Updating link criticality from CLA results
Link Criticality and Criticality Count values can be updated in the network from results generated by a Critical Link Analysis (CLA) Run. CLA results are processed against criteria specified in the Update Criticality dialog.
To update pipe Criticality and Criticality Count values from CLA results:
- Open a checked out network to be updated
- Select Update criticality from the Network menu. This will display the Update Criticality dialog
- On the Update Criticality dialog:
- Select a Critical Link Analysis Run to automatically select the Base Simulation, Critical Link Analysis Simulations and set the other parameters on the dialog from that run.
- Click Update
The Criticality and Criticality Count values of all links present in the base simulation (or links in the Update Selected Links Only selection list, if included) will be cleared.
For each selected Critical Link Analysis simulation:
- The number of items failing any of the criticality criteria defined on the Update Criticality dialog are assessed
- The number of failures during the Critical Link Analysis Simulation are compared with the number of failures during the Base Simulation.
- The increase in failures between the Critical Link Analysis Simulation and the Base Simulation are used to look up a Criticality Value in the Criticality Criteria Grid on the Update Criticality dialog.
- The highest Value corresponding to the failure to meet each criteria is used to update the Criticality field of the link object for which the Critical Link Analysis simulation was run.
- The Criticality Count field is populated with the count of items that are critical, which may be the number of properties, connections, customers or nodes as defined when carrying out the Critical Link Analysis Run.Note: this field will contain a count of zero if the pipe is non critical.
The criticality update is based on values stored in the Critical Link Analysis Run log file.
If the Critical Link Analysis was carried out on isolation areas, all pipes in each isolation area will be assigned the same criticality values.
