Document 2RrL7oOEKRxr8dovL76L7D2RL

ABDOO136630 P^C ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month of: April Date of Report: 5/9/84 1. ROUTINE CHEMICAL DOSIMETRY All Sample Results: Chemical VCM Lead Total Particulates < PEL No. % > PEL (OVEREXPOSURES) No. % 101 94.4 8 88.9 5 100.0 6 1 0 5.6 11.1 0.0 OVEREXPOSURES Job Class Exposure Source General Mechanic General Mechanic 5.4*ppm, VCM 2.4* ppm, VCM General Mechanic 2.2* ppm, VCM Instrument Technician 9.3** ppm, VCM Rx Operator 1.4* ppm, VCM Rx Operator 145.6* ppm, VCM Line Compounder 39.8* micrograms Lead/m^ Respiratory protection was worn. ** Respiratory protection was not worn. Employee overexposed while changing safety discs on D-400 reactor. Employee overexposed while changing a sightglass at the horizontal VCM storage tanks in the VCM tank farm. Employee overexposed while cleaning a sightglass at the horizontal VCM storage tanks in the VCM tank farm. Employee overexposed while repairing the batch water stripper tubing. Employee overexposed while checking VCM leaks in the old unit. Employee overexposed while changing VCM filter pack filters. Employee overexposed while charging Halbase 100EP on compound line III. ABDOO136631 Industrial Hygiene Monthly Report Page 2 VCM AREA SAMPLING Four VCM area samples were taken in the biodisc water treatment area, using REAL minimonitors. Wind velocity ranged from 0 to 5 miles per hour, direction being from west to east. Sampling time was seven hours and fifteen minutes. The samples were taken to measure the effectiveness of recently installed venti lation exhaust blowers in reducing area VCM levels. Similar measurements taken during 1983 showed results averaging 19.9 ppm and ranging from 0.6 to 87.9 ppm, VCM. The evident reduction in VCM levels will be checked again during May. Sample Location Result ppm, VCM Just north of middle biodisc hut West side of middle biodisc hut Just south of middle biodisc hut West side of east biodisc hut 0.2 0.1 0.2 0.1 PLANT NOISE SURVEY Pat McCoombs and Bill Richards of the Medical Department conducted an extensive plant noise survey on April 10-11, 1984. The work included property line noise measurements, noise level "contouring" within the plant, and noise dosimetry. Their report is expected to be issued during May. RESPIRATORY PROTECTION Scott Sling Paks The relatively short waist straps provided with the five, recently received Scott sling paks were replaced with longer ones made from materials provided by Scott Aviation. Training of vinyl shift supervisors on bottle changeout procedures for the sling paks was completed. VCM Cannister Gas Masks All VCM cannister gas masks were removed from plant service except those located in the Vinyl Department's area. cc: JF, CRM, PEM, PJK, LPS, WFH, CRS, RAF, RAM, AHS, JVU Tom Grumbles - Houston J. R. Drumwright, M.D. - Ponca City  i C c ABDOO136632 ABERDEEN CHEMICAL PLANT CHEMICAL DOSIMETRY TRENDS Total Particulates O" o: ;v/- 19 82- ------ r:------------------- ^--------------- ------------ :-- i9 83 19 M Jan. Fob. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. 1May June July Aug. Sept Oct. 1Nov. Dec. '