Document omN6E3LJZXkE1odYLma6V1zkD

ABDOO136609 PJK ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month: August Date of Report: 10/4/84 Routine Chemical Dosimetry All Sample Results: Chemical VCM Lead Total Particulates PEL No. % 93 91.4 24 96.0 6 100.0 7* PEL OVEREXPOSURES No. % 8 8.6 1 4.0 0 0.0 Overexposures Job Class Chief Operator Reactor Operator Reactor Operator Reactor Operator Exposure 1.2* ppm, VCM 10.1** ppm, VCM 1 1.4* ppm, VCM 2.9** ppm, VCM Source Employee overexposed while changing VCM filter pack filters. Employee overexposed while doing his regular job of reactor operator in the old unit. No specific cause for his overexposure has been deter mined. Employee overexposed while sampling 745 reactor. Employee overexposed while training a fellow employee and a reactor operator in the old unit. No specific cause for the overexposure has been identified. ABD00136610 Industrial Hygiene Report - August Page 2 Qverexposures Exposure Source Dryer Utility 1.1** ppm, VCM Employee overexposed while being trained as a reactor operator in the old unit. No specific cause for the overexposure has been identified. Yard Operator 2.6* ppm, VCM The employee was overexposed while hooking/unhooking VCM railcars at the VCM tank farm. Mechanic 1.9** ppm, VCM Employee overexposed while blanking out D-300 reactor condenser prior to condenser drilling. Mechanic 6.2* ppm, VCM Employee overexposed while changing out two Corken compressors at the VCM tank farm. Line Compounder 44.4* microgram Lead/m^ The product being produced during sampling time contained no lead. The source of the overexposure is not clear; it may be related to housekeeping in the area. * Respiratory protection was worn. ** Repsiratory protection was not worn. VCM Area Monitoring Four, forty-minute VCM area samples were taken at the top of 502 blend tank during the transfer of 5385 resin slurry from D-700 reactors using REAL "Minimonitor" badges. Wind direction was from west to east, ranging between zero and five miles per hour. The results indicate, as have previous studies, that VCM concentrations atop blend tanks may reach levels that require the use of respirators during slurry transfer, depending on a variety of variables including wind conditions. Because of this, respirators should continue to be used during work atop the tanks. No. Location Result (ppm, VCM) 1 Top and SW of 502, bn Safety Railing 2 Top and NW of 502, on Safety Railing 3 Top and SE of 502, on Safety Railing 4 Top and NE of 502, on Safety Railing < 0.1 < 0.1 < 0.1 3.3 ABDOO136611 Industrial Hygiene Report - August Page 3 Plasticizer-in-Air Monitoring The results of plasticizer-in-air samples taken at the mills on Compound Lines I and III during July appear below. Sampling equipment consisted of Bendix BDX 44 air pumps equipped with Gelman 37MM cellulose filters. Sample analysis involved solvent extraction, followed by liquid chromatography. The single high result occurred during a period in which the "belt" of compound near the sampler was "smoking" excessively (for no obvious reason). A similar sample (#3), taken two hours later and at the same location, showed a hundred-fold decrease. Compound No. Li ne Date (Time) Compound > Plast. Location Result (mq/m3) 1 3 7/23/04 38601 Blk 610P SW Corner, E Take Off Belt 22.7 (1118) 3 3 7/23/84 38601 Blk 610P SW Corner, E Take Off Belt 0.2 (1318) 4 3 7/25/84 3934-152-Blk 61 OP SE Corner, W Take Off Belt 0.2 (1012) 5 3 7/25/84 3934-152-Blk 610P SW Corner, E Take Off Belt 0.2 (1012) 2 1 7/23/84 34642 Nat 108P Oper. Station at Mill "Face" 0.2 (1314) 6 1 7/25/84 34642 Nat 108P Oper. Station at Mill "Face" 0.2 (1055) Equipment Calibration The third 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. No significant drift was seen. Gmny^^ftlk, R.N. Plant Nurse rah cc: JF, JWW, DWH, PJK, LPS, CRS, RAF, AHS, JVU Tom Grumbles, J. R. Drumwright, M.D. - Houston ABD00136612 ABERDEEN CHEMICAL PLAMT CHEMICAL DOSIMETRY TRENDS C c $& 19 19 C\J CO <T>