Piping
Spooling
: Special Cases
Special Cases
The following sub-sections contain descriptions of some special cases within SPOOL.
Shop Flag Status
The Shop Flag Status describes some of the special cases for the Shop Flag. These can effect the placement of Spool Breaks and the handling of some elements.
ATTAchments
While ATTAs do have a Shop Flag, its status is ignored when spooling a piping network. For example: a shop false ATTA does not break a spool.
Note:
The leave tube of a spec break ATTA (SPECBR attribute is True) still has an active Shop Flag.
Leave Tubes of Welds
If a spool is broken by inserting a field weld into the leave tube after the last component in a pipe, the section between the weld and the end of the tube is reassigned as the leave tube of the weld. Inserting a field weld is a modification to the DESIGN database and immediately after its creation the weld and its leave tube are not in the Spool Drawing.
Add the weld and its leave tube by updating the numbering of the Spool Drawing, in the normal way.
Welds for OLETs
An OLET element has 3 p-points: P1 (p-arrive) and P2 (p-leave) in the main tube and P3 in the off-line leg. P1 and P2 are coincident and are normally treated as a single point.
A problem can occur if points P1 and P2 have Ckeys of BWD or SWD. By default this should give two welds, one for each point, but the software recognises the OLET as a special case and only allocates one weld.
1974 to current year.
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