Document jmb1Jz5J1mDKadb9rj8wK7yep

conoco Interoffice Communication To A. H. Sather From J. V. Uptain Date February 18,1980 Subject VCM DOSIMETRY - JANUARY, 1980 w Following are the results of VCM dosimetry during January, 1980. 85 samples were taken, two of which indicated overexposure. Range, PPM No. Samples % 0.0 - 0.5 0.5 - 1.0 1.0 - 5.0 5.0+ 81 95.30 2 2. 35 2 2.35 0 0.00 85 100.00 One overexposure of 2.6 ppm was experienced by a Chief Operator in the Vinyl Area. No specific cause of the variance was determined. He was not wearing a respirator. The second overexposur Operator who was worki ator. amounting to 1.5 ppm, occurred to another Chief in the VCM recovery system. He was wearing a respir- ptain Attachments c: Plant Manager, Department Heads, J. J. Hall - Houston, 0. D. Steffey - Ponca VAB.0001215834 S7T6T i r Jan. Feb Mar. Apr. May ** j1 \ o g VCM DOSIMETRY TREND, BELOW 1 PPM r\ PERCENT OF TOTAL SAMPLES LESS THAN 1.0 PPM tao It to o i i... tOn T -- -t cn o -J .i o If oo o i- - iF *k + -t* t ^ ! - i- t----- f ` -> - -1 J l4 . ..--. +---i ---------- t - i > Gd trj pa wM 2IJ f- -t J, r1 T -- 4------ 'I Ii L ,, T ii T ......... * _i -4 - *- 4 - 1- i -4 vXk.0001215835 ft VCM DOSIMETRY TREND, BELOW 0 .5 PPM PERCENT OF TOTAL SAMPLES LESS THAN 0.5 PPM I 7>r0n33 am tn i VAB.0001215836