Weld Numbering

The user can assign unique numbers automatically to welds in the Spool module, thereby providing complete weld traceability. Numbering can be applied to an individual pipe, branch or spool drawing. These unique identities are stored in the DESIGN database, and are available to use in Isodraft (see the WELDNUMBERS command). If the user uses this feature, they can also create a table of all numbered welds (according to their own specifications) to be included on the isometric.

If the user uses weld numbers from the DESIGN database, temporary weld numbers can be output by Isodraft at end points where the weld actually belongs to another drawing. These temporary numbers are also included in the weld table. This will allow the fabricator to identify the end preparation to be applied to the termination joint even though the weld is not to be made for this drawing. Temporary weld numbers will include the weld prefix but will use letters instead of numbers.

If the user does not use the automatic weld numbering feature of Spool, the user can number the welds on an isometric with Isodraft using the WELDNUMBERS command (however, numbers generated this way are not maintained between revisions). The user can also use the WELDNUMBERS command to specify that a table of all numbered welds will be drawn immediately above the title block.

Attached welds can be shown on the isometric either in individual balloons or, if there are more than a specified number of them, as an arrowed message in a single ellipse (with the numbers separated by slashes). The user specifies this by appending AWELD BALLOON number to the WELDNUMBERS command.

Either with numbers from the DESIGN database, or generated within Isodraft the user can specify the size of the characters for the numbers, and whether fabrication or erection welds or both are to be numbered.

Note that by combining the DIMENSIONS OFF and WELDNUMBERS options it is possible to obtain un-dimensioned isometric drawings with weld numbers on them. These are useful for recording the results of weld radiography inspections.