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The Design and Operation of a Multi-System Approach for Cathodic Protection Systems of Inter-Bonded Complex Plants

Picture for The Design and Operation of a Multi-System Approach for Cathodic Protection Systems of Inter-Bonded Complex Plants
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The use of a multi-system approach to cathodic protection is primarily driven by the increasing complexity of the types of structures, which are part of the common cathode in modern plants.


Traditionally cathodic protection systems and their designs were based on single cathode structures like cross country pipelines or individual tanks. As the technology matured CP was applied to a wider range of structures but usually the design philosophies adopted remained unchanged.

Product Number: 51323-19264-SG
Author: Dr Kevin Kendell
Publication Date: 2023
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In order to remove the issues of stray current corrosion and to accommodate the requirements for earthing between structures many clients are adopting an inter-bonded approach to complex plants. In this approach all structures are made into an equi-potential belt such that conventional soil-based remote CP systems do not cause harm. The issues of design of multiple cathodic protection system types to address the various structures such as piles, pile-caps, pits, buildings, intakes, ponds, pipework, etc. are elaborated. In addition, the ability to accurately monitor and control such complex systems in a manner that allows true data to be determined without interference is demonstrated.

In order to remove the issues of stray current corrosion and to accommodate the requirements for earthing between structures many clients are adopting an inter-bonded approach to complex plants. In this approach all structures are made into an equi-potential belt such that conventional soil-based remote CP systems do not cause harm. The issues of design of multiple cathodic protection system types to address the various structures such as piles, pile-caps, pits, buildings, intakes, ponds, pipework, etc. are elaborated. In addition, the ability to accurately monitor and control such complex systems in a manner that allows true data to be determined without interference is demonstrated.

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