Chemsafe - Asset Integrity & Process Safety

Defined at the Process Flow Diagram (PFD) level, a Corrosion Loop also known as Corrosion Circuit is typically shown in a document as part of a corrosion materials diagram (CMD) or as part of a damage mechanisms review (DMR) diagram.
The loop represents the common process, corrosion environment, and materials of construction, and includes all equipment within that loop susceptible to the same corrosion/damage mechanisms and at approximately the same rates of deterioration.
Well defined corrosion loops / circuit is a useful tool for providing an integrity management team with a simplified processes of grouping equipment and piping for efficient method of developing barriers and mitigations to ensure safe operations in accordance with the design intent.