Home › Forums › Coking › Technical › Sludge & Fines › Blowdown Water Seal Drum Piping Movement This topic contains 0 replies, has 1 voice, and was last updated by EUCLIDES PRIETO 15 years, 2 months ago. Author Posts December 28, 2005 at 5:56 pm #4269 EUCLIDES PRIETOParticipant Does anyone has experienced problems with the piping loop between the water seal drum and the blowdown drum? In my case,we are experiencing high vibration during water and steam injection. Any comments? Thanks, Author Posts You must be logged in to reply to this topic.