Document 66NLjvZV068GGKydMb7nN32E

ABD00136539 ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month: August, 1986 Date of Report: Sept. 29, 1986 I. ROUTINE CHEMICAL DOSIMETRY All Sample Results CHEMICAL < PEL NO. % > PEL (OVEREXPOSURES) NO. % VCM Lead Total Particulates 84 97.7 21 95.5 4 100.0 2 1 0 2.3 4.5 0.0 Overexposures JOB CLASS General Mechanic General Mechanic EXPOSURE * 1.2 ppm, VCM ** 2.4 ppm, VCM SOURCE Employee overexposed while changing a gasket on 05 compressor in the VCM compressor shed. Employee overexposed while blanking out 744 reactor in preparation for maintenance. Compounder 45.6 Micrograms Lead/MJ Employee overexposed while charging Line III blenders. The exact cause of his overexposure has not yet been determined. * Respiratory protection was worn. ** Respiratory protection was not worn. II. EMPLOYEE ANNUAL HEALTH TRAINING Preparations, including a class outline, were begun to conduct employee annual health training during September. The training will include OSHA required instruction related to VCM, lead, asbestos, noise and respiratory protection. III. MAINTENANCE PERSONNEL LEAD EXPOSURE The Maintenance worker lead dosimetry program was begun. The measurements, using the same protocols as with routine, Compound/Dry Blend personnel lead dosimetry, are being made as maintenance work within potential lead exposure areas of the Compound Department is performed. The results for the month are as follows: ABDOO136540 Industrial Hygiene Monthly Report Page 2 III. MAINTENANCE PERSONNEL LEAD EXPOSURE - Continued Job Class TWA Result (Micrograms Lead/M PEL (Micrograms Lead/M~* General Mechanic 7.1 47.1 General Mechanic 6.9 47.1 General Mechanic < 4.4 47.1 IV. SHORT TERM VCM EXPOSURES Three, short-term VCM exposure measurements were made during the changing of old and new unit RVCM filter pack filters. The measurements were made with REAL "Minimonitors" worn by two operators ("A" and "B", below) as they changed the old unit filters and by a third operator ("D"), who changed the new unit filters. All three wore respiratory protection, as required, during the work. Operator Equipment Sanple Time (Min.) TWA Result (ppm, VCM) Wind Conditions A Old Unit RVCM Filter Pack 19.0 * B Old Unit RVCM Filter Pack 19.0 < 0.1 6.1 N to S, 5 Mffl N to S, 5 MPH C New Unit RVCM Filter Pack 10.0 362.2 N to S, 5-10 MPH * Operator "B" was also wearing his regularly scheduled VCM dosimetry badge, the 8-hour TWA result amounting to 0.7 ppm, VCM. A concurrent area survey was made in each case, using an HNU "Photoionizer". During the old unit work, an initial concentration of only 5-10 ppm, VCM was measured next to the filter pack head when it was first opened. This concentration dropped to 2-3 ppm within two minutes with no detectable amounts being found beyond fifteen feet south of the work. During the new unit work, water interference with the HNU prevented an initial measurement at the filter pack head. However, the amount of VCM present was greater, detectable amounts being found as far as thirty-five feet south of the filter pack throughout the work. More samples are planned. /Jerald V. Uptain rah c: JF, JWW, DWH, PJK, WFH, TFL, VEM, RAF, AHS, CWT Tom Grumbles, J. R. Drumwright, M.D. - Houston ABDOO136541 ABERDEEN CHEMICAL PLANT CHEMICAL DOSIMETRY TRENDS