2 edition of Control of asbestos exposure during brake drum service found in the catalog.
Control of asbestos exposure during brake drum service
National Institute for Occupational Safety and Health. Division of Physical Sciences and Engineering
by U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, For sale by the Supt. of Docs., U.S. G.P.O. in Cincinnati, Ohio, Washington, D.C
Written in English
|Statement||John W. Sheehy ... [et al.]|
|Series||DHHS (NIOSH) publication -- no. 89-121, DHHS publication -- no. (NIOSH) 89-121|
|The Physical Object|
|Pagination||viii, 70 p. :|
|Number of Pages||70|
1. Author(s): Sheehy,John W Title(s): Control of asbestos exposure during brake drum service/ John W. Sheehy [et al.]. Country of Publication: United States Publisher: Cincinnati, Ohio: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, Division of Physical Sciences and Engineering. Rohl AN, Langer AM, Wolff MS, Weisman I. Asbestos exposure during brake lining maintenance and repair. Environ Res. Aug; 12 (1)– Wagner JC, Berry G, Timbrell V. Mesotheliomata in rats after inoculation with asbestos and other materials. Br J Cited by:
duty trucks, have disc brakes on the front wheels and drum brakes on the rear wheels which 5)help control their movement. Asbestos containing brake lining are gener-ally found in cars, light and heavy-duty 6,trucks. Motor vehicle brakes typically require repairment or replace-ment 1)ev km. Asbestos fibers speciallyCited by: During brake repair an unknown number of approximately , mechanics in automobile service stations are exposed to asbestos dust. In a field study, asbestos fiber concentrations during brake repair were measured. Occupational histories and chest X‐rays of brake service Cited by:
Mechanics and anyone else in a garage where brake and clutch work are done may be exposed to asbestos dust. Some brake dust can be seen when a brake drum removed from a car, truck, or other equipment. As a best practice, OSHA states that mechanics should assume that all brakes have asbestos-type shoes. Worn non-asbestos-type brakes cannot be readily distinguished from asbestos-type shoes. If a mechanic assumes incorrectly that a shoe is a non-asbestos type and fails to utilize brake dust control procedures, increased asbestos exposure may.
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Presents recommendations for engineering controls and Control of asbestos exposure during brake drum service book practices to reduce exposure to asbestos during brake maintenance operations.
Control of Asbestos Exposure During Brake Drum Service Cdc-pdf [PDF – 2, KB]. used, controlled the mechanic's asbestos exposure during brake servicing to less than the OSHA PEL and the NIOSH REL. The personal exposures to asbestos determined in this study were much lower than those reported in the literature for brake service operations involving the use of compressed air and brush Size: 2MB.
Control of Asbestos Exposure During Brake Drum Service U.s DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service • Centers for Disease Control National hstitute for Occupational Safety and Health. Earlier studies of airborne asbestos exposure to mechanics during brake maintenance operations showed overexposure to asbestos fibers during brake servicing, especially brake assembly cleaning.
Because an estimatedbrake mechanics and garage workers in the U.S. are potentially exposed to asbestos, a known carcinogen, and the lack of information available on the effectiveness of available controls.
Control of asbestos exposure during brake drum service. Cincinnati, Ohio: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, Division of Physical Sciences and Engineering ; Washington, D.C.
Earlier studies of airborne asbestos exposures to mechanics during brake maintenance operations showed overexposure to asbestos fibers during brake servicing, especially brake assembly cleaning. Most brake service operations are performed by small businesses that lack resources to evaluate control by: asbestos exposure when replacing brake drums, shoes or pads 2.
The breaking, cutting, drilling, abrading, grinding or sanding of brake pads where they are wetted to control the spread of dust or fibres, and the work is done only by means of non-powered hand-held tools.
An evaluation was undertaken of various control measures used to help cut down the exposure of automobile mechanics to asbestos () fibers during the servicing of brakes. Five facilities employing five methods to control asbestos exposure were part of the initial evaluation.
