Document rx10OOy1vq8OvKQaa1E7nM5qr

l I j I October ll, 1974 Mr. E. M. Fenner, Director Technieal. ftolat.iDns Envirom:lent&l Atfairs Dept,. Johne-Man-dlle Corp. P. O. Box 5108 Denver, Colora.do 802.1.7 Attached is copy ot rough dratt. ot recommendeci writ practices tor users and t&br1catore or ubeatoe friction ter-i&le tol.l.owing the format uaed by Larq 1-t>od,y 1n preparing a1mj 1ar work pract.ices tor u'beetoe textUea. This ie being reviewed by other 118D!bere of the Friction Hat.erial.a Standards Institute ABbeGtoS St.~ Ccmmittee, which I ipe will provide turt.her input tor the revised draft of this l.iat ot 1"8C0111181ldat1Qfta. The actual work practices are included in Sections 5 and 6, items 3,4 and 7 and would be pract.i~ the same tor all &ebeetoe products. Ple&ee reView the at.ta.ched and advi.ee me by Wedneadq, October 16, it 81V change ehould be made in th1e tOl"'''at belore I prepare t.be reviaed. draA ot ~ Friotion M&teri&l.e Work Pr&ct1cee and the practices tor ot.bw products I am supposed to lil&1l to )'OU Frida1'1 the 18th. I. H. Weaver w cc-Meesre. J. H. Marsh C. Clarke, Bendix Con> E. A. Drielane, nt.Sl l attach. FMSI 06733 r:1. - I l fiOU~ U.(U";~-l NoT t=ctl.- C.l~cnw~T~~ Recommended Work Practices for Users and Fabricators of Asbestos Friction Naterials Introduction This recommendation of "\.York Practices" is prepared by the Standards and Technical Committee of the Asbestos Information Association/North America, working with the Occupational Safety and Health Department, Office of Health Standards. The intent is to advise manufacturers and fabricators, who use asbestos friction materials, in manners of Work Practice best suited to the maintaining a working environmental atmosphere within the levels required by 1910.93a of the OSHA Standards. 1. Asbestos Friction }~terial Products covered bythis work practice recommendation. 1.1 Clutch Facings 1.2 Brake Lining Segments 1.3 Disc Brake Pads 1.4 Brake Band }sterials 1.5 Automatic Transmission Discs 2. Manufacturing Operations wherein the recommended work practices may apply. 2.1 Clutch Assembly and Rebuilding Operations 2.2 Brake Assembly and Relining Operations 2.3 Automatic Transmission Assembly and Rebuilding Operations f!:-Ti;--"":1:c:l.Cl.Jr,so<amJ~~3---:WJ.O\*-s:l;.l!;b..3..~i.Hl-fk.~..W:lll!;.t..I'U-C:.r.J:eF!-Et}ttipnrei rt 3. Requirements of OSHA Standard 1910.93a 3.1 The Asbestos Standard (l910.93a) applies to any manufacturing, fabrication or handling process etc. wherein an article composed wholly or in part of asbestos fibre is concerned. 3 .2 It is the employer 1s responsibility to maintain "Exposure to airborne concentration of asbestos fibres" at or below the levels described in 1910.93a. Exposure levels may be controlled by, Isolation, enclosure, exhaust ventilation and dust collection. The Standard 1910.93a does not limit the means used to maintain compliance. 3.3 Particular tools -All hand or power operated tools which may cause the release of asbestos fibre to become airborne at levels in excess of the standard shall be provided with exhaust ventilation. 3.4 Wet Methods - Hhen practicable asbestos friction material products shall be processed, wetted sufficiently to prevent ewission to working atmosphere. (Limited or not required vrhere wetting of the product v1ould reduce end efficiency of that product. 3.5 Protective Equipment and Clothing -At such times that it is necessary for employees to perform their normal work in an environment wherein the airborne concentration of asbestos fibre exceeds the allowable level of standa~d l910.93a, the employer must provide FMS\ 06734 .t respiratory protection and clothing in compliance with the standard. The employer must also provide change rooms and separate lockers for work clothes and street clothes. 3.6 Air Sampling and l1onitoring - The employer is responsible as described in 1910.93a .3. 7 Storage and Handling - It is reconunen_ded that asbestos-containing products be stored in sealed containers, etc. During periods of time that it is necessary to handle asbestos-containing products, the handling shall be done in a manner to create the least amount of airborne asbestos dust. 4. Exhaust and Dust Collection Systems. 4.1 Wherein exhaust and dust collection systems are used to attain concentrations of airborne asbestos fibre below the levels allowed in standard 1910.93a, the s7stems should be inspected and cleaned weekly.: 4.2 The design of exhaust and dust collection systems (installation and maintenance) shall be in accordance with American National standard (ANSI z 9.2)F~n-b....L~t.. G-a-tt~r~r--~o~~~ ~ s~Vl-.' .n. .i!.f<.Vvv-aLv:l /~..L . 5. Housekeepmg, in Nanu'tacturing and Fabrication areas. 5.1 All surfaces, machinery, equipment etc. shall be kept free of any accumulation of asbestos dust, lint and waste, preferable by vacuum cleaning methods or other method that will prevent asbestos dust or ribre from becoming airborne. Vacuum cleaners should be equipped witt a disposable collection bag and a microfilter . 