Document NEnRKKk4X08RD7QZozd1qbzrE

FILE NAM E: Ford (FD) DATE: 1973 DOC#: FD120 D O C U M EN T D ESCRIPTIO N : M em os RE A sb esto s in Brake Dust w ith Handwritten Suggestion/Response c f0 3 & ~ Sc-ictiiilo P ese?,reh 5a<f May 29, 1973 To: J . R. Knauss F.. M. Quarles J . II. Mayer, Jr . C. D. Melvin* L. Bartosievicz* J . A. Keller F. L. Gealer* W. R. Pierson* Subject : Asbestos Fiber Emissions During Brake Servicing At your request, several members of our s t a f f (asterisks) have c o lle c tiv e ly gathered some information about the asbestos fib e r release during brake service. F irst of a l l , our brake vendors presently use the a ir hose or an in d u strial vacuum cleaner with a u x illia r y brush. Ber.dix. in its many garages, has only vacuums available for brake work. A ll a ir guns and brooms were reportedly removed. The B ritis h , with more stringent standards, have adopted commercial vacuum cleaners or special shrouded cleaners for brake service. These are described in "Annals of Occupational Hygiene," Volume 13, 1970, which has b^cn supplied to you. ' A simple te s t was performed in the Transportation Oarage during brake service on a Chateau Club Wagon, using a small commercial vacuum (5 gad. Power Vac, Shop Vac Corp., Hackensack, N . J . , Model EM-150. 115 VA.C/PC art 5-2 amps). As the mechanic' serviced the right front or Joe i l l " 3" drum) one sample v.as collected from a f i l t e r on his upper chest and another sample was collected from the vacuum discharge duct. Miilipcra. O .o urn membrane type f ilt e r s (yj mm e ffe c tiv e diameter) were used with Oelmnn Viter holders and vacuum pumps. Samolir..- was conducted for tne four minutes during vniuh maximum, exrosure 'would be expected. Thus., the results woaDi be t-xpecteu to represent the peek fibc-r le v e ls , and not the average. ' 011464 PRODUCED BY FORD J. F. Knauss ,o_ May 29, 197? Hie vacuum cleaner exhaust was found to have collected .98 fibers/cc while the mechanic's sampler collected A 5 fibers/cc (see attached te s t report). These le v e ls are w ell below present and proposed OSHA standards, but the higher le v e l from the vacuum cleaner exhaust suggests that further improvements could be made. For example, a heavier duty vacuum has a larger and better sealed bag. With use, the fib er discharge rate from the vacuum could be expected to decrease as the larger p a rticles bridge the bag openings to reduce the effectiv e pore s iz e . A larger, more powerful vacuum should also provide substan tially greater cleaning effectiveness on the brake parts. Mr. Quarles suggested the vacuum drum be lined with a p la s tic bag before use. This appears to o ffer the best means for disposal of the collected dust .and bag. A v is it to a Eendix garage f a c i l i t y is planned to provide your personnel with added data on implementation, equipment, and procedures. A. E. Anderson Mechanical Research Dpartirent 011465 PRODUCED BY FORD The sticky note shown below was written by Barry Castleman and attached to the page immediately following this one along the right margin at the spot marked on the next page with an go-v/v TTNTNG D5T REMOVAL SURVEY 5-13-73 -e-] r r is ?.:i ii Contact Mel Huggins Performanne.JEist, Unit Supervisor lau Knight Senior Test Engineer Boh Hannount Test Engineer , John Dobbyn Maintenance Supervisor at MPG Don Melov Supervisor - Heavy T ru clf- VEG John Mi Ike _ Supervisor - VEG Amrico Fay Supervisor - VEG John Flnnerty Supervisor - VEG John Hockaday Supervisor - VEG Ken Schou . Administration Garage Ray Nevi Brake Test Engineer Comments Really don't clean that much, hut we da some air blow -off. No more a ir blow -off at VEG. We purchased a special vacuum arrangement fo r attachment to vacuum plate. Disc crakes do not develop dust. Use vacuum type removal so we don't blow asbestos dust in a ir . Not good to blow out dust. We sometime brush out. We sometimes tap i t (the dust) out - then use low a ir blow-off But we generally brush i t out because the dust is bad. we could e a sily liv e without a ir blow-off i f we had vacuum means. We use vacuum cleaner almost a l l the time. We sometimes wipe or brush o f f dust. We use very l i t t l e blow -off. We could do without i t e a s ily . Not too much maintenance an brakes. We use vacuum. Very a ir blow -off. We could do without blow-off altogether. We vacuum out when we do i t . We vacuum out when we do i t . Usually use vacuum, but sometimes use a ir blow -off. No problem 'doing without blow -off. We usually blow i t out with a ir gun. Don't have too much a L work in th is regard. We can e asily liv e without h lo v -o f.. We do not do th is type work, but i t would be best to vacuum. gzttzral CONCLUSIONS 1. Vacuuming is the superior and proven method that is the sa fe st, brake maintenance without a ir blow-off method. I EXHIBIT I 1 I 1 ^ PRODUCED B Y FOPJD k ULi t. n <Z A . J^ jjLS 5 .40 V Fort Marketing Corporation Inter Office Communication ,? ' cS- A - 1 - :jr 7 / ^ .y <, T - ir Servie QM*lon 7 , < <l*riUcfrr> ^ (u^w^~ ^ ^ \)Cb\(X. ^ ^r- ^ CJtr& J A^X" ^ A. ^ V < ^ - 'ds-ro 1 I t ^ V t^ O m s W { 4 O L^ ^ . T W ^ * * r t o V ^ - VT> i L . . * X f r i - 4 4 -4 ^ . V i'^Vt -&. OU(Tv*-> <1 >.g VJt>-/V. ^ K^VvW) ( ^ ^ W 1 V---- i.U*oroi. VtlWfc Vr^p:\ - J^ ', _ V J _1J j _ ( V ^ L Tr`" ' ^ " '" ^ r^ ^ a ^ r * M `ors 5V J- l - '"W'L - d * t^ Ad~ EXHIBIT \Mr~ j l c - s u ^ xJ s w A -- f ^OrrV L-5> J> 4 ` /C W 'Z\ot t^Aorids^ ni^" {V ftfc -r '* . 007422 PRODUCED B Y FORD KHUS-InM .M .HI. 25 73 AM / n lntar Otflc* RECEIVED D. R. VEAZEY Mr. D. R. Veazey Ganard Sanrtoaa June 19, 1973 cc D. L. Block E. H. Crabtree F. J . Dery R. U. Obringer P. 7 Toth Subject: Asbestos As you are avare ve engaged our In d u strial Hygiene Section to conduct several environmental tests at Arizona Proving Ground, and Mr. Henry lic k o f that Section performed the necessary sampling and tests during the week of April 23, 1973. Included in the testin g vere samples of airborne asbestos dust generated while cleaning truck brake lin in g s and assemblies. We have received a w ritten report o f the laboratory analysis which relates that although the maximum allowable 5 fib re s per cubic centimeter was not exceeded on a time-weighted average, there was an instance during the test where the "peak" maximum o f 10 fib re s per cubic centimeter was exceeded. . Paragraph 1910;93a o f the OSHA Lav concerning asbestos (copy attached) states that the employe s h a ll be n o tifie d in w riting i f he is exposed to a concentration o f asbestos that exceeds the peak le v e l. It is requested that the employe, Peter Wasllewski, one of your Driver-Mechanics, be personally n o tifie d by using the attached N o tificatio n Card. After the employe has been n o tifie d , one copy should be placed in his Medical Record and the o rig in a l returned to th is o f fic e . . Concurrent with employe n o tific a tio n i t is required that a l l cleaning and "dusting" o f brakes and components by compressed a ir be discontinued and prohibited. Future dust removal from brake assemblies is to be done by use of a shop vacuum available from Sears Roebuck and Company, Craftsman i5-gallon Heavy-duty Indu strial Vac with d o lly and nozzle, Port No. 99KT 17831N. Accessory se t, Part No. 9KT 16973, must be provided to afford proper and e ffic ie n t removal o f dusts. The entire cost is s lig h tly less than $100.00. This unit has been thoroughly checked for effectiveness and is approved fo r vacuuming o f asbestos by In d u strial Hygiene Section and General Services Safety A c tiv ity . The attached procedure must be followed when the unit is emptied wrd contents discarded. tUtSiD-t*""* 007021 PRODUCED B Y FORD D. R. Veacey - 2- June 19, 1973 _____ _ ^ "dust-" o'r" c^ an brahes prior to receip t of C s , S c TM - - -* m " I ! S ,, . - . - k l sss o f 1-nsth o f sxposurs to dsbo.tcs d u n . Mldnosot ^ S S t X - t S - t o r , Hodsl 8710, should Os us.d for th is purpose. ' Tour attention is directed to OSHA Paragraph 1910-93* (J) 1 6 of the attached R e fla tio n s concerning Medical When f u l l compliance v it h th is paragraph has been met, as discussed by us in a recent telephone conversation, please adti.se th is of^^ce. Another reviev of exposure J asbestos at AEG v i l l be made v ith in s ix months annually th e re a t.e r. I f there are any questions you may have, or i f ve can be of any further 'assistance,, please contact us. Attachments O v_. 007022 PRODUCED E Y FOPX>