Control methodologies, when used appropriately, have reduced exposure to asbestos during brake servicing, but have not been able to entirely eliminate exposure to asbestos, thus bring into question the controlled use of asbestos for friction product such as by: Specific brake servicing operations studied included blow-out of automobile drum brake assemblies, grinding of used truck brake linings, and bevelling of new truck brake linings.
Average peak asbestos air concentrations for these three activities based on personal samples taken within ten feet of the operator were, respectively, and. Data obtained on asbestos exposure of garage mechanics during brake lining maintenance and repair work show that fiber concentrations frequently in excess of regulated limits are common.
The presence of chrysotile, ranging from 2 to 15%, in brake drum dusts, was demonstrated by X-ray diffraction, transmission electron microscopy, selected area Cited by: Control of Asbestos Exposure During Brake Drum Service. U.S. Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No.
(August ). Presents recommendations for engineering controls and work practices to reduce exposure to asbestos during brake maintenance operations. per week, the mechanic/technician may control potential asbestos exposure through the use of a spray bottle, hose nozzle, or any implement capable of delivering a fine mist of water or amended water at low pressure to wet down the drum or clutch housing before removing it and to control asbestos fiber release during subsequent activities.
However. Asbestos () exposure levels experienced by automobile mechanics using various control techniques during maintenance and replacement of drum brakes were determined.
The study focused on vehicles with brake drum sizes of 12 inches or less. Five methods for controlling exposure to asbestos during brake repair were evaluated. wheel brakes remained mainly of the drum variety. Chrysotile asbestos was used almost exclusively, as the amphibole asbestos type tended to be too harsh and tended to score the brake drums, making them wear much faster.
The chrysotile made up from 40 to 50% of the brake lining [Sheehy et al., ]. Decomposition of Asbestos Fibers in BrakesFile Size: KB. Asbestos During Brake and Clutch Service Work Self-Inspection Checklist.
Guidelines: This checklist covers Occupational Safety and Health Administration (OSHA) asbestos regulations (29 CFR ).
This checklist focuses on the most common exposure situation in schools--brake and clutch service work on motor vehicles.
The two preferred OSHA methods to control asbestos dust during brake and clutch repair and service are: (1) a negative pressure enclosure/HEPA (high-efficiency particulate air) vacuum system, and (2) the low pressure/wet cleaning method. Control of asbestos exposure during brake drum service / By National Institute for Occupational Safety and Health.
Division of Physical Sciences and Engineering. Fibers with lengths greater than or equal to 5 microns constituted less than 1% of all chrysotile fibers counted in brake drum dust. Short-term asbestos dust exposures were measured by light microscopy in personal samples during blowing out of brakes, and grinding and turning of brake by: ().
Exposure to asbestos during brake maintenance. Ann Occup Hyg Kakooei, H; Hormozy, M; Marioryad, H. Evaluation of asbestos exposure during brake repair and replacement. Ind Health Kauppinen, T; Korhonen, K.
Exposure to Asbestos During Brake Maintenance of Automotive Vehicles by Different Methods. Otherwise, excessive exposure to asbestos may occur during the removal of the brake drum. If it is not possible to thoroughly wet the brake parts with solvent before performing a difficult brake drum removal, then the spray can/solvent system is not an acceptable method for that particular job.
We appreciate the opportunity to provide assistance.The estimated average asbestos exposure during the workday (8-hr time-weighted average) was fibers/cm3 during brake repair of trucks or buses, and under f/cm3 during repair of passenger car brakes when the background concentration was not included in the by: Exposure to asbestos during brake maintenance.
Ann Occup Hyg. Jan; 13 (1)– Hatch D. Possible alternatives to asbestos as a friction material. Ann Occup Hyg. Jan; 13 (1)– Knight KL, Hickish DE. Investigations into alternative forms of control for dust generated during the cleaning of brake assemblies and drusm.