Document aJEzLra1GDddwbmezZ46Qm4GN

Interoffice Communication To From A. H. Sather J. V. Uptain>^ Date Subject August 21, 1979 VCM DOSIMETRY - JULY, 1979 conoco Following are the results of VCM dosimetry during July, 1979. 63 samples were taken, 6 of which indicated overexposure. Range, PPM No. Samples % 0.0 - 0.5 0.5 - 1.0 1.0 - 5.0 5.0+ 52 82.54 5 7.94 6 9.52 0 0.00 63 100.00 The results*of the 6 overexposures are shown in Table I. erald Uptain Attachment c: D. A. Kuhn, J. J. Hall, 0. D. Steffey tt* H"pP ;i-: L L-: i I1..4 VAB.0001041329 -li > - ' 'Ht TABLE I VCM OVEREXPOSURES FOR JULY, 1979 Date 7/5 7/14 7/13 7/17 7/18 7/27 Job Classification Maintenance Supervisor Vinyl Lead Operator % Maintenance Mechanic Maintenance Mechanic Maintenance Mechanic Maintenance Mechanic 8-Hour TWA Overexposure, PPM Cause 1.0 Specific cause not found. 1.7 Specific cause not found. Worked in control room entire period. 1.7* Repaired VCM charge lines. 1.3 Specific cause not found. 3.7* Blanked VCM charge pump. 1.0 Specific cause not found. * Respiratory equipment was worn. VAB.0001041330