About Degradation Mechanisms (DMs)

The following table provides a list of DMs that can be linked to each component type. This list is not comprehensive.

When you associate degradation mechanisms with a Corrosion Loop, you have two options:

• You can link only the DMs that are common across all underlying RBI Components. If you choose this option, you will need to link additional degradation mechanisms with each RBI Component as needed.

  -or-

• You can associate all possible DMs for all underlying RBI Components, even if those DMs apply only to one or a few of the components. If you choose this option, you will need to unlink DMs from each component as needed.

When you calculate an RBI Criticality Analysis, the unmitigated risk and unmitigated financial risk for each DM is calculated automatically and stored in the related RBI Degradation Mechanisms record. If you have created a custom calculator, unmitigated risk will be calculated by your custom calculator and displayed on the following datasheets:

• Risk Matrix
• Degradation Mechanism with Risk Mitigation
• Degradation Mechanism without Risk Mitigation

After the unmitigated risk and unmitigated financial risk are calculated for the DMs, depending on how the administrative settings are configured, you can:

• Accept the calculated unmitigated values.

  -or-

• Override the calculated unmitigated values.