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

2.B-92 API RECOMMENDED PRACTICE 581
Table 2.B.11.7—Cooling Water Corrosion Estimated Corrosion Rate for Carbon and Low Alloy Steels
in Seawater as a Function of Flow Velocity
Flow Velocity (ft/s)
Corrosion Rate (mpy)
0 5.2
1 8.7
2 11.9
3 14.9
4 17.5
5 19.9
6 22.1
7 24.1
8 25.9
9 27.5
10 29.0
11 30.4
12 31.6
13 32.7
14 33.8
15 34.7
16 35.6
17 36.4
18 37.2
19 38.0