Document mpyjRV8ZX9jBK5jDwyZ77xL4B

ADLX CORPORATION INDUSTRIAL HYGIZHiE SURVEY FRICTION PRODUCTS GROUP Wn-ICHESTER, Virginia APRIL 19-23, 1976 PURPOSE Thi3 Industrial Hygiene survey was conducted to determine tha extent of occupational dioeaoo exposure to airborne asbestos, lead, and solvent vapors. Recommendations for. control ere enumerated in the report. Of the 48 samples collected for airborne asbestos, thirteen exceeded the present limit of 5 fibers/ml greater than 5 microns in length, and twenty-six including the thirteen noted above, exceeded the 2 fiber limit which is scheduled for adoption by OSHA in July of this year. The majority of the exposures vers confined to Booh Preform and Blok Preform with lighter excursions observed at the dry line operation in Lower Com pounding and at Disc Brake Inspection. Duplicate and tripli cate samples were collected at seven of the aforementioned operations which accounts for 14 of the 48 samples. Averaging of the multiple samples revealed 8 hour time weighted levels at three blok preform units of from 5 to 6 fibers/ml. Fiber coun :s of multiple sample locations in Eook Preform revealed average levels of 4 to 5 fibers/ml. Historically, book preform levels have been generally lower than those observed during this survey. The excursions were not anticipated since the installation of the hoods around the preformarS should have significantly reduced the fiber counts. The increase may be attributable to normal ambient variations, but it ia likely that housekeeping and excessive reliance on the systems by the operators are also factors. In addition, the mix buggies ara not yet ventilated, and floated fibers are clearly visible where the operators lean over and scoop mix from the buggies. The two short term samples taken from the cry line operator in Lower ^Compounding reveal that this operator is overexposed if va observe the 2 fiber limit. This obviously arises curing leading of the mix buggies from the hoppers and to c leseer extent during shifting and transfer cf the wheeled containers. 1- -