Split Pipes and Signal Lines

This procedure is used to split a pipe or signal line into two separate pipes or signal lines.

In the case of pipes, the properties of the previously unsplit pipe are assigned to the new pipe located before the split in terms of the pipe flow of the unsplit pipe. These properties are also assigned to the new pipe after the split, except for those properties which are required to be unique, which are replaced by the project null symbol (e.g. "?").

To split a section of a pipe of as a branch of that pipe, refer to Split off Branches.

For details of the use of this procedure in the context of drawing P&IDs, see Draw Pipes and Connections.

Note: Pipes may also be split by inserting a break symbol. Refer to Insert Inline Fittings.

Note: Referenced pipes cannot be split. An error message will be displayed if this is attempted. Refer to Label by Selection of a Reference Object

Note: Not applicable to drain pipes.

Example

The white section of the line indicates where it has been split.

Procedure

1. Start the procedure by either:

   • selecting the pipe to be split on The Drawing Page, then right-clicking and selecting Pipes>Split to Main from the shortcut menu (this option is not available for signal lines), or

   • selecting the Split To Main Pipe option in the Modify group of the Home tab.

2. If the second method of starting the procedure is selected, the Command prompt will display:

   Pick a pipe group to split:

   Pick the pipe or signal line that is to be split.

   If the first method of starting the procedure is selected, a pipe will already have been selected.

3. The Command prompt will display:

   Pick a point on pipe joint to split the selected pipe joint:

   Pick the point on the pipe or signal line where the split is to occur.

   Note: A pipe must have been labelled on both sides of the select split point.

4. The pipe or signal line is then split at the selected point into two new pipes or signal lines.

   If a pipe is split, the properties of the previously unsplit pipe are assigned to the new pipe located before the split in terms of the pipe flow of the unsplit pipe. These properties are also assigned to the new pipe after the split, except for those properties which are required to be unique, which are replaced by the project null symbol (e.g. "?").