Document 6kwGDZvR4JRVkD0v9gE44LEg

t Infra Company September 19, 1972 Nr. R. Major Industrial Relations Manager Lorain Assembly Plant cc V. L. Hall J. A. Kostyo R. V. Pascoe * H. H. Smead, N.D. Subject: Aceton Vapors in Department 50, Asbestos Fibers in Department 261-B and M5B24W-Mll*J26o (Solvent Mixture) Vapors in Department kO On August 9, 10, 1972 we performed ar. Indurtrial Hygiene Survey at the subject locations. Samples of acetone vapors, airborne asbestos fibers, and M5B2kk-AM1UJ260 vapors were taken to evaluate employe exposure with respect to compliance with current Q5HA standards. Results obtained, locations sampled, and contaminants evaluated are specified on the attached data sheets. A brief discussion of the operations surveyed and results obtained follows: 1. Acetone vapors in Department 50: ThiB location was surveyed before (6ee July 6, 1972 letter on the same subject). We took one-hour long breathing zone samples on a via/l-top sprayer and on two roof sprayers. In addition, we recorded conce **.rations during the spraying cycle of each operation and took one ge teral eir sample. All ventilation systems and air circulating devices we -'- "*>i" while sampling. The results obtained, which are well below the current CeulA Standard for acetone, indicate that under the conditions in which this survey wa6 performed acetone vapors evolved in this operation do net constitute a present or potential health hazard to the exposed personnel. 2. Airborne asbestos fibers: Results of the two samples taken at thi6 \ operation (p]acing of heat shield for muffler and tail pipe in Econo line 300) are well below the current QSHA Standard for asbestos fibers. < This was expected due to the nature of the operation. 3 M5B2U4-A - M14J250 vapors: We took only one sample at this operation (cleaning of pressure tanks). The result obtained is above the Industrial Hygiene Section estimated Threshold Limit Value (TLV) for the considered solvent, joixture (see data sheet). We recommend either exhaust ventilation control of vapor or a reduction in exposure time of the employes assigned this operation. Provided there is sufficient capacity, consideration should be given to ducting the exhaust ventilation system located close by to this operation with appropriate exhaust inlets for vapor control. Libardo LaTorre Industrial Hygienist Attachment m PQ8005 0253 PRODUCED BY FORD SCF-FORD-O868 PRODUCED BY FORD 0-g rj -si O* TJ O JtetajllMSt Ionia towj>ly Want flBtfBUSSI 8-9.72 2t00*t39 less**"* OBBABJ Boaao, 8.8. 2T6-05-30C^,Bftpt. 201B lecnoUna 300* hast shield ftxr nfflsr h tall pipe* fibers longer than 5 MLcrcactoxs par c.e. of Air Baaplad 5-0 0.38 6-9-12 2t3fe>3t0e p.a. 9mm location and operator ao anpla fl - lrttaati tal ^rgiona Section KotiaataA Standard 0.31 565 PlU 6^-72 lifiO-lt^9 pus. JtOftaMWlltl,f!ll1 j. K. *, 36^-a-593SfiWt* J. r, faint UtdUD flrwaat 1W 315 1000 WK Wft S AloSoSaStSloSnS 1 8*10-71 8t3-9t30 * Christlaa, 8.8. 92T-5&-5389. $0* An* 8# tlfljrl ftp Bprmjmr (OQqpotia *) t 8*10*72 Bpnjlag carols, bnatMng > rlagrl top apngrlag 3 8*10*72 6iJ3-9*33 -*- 1, 841. *>1-J0-*0W, arpt. 50, Ana R, roof sprang (onvoolt* savls) % 8-10*72 8138*913^ a.a. ..I w -- - - v p --sr roof rpnarcr (ooapoolte gaplc) 5 8*10*72 Spz^rlaf ^rals, Jbn'a "breathing roof apztplag 6 6*10*72 9C8-952 as. Sotat Air nlocitie. of 200-250 ppa *y from breathing eone of roof sprayer. were measured 150 8B0 100 60 lQO 120 iI**' f**> Inraln Assembly Plant Instrumentation J. V. Oonbustible Oas Dstactor, Model CSSP, Serial #668883 Rust-Track Chart Recorder 0-10 bV Alnor Velooeter, Type 3002, So. 31269 vlth acoessorles MSA Portable Praps Bos. 12, 13, 19, and. 17 Filter Media: Mllllpore Filter Type A, Cat. So. P1003700 Glass Tubes packed with Pittsburgh activated charcoal type 2PL 20X90 Determination Asbestos: ftiaee-oo&trast illumination and bO field deterninatinE per sample IZOSH standard aethod. Aceton: Oaa chrcwtograpby, aaople Sob. 1, 3* ^ and 6 Solvent Mixture Vapors: Oas Chromatography, sample Ho. 1 Acetone: Combustible Oas Detector Baqplaa Sob. 2 & 5 S007 07?9 ' PRODUCED BY FORD ^REQUEST FOR LABORATORY INVESTjjBATIOM PART NO. ART OR MAUrflAnflSCRIPIlON SMCfFICAIION 91 >565ui KSiNKiSSr DESIGNATED C0NTR01 item SUPPIIER EJA. OR W.O. NO. lAt NO. 177B3-0B2q TOTAL MIN. * * ,,, p^, *ecfsri6c----------------------------------Tts I 1 no LZj NO OF RCS. OR OUAN. DEPI. CHG. ACCI. NO. -SL.SAJ2*. ts^/'C-/rsc OUAl MAR CONT 6? 4553 ACCEPTED ITDATE COPY 3 ioo7 o?*>: ' PRODUCED BY FORD TO: SUBJECT: OBJECT: CONCLUSION: DATA REC*D: ` TEST DATA: CENTRAL LABORATORY SERVICES GENERAL SERVICES DIVISION LABORATORY INVESTIGATION REPORT number 17783 Mr. H. Lick September 6, 1972 Asbestos Particles To determine the number of asbestos fibers, five microns in length and larger, per a known sampled air volume. Sample #1 -- .38 fibers/ml. Sample 2 - .31 fibers/ml. Two filter specimens identified as: Samole #1 30 minutes X 2 liters = 60 liters minute Samole #2 30 minutes X 2 liters = 60 liters number Asbestos - Lorain Department 281B Econoline 300 Heat shield for muffler and tail pipe Rosso S.S. 276-05-3024 Metalloeraohic The particle lengths were established utilizing Public Health Service test procedures, phase-contrast illumination and forty field determinations per specimen. Sample #1 - .38 fibers/ml. Sample #2 - .31 fibers/ml. AJM/pk 16*1-2 C.J, Boryski, Manager A.^/tourawski, Supervisor Metallographic Section 2007 C7e1 PRODUCED BY FORD