Document a4KQm3drxROrxxaZKjmOMzqvb

FILE NAME: Chrysler (CHR) DATE: 1977 July DOC#: CHR088 DOCUMENT DESCRIPTION: Industrial Hygiene Report 4 0*04iW*4M 3. J. Ludwig j , . / Ihiet lr.cir.eer D. ?. DIazier Irdustrial Hygiene W*#V. INDUSTRIAL HYGIENE SURVEY Inter Company Corresponc -- r-- _ - i y ;i, _ia.77 _ Engineering -trice I t-tlOA employee * Indus, Eelat. Dhelsea ?rov Grounds Ihrys1er lenter On June ID, 1?"" , Messrs. D. N . James, ?. Havrilia, ana the writer investigated employee exposure to airnorne asbestos fibers in Department "640. The results of this investigation are listed on the attached data sheet opposite the correspond ing job description. Note that both the peak exposure levels and the eight hour time-weighted average exposure levels were found to be well below their respective OSKA limits. At the time of this investigation, the use of the small celt sander m the Brake Laboratory for grinding ana finishing asDestos-cased friction materials was brought to cur attention Industrial Hygiene recommends that this belt sander be equippe with local exhaust ventilation. A flex duct serviced by the existing dust collector should provide adequate control of any asoestos fibers generated at this work station. In regard to medical examinations, IFR 1911. 1000 j)3) states, `every employer snail provide or make availaole compre hensive medical examinations to each of his employees engaged m occupations exposed to air s e m e concentrations of asbestos fioers. * Altncugr. one regulation does not refine exposure* recent court decisions have defined exposure m terms of the lower detection limit, i.e.* 3-1 fibers per zucio centimeter of air. Since the eigr.t hour time-weighted average asoestos exposure of mechanics removing brake drums has not been shown to exceed 0.1 fioers/cc. we can conclude that annual examina tions are not required for Department "640 mechanics. Hcwevei Industrial Hygiene recommends that the plant continue to prov: annual medical examinations to all employees assigned to asbes grinding operations. In addition, we recommend that a single asoestos medical examination be offered to the employees who *ere stationed m Department "640 m 19"! see attachment A) . This recommendation is cased on the fact that our records indicate that elevated airoorr.e asbestos levels were associ ated with a Brake Laccratory dust collector used m 1-973. A -edical examination inducing a chest roer.tger.ccram ar.d pulmot function testing sr.culd help to identify any'health impairment caused by tr.e malfunctioning dust collection equipment, which *as used until April. 1973* DC 4927 D. ?. Haz i e r Industrial Hygienist 3. J. ludwic July :i, 1977 Page Subject: Industrial Hygiene Survey distribution: r A. Surr.etc w * R. Crawrcrd te H a v n l l a N. McCallum R. 0. McIntosh, W. C. Mitchell M * C. Mawrochi W. M. C `Brien \J* A, Sattelme: R R. Swar.cer * * * **+ OC 4928 ATTACHMENT A Names of Employees ir. Gecartment "640 in 197 7 Name M . -oertner, Foreman Z. Alder 3, Bauer I. Cowan 3. Ebersole C. Ernst V * Exe Iby v . Geer CGlover D. Hamilton J. Knapp R. lockhart w. Mi nix Z. Nowak R . Parker H. Pearson 3. .Reynolds W . Rooke Z. Roume11 L* Stark M. Cpdike R . Wolfe r . Crgaites v. 3m eke riccjc No. 9311 3369 ^ 0567 ^ 6171 6079 3120 4958 8401 5101 4359 4967 9213 ^ 3031 ?05 4 8104 9660 3244 ^ 4890 4590 4047 3427 3025 5125 3 390 DC 4929 /-o Lata Sheet, Chelsea Proving Grounds ASBESTOS Location OSHA Permissible Exposure Limit (eight hour time-weighted average) OSHA Celling Concentration (not to be exceeded at any time) Concentration (fibers per c u d i c centime of air) 2.0 10.0 1) Personal air sample, 0. Sauer 0557, grinding L-car linings on Ammco grinder m Brake Lao <0.1 eight hour time-weighted average <0.1 2) Personal air sample, L. Stark 4047, removing brake shoes to reset thermocouple 0.4 'eight hour time-weighted average<0.1 QbTh Ota! 7 equivaler, exposure for the working eicht heu time-weighted average e ., C = concentration during any p e n c e cr time T - is the duration of the exposure at the concentra tion 2 f0.4)(20) 480 450) 480 025 All determinations were made by the Indust filter met hoc at a rnacr. illumination. airborne asbestos fiber concentratic 1 Hygiene Laboratory using the membrs ration rf 42CX witr. pnase contrast DC 4930 fe vf 0 , ?. G l a c i e r Fr**-**tma 4 C,eiim t 3 . J , lo a v ig - I n d u s t r ia l H v g ie n e In t e r e n g in e e r Inter Company Correspon* * #coo# :*<* 'in t/um ci Zi+tttQft C h r v s ie r C e n te r P r o v in g G ro u n d s -vnL'CTlAL HYGIENE SURVEY This is in rasoan.se to your letter of July Cl* 1977 concerning the investigation conducted cn employee exposure c.0 airborne asbestos fiber in. Department 7640. *:ou recommended that the belt sander be equipped with local exhaust ventilation. This was accomplished during the week of August 13, 1977. Medical examinations have been scheduled for all eatDloyees who were assigned to department 7640 during 1973. examinations will be complete by mid-Septemoer 1977 and the results will be forwarded to your office. All employees engaged in grinding operations will be scheduled for annual nhvsical examinations. DC 4931