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Substantial cost reduction on gas terminal environmental improvement project

Upgrade of Dimlington Terminal to comply with new EU and UK environmental legislation, therefore extending the life of the asset. Costain’s solution substantially reduced the capital cost and delivery programme while increasing the energy efficiency of the gas processing terminal.

  • Service 1

Perenco UK

  • Service 1

Consultancy & advisory
Asset optimisation
Complex programme delivery

  • Service 1

2013 - 2015

Key Benefits


reduction in capital cost requirements offered by Costain solution


with environmental legislation

Enhanced flexibility

of operation, supporting ability to process future offshore gas reserves

No plant shutdowns

during construction due to the project phasing approach used


of project value spent with local supply chain

The Dimlington gas processing terminal, acquired by Perenco in 2012, uses refrigeration units to chill gas during processing to ensure the sales gas product meets the required specification for the national gas transmission system. The units used a refrigerant which was being phased out due to the Montreal Protocol on Substances that Deplete the Ozone Layer.

Costain was chosen to work closely with the client to execute the re-appraisal (pre-FEED) study. Our preferred option met all the technical criteria as well as providing a robust, fit-for-purpose business solution aligned to client’s strategy to extend the asset life, improve operating efficiency and optimise capital expenditure.

This is an example of how customers benefit from collaborative engagement with our front end specialists in the early stages of a project; the capital cost of our solution was 60% less than an alternative proposal.


Delivery to schedule and budget

Following our initial proposal and concept, Costain continued working with Perenco on further project definition through delivering a FEED study. This was followed by the award of the Engineering, Procurement and Construction Management contract (EPCM), which was delivered on schedule and to budget; with Environment Agency compliance achieved in December 2014, and project completion in December 2015.

In December 2015, the project was recognised by the prestigious IChemE Global Awards, winning the coveted Industry Project Award.

Costain’s capabilities and positive approach to working closely with Perenco have resulted in a substantial reduction in scope and cost for the project compared to that produced by the previous asset owners. The novel bespoke solution has been a testament to the strengths of both companies’ knowledge and expertise and a desire to produce enhanced environmental and business results.

Perenco UK Project & Developments Manager

Contact and social


Laura Hughes, Sector Director - Energy
01628 842444
[email protected]