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Cathodic protection measurement buried pipeline

Buried steel pipeline protection

Application of the most expensive coating system for your pipeline does not stop corrosion attacks. The answer is found in a 200 years old technique.

CATHODIC PROTECTION

An old technique - still the most effective way to prevent corrosion.

Cathodic protection application can be traced back to 1824, when Sir Humphry Davy succeeded in protecting copper sheathing from corrosion by the use of iron anodes. Buried steel pipelines have been cathodically protected since the 1940´s.

Considerable advances in cathodic protection technology has been made since the early start, including anode material development, more accurate measuring equipment and advanced control units with remote operation possibilities.

Establishing a correctly designed impressed current cathodic protection system can perfectly protect a buried steel pipeline. Different anode system could be installed, depending on the environment.

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Pipeline site surveys

Remotely installed anodes

Specially designed high silicon iron anodes buried in-ground, in groups, distantly from the pipeline. Number of anodes in each group depends on the current requirement and soil resistivity. Distance between pipeline and anode beds de-pending on soil resistivity in the area and length of the pipeline to be protected.

Continuous anode(s)

Continuous anode parallel to pipeline
Continuous anode parallel to pipeline

Cable-like anode installed in the same trench, and parallel to the pipeline for the entire pipeline length.

With an advanced control unit with remote monitoring possibilities, the corrosion can be stopped, and the cathod-ic protection can be fully controlled.

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