Assign Bending Machine Reference

You can define a default Bending Machine Reference for a pipe specification. You can then modify a Bending Machine Reference in the pipe structure.

Default Bending Machine Reference in Pipe Specification

You can specify a default bending machine reference to each pipe specification using Paragon.

Whenever a pipe is created, the BendMacReference attribute is populated with the default value assigned to the piping specification.

Run Paragon and navigate to the pipe specification to which a default bending machine reference is to be assigned.

Modify the Value field of the :PFBendMacReference attribute, the value must point to a valid Fabrication Machine World (FMWL), Group (FMGRP) or Machine (FMBEND).

The bending machine reference must be located in the current MDB.

Run AVEVA PDMS and create a pipe with the modified pipe specification. Refer to Create Pipe for further information.

By default, the BendMacReference attribute is assigned with a valid default bending machine reference from the pipe specification.

Modify Bending Machine Reference in Pipe Models

If a pipe bend Radius is too large and needs to be changed to a smaller bend radius for design reasons, then the BendMacReference attribute for the zone, pipe or branch can be modified to point to another Fabrication Machine World (FMWL), Group (FMGRP) or Machine (FMBEND).

From the main menu bar, select Pipe Fabrication > Modelling > Assign Bending Machine to display the Assign Bending Machine window.

Click CE to identify the currently selected SITE, ZONE, PIPE or BRAN as the working element.

The list of elements displays the Name, element type and BendMacReference attribute value of each element in the selected pipe structure. You can select one or more elements to modify.

Select the Highlight selected elements check box to highlight the selected table item in the 3D graphical view.

Select FMWLD, FMGRP or FMBEND and click Apply to assign a new BendMacReference.

The Assign Bending Machine part of the Assign Bending Machine window allows you to assign a new bending machine and modify the bend radius of the selected element.

Click a Apply to assign a new bending machine and modify the bend radius of the selected element.

Modify Bend Radius

If the Modify Bend radius check box is selected, the bend radius of the selected element is modified by default.

The example below shows the modified bend radius as part of a pipe structure.

Tidy BendMacReference Element

If the Tidy check box is selected, the BendMacReference attribute value of the selected element is tidied by default. If the BendMacReference attribute value of a branch is the same value as the owning pipe, the attribute value is removed from the branch.

The example below shows a pipe and branch with a duplicate BendMacReference attribute value.

When the Tidy check box is selected, the BendMacReference attribute value is removed from the branch.

Details

The Details tab displays a list of change details for the pipework structure, calculated when you assigns the bending machine.

Errors

The Errors tab displays a list of errors for the pipework structure, calculated when the user assign the bending machine.

Bending Error Types

There are three different error types that can be checked for:

• Not enough tube length before/after bend.

  There is not enough straight tube length before or after a bend to change the bend radius. An instance can occur when changing a bending machine reference that uses a larger radius value.

  The example below shows the effect of enlarging a bend radius on a tube.

  

• Bending machine cannot handle the outside diameter

  The new bending machine reference does not have a suitable bending dimension for the outside diameter of the target pipe.

• BendMacReference is not defined.

  The BendMacReference attribute value is not defined for any of BRAN, PIPE and ZONE elements in the pipework structure.