Document XzV8bMgrGzeNd9ezDNRkp94X4

FILE NAME: Ford (FD) DATE: 1971 Sept 2 DOC#: FD113 DOCUMENT DESCRIPTION: Memo - Meeting with Bendix Research RE Asbestos from Brakes Intra Com pany Septem ber 2 , 1971 To: Mr. J . V. P e t r o c e l l i cc: Mr. A. E. A nderson ' Mr. E. Eichen Mr. S . G ratch Mr. M. Humenik, J r . Mr. E. D. Mnrnnde Mr. J . E. M ayer, J r Mr. C. M elvin Mr. J . W. S p ry s S u b je c t: Meeting with Bendix R esearch re - A sbestos from Brakes On A u gu st 2A a m eeting was h eld w ith r e p r e s e n t a t iv e s o f Bendix R esearch - a t" t h e i r r e q u e s t -- to d i s c u s s e x p e rim e n ta l te ch n iq u e s f o r g e n e ra tin g and l i n i n g airborn e brake lin in g wear d u st, and fo r exam ining the sampl * > r - a s b e s t o s f i b e r s . A tten din g from B en dix were M G. Ja c k o W M purg ditlT ' ?"* T,,/p" S o l i r ^ : - -- -r -they S n d " o do in co n n ection 1 th t h e i r EPA su p p o rte d c o n t r a c t f o r th e . . . a c r e ment o f em issio n s from b rak e s and c lu tc h e s. j n , +_ 1rvu th e scoDe o f work o u tlin e d in EPA's R equest r . c o p . y Plan manual0tra n sra issio ^ c lu tc h during v ario u s operatin g c o n d itio n so n a m o v in g v e h ic le by ap p ro p riate shrouding o f the br d i f f i c u l t i e s th e y may have i n c o o lin g J t h e d i s c b r a k e s ^ in ^ h a required J ^ volume o f a i r i n t h e ir sam p lin g 3^ 3 > . r~, sjss s : (L, ^ 1 , th e ir .tten p t to c o lle c t 1 1 ^ M be caed fo r th e b r i e d u st g .n ero U o n 111 " 1" ' o r i g i n a l equipment and a fte rm ark e t lin in g s- stopping conditions to t.st * s / a S p s , .D etro it ,,,,ia S lin s testin g) a Ur- th e n d is c u s s e d methods o f sam ple exam in ation fo r a s b e s t o s f i b e r s ^ i n d icated that the in itia l in sp e c t! shadowed d u st a p p l e s (freed of f ilt e r m aten x j p r o b a b i l i t y t h a t many a s b c s by o t h e r d u st Pa r t l =l 3 f .... ucrc not seen because of concealment f i b e r 3 counted a3 a s b e s t o s may not have , p ro c ess of examining sam ples by the technique d T v e i o p S T t ^ ' sin a rS ch o o l o f^ e d ic in e a t City ^ v e r s i ^ f a n ^ o r P ^ r p L S c l e s f i o i i o w L i V ^ e b re a k in g up and d is p e r s io n o f p a r t i c l e 000457 2I.M PRODUCED BY FORD Mr. J . V. P e t r o c e l l i -2- September 2, 1971 a g g lo m e r a te s nnd f i b e r bundles by mashing betueen g l a s s s u r f a c e s . T h is method o f f e r s the ndvnntage o f improving the uniform ity o f d is p e rs io n and elim inatin g o b sc u r in g m a t t e r , a l l o u i n g a t r u e a ss e s s m e n t o f t o t a l mas3 o f a s b e s t o s f i b e r s ; however, i t has the disadvantage of destroying the o rig in a l p a rtic le size d i s t r i b u t i o n . We a l s o d e s c r i b e d an e l e c t r o n d i f f r a c t i o n method o f a b s o lu te id e n tific a tio n uf in dividu al clirysu tilc asb esto s f i b r i l s scon in the electron microscope. B en dix R esearch p r e f e r s to u se sam ple p r e p a r a tio n p ro c e d u re s which p re se rv e th e o r i g i n a l p a r t i c l e s iz e d i s t r i b u t i o n w ith o u t b re a k in g up f i b e r bundles in to in d iv id u a l f i b r i l s . They a r e n o t y e t c l e a r on how t o do t h i s w ithout r is k in g o v erlo o k in g co n cealed f i b e r s , b u t they in te n d to t r y such methods a s low tem perature ash in g o f the f i l t e r sample w ithout m ashing, follow ed by scanning an d /o r tra n sm issio n e le c tro n m icroscope exam in ation , bendix brought up the p o s s i b i l i t y o f our l a b o r a t o r i e s tra d in g sam p les f o r exam in ation -- we in d ic a te d we m ight be r e c e p t iv e to su ch a p lan and would keep th e su g g e s tio n in mind. Bendix plans to o f f -- they did vehicle te stin g to the point o f We w il l a tte m p t hnve fo u r o r f i v e in d i v id u a l s w orking on th i3 program on and not r e v e a l th e t o t a l m a n -e ffo rt in v o lv e d . They plan to s t a r t by th e f i r s t week in Septem ber 1971 and to com plete the work com pleting a rough d r a f t o f the p r o je c t re p o rt by A p ril 1972. to keep inform ed of the s ta tu s of th e ir program. Roy L. G ealer 000458 PRODUCED BY FORD