Guides to risk-based inspection and asset integrity
Each guide starts with a short answer. Then it explains the method, with a worked example where one helps. Check each method against the current code before you use it for a decision.
What is risk-based inspection (RBI)?
Risk-based inspection (RBI) plans inspections by the probability and the consequence of failure, not by a fixed calendar. How RBI works, and how API 580 and API 581 fit in.
API 580 vs API 581: what is the difference?
API 580 sets the principles of a risk-based inspection program. API 581 gives the quantitative methods for the probability and the consequence of failure. When you use each one.
How to calculate remaining life from thickness readings
Remaining life is the wall thickness above the minimum required thickness, divided by the corrosion rate. A worked example with short-term and long-term rates and the code limits.
What is a condition monitoring location (CML)?
A CML is a fixed point on an asset where an inspector measures the wall thickness over time. Where to place CMLs, and what data each CML needs.
RBI software compared: what four vendors publish
What four vendors of RBI software state about API 580/581, price and trial on their own pages, checked on 12 Oct 2026.
Reliability engineering glossary
149 terms, each with a definition, context and the applicable standards.