Document pp5dLrEyzw3NL5OrjzVw7Y4nX

ABDOO136598 ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month: November Date of Report: 1/04/85 Routine Chemical Dosimetry All Sample Results: Chemical ^ No. PEL % VCM Lead Total Particulates 92 97 18 95 6 100 Overexposures Job Class Exposure General Mechanic 1.1** ppm, VCM General Mechanic 2.0** ppm, VCM Yard Operator 4.6* ppm, VCM Color Weigh Compounder 56.6* mi^rogram lead/ni PEL Overexposures No. % 33 15 00 Source Employee overexposed while welding cracks in the dry blend "gump" screener bowl. The specific cause of the overex posure has not been identified. The employee spent his entire work period doing insulation work in the new Vinyl unit. The specific cause of his overexposure has not been identified. Employee overexposed while hooking/unhooking VCM railcars. Employee overexposed while weighing up micro quantities of Epistatic 112 and Epistatic 122 inside the color weigh room. k Respiratory protection was worn. kk Respiratory protection was not worn ABDOO136599 Industrial Hygiene Monthly Report Page 2 Area VCM Sampling Seven, 8*5 hour area VCM samples were taken inside the V-10 building during the reclaim of "pond" resin using REAL "minimonitor" badges. The results (below) demonstrate that while VCM levels exist during the operation, they are below the "Action Level" of 0.5 ppm, and well below the permissible exposure limit (PEL) which requires respiratory protection. However, the person observing pond resin pump-up should continue to wear a respirator while in V-10. Sample Location Sample Result, ppm, VCM First floor of V-10, column between and just north of dryers 0.1 First floor of V-10, blower just north of east dryer 0.1 First floor of V-10, column between and just north of blend tanks 0.1 First floor of V-10, between 551 and 553 blend tanks 0.1 Above and between blend tanks, V-10 0.3 V-10 centrifuge deck at airline station just northwest of 550 blend tank 0.4 Just above V-10 east dryer line Sweco screener. 0.4 Equipment Calibration The fourth quarter calibration of the precision rotameter used to measure Bendix BDX 44 air pump flowrates was completed using a large "bubble tube" as a primary standard. Area Ventilation Checks The fourth quarter check of lab ventilation hood velocities and flow rates was completed. The results were reported to the lab for correction of one deficiency found. cc: JF, JWW, DWH, PJK, WFH, CRS, RAF, AHS, JVU, JRW Tom Grumbles, J. R. Drumwright, M.D. - Houston ABDOO136600 ABERDEEN CHEMICAL PLANT CHEMICAL DOSIMETRY TRENDS Lead 100 s----------------------------v, i1 ;i ; Total Particulates -. .' } - --j------.--.--1 ' 1 ,i i1 --!----|-- 1 i 1, I -- Jan. feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 19 82 19 BS