Piping CML Optimization: Optimizing the Definition

摘要

"Condition monitoring location (CML) optimization" is a term we frequently hear, particularly for piping circuits. Everyone wants their circuits to be "CML optimized," but what does this truly mean? Borrowing a term from API RP 581, Risk-based Inspection Methodology, the broad definition of CML optimization as it relates to internal thinning is easy: we wish to establish the minimum CML coverage to correctly identify the true damage stated Note that the true damage state is related to remaining life in traditional, time, or condition-based inspection programs. Although we sometimes focus on having sufficient CML coverage to correctly define the corrosion environment, corrosion rates are only part of the picture. Projected wall thickness is the ultimate goal when it comes to inspection, repair, and replacement planning.