The ability to model pressure vessel weld seams is a feature that is not available from all competing software packages. Although not required to perform basic (theoretical) ASME calculations, specifying weld seams provides a number of practical advantages:
Nozzles passing through weld seams, vacuum rings covering weld seams, etc. are obvious on the 3D display.
Designers can visually confirm good practices such as staggered longitudinal seams.
Cost estimates produced by COSTER are more accurate.
Shop fabrication drawings created by the Codeware Interface (Drafter 3D) are correctly detailed.
Proper weld procedures and welder assignments can be made by Shopfloor.
API-510 calculations made by INSPECT can use the proper local joint efficiency at each CML thus optimizing vessel life and inspection intervals.
The COMPRESS\INSPECT shell seams feature also creates a shell roll-out sketch that is included in the seams report.
Shell seams are turned on by default for all new pressure vessels created in Build 6310 and later. To view seams on a design created in an earlier Build:
- Open the file in the most recent version of COMPRESS or INSPECT.
- Select Action > Set Mode Options > Defaults > Long Seams.
- Check “Show longitudinal seams on cylinders, transitions, skirts, and hemi heads”.