Document b582yXbqe11292pYveDrKBn90

Company: DOW CHEMICAL CO T"*ocess: HDPE - POLY B Worksheet HAZOP-PC 1.00 Node: 19 Page: 1 +------------------------------------------------------------------------- ------------------------------------------------------------------------------------- + Node: 19 DR-2007 SEAL (PACKING AREA) Parameter: Flow Intention: ISOPENTANE SEAL PURGE .4GPM | +------------------+------------------+-----------------------------------+----------------------------+-------------------------- ----- + |GUIDEWORD|DEVIATION! POSSIBLE CAUSES I CONSEQUENCES | RECOMMENDATIONS |BY | No No Flow ADV-44912 FAILS FUSED POLY IN PERMISSIVE ON * CLOSE PACKING AREA PACKING FLUSH FOR REGULATOR FAILS DESTROY PACKING STARTUP MISOPERATION HEAT UP SHAFT MORE ISOPENTANE FLOW INDICATION h LOSS TO FLARE INTO PACKING/OUT SHUTDOWN TRAIN OF POT SCORE SHAFT SLEEVE TRAINING RF CHECK SEAL GC HOUSING BOLTING FOR FAILURE POINT ' re EVALUATE FLANGED INLET CONNECTION TO PACKING PURGE GC More Flow REGULATOR FAILURE WET POLYMER DR2007 HIGH FLOW SWITCH OUTLET/LOW POWDER TEMP SHUTS DOWN TRAIN * _ *. 'UO^76 DO * LvtTPA- Worksheet HAZOP-PC 1.00 Company: DOW CHEMICAL CO. T'vocess: HDPE - POLY B Node: 19 Page: 2 -t---------- ----------------------- --------------------- --------------------- ---------------------- ---.--------,,-------. ------------- --------------+ I Node: 19 DR-2007 SEAL (PACKING AREA) Parameter: Temperature Intention: 95 DEG C +-------------------- |GUIDEWORD DEVIATION POSSIBLE CAUSES CONSEQUENCES RECOMMENDATIONS BY | Less Lower Temp LOSS OF TRACING ON FEED LINE LOW AMBIENT TEMP WET POLY/LOW DR2007 DISCHARGE TEMP/SHUT DOWN TRAIN SEE LOW FLOW FROZEN SYSTEM EVALUATE GH TEMPERATURE ALARM EVALUATE CONDENSATE TO TRACING IOW FLOW SWITCH GH TRACE/INSULATE GH D2007/2017 (EVALUATE) +------------------+------------------ +---------------------------------- +------------------------------------ +---------------------------------- +----- + Worksheet HAZOP-PC 1.00 Node: 19 Page: 3 KING AREA) Intention: CONTAIN PROCESS MATERIALS "TM--+~------------------------------+ ES | CONSEQUENCES | RECOMMENDATIONS | BY | ----- +------------------------------------ +------------------ ----------------+----- + LEAKAGE OF CHECK PACKING GH HYDROCARBONS TO AREA SEAL DESIGN ATMOS PRESSURE +----------- ------- --------- +-----------------------------+---- + 3 00 3 0 3 3 1 ) O > O 3 3 3 3 1 )) m 33 3O0 3 1 J >3 D'D 3 3 3 3 ) 3 > do O a 3 3 3 3 D oooeeeeooi >0000060001 003000000J >0900000001 10^30000003 >Ot30OOOOO< 6500000003 >00060Q009< DO A 120980 CONFIDENTIAL Worksheet HAZOP-PC 1.00 Company: DOW CHEMICAL CO. "-ocess: HDPE - POLY B Node: 19 Page: 4 ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Node: 19 DR-2007 SEAL (PACKING AREA) Parameter: Level Intention: DO NOT OVERFILL D2007 +------------------ H | GUIDEWORD DEVIATION POSSIBLE CAUSES CONSEQUENCES RECOMMENDATIONS BY | More More INSTRUMENT GOES TO SV HEADER LEVEL SWITCH ON * Level FAILURE FILLS PACKING AREA D2007 MISOPERATION WITH LIQUID +------------- +---------------- -+---------------------------------- +------------------------------------ +---------------------------------+----- + DO A 120981 CONFIDENTIAL