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Control of asbestos exposure during brake drum service.

Authors
Sheehy-JW; Cooper-TC; O'Brien-DM; McGlothlin-JD; Froehlich-PA
Source
NIOSH 1989 Aug; :1-78
NIOSHTIC No.
00197233
Abstract
An evaluation was undertaken of various control measures used to help cut down the exposure of automobile mechanics to asbestos (1332214) fibers during the servicing of brakes. Five facilities employing five methods to control asbestos exposure were part of the initial evaluation. These control methods included the use of two commercial enclosure devices with ventilation provided by a HEPA filter equipped vacuum, a HEPA filter equipped vacuum alone, a brush with recirculating cleaning solution, and cleaning solvents in aerosol cans. During the servicing of brakes on automobiles, pickup trucks, vans, and vehicles with a four wheel rear axle, measurements were taken using traditional air sampling methods, incorporating phase contract microscopy and transmission electron microscopy and real time analysis of brake dust exposure. All the devices tested, in combination with the work practices used, controlled the exposure of the mechanic to asbestos fibers during brake servicing to less than the recommended limits. The exposures reported in this evaluation were much lower than those reported in the literature for brake service operations involving the use of compressed air and brush cleaning. Recommendations were made for improved work practices and modifications to the control systems.
Keywords
NIOSH-Author; Asbestos-fibers; Airborne-fibers; Occupational-exposure; Automobile-repair-shops; Automotive-industry
CAS No.
1332-21-4
Publication Date
19890801
Document Type
Numbered Publication
Fiscal Year
1989
NTIS Accession No.
PB90-168501
NTIS Price
A06
Identifying No.
(NIOSH) 89-121
NIOSH Division
DPSE
Source Name
National Institute for Occupational Safety and Health
State
OH
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