The Flush Sequence Manager is used to specify sequencing and view sequence results within a flush zone. Press from the UDF toolbar to open the flush sequence manager.

The critical junctions tab summarizes up to ten junctions which have the most pressure deviation from the specified minimum pressure during the corresponding flush sequence.  Junctions will only appear on this list when they are included in the flush area definition. Information is displayed for the currently highlighted sequence.  

Toolbar

New - Creates a new flush zone sequence.

Insert Sequence - Inserts a new sequence in the list and renumbers all subsequent sequences in the list.

Delete - Deletes the currently highlighted sequence and renumbers all subsequent sequences in the list.

Save - Saves the currently highlighted record.

Isolate Target Pipes - Click on this button to automatically populate the Valves to Operate table.  There are three constraints that must be obeyed to use this tool. A warning will be issued if any of these 3 constraints, listed below, are violated:

    1. There is only one flow path among the pipes defined for flushing (i.e., pipes in the current flush sequence must be in series without branches)

    2. The sequence is continuous (i.e., all pipes in the current flush sequence are connected)

    3. The sequence starts from a clean water source (i.e., a tank, reservoir, or previously flushed sequence.)

Zoom to Active Sequence - Zoom to the currently selected sequence.

Status - Summarizes the status of the simulation:

Green - No warnings or errors.  The simulation was successful.

Yellow - Warning message was generated.  Warning messages are generated when the simulation results are found to exceed one or more characteristics defined by the flush zone or there was an error with the hydraulic simulation. If a warning message is generated, one of the following occurred:

        • A hydraulic warning was detected by the simulation engine.

        • The pressure of any junction in current flush zone falls below the required minimum pressure.

        • The flushing hydrant’s residual pressure is below the required minimum residual pressure.

        • The velocity of any flush pipe falls below the required minimum flush velocity.

        • Total flush length exceeds the specified (non-zero) maximum flush length.

        • Flush volume is greater than the specified (non-zero) maximum flush volume.

        • Flush time is less than the computed minimum flushing time.

Grey - The simulation has not been run or was unsuccessful.

Note - Warnings do not affect the results of flush sequences. They simply inform the user that the simulation results do not meet the specified characteristics.

Run - Click to run a simulation of the currently highlighted sequence. Simulations may only be performed within the Flush Sequence Manager.

Batch Run - Click to run a simulation for a group of continuous sequences in the current flush zone. Simulations may only be performed within the Flush Sequence Manager.

Export to Excel - Export the following information for all sequences in the current flush zone into Microsoft Excel:

    • Sequence ID

    • Description of the sequence operations:

      • Pipes flushed during the current sequence

      • ID's of valves and hydrants operated for the current sequence

    • Parameters Data - Model and Field Results

This tool is only found in the Flush Sequence Manager.

OK - Select OK to save any change and close the dialog box.

Cancel - Select Cancel to close the dialog box without saving any changes.

Sequences

Sequence - Lists all sequences within the current flush zone

Description - Description for each sequence within the current flush zone. The description is always "Sequence" + ID and cannot be modified.

Critical Junctions Tab

Critical Junction IDs - ID's are listed for each junction (up to 10 junctions) which have the most pressure deviation from the specified Minimum System Pressure defined by the flush zone during the corresponding flush sequence.  Junctions will only appear on this list when they are included in the flush area definition .

Description - Text entered here will be printed on every page in the lower left area.