Issuing body
API
Latest edition
3rd Edition (2016)
Region
USA, Global
Equipment items
2
Scope
Recommended practice for RBI program development.
Key requirements (8)
- Risk-Based Inspection (RBI) framework — qualitative, semi-quantitative, quantitative.
- Risk = POF (probability of failure) × COF (consequence of failure).
- POF drivers: damage mechanism, corrosion rate, inspection effectiveness.
- COF drivers: flammable inventory, toxic release area, business interruption.
- Risk matrix typical: 5×5, with 'high' risk items getting tightest inspection intervals.
- Inspection interval typically capped at one-half remaining life by API 510/570/653.
- Re-evaluate RBI: every 5 years OR after significant change.
- Companion API 581 provides quantitative methodology and damage factor tables.
Related standards (1)
Applied to 2 equipment items
Inspection & Process Safety