WaterSight - Pipe Break Results


Product(s): WaterSight
Area: Documentation

 

Map view

The Map automatically zooms to the location of the event, highlighting all customers affected by the pipe break event, as well as pipes affected and valves to close.

Customers are represented with the following colours:

In the identification of the affected customers all those that always have low pressure or no pressure even without the event (no pressure or low pressure chronical customers) are ignored.

Pipes are represented with the following colours:

User can click in any element in the map to see the results for a specific element. Graph result will only be available if the event simulation run is Extended Period type, please see below for more information.

Using the map controls, the user can also analyse several hydraulic parameters, such as pressure, flow, velocities, etc.

Map Controls

Layers: Use the layers option located on the top of the map to enable or disable additional geospatial information as well as the 3D context. Any GIS information that is uploaded in WaterSight (through shapefile upload in the GIS administration page) will be here displayed.

Model Element Visibility: The user can control the elements that are shown on the map, such as:

Model Symbology

Side-by side view:

Side-by-side view will only be available for emergency events that were created in the last 7 days. If side-by-side view option is on, it will be possible to easily compare the baseline scenario (with no event) with the event scenario. User can click in any element in the map to see the results for a specific element and compare pre and post event conditions. Graph result will only be available if the event simulation run is Extended Period type, please see below for more information.

Summary

Statistics about the simulated pipe break event:

Note: If you experience a problem with network outage segmentation and you use a check valve on the pipe next to a reservoir, try placing the check valve on the next-downstream pipe (rather than on the pipe directly adjacent to the reservoir). We are working toward improvements of the handling of this situation.
 

Affected Customers

Customers Without Water

Customers that in the baseline scenario (with no event) had pressure and during the event scenario end up with no pressure, during at least one time step of the all simulation period.

Low Pressure Customers

Customers with low pressure:

- All customers that in the baseline scenario (with no event) were above the minimum pressure threshold (defined in the administration, under the service expectations tab) and during the event scenario end up with no pressure, during at least one time step of the all simulation period

- All customers that were already below the minimum pressure in the baseline scenario (no event) but had a pressure decrease greater than 15% with the event, during at least one time step of the all simulation period

Examples: Low pressure threshold: 50psi
 
Case 1: Without event 70, With event 60 -> do NOT highlight (good conditions)
Case 2: Without event 70, With event 40 -> highlight (it passed the threshold)
Case 3: Without event 51, With event 49 -> highlight (it passed the threshold)
Case 4: Without event 49, With event 48 -> do NOT highlight (it was already low and variation less then 15%)
Case 5: Without event 49, With event 35 ->  do highlight (it was already low but a variation greater then 15%)

Critical Customers Affected

Number of critical customers with zero pressure or low pressure during the simulated event. The information about critical customers need to be previously provided by the user and filled in the configuration template used to import customers information, in the digital twin administration.

In case you observe some inconsistencies regarding affected customers identification, please take a look at this article - Inconsistent Results for Affected Customers.

Valves to close

Valves to be closed are automatically calculated and represent the nearest valves that will isolate the smallest portion of the network. Checking or unchecking a valve in the right side table (or by directly clicking with the right button of the cursor above the valve and select "Toogle Operable") will trigger a new re-compute and suggest other valves (the nearest ones) to be closed. This is useful as sometimes the nearest valves may be inoperable due to failure or other reasons. In case the user pretends specifically to define the valves or pipes that should be closed, please consider instead running a valves operation event.

Simulate

Opens a dialog to run the steady state or extended period simulation with the some user defined settings. 

Isolation type of run

If the user does not press the simulation button, all the results displayed are just considering the isolation of the pipe, and all customers affected are identified only based on geospatial and pipe connectivity analysis. This means that affected customers will be those that end up without any supply. In that case, above the simulate button, it will be displayed Isolation as simulation type.

Steady state run

Besides the geospatial and pipe connectivity analysis, the hydraulic model engine will also run in order to identify customers located nearby that although still have supply, may experience a significant decrease in pressure. Steady state means that the period analyzed corresponds only to the exact instant when pipe was closed, that is defined by the user. In that case, above the simulate button, it will be displayed Steady state as simulation type.

Extended period run

Besides the geospatial and pipe connectivity analysis, the hydraulic model engine will also run in order to identify customers located nearby that although still have supply, may experience a significant decrease in pressure. Extended period means that the period analyzed comprises a specific duration (and not an instant) defined by the user. In that case, above the simulate button, it will be displayed Extended Period as simulation type. There are two types of extend period runs:

Extended period run dialog

Leakage flow: pipe break flow in the units defined for the digital twin.

Leakage start time: the start of the leakage.

Isolate: by default off, allows to specify details when and how long isolation occurs within in simulation time range.

Calculation Start date: the start date for the model run

Calculation End date: the end date for the model run

 

Affected List of Customers

Summary of all affected customers (Billing ID and address). Click in the Full Screen button to have a complete view (in a tabular format) of all customers affected, with more detailed information

Click in the download CSV button to export the list of all Affected Customers to a CSV file. 

 

See also

Inconsistent Results for Affected Customers

OpenFlows WaterSight TechNotes and FAQ's

WaterSight Learning Resources Guide