Accessory Parts

Accessory parts are parts that are not graphically represented in any of the Plant Engineering CAD documents (3-D layout plan, isometry, P+ID). Although they do have a part master data record in the part data source (HELiOS database or HiCAD catalogue), no corresponding file with a 3-D data model exists. However, fitting Plant Engineering parts in the 3-D layout plan often requires such parts that already contain all necessary accessories for a Bill of Materials - even if these accessories are not visible in the graphic. To fulfil this requirement, the Plant Engineering part needs to be linked with the corresponding accessory parts. For this purpose, the data records of the accessory parts are assigned to the data record of the Plant Engineering part.

The selection of the accessory parts - the so-called accessory set - can depend on many different factors, e.g. the diameter of a flange. For instance, you will need 4 bolts for DN 50; for larger diameters, 8 bolts will be required. The accessory set must therefore be defined for each variant of a part.

If accessory parts are assigned to a Plant Engineering part, and the Include accessory sets checkbox is activated on the Part selection tab of the Plant Engineering Settings dialogue window, not only the attributes from its own master data, but also those of the accessory parts are written to the part when it is inserted in the 3-D layout plan. This means that the accessory parts will be available in the Bill of Materials, even if the drawing is loaded on a workstation that has no access to the part data source from which the attribute data originate.

The procedure for the assigning of accessory parts to a Plant Engineering part depends on the selected part data source:

• Accessory parts with Catalogue as part data source
• Accessory parts with Database as part data source

Settings: Bills of Materials (PE) • Settings: Part Selection (PE)