Issuing body
API
Latest edition
3rd Edition (2016, A1 2019, A2 2020)
Region
USA, Global
Equipment items
2
Scope
Quantitative RBI calculation methodology — POF, COF, risk ranking, inspection planning.
Key requirements (7)
- Quantitative RBI methodology — damage factor approach.
- Damage factor (DF) by mechanism: thinning, SCC, HTHA, brittle fracture, fatigue, etc.
- Generic failure frequency (gff) baseline: typically 4×10⁻⁵/yr leak frequency.
- Adjusted POF = gff × DF × FMS (management systems factor).
- COF: area-based (ft²) for flammable, dispersion modeling for toxic.
- Inspection effectiveness: A (highly effective) to E (no effectiveness) — degrades DF.
- Re-inspection date driven by acceptable risk threshold (often 5×10⁻⁴/yr).
Related standards (2)
Applied to 2 equipment items
Inspection & Process Safety