Diagrams User Guide
Diagrams : Piping & Instrumentation Diagrams (P&IDs) : Flow Direction : Reversing Flow Direction for a Whole Branch
Reversing Flow Direction for a Whole Branch
Diagrams application provides functionality to reverse flow direction of a branch. The command is accessible from main menu of from context menu for any branch components:
After the command is issued all necessary changes will be done to branch hierarchy in database and its representation on current drawing is changed to fit reversed flow. The changes done to database are following:
•
Order of elements below all segments belonging to the branch is reversed.
•
All OPCO elements are changed to OPCI and the other way round. As a result of that sequence of connections between segments belonging to the branch is reversed.
•
All OPC connections referring to other branches are disconnected.
•
Arrive and Leave attributes of all components below segments (except OPC elements) are switched.
•
TREF/HREF attributes of branch and segments below it are adjusted accordingly to new flow direction.
Corresponding changes done to shapes on current drawing are:
•
Start/end of tube shapes is reversed.
•
Type of OPCO shapes is changed to OPCI (and OPCI to OPCO), but the shapes are not replaced.
•
Directional components (e.g. non-return valves) are reversed and their connection points are changed to fit Arrive and Leave attributes in database. The other components are not changed.
Note:
If the directional component has branching connection it may not be possible to restore the connection after reverse. In such situation the branching point will be disconnected on drawing and in database with appropriate message in message log.
In case branch is located on several drawings, user is prompted to automatically update shapes on other drawings as well.
If other drawings containing parts of reversed branch are not updated (user answered “No” to above question or it was impossible to edit the drawings e.g. because they were claimed by another user) there is inconsistency between the drawings and database data. Such inconsistencies are detected and fixed on opening drawing and by Consistency Check.
1974 to current year. AVEVA Solutions Limited and its subsidiaries. All rights reserved.
AVEVA Logo