Document 9VDo52Nk8GJ3adR3OrjVNO2p

Company: DOW CHEMICAL Process: POLY-B Node: 8 Page: 1 -|------------------------------------ ---------- -------------------------- ------------------- ------- ----------- ------- ------- ------- T --------- -------------------------------------------------- ------- ------- ------- -------------------------------------------------- ----------- -----------------(- Node: 8 D-2004 TO R-2001 THROUGH C-2001A rameter: Flow Intention: 1200 NOMINAL ACFM +------------ --~--+--------- ------H----------------+---------------- ---------------------------------------------|------- 1- |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------------- +------------------- +------------------------------------- +----------------------------------------+------------------------------------- +------ + No No Flow COMPRESSOR SHUT NO REACTOR ADD N2 LINE TO GC DOWN COOLING PURGE SPARGER ON CV FAILURE PROD. QUALITY COMP. TRIP LINE PLUGGED/ TRAIN SHUTDOWN BLOCKED POLYMER FUSED SEE NODE 4 HIGHER RF CHECK VALVE TEMPERATURE INSTALLED BACKWARDS WRITE RF COMMISIONING PROCEDURE/CHECK LIST More More Flow NONE NONE NONE Less Less Flow SEE NO FLOW THIS SEE NO FLOW THIS SEE NO FLOW THIS RF/ NODE NODE MODE GC PURGE LINES TO FLARE OPEN WRONG SETPOINT ONFLOW CONTROLLER +-------------- +-------------- +--------------------------- +--------------------------------------+------------------------------------+------+ DO A 121102 CONFIDENTIAL Company: DOW CHEMICAL Process: POLY-B Node: 8 Page: 2 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Node: 8 D-2004 TO R-2001 THROUGH C-2001A rameter: Temperature Intention: 45 C SUCT./51 C DISCH. H---------------------------------1-- ----------------h-----------------------------------------I---------------- ------------------------- 1-~------------ -- --h------+ |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | H----------------------I-------H ----------------------------4.--------------------------------I--------------------------------------- ------h More Higher COOLING LOSS ON REACTOR TEMP REDUNDANT TEMP. GC Temp OVERHEAD EXCH. CONTROL PROBLEM MEASUREMENTS INSTRUMENTATION OVERLOAD INSTALL GC FAILURE. COMPRESS. DOWNSIZED EXCESS CATALYST. LUMP FORMATION IN COMPRESSOR. IMPROPER SETPOINT REACTOR. ACTIVATE KILL SYSTEM. EVALUATE LIMITING CATALYST FLOW GC PRODUCT QUALITY REFER TO NODE 4 GC REFER TO E-2001 CONTROLS ON NODE 6 GC Less Lower INSTRUMENTATION PRODUCT QUALITY SEE NODE 4 FOR GC Temp FAILURE INSTRUMENTATION KILL SYSTEM COMMENTS. FAILURE. LOSS OF EVALUATE ON LINE GC CATALYST. ANALYZERS SYSTEM IMPURITIES +--------------+-------------- +--------------------------- +-----------------------------+--------------------------- +---- + DO A 121103 CONFIDENTIAL Company: DOW CHEMICAL Process: POLY-B Node: 8 Page: 3 +-------------------------------------------------------------------------------------------------------------------------------------------------------------------- + Node: 8 D-2004 TO R-2001 THROUGH C-2001A I rameter: Pressure Intention: 187 PSIG SUCT/202 PSIG DISCH | +-------------------- |GUIDEWORD |DEVIATION | POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS BY | More Higher Pressure LOSS OF REACTION. ETHYLENE VALVE FAILURE. BYPASS VALVE FAILURE. VAPOR CONTROL VALVE FAILURE. SAFETY VALVE EVALUATE CLOSING RELIEF. ETHYLENE VALVE PRODUCT QUALITY. TRIP ON HIGH COMPRESSOR PRESSURE. OVER LOAD AND TRIP EVALUATE COMPRESSOR TRIP ON HIGH PRESSURE AND LOSS OF SUCTION FLOW. GC GC INSTALL SUCTION FLOW METER. GC EVALUATE TOTAL GAS FLOW MEASUREMENT. GC Less Lower REFER TO MORE GC Pressure PRESSURE RECOMMENDATIONS + ------------+------------------- +----------------------------------- +--------------------------------------+----------------------------------- +------+ DO A 121104 CONFIDENTIAL Company: DOW CHEMICAL Process: POLY-B Node: 8 Page: 4 +---------- ------ -------- -------------------------------- ------------------- ------------- ------ --------------- ------------- ---- ------------------- --------------- -----H I Node: 8 D-2004 TO R-2001 THROUGH C-2001A I1, rameter: Composition Intention: PRODUCT DEPENDENT MOL. WT. +-- -- -- -----------I ----------- + -- -- ----| -- ------- 1 ` --I-------- h |GUIDEWORD|DEVIATION| POSSIBLE CAUSES | CONSEQUENCES | RECOMMENDATIONS |BY | +------------------ +------------------- +-------------------------------------+---------------------------------------- +------------------------------------- +------ + III I I II +------------- +-------------- +---------------------------+----------------------------- +--------------------------- +---- + D0 A 12]105 confidfntial