In Risk Based Inspection, you can divide equipment into the components whose risk you want to analyze using an RBI Analysis. You can divide a piece of equipment into components based on shared degradation mechanisms. Each sub-part of the asset that shares the same degradation mechanisms will belong to the same RBI Component.
Consider a Heat Exchanger, which is a piece of equipment that contains the following components:
Each of the components can contain items such as Nozzles, Flanges, or Piping.
In RBI, to analyze the ways in which the exchanger can fail, you would need to divide the components into logical groups that represent common failure characteristics. Each group of components would be a separate RBI Component and would be represented by a single Criticality Calculator RBI Components record. Keep in mind that some of these groups are involved in the overhead system, and others are involved in the cooling water system.
For example, you might group the equipment's components into the following RBI Components:
If you were to create an RBI Analysis using this example, your database would contain the following records:
Note: If you had already created Functional Location records to represent the OVHD System and Cooling Water System using the recommended asset hierarchy, you would need to create additional Corrosion Loop records to represent these same systems. The existing Functional Location records would not need to be linked to the Corrosion Loop records.
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