Document DG3qJLgvwEBbVNgxaDq0y1Y9B

Company: DOW CHEMICAL Process: POLY-B Node: 17 Page: 1 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- - Node: 17 AGR-2001 OIL CIRCULATION I rameter: Plow Intention: 8 GPH MINIMUM | +----------------H---------- ------ j GUIDEWORD|DEVIATION| POSSIBLE CAUSES | --------------H----------^ CONSEQUENCES | RECOMMENDATIONS |BY | H----------------H---- ----------H------------------ --------------------+-- ----------------------------+-- --------- ---------------------------------- I"------H No No Flow PUMP SHUTDOWN SEAL FAILURE AUTO START SPARE GC VALVE FAILURE BEARING FAILURE PUMP VALVE BLOCKED SPILL DRY TANK SHUTDOWN REDUNDANT LEVEL GC REGULATOR FAILURE ON RESERVOIR POT SLURRY IN THE LINES EVALUATE GC SEAL FAILURE SEPARATE OIL ON ANOTHER VESSEL SYSTEM OPERATOR TRAINING GC LOW FLOW ALARM GC EVALUATE FILTER INSTALLATION GC EVALUATE THE GC SIZE THE OIL POT EVALUATE THE CONTROL MODE OF THE PRESSURE CONTROL SYSTEM GC INSTALL PSV ON THE OIL PUMP GC More More Flow BACKPRESSURE STARVE OTHER REGULATOR FAILURE SEALS SEAL FAILURE MIS-SET ROTOMETER OPERATOR TRAINING DT ALARM DIFFERENTIAL PRESSURE SWITCH GC EVALUATE HIGH GC FLOW ALARM +--------------- +----------------+----------------------------- +------------------------------- +------------------------------ + Company: DOW CHEMICAL Process: POLY-B Node: 17 Page: 2 Node: 17 AGR-2001 OIL CIRCULATION rameter: Temperature Intention: 100 - lio F. |GUIDEWORD j DEVIATION | POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS BY | More Higher Temp NO COOLING HEATER FAILURE NO/LOW FLOW SEAL FAILURE DESIGN COOLING SYSTEM EVALUATE HEATER CONTROL SYSTEM GC GC INSTALL TEMPERATURE ALARMS GC PUT EXCHANGER ON THE PUMP DISCHARGE GC HAZOP COOLING SYSTEM GC Less Lower Temp HEATER FAILURE SEAL FAILURE COOLER IN SERVICE DAMAGE OIL PUMPS TEMPERATURE ALARMS GC DETERMINE MINIMUM OPERATING TEMPERATURE GC EVALUATE GC INSULATION NEEDS +------------------ +------------------ +----------------------------------- +--------------------------------------+------------------------------------+------+ CcoOnNfFtt df:n2t7t1a3l0 Company: DOW CHEMICAL Process: POLY-B Node: 17 Page: 3 H----------- -------------- ------------------------------------------ --------------------------------------- ----------------------------------------------------- ---------- -------------- ----------------- -------------------- -- Node: 17 AGR-2001 OIL CIRCULATION rameter: Pressure Intention: ------------------------------------------h I GUIDEWORD DEVIATION POSSIBLE CAUSES CONSEQUENCES RECOMMENDATIONS BY More Higher Pressure DETERMINE PRESSURE RATING ON SEAL HOUSING GC DO A 121131 CONFIDENTIAL