This Section of the Handbook provides some guidance for specific Degradation Mechanisms used in IMS.
For more comprehensive Degradation Mechanism documentation, see: Degradation Modules.
To view guidance related to Special Emphasis Components, see: Guidance per Special Emphasis for Degradation Management with S-RBI.
There are some specific cases where the S-RBI assessment approach, in IMS PEI, changes, depending on the Equipment/Component type or the Degradation Mechanism.
For some Degradation Mechanisms, specific modelling is implemented in IMS. A summary of the specific modelling parameters for some of those DMs is highlighted in the table below:
RBI Methodology | Equipment Type | Component Type | Degradation Mechanism (DM) | DM characteristics | IF Table | Max Inspection Interval (MII) | Inspection Strategy (IS) |
|---|---|---|---|---|---|---|---|
Main | * | * | * | Age-Related | Half Life | RL*IF | - |
Main | * | * | Age-Related | Half Life | RL user entered, RL*IF | - | |
Main | * | * | * | Non-Age-Related | - | - | NAR table |
Main | * | * | Non-Age-Related | - | HTHA table | - | |
Main | * | * | Non-Age-Related | - | Slow Acting SCC table | SCC NAR table | |
Main | * | * | Non-Age-Related | - | Moderate Acting SCC table | SCC NAR table | |
Main | * | * | Non-Age-Related | - | Fast Acting SCC table | SCC Fast NAR table | |
Main | * | * | Non-Corrosive | Non-Age-Related | - | RL*0.8 | Review only |
Main | * | * | Strategy Based | IF=1 | RL*1 | CUI CS table | |
Main | * | * | Strategy Based | - | Based on slow Acting SCC table | CUI SS table |
Notes:
* Always applicable unless overwritten by another specific case.
- Not Applicable.