PL Scenario Assessment - MAOP, Strategy, Confidence Rating

Take Note

This overview will guide you through adjusting the MAOP, Strategy, and Confidence Rating in the Scenario Assessment module of IMS PLSS. By making those changes you will be able to observe their impact on Integrity Assessment results.

The lower right panel of the Scenario Assessment module consists of the MAOP and Confidence Rating sections. By adjusting the values in these two sections you can observe how Derating the Pressure in your Pipeline, and changing the Strategy or Confidence rating of your Assessment could impact the Remnant Life of the Pipeline and/or the Next Inspection Date. The effects of the modifications are displayed in the Scenario Sensitivity section of the upper right pane.

Derating the MAOP

The MAOP can be derated (as a percentage). To adjust the pressure of the Pipeline:

• In the Derated Pressure field, enter the final pressure percentage to which you want to reduce the MAOP.

• In the Scenario Toolbar, click Save and Run.

Clicking the Save and Run button will:

1. Update the Results in the Scenario Sensitivity Section.

2. Update the Repair Chart.

3. Highlight the MAOP item in red in the Flow Chart.

Changing the Strategy

To change the Strategy:

• From the Strategy drop-down menu, select the applicable option.

• In the Scenario Toolbar, click Save and Run.

Changing the Strategy will change the Flow Chart type displayed in the left lower panel.

Note: A change in the Strategy only affects the Next Inspection Date and does not impact the Remnant Life.

Change the Confidence Rating

To change the Consequence Rating:

• Click the Edit button.

• Select or deselect applicable checkboxes.

• Click Save.

• In the Scenario Toolbar, click Save and Run.

Note: A change in the Confidence rating only affects the Next Inspection Date and does not impact the Remnant Life.