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How sacrificial anodes work 
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A sacrificial anode (galvanic anode) is a piece of metal that protects 
steel structures from corrosion underwater by dissolving ("sacrifi- 
cing") itself. However, this results in the release of components 
from the sacrificial anode into the marine environment. Different 
amounts are released depending on the foundation type and its 
coating, as well as the environmental conditions. 
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