Cathodic Protection

Cathodic protection is another means of controlling corrosion of the submerged portion of steel in waterfront structures. Two types of cathodic protection systems are used for marine structures. They are: (1) the sacrificial anode system, and (2) the impressed current system. Both systems require periodic inspection and maintenance.

The sacrificial anode system can be retrofitted into the waterfront structures using procedures within the scope of this manual. Planning and estimating data are provided in Table 5-12. The selection, installation location, and connection method for the anodes needs to be designed by an experienced corrosion engineer for each specific application.

Installation of impressed current cathodic protection systems is beyond the scope of this manual. For a detailed discussion of cathodic protection systems refer to Section 5.11.

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