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Title: Industrial Hygiene Study-Removal Of Coaltar Wrap Containing Asbestos
Author: G. Lyn Berman
Source: American Gas Association 1990
Year Published: 1990
Abstract: Asbestos has been found to be prevalent in coal-tar-based pipewrap, which has been installed on distribution and transmission pipelines since early this century. Determination of the presence of asbestos can be done only through laboratory analysis. Concern for the potential employee exposure during removal of the wrap and for the environmental impact of the disposal of the wrap has led to industrial hygiene studies for the presence of asbestos fibers during wrap removal. The wrap removal jobs studied have all been large scale removals, that is, more than 100 square feet of wrap to be removed. The jobs were monitored for the presence of asbestos fibers. Background samples, area samples, and employee time-weighted averages (TWA) were calculated. National Institute of Occupational Safety and Health (NIOSH) 7400 method was used to collect and analyze these samples.

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