Boundaries

Boundaries are pipe ends that do not end at equipment nozzles or other pipelines. Typical boundaries are off page connectors (OPC) and end of pipeway (EOP) for utility headers. To define a boundary component, select Process > Boundary List from the PlantWise window. This opens the Boundary List dialog

Boundary List.

To define a new boundary:

Enter the Boundary name in the Tag column.
Enter or select with the selection box the Boundary Type. The allowable entries are given as <element type> in "Boundary Input (.rpb file)".
There are several kinds of boundary components. They are identified as follows:
- EOP = End Of Pipeway boundaries are for pipelines that terminate at the end of a pipeway as a capped end or battery limit.
- EAB = End At Bent boundaries allow you to end a pipe at a specified bent in the pipeway. You can also indicate an offset from the indicated bent.
- Outlet boundaries act as an endpoint for a pipeline without being associated with a pipeway. Unless placed beforehand, outlets will automatically place during routing and can be moved afterwards. Pipelines with two unplaced outlet ends will not be routed automatically – at least one end must be manually placed first.
- Floating_end is a boundary component that is automatically defined by the program when you cut a pipeline with a Fenced Submodel.
Boundary List showing an End_at_Bent entry.
If the boundary is an end-of-pipeway (EOP) or an end-at-bent (EAB), select the pipeway on which this boundary lies using the Pipeway column.
- Select the end of the pipeway where the boundary is using the Location selection box. The selections are N, S, E, W as well as Start, End, Top, and Bottom (Top and Bottom are for boundaries associated with vertical pipeways).
  If the boundary is an end-at-bent, enter the bent number and the offset from that bent.
If the boundary is an Outlet, select the location. Location for an outlet boundary sets the direction the pipeline end should be directed towards.
Apply creates the boundary object in the process model and adds the boundary into the boundary list.

Note: initially, all boundaries are assumed to be placed automatically by the router, if you change the placement of the boundary element, the entry in the Placement column of the Boundary List will change to User.

To edit a boundary definition in the Boundary List:

Select the boundary to edit in the boundary list. This brings the boundary data into the entry fields.
Edit the data by entering or selecting as described above.
Apply transfers the changes to the process model and the boundary list.

To delete a boundary:

Select the boundary to edit in the boundary list. This brings the boundary data into the entry fields.
Select Edit > Delete.
Answer the prompt
```
Are you sure you want to delete the Boundary <Tag> 
```
with Yes if you wish to do so. Abort the Delete process by answering No.

Boundary List Menus

Like the Pipeline List, the Boundary List dialog contains two menus: File and Edit.

The File menu allows you to save the model (Save Model), save the model under another name (Save Model As), and exit the dialog (Close).

As well as deleting a boundary, the Edit Menu allows you to: rename a boundary (Rename Boundary), enter the Pipeline Editor (Pipeline), enter the Connectivity Editor (Connectivity), and enter the Pipeway Editor (Pipeway).

To exit the Plant Builder Boundary List dialog, click the Cancel button. Information not Applied is discarded.