---
title: "Special Emphasis Components - Summary"
slug: "special-emphasis-components"
tags: ["RBI", "PEI"]
status: "update"
updated: 2026-10-27T23:11:45Z
published: 2026-10-27T23:11:45Z
canonical: "ims-handbook.cenosco.com/special-emphasis-components"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ims-handbook.cenosco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Special Emphasis Components - Summary

There are some specific cases where the [S-RBI assessment approach](/v414/docs/work-process-degradation-management-implementation-steps), in IMS PEI, changes, depending on the Equipment/Component type or the [Degradation Mechanism](/v414/docs/guidance-per-degradation-mechanism-implementation-and-interpretation). This section gives guidance for the specific Equipment/Component type cases – the Special Emphasis Components. In another section you can find DM specific guidance in the [Degradation Modules](/v414/docs/degradation-modules-1).

The table below highlights the Equipment/Component types for which specific modelling is implemented in IMS PEI.

Specific modelling for the Special Emphasis Components – summary:

| RBI Methodology | Equipment Type | Component Type | Degradation Mechanism / *Analysis Types* | DM characteristics | IF Table | Max Inspection Interval (MII) | Inspection Strategy (IS) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Main | [Bundle](/v414/docs/heat-exchanger-bundles-shell-and-tube) | * | * | Age-Related | Full Life | RL*IF | - |
| Main | M_XCH_COIL | * | * | Age-Related | Full Life | RL*IF | - |
| Main | Pipe/ Piping System | [Pipe UG (underground)](/v414/docs/underground-piping) | Soil Corrosion | Age-Related | Full Life | RL*IF | - |
| Main | Pipe/ Piping System | [](/v414/docs/corrosive-deadlegs)[Corrosive Deadleg (unstable)](/v414/docs/corrosive-deadlegs) | *DL Analysis* | - | - | Unstable DL table | Unstable DL table |
| Main | Pipe/ Piping System | [Corrosive Mixing Point / Injection Point](/v414/docs/corrosive-injection-and-mixing-points) | *MP/IP Analysis* | - | - | MP/IP table | MP/IP table |
| Main | Pipe/ Piping System | [](/v414/docs/thermal-fatigue-at-mixing-and-injection-points)[Thermal Injection and Mixing Points](/v414/docs/thermal-injection-and-mixing-points) | Thermal MP/IP (Thermal Fatigue) | Non-Age-Related | - | Thermal MP/IP table | Thermal MP/IP table |
| Main | Pipe/ Piping System | [Small Bore](/v414/docs/small-bore-connections) | Vibration Fatigue | Strategy Based | - | NAR table | Mitigation |
| Main | Pipe/ Piping System | [Dissimilar Weld](/v414/docs/dissimilar-welds) | * | Age-Related | Half Life | RL*IF | - |
| Main | Pipe/ Piping System | [Dissimilar Weld](/v414/docs/dissimilar-welds) | * | Non-Age-Related | - | Applicable DM table | Applicable DM table |
| [**Tank**](/v414/docs/tanks) | **Tank** | ***** | *** (when mapped) / Tank DMs** | **Age-Related** | **Full Life** | **RL*IF** **Load Cases** | **-** |
| [**Tank**](/v414/docs/tanks) | **Tank** | ***** | *** (when mapped) / Tank DMs** | **Non-Age-Related** | **-** | **Applicable DM table** | **Applicable DM table** |
| [**PRV**](/v414/docs/pressure-relief-devices-rvrdvb) | **RV** | ***** | ***Demand Scenarios*** | **-** | **-** | **PRV table** | **-** |

Notes:

* Always applicable unless overwritten by another specific case.

- Not Applicable.