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Sacrificial Anode - Service Life

Service life of a sacrificial anode (Al-In or Zn) from mass, capacity, and protection current demand - bare-anode lifetime before replacement.

AnodeSacrificialCathodic
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Formula, assumptions, and limits

t=mCuIt = \frac{m \cdot C \cdot u}{I}
SymbolMeaningUnit
mmAnode masskg
CCAnode capacityAh/kg
uuUtilisation factor

Source: DNV-RP-B401

In short

Service life of a sacrificial anode (Al-In or Zn) from mass, capacity, and protection current demand - bare-anode lifetime before replacement.

Learn the theory Marine Cathodic Protection and Hull Coatings