AEF
Petroleum
- Mar 19, 2002
- 30
This one is generating a lot of debate between our pressure vessel engineering consultant and local jurisdiction.
Large new vertical column designed and fabricated to ASME Sec. VIII Div. 1 with a large stab in type re-boiler at the bottom. Re-boiler (LP steam) bundle is inserted into the column through a flanged nozzle and bolted on (tubesheet acts as flange). The PV engineer determined that since the column acts as the shell for the re-boiler bundle, the re-boiler is a chamber of the column and is to be supplied as a Part with a U-2 data sheet. As the owner/user inspector it is my opinion the column bondary ends at the flange, as per U-2(e)(I think; don't have a code book in front of me), and the re-boiler is its own pressure vessel and must be supplied with a U-1A, complete with a shell side hydro, prior to installation. Comments?
Large new vertical column designed and fabricated to ASME Sec. VIII Div. 1 with a large stab in type re-boiler at the bottom. Re-boiler (LP steam) bundle is inserted into the column through a flanged nozzle and bolted on (tubesheet acts as flange). The PV engineer determined that since the column acts as the shell for the re-boiler bundle, the re-boiler is a chamber of the column and is to be supplied as a Part with a U-2 data sheet. As the owner/user inspector it is my opinion the column bondary ends at the flange, as per U-2(e)(I think; don't have a code book in front of me), and the re-boiler is its own pressure vessel and must be supplied with a U-1A, complete with a shell side hydro, prior to installation. Comments?