CDS Joins Forces with Costain to Deliver Freon Works on Behalf of Perenco

CDS, the Hull-based brownfield services specialist, is currently undertaking a major project to provide mechanical engineering services at Perenco’s Dimlington gas terminal in East Yorkshire.

Working on one of the most critical pieces of gas infrastructure serving the North Sea offshore fields, CDS is responsible for fabricating new mechanical components off-site at the company’s state-of-the-art facility and then installing them on-site to support Perenco’s multi-million pound upgrade of the natural gas refrigeration system.

CDS is required to execute the modification works on a live natural gas processing plant working around ongoing operations crucial to both the import of gas from three major pipelines in the North Sea and through to exporting via the UK’s gas transmission network.

CDS’ 50-strong team has been working on the project since April 2014, with its contracted works set to be completed in December 2015.

It is providing new fabrications, installation, testing and rigorous commissioning which will enable the plant to meet new environmental legislation relating to the refrigeration and storage of gas. CDS’s expanding team of industry experts is based on-site, using in-house resource to execute the full delivery of the project in four main phases.

During the first phase, CDS installed a number of temperature control valves and associated systems and instruments. During phases two and three, CDS is required to install a methanol distillation and storage unit, and supplementary chilling package. The final phase involves the installation of a newly fabricated Silica Gel Adsorber Vessel and associated equipment.

Phil Batty, business director at CDS, said: “We are delighted to be carrying out these essential works on behalf of Perenco. The first phase was completed successfully and we are now working towards completion on phases two and three.

“Our expertise in this field has enabled us to deliver the necessary works while the plant remained operational, with safety as a key driver.

“Through close collaboration with Perenco and its on-site team, we have ensured there has been no delay on delivery as well as ensuring the highest standards of both individual and process safety.

“We are looking forward to moving the project forward over the coming months with a goal of completing works by December.”

CDS has and will continue to provide a range of services to support the four main phases including pre-planning, project management, associated piping and supports, specialist welding and safety reviews.

CDS is based at a large, state-of-the-art facility in Yorkshire and prides itself on engaging local suppliers. The company has a successful track record of providing innovative engineering solutions, consistently meeting international standards, the Dimlington project is further reinforcement of CDS’ expertise in delivering complex, brownfield oil and gas projects

Perenco’s Dimlington Freon Replacement Project is a legislative environmental project in compliance with EU and UK laws. To meet the specification as set by the National Transmission System the terminal’s refrigeration units currently use Freon R-22. However, to meet the Montreal Protocol introduced through the EU Ozone Depleting Substances Directive, a phased removal of all HCFCs, including R-22, was introduced, to be in place by January 1, 2015.

To meet these legislative requirements, Perenco chose a hybrid J-T solution, reusing existing equipment and providing the appropriate level of flexibility and back-up required. The J-T portion of the project was completed on time by January 1, 2015.

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