API 581 : 2016

RISK-BASED INSPECTION METHODOLOGY

American Petroleum Institute

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PART 1 - INSPECTION PLANNING METHODOLOGY
1 SCOPE
2 REFERENCES
3 DEFINITIONS AND ACRONYMS
4 BASIC CONCEPTS
5 PRESSURE VESSELS AND PIPING
6 ATMOSPHERIC STORAGE TANKS
7 PRESSURE RELIEF DEVICES
8 HEAT EXCHANGER TUBE BUNDLES
PART 2 - PROBABILITY OF FAILURE METHODOLOGY
1 SCOPE
2 REFERENCES
3 PROBABILITY OF FAILURE METHODOLOGY
4 THINNING DAMAGE FACTOR
5 COMPONENT LINING DAMAGE FACTOR
6 SCC DAMAGE FACTOR - CAUSTIC CRACKING
7 SCC DAMAGE FACTOR - AMINE CRACKING
8 SCC DAMAGE FACTOR - SULFIDE STRESS CRACKING
9 SCC DAMAGE FACTOR - HIC/SOHIC-H[2]S
10 SCC DAMAGE FACTOR ALKALINE CARBONATE STRESS
   CORROSION CRACKING
11 SCC DAMAGE FACTOR - POLYTHIONIC ACID STRESS
   CORROSION CRACKING
12 SCC DAMAGE FACTOR - CHLORIDE STRESS CORROSION CRACKING
13 SCC DAMAGE FACTOR - HYDROGEN STRESS CRACKING-HF
14 SCC DAMAGE FACTOR - HIC/SOHIC-HF
15 EXTERNAL CORROSION DAMAGE FACTOR - FERRITIC COMPONENT
16 CORROSION UNDER INSULATION DAMAGE FACTOR - FERRITIC
   COMPONENT
17 EXTERNAL CHLORIDE STRESS CORROSION CRACKING DAMAGE
   FACTOR - AUSTENITIC COMPONENT
18 EXTERNAL CHLORIDE STRESS CORROSION CRACKING UNDER
   INSULATION DAMAGE FACTOR - AUSTENITIC COMPONENT
19 HIGH TEMPERAURE HYDROGEN ATTACK DAMAGE FACTOR
20 BRITTLE FRACTURE DAMAGE FACTOR
21 LOW ALLOY STEEL EMBRITTLEMENT DAMAGE FACTOR
22 885 DEGREES F EMBRITTLEMENT DAMAGE FACTOR
23 SIGMA PHASE EMBRITTLEMENT DAMAGE FACTOR
24 PIPING MECHANICAL FATIGUE DAMAGE FACTOR
PART 2 - ANNEX A
PART 2 - ANNEX B
PART 2 - ANNEX C
PART 3 - CONSEQUENCE OF FAILURE METHODOLOGY
1 SCOPE
2 REFERENCES
3 GENERAL
4 CONSEQUENCE OF FAILURE - LEVEL 1
5 CONSEQUENCE OF FAILURE - LEVEL 2
6 CONSEQUENCE OF FAILURE - ATMOSPHERIC STORAGE
   TANKS
PART 3 - ANNEX A

Abstract

Gives quantitative procedures to establish an inspection program using risk-based methods for pressurized fixed equipment including pressure vessel, piping, tankage, pressure relief devices (PRDs), and heat exchanger tube bundles.