Document mBwe9BaBYJKYexnKN4J1jqX3b

Mailed 5/16/85. VCH QUESTIONNAIRE Please fill out one questionnaire for each plant site where VCM is stored or loaded/unloaded in T/C's. 1. Size of storage vessels? *1^0(2) at-----------220-------------- cubic meters. Anbient temperature between 2. Storage temperature? 5 and 30 decrees C /-- C 3. Distance from tank(s) to nearest residence? Nearest village or community? 2000meters 2000meters. 4. Does prevailing wind blow towards a residential area? yes_______ no X 5. Have you done any vapor cloud dispersion modeling? yes_______ no X 6. Does your plant have an emergency plan which includes notification or warning the local community? yes no x 7. Have you made any changes in your operation or procedures - since the Bhopal incident? yes y no 8. Tank safety features: a. Is tank(s) diked? yes x no b. If a spill occurs, does VCM collect under vessel or is it directed away to a basin? under x away c. What special features does diked area or basin have? hard surfaced covered foam generationwater spray__x pumpother (explain) d. Is tank(s) sprinkled? yes x no e. Are flammable vapor detectors located where spill could occur? yes x no _______ f Are VCM area monitors located at tanks (for measuring ppm)? yes X no ______ g. 4/85 Do level instruments have a redundant (second) backup? yes X no _______ CTL020071 Quest! nnair Page 2 h. Do levels alarm at a control building which Is manned around the clock? yes ^ no 1. Does tank(s) have dual relief valves? yes no X (single) ' j. Is there rupture discs under relief valve? yes x no _______ k. How is space between relief valve and rupture disc monitored? pressure gauge x open bleed valve Pressure switch with alarm other l. Have you established a maximum fill level limit for your tanks? yes X no _______ If yes, what is limit? ________ 80% (Note: Please state limit as percent of capacity) m. Has tank(s) been internally inspected since original installation date? yes X no _______ If yes, please give age of tank and describe general condition and anv problems (of a non-propriety nature) found . Tank was inspected in January 1985 at ten years of age with no abnormal conditions being noted. " n. Any other safety features? Describe Each time the tank is filled the VCM is metered into the tank with a shutoff at a certain weight to be also a backup for the high level devices. 9. Pumps and lines: a. Are bottom lines on tank equipped with remote operated block valves (EBV's)? yes x____ no b. Do pumps have double seals? yes X no c. Are pumps sealless? yes no ____ CTl020072 Questionnaire Page 3 d. Are pumps all steel or wrought iron construction? yes X no____ e. Are pumps protected against a dead-headed condition (running with discharge valve blocked)? yes no___________ 2 If yes, how?__________ _____________________________________ f. Are pumps protected from a liquid blocked in condition? yes_______ no y If yes, how? ______________________________________________ g. Are pipelines protected from liquid blocked-in condition? yes x no _______ If yes, how? Relief valve.__________ _______ ____ h. Are pipelines protected from hydraulic shock of sudden valve closure? yes_______ no x i. What type gaskets are used in piping systems? Flat asbestos type x retained type(such as flexltalllc) x Uses both. 10. Tank car loading/unloading: ,, Not applicable a. Is the T/C area protected by water sprinkler? yes no b. Are water monitor nozzles installed? yes no c. Are flexible hoses used in the operation? yes no _______________ If yes, does the plant have a test program or procedure for the hoses? yes no Please describe CTL020073 Questionnaire Page 4 d. Have you ever had a hose fail under VCM pressure? yes no _ e. How is overfilling prevented? Magnetic level float gauge. Load scale. Other f . Is load/unload area diked for containing spillage? yes no 11. Do you ship or receive VCM by tank truck? yes no X 12. Is the plant in the U.S .A.? X outside the U.S.A. Note: This is being asked because U.S. Plants will have certain EPA required features whereas other countries may have different requirements. These distinctions will be used in the tabulations. Remember the survey is anonymous and no company will be identified. CTL020074 DOW CHEMICAL U.S.A. April 18, 1985 OYSTER CREEK DIVISION POST OFFICE BOX BB FREEPORT, TEXAS 77541 C. A. Gellner Certain-Teed Corporation P. 0. Box 253 Sulphur, Louisiana 70663 VINYL CHLORIDE SAFETY ASSOCIATION QUESTIONNAIRE Attached is a questionnaire concerning safety considerations in the storage and loading or unloading operations for vinyl chloride. Please have your plants fill in the data and return to me no later than Duly 15, 1985. From these I will work-up the data in tabular form to present at Tampa in September. All companies who submit data will get a complete set of the survey results. The questionnaires will be anonymous and no company names will be associated with the data. This will allow your company to determine how it compares to the overall industry with respect to VCM storage, loading and unloading. Your truly, Robert R. Oubre Oyster Creek Division Dow Chemical Company Freeport, Texas U.S.A. 77541 web attachment CtL02oq75 AN OPERATING UNIT OF THE DOW CHEMICAL C MPANY