Placing welds is a common task used to break the pipeline into spools. You can add new welds or edit existing welds to define spool breaks. Inserting a field weld, or modifying a workshop weld to/from a field weld, affectively splits the existing spool into two or more spools. The software assigns a new spool number to the resulting spool based on the highest existing spool number in the current pipeline. The example below shows a pipeline that consists of four spool assemblies:
If you make a modification to the pipeline by inserting a weld half-way between the pipe in SPOOL-B, the software responds by splitting that spool into two separate spools and assigning the new spool the name SPOOL-E, as shown in the example below.
Deleting a weld also affects spool contents. The software attempts to merge the two spools into one and assigns the lowest number, as well as the inherit attributes, to the merged spool.
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Changing the category of a component to Erection results in splitting the existing spool.
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Use Tools > Reassign Spool Identifier Command to clear all existing spool names and reallocate the spools using the naming settings defined in I-Configure. See Define spool import settings using a drawing style.
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At any time, you can select Update Current View
on the Tools toolbar to refresh the display of spool assemblies in the Pipeline Explorer and the Graphics window.
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Pressing CTRL+SHIFT during weld placement snaps the weld to the end of the pipe. Also, if there is ann open end at a fitting, such as a reducer, you can use CTRL+SHIFTto place a weld there.
You use the commands on the Welding menu or the Welds toolbar to place a weld in the pipeline. However, before you can place a weld, it must first exist in the materials database. The sample database delivered with the software contains most types of welds. If the type of weld you want to place does not currently exist in the database, you can use Material Editor to add it. See the Material Editor Help.
Types of Welds
The following table lists the types of welds. The corresponding Isogen symbol key (SKEY) for each weld type is in parentheses.
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Weld Site (WS), Weld Site Workshop Test (WSST), Tack Weld for Site (WST), depending what you select in the Weld Type list. |
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Weld Workshop (WW), Weld Workshop Shop Test (WWST), depending what you select in the Weld Type list. |
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Weld Offshore (WO), Weld Offshore Shop Test (WOST), Tack weld for Offshore (WOT), depending what you select in the Weld Type list. |
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Weld Field Fit (WF), Weld Field Fit Shop Test (WFST), Tack Weld for Field Fit (WFT), depending what you select in the Weld Type list. |
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Weld Offshore Field Fit (WOF), Weld Offshore Field Fit Workshop Test (WVST), Tack Weld for Offshore Field Fit (WOFT), depending what you select in the Weld Type list. |
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Weld Type List changes the type of weld for each of the previous five weld types. You can select Normal, Shop Test, and Tack. |
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Special Site Weld (WWSP) |
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Automatic Weld (WWA) |
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Support Weld |
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A shop test weld is a type of disposable weld that is used specifically for testing purposes, such as pressure testing. This type of weld also carries an allowance. It is a separate value to the FFW.
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A tack weld is a type of weld that is used to indicate components that are loosely attached during fabrication, with the final weld being done on site. Tack welds are used in conjunction with the other type of main welds by selecting the Tack Weld option on the Weld Type list on the Weld toolbar.
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