5.2 lvaste and scrap material, such as dust, chips, off-cuts, edge trimmings and broken pieces shall be placed in tightly sealed containers in preparation for disposal. 5.3 Containers used to store or dispose of asbestos-containing materials shall be labeled in a manner to comply with standard 1910.93a. 6. Procedure recommendations for manufacturing and fabrication operations involving asbestos friction materials. F~A.St(I,J... 6.1 Vlherever ~.-ble, friction materials that are specially treated to reduce dust emission should be used. 6.2 Haterials should be removed from containers eently and handled with care to avoid unnecessary generation of airborne dust. Care should be taken not to disturb dust remaining in containers and packaging materials. Such dust should be removed by vacuum cleaning wherever possi~l~. F~A.>.tt..C FMSI 06735 .I ! I fl I I Fffi.S.IbLE" 6.3 Whenever pass~, materials should be obtained from the . manufacturer cut, machined and/or drilled to suit final requirements to avoid necessity for additional fabricationoperations. 6.4 On large volume operations with fixed working points or machines, local exhaust systems should be installed in accordance with American National StandardANSI Z9.2 or equivalent. 6.5 When cutting, drilling, grinding or machining operations are of short duration, portable dust exhaust units rnay be suitable. Vacuum cleaning equipment sometimes may be adapted for this purpose, provided the filer system is of adequate efficiency. 6.6 Where dust control by means of local exhaust is not feasible, flooding of the work and the tooling with water or other liquid may be effective in suppressing dust emission. 6.7 Swarf and dust should be removed regularly, preferably by vacuum_methods, and disposed of in accordance with paragraphs 5.2 and 5.3.., 6.8 If surface dust is present on materials, it may be necessary to remove it by wiping with a damp cloth or mop or by vacuum cleaning with a brush head attachr.P-nt prior to performing secondary operations such as riveting, bonding~ branding, inspection, etc. 6.9 In exceptional cases where it is impracticable to control airborne dust by means of an exhaust system or by wet processing, workers must be protected by approved respirators and protective clothing. ?. Personal Protection. 7.1 Develop good person& hygiene practices. Washing thoroughly before eating will prevent ingestion of foreign matter. Food should not be stored or eaten in the work area. ?.2 It is well documented that smoking is injurious to your health. vlhen coupled ,rith asbestos dust problems, the effects are accentuated. Smoking should be avoided! 7.3 Use of approved respirators should be encouraged wherever measurable airborne asbestos dust concentrations exist, ~d_use of such respirators shall be mandatory wherever airborne fibre limits exceed those prescribed in Standard l910.93a. Protective clothing shall be provided and v10rn wherever employees are exposed to ceiling levels exceedL~g those prescribed in Standard 1910.93a. Employees must be given thorough instruction in proper use, care and maintenance of personal protection equipment. ?.4 No person shall be assigned to perform any work for which respiratory protective equipment is needed unless he has been medically examined and determined fit. FMSI 06736 7.5 Care should be taken to rrQn1m1ze dust generation and transfer of dust to the person or his clothing. Clothing not worn during working hours nrust be stored away from contamination, and contaminated work clothing shall be specially handled to prevent exposure to asbestos dust. FMSI 06737 T&LEJ'HONE I zo II 8411-0440 FRICTION MATERIALS STANDARDS INSTITUTE, BERGEN MALL OFFICE CENTER E. 210 ROUTE 4 PARAMUS. N. J. 07652 INC. October 16, 1974 Mr. I H. Weaver Raybestos-Manhattan, Inc. Manheim, Pa. 17545 Subject: Work Practices for Users and Fabricators of Asbestos Friction Materials. Dear Ike: I have reviewed your recommended work practices. Vou have done a very bomplete and to-the-point job. Confirming our phone conversation, I wish to make the foll~ing suggestions: 1. Add MBrake Blocks" as 1,), and then re-number others to 1.6. 3.7 After "u stored in sealed containers, etc." Rernove "etc." 3.8 New section, add: Caution Signs and Labels - The emplofer will use caution signs and labels in accordance with pTovis1ons of standard 1910.93a. ...5. 2 Where .it sa~s 11 placed in tightly sealed containers ,n remove the word 11 ta ghtl y. 11 6..7 I am -not familar with the word "swarf." It is not in my dictionary. 7.2 Reword this section to remove possible hint that $making while working is the problem. Suggest: It is well documented that smoking is injurious to your health. The ill effects of smoking may be accentuated for those working where asbestos dust may be encountered. Smoking should be avoided! The forgoing are my comments and not necessarily those of the Committee. I pho~ed them to you simply to give you a quick turn-around. Sincerely, FRICTION MATERIALS STANDARDS INSTITUTE .\ ' \I C w-'\1----..)._ J......J ~ ...;~ EWD/erc CO- Asbestos Study Committee E. W. Dr islane Executive Director FMSI 06738