Document 1QnL7Zq5nX88ZbqJ9vq8wVLjE

ThiviON MATERIALS STANDARD? INSTITUTE, INC., E-210 ROUTE 4. -PARAUUS, N. J. 07652 BULLETIN N 0. 5 8 1 October 12, 1976 CONTROL OF AIRBORNE ASBESTOS CONCENTRATIONS IN THE WORKPLACE -- INDUSTRIAL TYPE VACUUM CLEANERS Over the past many months, without de-emphasis on problems in the factory area, those in favor of stringent regulations on the use of asbestos have --targeted friction materials servicing--particularly braka~l fftlfg service-- as a potentially hazardous area. Technical papers in this area have not based observations on the OSHA standard's 8 hour time weighted average for fibers greater than 5 microns in length. Most papers have emphasized peak concentrations (as blowing brake lining dust from a used brake awaiting reline) and the fibers shorter than 5 microns in length. Based on discussions at the Asbustos Information Association resting in September, efficient vacuum cleaning systems should be of hblp not only in the factory but in the brake service area. ! have, therefore, enclosed sales literature from two manufacturers, along with the NIQSH (National Institute of Occupational Safety and Health) recommended procedures for asbestos brake and clutch servicing. Before distributing this information, I reviewed this data with Mr. 1. H. Weaver, acting Chairman of our Asbestos Study Committee, to be sure this information was worthwhile. He concurred that the following information was worthy of distribution to the membership: 1. NIOSH Reconmended (Interim) Procedures for Asbestos Brake and Clutch Servicing 2. NILFISK literature 2.1 NILFISK absolute filter 2.2 NILFISK manometer 2.3 Dust free disposal 3. TEMPO Brake and Clutch Service Vacuum This literature is being enclosed (one copy to each member) with the mailing to: c.VD/erc E. Drislane Executive Director cc-Active Members Regional '/.embers (Active Dues Level) Asbestos Study Committee ' xsco:-:;::.TM- ?;*ocsd*j?zs roa AS-c.5*C$ -..-.A',u r'i/ C.,1*TC1I SERVICING The National Ir.stitute for .Occupational Safety and Health (NIOSH) has research underway concerning dust exposures during brake and clutch servicing. Due zo preliminary data demonstrating significant asbestos exposures curing presently used brake and clutch servicing techniques* HIOSH has reviewed alternate techniques whereby asbestos exposures arc reduced. The following ere icteric procedures recommended by KIOSK to minimize dust exposures. 1. If possible* an- area shall be designated for all broke and dutch repairs. Seerancet into this area shell be posccd with as ssbestos exposure warning sign as followsJ Asbestos Dust Hazard Avoid Breathing jhist--____ ttear-Aasigned ? rotactive ^Equipment. ___ Do. Not Remain in Area Unless Your-tfork Requitee.lt Breathing Asbestos Dust Kay Cause Asbestos Is and Cancer 2. During brake servicing,, an air purifying respirator* either single use or with replaceable particulate fliter(s), as approved by the Klnlcg Enforcement and Safety Administration (formerly Bureau of Kicea) or KIOSK, shall be worn during all procedures starting with the removal of the wheels and including ^assembly. During manual dutch servicing, such a respirator shall be worn during reaoval and cleaning of the clutch* pressure plate and housing assembly end during instal lation of the nev dutch assesbly* 3. Dust shall first be cleaned from brake drxccs* brake backing plates* brake assemblies and clutch assemblies using en industrial type vacuum clear.cr equipped with a high efficiency filter system (>992 efficiency for 0.3 vn diameter aerosols)* After vacuum cleaning, any remaining dusc shell be removed using a rag soaked in voter and wrung until nearly cry* l-ndcr no circumstances shall compressed air or dry brushing be used for cleaning* A. During arcing and riveting operations, an approved respirator, as described in (2) above, shall be worn* Grinding (arcing) machines shall be provided with lotal exhaust ventilation such that worker exposures are maintained at lease bclcv the 1976 OSKA asbestos standard (29 CEa 1510,1001).* At a minimum* the dust bag of the arcing machine shall be removed and replaced with the hose of the high efficiency industrial vacuum described it (3) above. 5 Industrial vacuus 'clccncr bags containing asbestos dust and cloths used for wiping brake and clutch assemblies shall be scaled in plastic begs and labeled with the following warning label printed in letters ci sufficient else and contrast to be readily visible asd legible; Caution Contains Asbestos Fibers Avoid Breathing Dust Breaching Asbestos Dust May Cause Asbescosis and Cancer All asbestos vasts shall be disposed of in accordance with the OSHA asbestos regulation, 29 CFR 1910.1001(h) During removal of vacuum bags, an ' approved respirator, as described in (2) above, shell bo* worn. 6* All floor cleaning in areas where brakes and clutches are repaired shall be cone with the high efficiency industrial vscuua cleaner an-- described In (1) above. Grinding (arcing) aachlnea shall also be cleaned with such a vacua cleaner and.any remaining dust wiped with a damp cloth. An approved respirator, as described in (2) above, shall be used during this cleaning* 7. Although adherence to the above procedures should minimize any contamination of work-clothing, it is required chat the appropriate portions of the OSHA regulations on asbestos (29 CFR 1910.1001(d), (2 and 4)) concerning special clothing, change rooms, etc* be followed* HOTS: Strict adherence to the above procedures should minimize exposures to nechanfcs during brake and clutch servicing. These are interim reccmcenssticr.fi snd ere subject to revision pending results of ongoing KIOSK research. * Section 1910.1001 of the Code of Federal Regulations was formerly Section 1510.Sla. This change was noted in the Federal Register, May 13, 1575. Frsparcd By Division c Field Studios and Clinical Investigations National Institute for Occupational Safety end Health Cincinnati, Ohio