Document jYmGMZxo8J538zQjDbkRYz0Q

Interoffice Communication To From A. H. Sather J. V. Uptain ^ Date January 22, 1979 Subject VCM DOSIMETRY FOR DECEMBER, 1978 conoco A Following are the results of VCM dosimetry during December, 1978. 63 samples were taken, 7 (11%) of which indicated overexposures. Range, ppm No. Samples Percentage 0.0 - 0.5 0.5 - 1.0 1.0 - 5.0 5.0+ 48 76.19 8 12.70 5 7.94 2 3.17 63 100.00 Details of the seven (7) overexposures are shown in the attached table. Note the unusually high result obtained on 12/16/78 when a Vinyl Chief Operator was involved in changing a VCM filter pack. erald Uptain c: Plant Manager, Department Heads D. A. Kuhn, J. J. Hall, 0. D. Steffey VAB.0001041359 3-iniLs^rt -s il --Eh-- -i-1n.. -tirii .. it-.--''.k I**-.. l'-|i - +!:?< = 'ml!-' I'*+ 1 'i + rr't'l %|i, ; f.> 'ii .............................. .tv 1............. i . : hi i. i- A DATE 12/7 12/9 12/10 12/15 12/16 12/20 12/22 TABLE I VCM OVEREXPOSURES FOR DECEMBER, 1978 JOB CLASSIFICATION Maint . Mechanic Vinyl Lead Operator Vinyl Dryer Utility Maintenance Mechanic Vinyl Chief Operator Maintenance Mechanic Vinyl Shift Supervisor 8-HOUR TWA OVEREXPOSURE,PPM CAUSE 2.6 No specific cause found. 1.5 No specific cause found. 00 Blowdown tank "level tech failure. 1.6* Blanking 742 reactor. 283.5* Changing VCM filters. 1.7* Blanking D-600 Reactor. 3.1 No specific cause found. * Respiratory protection worn during overexposure. h r1 .* -s. J+Vr.^|H . J,': ` - tWti-il'-n u- ........................ VAB.0001041360