Document bB7ZkeQb66rwjbN93dLmOq5my

CtYHtp*Jo Inter Office Personnel and Organization Staff March 18, 1982 Mr. J. D. Whyte, Manager Kentucky Truck Plant cc C. . Allen, Jr., M.D. D. Ryer J. G, Henry Subject: Industrial Hygiene Re-Study - Asbestos Fiber Exposures Reference: Industrial Hygiene Study - Asbestos Fibers, M. J. O'Brien to J. D. Whyte, April 9. 1980 Along with first quarter lead monitoring conducted March 2-3, 19B2, additional campling at the request of Mr. D. Dyer, Safety Engineer, was performed of employe exposures to airborne asbestos fibers. The purpose was to re-study aebestoB-use areas and quantify exposures of those employes who routinely handle asbestoscontaining materials, per OSHA regulation 29 CFR 1910.1001. Only asbestos re sults are detailed in this report. Lead exposures will be reported at a later date. FINDINGS Asbestos fiber exposures at Kentucky Truck Plant are confined to assembly areas where new brake linings and clutch plate6 are installed, in some instances, the installation of these parts involves an abrading action that can potentially generate airborne fibers. Mainly, employe breathing zones can be contaminated by the release of fibers that have accumulated in the shipping cartons used for part storage. The extent of employe exposure to asbestos is dependent on many factors including personal work practices and the amount of du6t in these oartons. Results from this study, aB shown on the attached table, demonstrate the presence of airborne fibers within the employe breathing zones but at airborne concen trations, 1) below the OSHA permissible occupational exposure limit (PEL) of 2 fibers, longer than 5 Aim, per cubic centimeter of breathing zone air (f/cc) and, 2) below the medical action level of 0.1 f/cc. RECOMMENDATIONS Based on the above results, no additional employes require the annual medical examination at this time as specified in Dr. D. L. Block's letter to Divisional Industrial Relations Managers, et.al., (Medical Monitoring - Asbestos Exposures, May 2, 1978). However, those employes who were identified in the April, 1980 Industrial Hygiene study aB exposed to asbestos fibers in excess of the medical action level, must continue to receive annual medical examination. This is Company policy when dealing with asbestos, a known carcinogen, in which no safe limit or threshold of exposure is known and an employe exposure exceeds 0.1 f/cc. 3005 1637 SCF-FORD-3212 PRODUCED BY FORD Mr. J. D. Vhyte March 18, 1982 Page Two In addition, the following is recommended: . Minimize employe exposure with routine vacuuming of shipping cartons and other areas of potential dust build-up of asbestos-containing material. . Insist supplier vacuum loose dust and fibers from parts and boxes before sealing and shipment. Bequest supplier to investigate coating inside of shipping boxes with an adhesive (spray or sticky paper lining) to trap non adherent asbestos fibers released from parts during shipment. (This was successful for clutch plateB at Livonia Transmission Plant. Raybestos was supplier of clutch plates wrapped in sticky paper.) . Vacuum operator will require monitoring and prior to monitoring, personal protective equipment during disposal. . Proper disposal methods are required suoh as collecting waste material in impermeable, dearly labeled bags. . If any changes in the present operation occur that may impact on employe ex posures such as rate increase, etc., additional Banpling should be performed. dt attachment Ala.. ... Industrial Hygienist Industrial Hygiene and Toxicology Dept Employe Health Services 8005 1636 PRODUCED BY FORD INDUSTRIAL HYGIENE SERVICES SECTION INDUSTRIAL HYGIENE AND TOXICOLOGY DEPARTMENT EMPLOYE HEALTH SERVICES Kentucky Truck Plant Asbestos Use Areas March 2-3, 19B2 PERMISSIBLE OCCUPATIONAL EXPOSURE LIMIT TO AIRBORNE CONTAMINANTS (f/cc = fibers per cubic centimeter of breathing zone air) Contaminants Action Level 8-Hour Time-Weighted Average Exposure Limit Asbestos 0.1 f/cc 2 f/cc RESULTS Employe Name S.S. Number Job Position (Column Number) Date Department 62 - Front End Axle J. Renfrow 310-46-7144 Brake Tightener (AA-2) 3/2/82 M. E. Hibbs 407-60-0975 Hub Hanger (AA-2) 3/2/82 Department 64 - Rear End Axle R. Leffler 311-46-1036 Brake Set-Up (K-7) J. Richert 306-56-1773 Brake Tightener (K-6) Department 74 - Diesel Engine Line 3/2/82 3/2/82 H. Robinson, Jr. 315-44-7073 Clutch Plate Assembler (B--4) 3/2/82 3/3/82 N.D. = None Detected at 0.004 fibers/cc Airborne Fiber Concentration Time-Weighted Average (f/cc) 0.02 N.D. 0.007 0.01 0.08 0.02 8005 1639 DATA RETRIEVAL NUMBERS: ARA 172-176, 1&3 INSTRUMENTAL ON: Bendix BDX-55 sampling pump with 0.8 jam open-face AA filters ANALYSIS: Fiber Microscopy performed by L. Latorre, Senior Industrial Hygienist fCKD MC-10I. cut.'.'ANY Industrial Hyt,irw 6 1-/ : I ;y tabotdtory Accrcd.'td u ' < "-J tyt American InCuilrul Allocation PRODUCED BY FORD