Document rBgoebQkV8BXxkeN55mpnaYvG

Company: DOW CHEMICAL Process: POLY-B Node: 1 Page: 1 +--------- ------ ----------------------------- --------- -------------- ----------------- ------------------- --------- ----------------------- --------------------- ---------- h Node: 1 I-PENTANE MAKEUP TO D-2004 rameter: Flow Intention: 0-20 GPM H ----------------- 1---------------------+------------- ---- -------- ----------H ---------- ----------- ---------------H -- ---------------- ------------- --+-- h |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------------- +------------------- +------------------------------------- +--------------------------------------- +------------------------------------- +------ + No No Flow VALVE CLOSED RUN PUMPS DRY DUAL LEVELS * DRY HEADER PUMP HOT REACTOR P DOWN NO OVERHEAD SPRAYS AUTO START ON * FALSE D-2004 LEVEL INDICATION MANUAL VALVE NO PUMP FLUSH SPARE DRY HEADER PUMP CLOSED LINE PLUGGED ENSURE MANUAL RF VALVE ON START-UP CHECKLIST More More Flow VALVE FAILS OPEN REACTION DIES REMOVE BYPASS LEVEL MEASURE OVERFILL D-2004 -> FAILURE COMPRESSOR WRECK CONSIDER LEVEL CONTROLLER TUNING LOSS OF dP CELL DEVIATION ALARM ERROR PURGES 2 PUMPS ON LINE LOWER DRY HEADER FCV BYPASS OPEN PRESSURE GC * Reverse Reverse Flow BOTH HEADER PUMPS C2H4 SATURATED DOWN SOLVENT INTO CHECK VALVE GC HEADER RUPTURES HEADER HEADER PRESSURE REDUCED +-------------------+------------------- +------------------------------------- +--------------------------------------- +--------------------------------------+------1 Do CCOoknic^-t oentx^ Company: DOW CHEMICAL Process: POLY-B Node: 1 Page: 2 +---------- -------------------------------- ------------ -- -- -- -------------- ----------------------------- ---------- ---------------------------------------------------- ---- ------ _,,,,+ Node: 1 I-PENTANE MAKEUP TO D-2004 rameter: Composition Intention: 95%1-P, 5% HEX H------------------------H--------- -----------------|-------------------------- ------- ---------- 1------------------------ --------------- ----I---------------------------------------- ------ 1-------H |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +----------------- +---------------------+------------------------------------- +-----------------------------------------+-------------------------------------+----- + More More T-206 FEED REACTOR COOLING HAZOP VEHICLE TH Comp COMPOSITION T-206 REDUCTION RECOVERY AREA HEXANE TEMP PROB T-206 MORE HEXANE TO PRESS UPSET T--205 GC PROB DRIER SYSTEM INSTALL GC ON MORE ENVIRONMENTAL T-206 FEED GC EMISSIONS T-206 TEMP, PRESS * ALARMS +------------------ +-------------------+----------------------------------- +--------------------------------------+----------------------------------- +------+ 121083 DO A __ .iYTAI Company: DOW CHEMICAL Process: POLY-B Node: 1 Page: 3 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- -- Node: 1 I"PENTANE MAKEUP TO D-2004 rameter: Contamination Intention: NO WATER! +~----------------t---------------------------------------------I-------------------'--------------------t--------i- |GUIDEWORD|DEVIATION| POSSIBLE CAUSES j CONSEQUENCES J RECOMMENDATIONS |BY | + |-------------------+--------------------+------------------------------------- +--------------------------:------------ +------------------------------------- +------ + More More Cont T-206 UPSET REACTION KILLED WATER EXCHANGER FAILURE CATALYST KILLED VALVING ERROR REFLUX WATER REMOVAL MALFUNCTION T-206 T, P ALARMS * ELIMINATE ALL BUT RF ONE CROSS TIE AND INSTRUMENT BUTENE T-205 UPSET REACTION IN EVALUATE BUTENE BB ANALYZER FAILURE CATALYST VESSELS REMOVAL SYSTEM CHANGE PRODUCT FOR CATALYST AREA PROPERTIES INFLUENCE TRAIN 1 PRODUCT -> CPE FEEDS PLUG LINES +-------------- +-------------- +--------------------------- +-----------------------------+--------------------------- +---- + o ^ company: dow chemical Process: POLY-B Node: 1 Page: 4 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------+ Node: 1 I-PENTANE MAKEUP TO D-2004 rameter: Temperature Intention: 40C OR LESS +------------- +-------------- +--------------------------- +-----------------------------+----------------------------+--- + |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------------ +------------------- +------------------------------------- +--------------------------------------- +-------------------------------------- +----- + More Higher E-700 OR CROSS CAVITATE HEADER ALARM HEADER TEMP GC Temp EXCHANGER AND D-2004 PUMPS PROBLEMS FLASHING ACROSS FCV -> LEVEL CONTROL PROBLEMS FLASH ACROSS FLOWMETERS SPRAYS IN DEMISTER POOR FUNCTION SEAL FLUSH PROBLEMS SEALLESS PUMP SHUTDOWN ON TEMP +------------------ +-------------- +----------------------------------- +--------------------------------------+------------------------------------+------+ DO A 121085 CONFIDENTIAL