RBI 581 Workflow

RBI 581 forms part of the Degradation Management workflow.

Degradation Management IMS tool Workflow

Before you can start the RBI 581 Analysis you need to set up your hierarchy and define your Corrosion Loop - this is exactly the same as required for doing an S-RBI Analysis as well. After the RBI 581 Analysis you continue with the same process as described in the S-RBI degradation management workflow. For more information on this see:

1. Step 1 Define the Asset (and set up the Hierarchy)

2. Step 2 Identify Threats and Barriers (Define the CL)

3. Next you to the RBI 581 Analysis - see the steps here below

4. Step 13 Barrier Verification - Execute, Analyze, Document

5. Step 14 Maintain Barriers

6. Lastly you need to review your RBI Analysis and IOWs, similar to Step 15 Review S-RBI Analysis and IOW

RBI 581 IMS tool workflow

• Step 3: Set up once per site, plant unit: Management Systems Factor (FMS), Risk calculation method (Risk Matrix / ISO Risk Plot), Criticality Target(s).

• Step 4: Start the Analysis by assigning the DMs to the Component

• Step 5 & 6: Calculate the Probability of Failure by entering the inspection history (past inspections and their effectiveness) and component data: thickness, corrosion rate, stresses, design data.

• Step 7: Calculate the Consequence of Failure by entering Fluid Detail, Financial, Mitigation and Specifications, Inventory Group Mass, No. Of Toxic Components.

• Step 8: Set the Legal or Local Inspection Interval on the Risk tab per analysis and click Calculate in the Results Pane. IMS plots the Risk = PoF x CoF on the Risk Matrix / ISO Risk Plot and iterates the Age until the Criticality Target is exceeded. Review the risk tables and plots.

• Step 9 & 10: Review the results (Maximum Inspection Interval and Next Inspection Date) on the On the Result Pane and Approve.

• Step 11: Select the Next Inspection Effectiveness and a Task.

• Step 12: Implement the results by assigning the work scope to a Schedule.