API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

12.7 Nomenclature ................................................................................................................................ 78
12.8 References .................................................................................................................................... 78
12.9 Tables ............................................................................................................................................ 79
12.10 Figures ........................................................................................................................................... 83
13 SCC DF—HYDROGEN STRESS CRACKING IN HYDROFLUORIC ACID (HSC-HF) ........................ 83
13.1 Scope ............................................................................................................................................. 83
13.2 Description of Damage ................................................................................................................ 83
13.3 Screening Criteria ......................................................................................................................... 84
13.4 Required Data ............................................................................................................................... 84
13.5 Basic Assumptions ...................................................................................................................... 84
13.6 Determination of the DF ............................................................................................................... 84
13.6.1 Overview ................................................................................................................................ 84
13.6.2 Inspection Effectiveness ..................................................................................................... 84
13.6.3 Calculation of the DF ............................................................................................................ 85
13.7 Nomenclature ................................................................................................................................ 85
13.8 References .................................................................................................................................... 85
13.9 Tables ............................................................................................................................................ 86
13.10 Figures ........................................................................................................................................... 87
14 SCC DF—HYDROGEN-INDUCED CRACKING AND STRESS-ORIENTED HYDROGEN-INDUCED
CRACKING IN HYDROFLUORIC ACID SERVICES (HIC/SOHIC-HF) ........................................................ 88
14.1 Scope ............................................................................................................................................. 88
14.2 Description of Damage ................................................................................................................ 88
14.3 Screening Criteria ......................................................................................................................... 88
14.4 Required Data ............................................................................................................................... 88
14.5 Basic Assumptions ...................................................................................................................... 88
14.6 Determination of the DF ............................................................................................................... 89
14.6.1 Overview ................................................................................................................................ 89
14.6.2 Inspection Effectiveness ..................................................................................................... 89
14.6.3 Adjustment for On-line Monitoring ..................................................................................... 89
14.6.4 Calculation of the DF ............................................................................................................ 89
14.7 Nomenclature ................................................................................................................................ 90
14.8 References .................................................................................................................................... 90
14.9 Tables ............................................................................................................................................ 91
14.10 Figures ........................................................................................................................................... 93
15 EXTERNAL CORROSION DF—FERRITIC COMPONENT .................................................................. 94
15.1 Scope ............................................................................................................................................. 94
15.2 Description of Damage ................................................................................................................ 94
15.3 Screening Criteria ......................................................................................................................... 94
15.4 Required Data ............................................................................................................................... 94
15.5 Basic Assumption ........................................................................................................................ 94
15.6 Determination of the DF ............................................................................................................... 95
15.6.1 Overview ................................................................................................................................ 95
15.6.2 Drivers ................................................................................................................................... 95
15.6.3 Inspection Effectiveness ..................................................................................................... 95
15.6.4 Calculation of the DF ............................................................................................................ 95
15.7 Nomenclature ................................................................................................................................ 99
15.8 Tables ............................................................................................................................................ 102
15.9 Figures ........................................................................................................................................... 104