(conoco) Interoffice Communication To Jim Barton From Alton Reeves Date September 18, 1978 Subject VAPOR RELEASE On the 18th of September at 1945 p.m., Harold Sanders was venting the inerts from 741 Reactor over into the recovery unit when the gasket blew out on the bullseye on the recovery line.

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J 4/28154 raorosco rules ENVIRONMENTAL PROTECTION AGENCY [40CFR Part 61] additional actions.

Copied by MCA for distribution to .legal Advisory Committee '. . ..

i SEMIANNUAL REPORT SEPTEMBER 1, 1979 THRU FEBRUARY 29, 1980 CONOCO CHEMICALS COMPANY PVC PLANT ABERDEEN, MISSISSIPPI 61,70 (c) (1) No emissions from the control device (incinerator) exceeded 10 ppm vinyl chloride averaged over any hour period (commencing on the hour) during this reporting period.

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I- conoco Interoffice Communication # To Jim Barton From Alton Reeves :Dat September 18, 1978 Subject w* VAPOR RELEASE On the 10th of September at 0710 a.m., Panel operator Steve Kilgore was venting the inert from 742 reactor.over into the recovery unit.

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VCM RELEASES WHICH OCCURRED FEBRUARY 10, 1979, APRIL 14, 1982 AND JANUARY 8, 1983 BECAUSE OF THE PREMATURE FAILURE OF A REACTOR RUPTURE DISC Summary: The premature failure of rupture discs which is defined as failure below the disc pressure rating is not new.

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