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

CONTENTS
2.B.1 OVERVIEW ........................................................................................................................................ 1
2.B.1.1 Determination of Corrosion Rate ........................................................................................... 1
2.B.1.2 Determination of Thinning Type ............................................................................................ 1
2.B.1.3 Tables........................................................................................................................................ 2
2.B.2 HYDROCHLORIC ACID CORROSION ............................................................................................. 4
2.B.2.1 Description of Damage............................................................................................................ 4
2.B.2.2 Basic Data ................................................................................................................................ 4
2.B.2.3 Determination of Corrosion Rate ........................................................................................... 4
2.B.2.4 References ............................................................................................................................... 4
2.B.2.6 Figures ...................................................................................................................................... 10
2.B.3 HIGH TEMPERATURE SULFIDIC AND NAPHTHENIC ACID CORROSION ................................. 11
2.B.3.1 Description of Damage............................................................................................................ 11
2.B.3.2 Basic Data ................................................................................................................................ 12
2.B.3.3 Determination of Corrosion Rate ........................................................................................... 12
2.B.3.4 References ............................................................................................................................... 12
2.B.3.6 Figures ...................................................................................................................................... 32
2.B.4 HIGH TEMPERATURE H2S/H2 CORROSION ................................................................................. 33
2.B.4.1 Description of Damage............................................................................................................ 33
2.B.4.2 Basic Data ................................................................................................................................ 33
2.B.4.3 Determination of Corrosion Rate ........................................................................................... 33
2.B.4.4 References ............................................................................................................................... 33
2.B.4.5 Tables........................................................................................................................................ 34
2.B.4.6 Figures ...................................................................................................................................... 43
2.B.5 SULFURIC ACID CORROSION ........................................................................................................ 43
2.B.5.1 Description of Damage............................................................................................................ 43
2.B.5.2 Basic Data ................................................................................................................................ 44
2.B.5.3 Determination of Corrosion Rate ........................................................................................... 44
2.B.5.4 References ............................................................................................................................... 44
2.B.5.5 Tables........................................................................................................................................ 44
2.B.5.6 Figures ...................................................................................................................................... 54
2.B.6 HYDROFLUORIC ACID CORROSION ............................................................................................. 55
2.B.6.1 Description of Damage............................................................................................................ 55
2.B.6.2 Basic Data ................................................................................................................................ 55
2.B.6.3 Determination of Corrosion Rate ........................................................................................... 55
2.B.6.4 References ............................................................................................................................... 56
2.B.6.5 Tables........................................................................................................................................ 56
2.B.6.6 Figures ...................................................................................................................................... 58
2.B.7 ALKALINE SOUR WATER CORROSION ........................................................................................ 58
2.B.7.1 Description of Damage............................................................................................................ 58
2.B.7.2 Basic Data ................................................................................................................................ 58
2.B.7.3 Determination of Corrosion Rate ........................................................................................... 58
2.B.7.4 References ............................................................................................................................... 59
2.B.7.5 Tables........................................................................................................................................ 59
2.B.7.6 Figures ...................................................................................................................................... 60