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Corrosion Consultation

Cathodic protection - AMA

Cathodic protection (CP) is a highly effective method to prevent corrosion on metal structures exposed to aggressive environments, such as pipelines, tanks, and marine infrastructure. By incorporating cathodic protection into your project and referencing AMA standards, you ensure compliance, durability, and optimal performance for critical assets. Whether designing a new installation or upgrading an existing one, CP provides a reliable and cost-effective way to extend the lifespan of metallic structures.

What is Cathodic Protection and Which Methods Are Prescribed in AMA?

Cathodic Protection with Sacrificial Anodes

Cathodic protection with sacrificial anodes is an effective and cost-efficient method to prevent corrosion on metal surfaces in environments where corrosion is a concern.

Cathodic Protection with Impressed Current

Cathodic protection with impressed current, also known as impressed current cathodic protection (ICCP), is a technique used to prevent metal corrosion, including reinforcement in concrete, by utilizing an external power source to create an electrochemical reaction that counteracts the corrosion process.

Kanister anode

Guidelines and benefits

Pipelines

  • Extended lifespan of pipelines.
  • Reduced risk of leaks and damage.
  • Cost savings by preventing the need to replace corroded pipelines.
  • Usability across most soil and water conditions.
Would you like to read more about cathodic protection for pipelines?

In AMA section DEM.111, you can read more about this.

Reinforced concrete

  • Cathodic protection can effectively prevent or slow down the corrosion process, thereby extending the lifespan of concrete structures.
  • By reducing the risk of corrosion, the need for expensive repairs and maintenance is minimized.
  • Cathodic protection is a crucial component for preserving the integrity of the concrete and ensuring that the reinforcement retains its corrosion resistance, which in turn reduces the risk of mechanical damage and structural failure.
  • It is an environmentally friendly method since it reduces the need to replace or repair damaged concrete structures, minimizing waste and resource usage.

Standards

  • Cathodic protection of steel in concrete (ISO 12696:2022)
  • Cathodic protection must be carried out according to SS-EN ISO 12696, SS-EN 50162, and the Swedish Electrical Safety Agency’s high-voltage regulations.
  • Cathodic protection for pipelines: SS-EN ISO 15589-2:2014, SS-EN ISO 15589-1:2017, SS-EN 20162, SS-EN 15112:2022.

Related pages

Sacrifical Anodes

Sacrificial anodes are crucial in cathodic protection systems, as they actively corrode in place of the structure being protected. Made from metals like zinc, aluminum, or magnesium, these anodes provide protection and effectively halting the corrosion process.
Read more

Galvanic Protection

Cathodic protection combats galvanic corrosion by neutralizing the potential difference between dissimilar metals. By using sacrificial anodes or impressed currents, the system prevents the less noble metal from corroding in environments where galvanic coupling occurs.
Read more

ICCP

ICCP systems use an external power source to supply a continuous protective current to the structure. Unlike sacrificial anodes, ICCP systems offer precise control over the protection levels, making them ideal for larger or more complex structures like pipelines and marine vessels.
Read more

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We are one of Scandinavia's leading suppliers of cathodic protection since 1989. Our headquarters are located in Ramlösa, Helsingborg, in southern Sweden.

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