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

9.4 Required Data .............................................................................................................................. 61
9.5 Basic Assumptions ..................................................................................................................... 61
9.6 Determination of the DF .............................................................................................................. 61
9.6.1 Overview ............................................................................................................................... 61
9.6.2 Inspection Effectiveness ..................................................................................................... 61
9.6.3 Adjustment for On-line Monitoring .................................................................................... 61
9.6.4 Calculation of the DF ........................................................................................................... 61
9.7 Nomenclature ............................................................................................................................... 62
9.8 References ................................................................................................................................... 62
9.9 Tables............................................................................................................................................ 63
9.10 Figures .......................................................................................................................................... 65
10 SCC DF—ALKALINE CARBONATE STRESS CORROSION CRACKING (ACSCC)........................ 65
10.1 Scope ............................................................................................................................................ 65
10.2 Description of Damage................................................................................................................ 65
10.3 Screening Criteria ........................................................................................................................ 66
10.4 Required Data .............................................................................................................................. 66
10.5 Basic Assumptions ..................................................................................................................... 67
10.6 Determination of the DF .............................................................................................................. 67
10.6.1 Overview ............................................................................................................................... 67
10.6.2 Inspection Effectiveness ..................................................................................................... 67
10.6.3 Calculation of the DF ........................................................................................................... 67
10.7 Nomenclature ............................................................................................................................... 68
10.8 References ................................................................................................................................... 68
10.9 Tables............................................................................................................................................ 68
10.10 Figures .......................................................................................................................................... 70
11 SCC DF—POLYTHIONIC ACID STRESS CORROSION CRACKING (PASCC) ................................ 70
11.1 Scope ............................................................................................................................................ 70
11.2 Description of Damage................................................................................................................ 70
11.3 Screening Criteria ........................................................................................................................ 71
11.4 Required Data .............................................................................................................................. 71
11.5 Basic Assumptions ..................................................................................................................... 71
11.6 Determination of the DF .............................................................................................................. 71
11.6.1 Overview ............................................................................................................................... 71
11.6.2 Inspection Effectiveness ..................................................................................................... 71
11.6.3 Calculation of the DF ........................................................................................................... 71
11.7 Nomenclature ............................................................................................................................... 72
11.8 References ................................................................................................................................... 72
11.9 Tables............................................................................................................................................ 73
11.10 Figures .......................................................................................................................................... 75
12 SCC DF—CHLORIDE STRESS CORROSION CRACKING (CLSCC) ............................................... 76
12.1 Scope ............................................................................................................................................ 76
12.2 Description of Damage................................................................................................................ 76
12.3 Screening Criteria ........................................................................................................................ 77
12.4 Required Data .............................................................................................................................. 77
12.5 Basic Assumptions ..................................................................................................................... 77
12.6 Determination of the DF .............................................................................................................. 77
12.6.1 Overview ............................................................................................................................... 77
12.6.2 Inspection Effectiveness ..................................................................................................... 77
12.6.3 Calculation of the DF ........................................................................................................... 78