Calculation of SACP for Vessel

[rexomen]

To all members in this forum, if anyone has ever done the calculations to determine the number of anodes (sacrificial anode cathodic protection) required on the vessel? if any, might be able to share these calculations. thank you

[ahmadlie]

is the vessel got internal coating? what size?

[rexomen]

No internal coatings,
Lenght 6.096 m
Diameter 1.2 m
Design life 5 years
Water resistivity 100 Ohm-cm
Mean operating temperature 50 C
Coating breakdown 10%
Current density @ambient 80 mA/m2
Current density @50 C 105 mA/m2
Protected potential -0.8 Volt/Ag-AgCl

How many anode required for this vessel?? thank you

[ahmadlie]

your design life?

[gilvanf]

Thanks!