Valve elements for assessment are selected from a GIS layer that stores point features for line valves. In some circumstances, all line valves are imported into the model as junctions or valves. In this case, valves elements can also be defined by selection sets that contain junctions or valves. Selection sets need to be predefined before running the Criticality Assessment Manager. The selected valve elements can be further filtered for the purpose of user-customized valve assessment. For details about how to select valve elements, please refer to the dialog box of Set Valve Sources. Note that pumps and valves in the model can be included into the set of assessment elements.

For the mode of Based on GIS Layer Elements, all valves selected from the GIS layer are imported into the model as assessment junctions. Any pipe associated with one or more GIS layer valves is broken into several segments dependent upon the number of GIS layer valves associated with the pipe. Each segment of a divided pipe is treated as an individual pipe in the assessment model, and identified as a default combination of the original pipe’s ID, “_”, and a zero based number.  

The Criticality Assessment Manager (CAM) automatically conducts a snapshot hydraulic assessment for each assessed valve. It can run a steady (snapshot) simulation at assessment time. The Criticality Assessment Manager also checks hydraulic parameters such as pressure and velocity against the specified thresholds.

Assessment Method

Based on Assessed Elements - Hydraulic assessment is based solely on an assessment element. A hydraulic simulation is run after closing all pipes connecting to the target assessment element.

Based on Connecting Sectors - Hydraulic assessment is based on both an assessment element and its connecting sectors. There might be one or more pipes that connect to the assessment element and are in either upstream sector or downstream sector. For each connecting pipe either downstream or upstream of the assessment element, CAM closes the connecting pipe and runs a hydraulic simulation for hydraulic assessment. The upstream and downstream sectors are defined by the related pipe's geometric direction. Only one connecting pipe is closed in a hydraulic simulation, and there are multiple hydraulic simulations for a specified assessment element.

Assessment Element Data

Valving Elements

Subset Management

Further select a portion of the already selected valves.

OK - Use the above selection and close this dialog box.

Cancel - Cancel the above operation and close this dialog box.

Model Pumps/Valves

Assessment Pressure Threshold

Assessment Criteria Data

Run - Click on this button to run a valve criticality analysis. The CAM module will evaluate your network based on the Active Network and Simulation Options defined in the Analyzer. The CAM module progress is displayed on the progress bar. A summary is displayed in the Message Board on the Input Data Screen.

The CAM module results are automatically stored after each successful CAM analysis and saved with your project. Valve Criticality Modeling Reports can be viewed at any time by starting The CAM module in the Add On Extension Manager, and selecting the Result button.

Results - Click on this button to view the output of the valve criticality analysis.  Note: Clicking on this button is not required after a successful run if the Show Results Automatically option is checked.

Close - Click on this button to close the valve criticality modeling dialog box.

Set Valve Data Source

The dialog box of Set Valve Data sets data sources for valves for use in the InfoWater Pro CAM valve assessment. Valve data is populated from a specified data sources, possibly with certain selecting criteria.

Valve Data Source

Extended Model Pump/Valve Assessment Selection

Any pumps or valves in the model can be added into the set of assessment elements through the dialog box of the Extended Model Pump/Valve Assessment Selection.

Select by Element Type - To select by element type, select the element type from the pull-down menu. Elements listed with the Model Element Type chosen will be selected or removed from selection.

Model Element ID - Lists the ID of the model element.

Model Element Type - List the type of the model element.

Selection - Indicates if the element is selected for assessment.

OK - Use the above selection and close dialog box.

Cancel - Cancel the above operation and close dialog box.