Pipelines – Getting Started & Next Steps

Advantages of Cathodic Method of Pipeline Protection against Corrosion

The leading course of pipeline failures is corrosion. Over a long period, pipelines which are dipped in water are corroded. You can protect metallic surfaces from corroding in the most effective way by applying for cathodic protection. Protection against corrosion is a key factor to remember during the construction of a pipeline system that is to be submerged. Corrosion depends on environmental factors. Pipelines that are buried under the surface of the earth are usually expensive investments. Coatings and coverings are other substitutes used in corrosion prevention. They only serve as primary protection nonetheless. The advantages of using the cathodic method to protect metallic pipelines form corrosion will be explored in this article.

For pipelines of large volume, which are submerged in water or buried under the surfaces of the earth, cathodic protection is the most economical and practical method to prevent corrosion. Painting and galvanizing, which are other corrosion prevention methods are only reliable for pipelines of small dimension and that pass on the ground. This is owing to the fact that their maintenance is simple.

Because of the reduced maintenance costs, cathodic protection is proving to be more cost effective. It is also because it does not require a large plate thickness for safety factors when operating at high pressures. The comparison between cathodic protection and the others on an economic perspective favors cathodic protection because it is less expensive to install and maintain. Cathodic protection is beneficial on a technical scale since its effectiveness can be measured. Furthermore, it is built on the fundamental laws of nature.

In a wet and corrosive environment, cathodic protection is a more significant substitute to use of concrete reinforced pipelines. Covering the pipes with concrete is only effective when the pipes are applied in soils that are less corrosive and dry. Due to the effects of expansion and vibrations, concrete pipelines are less reliable because they could crack or have improper bonds. In cathodic protection you can adjust the potential difference of the output. In case the coating of the pipeline spoils over a certain period, the output voltage can be adjusted to the desired degree to maintain effective protection. Furthermore, when cathodic protection is applied, it is possible to check if the structure is sufficiently protected or not.

In conclusion, cathodic protection can be used together with a coating. In locations of the pipeline where the is a poor-quality coating, cathodic prevention may be used Also, cathodic protection can be applied in places where the coating is less than the norms prescribed as well as on bare pipes. There is an offer of optimum efficiency and safety guaranteed by using cathodic protection. This is for the reason that you can operate pipelines even in worse conditions.

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