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Evaluation of two negative-air glove bag techniques for asbestos removal.

Authors
Froehlich-PA
Source
Appl Occup Environ Hyg 1993 Oct; 8(10):871-882
NIOSHTIC No.
00216956
Abstract
The effectiveness of two negative pressure modified glove bag containment techniques in controlling occupational asbestos exposure was studied. The first system evaluated was an Aero Pipe Capsule consisting of a hard reinforced plastic glove box with a plastic bag sealed to its lower side which provided a receptacle for debris. The second containment apparatus was a custom fabricated negative air glove bag made from polyethylene film, gloves or glove inserts, spray adhesive, and tape. The efficiency of both systems was evaluated under conditions of actual asbestos removal by collecting and analyzing personal breathing zone samples by phase contrast and transmission electron microscopy. Exposures of workers to asbestos during removal activities were less than the OSHA permissible exposure limit and the NIOSH recommended exposure limit as determined by phase contrast microscopy using both abatement techniques. Based on transmission electron microscopic analysis, however, many asbestos structures that were not visible using phase contrast microscopy were identified and increases in asbestos fiber concentrations were seen in both areas using the different containment techniques. The authors conclude that the use of protective measures such as respiratory protection and protective clothing are necessary during asbestos removal operations even with the use of negative pressure glove bag containment techniques.
Keywords
NIOSH-Author; Asbestos-fibers; Asbestos-removal; Asbestos-workers; Occupational-exposure; Safety-measures; Safety-equipment; Protective-equipment
CODEN
AOEHE9
Publication Date
19931001
Document Type
Journal Article
Fiscal Year
1994
NTIS Accession No.
NTIS Price
Issue of Publication
10
ISSN
1047-322X
Source Name
Applied Occupational and Environmental Hygiene
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