Acceptable leak rate - CDU column
Acceptable leak rate - CDU column
(OP)
Dear all
Does anybody have idea of acceptable leak rate for partial draw of tray?
Tray is for light gas oil and puparound drawing. Rate of LGO is about 80m3/h and 400m3/h for PA. Column is 6m diameter. Tray has two chimneys and two overflow weirs 1.5m high.
Regards
Does anybody have idea of acceptable leak rate for partial draw of tray?
Tray is for light gas oil and puparound drawing. Rate of LGO is about 80m3/h and 400m3/h for PA. Column is 6m diameter. Tray has two chimneys and two overflow weirs 1.5m high.
Regards





RE: Acceptable leak rate - CDU column
RE: Acceptable leak rate - CDU column
What should be the initial water level, before the leak test is going to start? The maximum one, 50% of max. level, or something else? Where can we find standardized procedure for tray leak testing?
RE: Acceptable leak rate - CDU column
The usual leak test procedure for draw-off trays is as fallows:
Block drain holes with putty.
Fill with water (check water quality - maximum chlorides).
Mark water level (above 50%) and leave for 30 minutes; level shall not drop by more than 50 mm, unless otherwise specified.
Allow water to drain and check flow (slope of gutters/trough).
Remove all putty from drain holes.
Check cleanliness and arrange acceptance.