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Corrosion Control

Last updated: March 15, 2018

What Does Corrosion Control Mean?

Corrosion control refers to measures that are implemented in various fields to control corrosion in:

  • Soil
  • Metal
  • Concrete
  • Water
  • Sand
  • Masonry

This consists of different corrosion monitoring and control techniques that can be used by industries to solve corrosion problems according to their requirements. With such measures in place, the harmful effects and negative consequences of corrosion can be avoided.

Pipeline corrosion control is specifically the process and scientific method of limiting pipeline corrosion. Several different corrosion control methods are used as part of an overall pipeline corrosion control plan. Generally, all pipeline owners and operators have a pipeline corrosion control plan.

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Corrosionpedia Explains Corrosion Control

Corrosion can lead to countless environmental issues. For example, ships, tankers and pipelines are often subject to the dangerous effects of corrosion. Corroded water systems can contaminate drinking water. These serve as threats to the environment and mankind, so effective corrosion control methods should be implemented to prevent the damaging effects of corrosion.

Methods of Corrosion Control

Corrosion can be controlled in several ways:

  • Cathodic protection (CP) - This technology uses direct current to counteract corrosion in structures such as gas pipelines and storage tanks. This helps prevent the onset of corrosion and even stop it from worsening.

  • Linings and coatings - These serve as the main tools for fighting corrosion. They are usually applied in combination with CP to achieve the highest level and most cost-effective corrosion protection. Coating repair and additional coatings may also be applied as part of a corrosion control plan.

  • Corrosion inhibitors - These are substances that, when placed in a certain environment, reduce the corrosion rate of that environment for certain materials such as metal. These can extend the lifespan of equipment and prevent failures and system shutdowns. Corrosion inhibitors can also prevent heat transfer loss and contamination, and preserve the aesthetic appearance of the structures.

  • Selection of materials - This refers to choosing materials that are corrosion resistant, such as special alloys, plastic and stainless steel.

Pipeline Corrosion Control

Corrosion control is an incredibly important practice anyone in the industry, including for pipeline owners and operators. The lack of a pipeline corrosion control plan can result in devastating pipeline failures with dangers to the environment and humans. Many governing agencies and industry groups require pipeline owners and operators to have a well-documented pipeline corrosion control plan to mitigate these risks.

In addition to the methods listed above, pigging, or the internal cleaning of the pipeline, and periodic inspections are also used to control pipeline corrosion. All of these methods must be documented in the pipeline corrosion control plan.

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