conclude that a secondary containment system should be used as an adjunct to the glove bag treatment, such as negative air barriers.