Engineering & Construction Solutions

Engineering, construction, energy and asset protection for industrial, infrastructure and commercial projects. Design through to maintenance, on assets that have to keep working.

Specialised service

Cathodic Protection Solutions

Corrosion is the failure mode that arrives slowly and then all at once. Cathodic protection holds it off, extending the working life of pipelines, tanks and other buried or submerged metal.

We work across the full lifecycle: site assessment, engineering design, material selection, installation, testing, commissioning, monitoring and maintenance. Most of the value sits in the last three, which is where systems are usually neglected.

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System types

Two ways to protect a structure

Which one suits depends on the structure, the coating, the soil and whether power is realistically available on site.

Impressed current (ICCP)

An external power supply drives the protective current. Suits large structures, poor or ageing coatings, and high resistivity soil where a sacrificial system could not deliver enough current.

Sacrificial / galvanic

A more reactive metal corrodes in place of the structure, with no power supply and less to go wrong. Suits smaller, well-coated or isolated assets, and sites with no practical power.

Our cathodic protection activities

Seven services, across the whole lifecycle

Each one can be taken on its own or as part of a full scope from survey through to monitoring.

Cathodic Protection System Design

Choosing the right system for the structure, the soil and the budget, then documenting it well enough to build from.

Pre-Design & Site Survey

Establishing what is actually in the ground before anyone designs anything.

Installation of CP Systems

Installing and supervising systems, including the civil and electrical work that comes with them.

CP Materials & Equipment Supply

Supplying the components a system needs, specified against the design rather than what happens to be in stock.

Testing, Commissioning & Monitoring

Proving the system reaches protection criteria, then checking it stays there.

Over-the-Line Surveys

Walking the route to find coating defects, interference and areas the system is not reaching.

AC Interference Mitigation

Managing the induced AC that appears where pipelines share a corridor with power infrastructure.

Typical applications

Protecting critical assets and infrastructure

The approach is adapted to the structure, the environment and how the asset is operated.

Pipelines
Storage tanks
Buried metallic structures
Submerged structures
Offshore and marine structures
Structural piles
Industrial facilities
Reinforced concrete

Engineering & Construction

Built around complete project delivery

Alongside cathodic protection, the division covers the broader engineering, energy, construction and maintenance work projects need.

Solar Energy Systems

System engineering, installation and the electrical integration that connects it to everything else.

General Construction

Execution and coordination of commercial, industrial and infrastructure construction works.

Civil Works

Site preparation, structural work and the supporting civils that projects are built on.

Electrical Works

Installation, distribution and integration, from containment through to energisation.

Mechanical & MEP Works

Mechanical, electrical and plumbing coordination, and the implementation that follows it.

Maintenance & Engineering Services

Inspection, maintenance, rehabilitation and technical support once an asset is in service.

Energy

Construction

Maintenance

Frequently asked

Cathodic protection, briefly explained

What is cathodic protection?: An electrochemical method of stopping corrosion on buried or submerged metal. A more reactive metal is connected to the structure and corrodes in its place, so the structure becomes the cathode in the cell and stops losing metal. The anode is cheap and replaceable; the pipeline or tank is not.
What types are there?: Two. Sacrificial, also called galvanic, where a more reactive anode drives the current on its own. And impressed current, where an external power supply drives it. Sacrificial suits smaller or well-coated structures with no power available. Impressed current suits large structures, poor coatings or high resistivity soil.
How does it differ from galvanising?: Galvanising is zinc applied at the factory and is not replaceable. When it is consumed, protection ends and the steel starts corroding. Cathodic protection is installed in the field, works on any buried or submerged metallic structure, and its anodes are replaced when spent.
Why is it necessary?: For most oil and gas pipelines and storage tanks it is a legal requirement, not an option. Beyond compliance, corrosion failures on buried assets are expensive, disruptive and occasionally dangerous, and they are preventable at a fraction of the cost of the failure.
What does it actually save?: Lower maintenance, longer asset life, and fewer unplanned failures. Replacing infrastructure less often is also the more sustainable outcome, which increasingly matters to operators reporting on it.
Can it be retrofitted to an existing structure?: Usually yes. Retrofitting is routine on tanks and pipelines already in service, though the survey stage matters more because you are working with existing condition and existing interference rather than a clean site.

Have a structure that needs protecting?

Send the location, the structure type and any survey work already done. We will tell you what assessment is needed before anything can be designed.

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