Document NEo9wmGb9o55mVpqLjDqR5adR

Worksheet HAZOP-PC 1.00 Company: DOW CHEMICAL CO. T~-ocess: HDPE - POLY B Node: 4 Page: 1 +------------------------------------------------------------------------------------------------------------------------------------------------------------------ -- Node: 4 DR-2006 Outlet to Transfer System Parameter: Flow +-------------------- Intention: 33,000 Lb / Hr |GUIDEWORD DEVIATION POSSIBLE CAUSES CONSEQUENCES RECOMMENDATIONS BY | No No Flow Rotary valve Plug dryer. Alarm rotary KW failure. Powder entrainment feeder shutdown. Polymer plug. to Sorbathene. Train shutdown. Trip feed to KW DR-2007. Monitor amps on * motor (MDR-2008) Reverse Reverse Flow Excessive wear. Incorrect clearances. Plug dryer. See NODE 4. Evaluate system location of blower control. KW Two rotary feeder * valves installed H----------------------------------------- 1----------- ------------------------------------I--------------------------- ------- ------I--------- 1- A 12095? CONFIDENTIAL Worksheet HAZOP-PC X.00 Company: DOW CHEMICAL CO. T''"Ocess: HDPE - POLY B Node: 4 Page: 2 +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + Node: 4 DR-2006 Outlet to Transfer System Parameter: Temperature H-------------------- Intention: 80 - 90 Deg. C |GUIDEWORD DEVIATION POSSIBLE CAUSES CONSEQUENCES RECOMMENDATIONS BY | Less Lower Loss of heat to High solvent level HAZOP water GC Temp the jacket. in the powder. system. Too high feed rate. High emissions. High hydrocarbon Limit flow to * Loss of levels in the DR-2007 / See Sorbathene system check hopper. Node #11. Loss of nitrogen to DR-2008. HAZOP Sorbathene. GC Loss of water to the jacket. Fouled jacket. +------------------ 4------------------- +----------------------------------- +------------------------------------- +----------------------------------- +------+ DO A 120953 CONFIDENTIAL