JF Subtech support Uniper’s Connah’s Quay power station in underwater and confined space engineering. We regularly assist the power station maintain underwater systems such as cooling water supply pipework and settling ponds.

Client: Uniper

Project completed: Ongoing framework since 2019

Project scope: Subsurface engineering, diving and ROV


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The challenge

  • Operating in a complex environment at a working gas power station
  • Working in confined spaces: cooling water supply pipework, pump sumps and culverts
  • Poor underwater visibility restricts diver’s ability and therefore rely upon touch

The solution

  • Experienced diving project managers, supervisors and divers are key to working within industrial plants
  • Close liaison with power station staff and a good understanding of Uniper’s working practices mean than we have a seamless capability to react quickly to new projects and provide advice
James Fisher is a global supplier of trusted engineering services across the industries we serve, with an unrivalled ability to develop innovative solutions that meet the constantly developing needs of our customers operating in challenging environments.

The results and benefits

  • The past 12 months have seen us provide a range of underwater maintenance services to the floating head, internal expanding rubber seal systems and general desilting to ensure the plant continues to operate efficiently
  • Our confined space works included inspection and repairs with a four-man team to ensure the continued safe operating of the plant
James Fisher Subtech
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