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Re:urgent advise needed

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Dear karthik, we had also faced same problem in our coker history, to avoid choking of SP6  increse the purge steam presurre of SP6  and also keep open the body purge steam R/O bypass valve  in onlne drum .  because steam goes through  R/o is very less and it will lead to coking in sp 6. after done it  now a days we dont have any problem with sp6 since long time

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