WA Branch - Behind the Numbers: Why Damage Mechanism Reviews Are the Backbone of Risk-Based Inspection

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Behind the Numbers: Why Damage Mechanism Reviews Are the Backbone of Risk-Based Inspection

By Mike Dehghan, MechInteg

Abstract

Risk-Based Inspection (RBI) is often regarded as a data-driven strategy for optimizing inspection resources, but what lies beneath the numbers is just as critical. A well-structured Damage Mechanism Review (DMR) provides the technical backbone that ensures RBI outputs are not just risk models, but meaningful decision-making tools. This presentation unpacks the critical role of Damage Mechanism Reviews (DMRs) in producing meaningful and defensible RBI outputs. It will highlight how incomplete or generic assessments of degradation modes can undermine entire risk models, and why metallurgical accuracy is the key to safe and cost-effective inspection planning. Practical examples will be provided to demonstrate how DMRs transform RBI from a theoretical model into a high-confidence integrity strategy.

About the Presenter:

Mike Dehghan is the Operations Director of Mechanical Integrity Engineering Services (MechInteg), where he leads technical delivery and consulting engagements focused on RBI implementation, damage mechanism review, and compliance auditing. His work bridges the gap between metallurgical insight and operational decision-making.

Mike is a Chartered Professional Engineer (CPEng) and a Registered Professional Engineer in both Queensland (RPEQ) and Victoria (PE). He holds multiple API certifications and is passionate about translating complex technical standards into practical integrity solutions that protect both assets and people.

Mike is an experienced Asset Integrity and Inspection Engineer specializing in RBI, damage mechanism analysis, and pressure equipment integrity. With approximately two decades of hands-on experience across Oil & Gas, petrochemical, and refining industries, he has led RBI implementation programs aligned with API 580/581, developed inspection strategies grounded in metallurgical insight, and trained engineering teams on fitness-for-service and corrosion assessment.