Document 91ZgR6z9eDr1z5N5Ly4ME1ymL

August 17,1993 Dow U.S.A The Dow Chemical Company P 0 Box 400 Plaquemine Louisiana 70765-0400 Steve Ledoux Bldg. 4601 cc: Doyle Haney, Bldg. 4601 Bruce Miles, Bldg. 4601 REACTIVE CHEMICALS REVIEW HELD ON AUGUST 12, 1993 Project: New R-1300 Thermal Chlorinator at Chlorinated Methanes Plant Project rep: Steve Ledoux Attendees: Emmett Brown, Brandon Choate, Seb Corbino, Doyle Haney, Steve Ledoux, Chris Messelt, Bruce Miles, John Monroe, Maurice Oubre, Allan Sandow, Joe Schell Action Items: 1. Verify that the electrical heat tracing on the chlorine line from the header trips at 125 degrees C and that the heat tracing is self-limiting. 2. Since a deflagration or detonation in R-1300 is more probable during a start up, evacuation of personnel from the reactor area during start-up should be included in the start-up procedures. 3. Make sure that a leak repair sealant is on the approved sealants list before using it. If it is not on the list, have it tested in the Reactive Chemicals lab. It has been reported that compositional changes have been made in some sealants with just a minor change in the sealant number, which could be overlooked. 4. Replacement of equipment in the chlorine system seldom occurs and Reactive Chemicals training on compatibility of different materials of construction with chlorine is conducted at the Methanes plant annually; however, it was suggested that any new equipment for the chlorine system should be tested for identification of material of construction before it is used. '5. Consider installing a pressure frequency analyzer in the reactor inlet line to warn of swings in the feed pressure which would indicate an unstable reactor. CONFTnFNTIAl DO 00671 Please respond in writing to the committee chairman within one month as to action taken or planned in regard to these concerns. Joe Schell Reactive Chemicals Committee 4*00* Gerald Wagener, Chairman Reactive Chemicals Committee 00NF70FNTTAL D0 006716