Members Collaborate to Deliver Critical Test Racks for Sizewell B

A successful collaboration between two Suffolk-based companies has resulted in the delivery of a vital test facility for EDF’s Sizewell B nuclear power station. Electronic Terminations Limited (ETL) and Minima Design have worked together to design, build, and commission a set of three test racks to ensure the reliability of power supplies used in critical equipment at the station.

Framlingham-based Minima Design was responsible for designing robust 19-inch enclosures, while ETL led the assembly and testing of the electrical systems. The racks incorporate a variable AC power supply, allowing EDF to test power units that output 5V, 12V, and 15V DC. To simulate real-world operating conditions, large power resistors were integrated to apply realistic loads, with a cooling system ensuring stable operation during testing.

A key advantage of this collaboration was the close working relationship between EDF and ETL, facilitated by their geographical proximity. The EDF project team was able to visit ETL’s facilities regularly, ensuring that usability, approval, and testing were carried out efficiently. This hands-on approach allowed EDF to provide direct feedback throughout the development process, resulting in a highly practical and user-friendly test facility that meets their operational needs.

“This project highlights the strength of local engineering expertise,” said Jonathan Paul, Director at ETL. “By working closely with EDF and Minima Design, we’ve developed a user-friendly and highly effective test facility that enhances the reliability of Sizewell B’s critical power supplies.”

From defining specifications to commissioning the final systems, the entire process was a testament to the ability of Suffolk-based businesses to deliver complex engineering solutions for the nuclear sector. Full documentation and user guides were provided to EDF, ensuring seamless operation and long-term usability.

Jason Reeve, at EDF, commented: “Working closely with ETL has been invaluable in developing a test facility that meets our specific requirements. Their ability to tailor solutions and adapt to our feedback has ensured that the final product is both practical and highly effective for our operational needs. This project is a great example of how local businesses can contribute to national infrastructure with innovative engineering.”

“At ETL, we actively seek opportunities to work with other local businesses, as we believe in strengthening the regional engineering and manufacturing sector,” said Barrie Hayter, Sales Director at ETL. “This project is a great example of that, with Minima Design handling the design and another Suffolk-based company providing the metalwork fabrication. By collaborating with skilled partners in our area, we can deliver high-quality, specialised solutions that benefit both our clients and the local economy.”

“We are proud to have collaborated with ETL to deliver a solution that supports national infrastructure,” added Andrew McCulloch from Minima Design. “This project is a great example of how local businesses can work together.”

James Williamson, from NAAME (New Anglia Advanced Manufacturing and Engineering), highlighted the importance of fostering local collaboration: “East Anglia has an incredible wealth of engineering expertise, and projects like this demonstrate the value of utilising local talent. By uniting, businesses in the region can drive innovation, create highly technical solutions, and strengthen the local supply chain. We need to exploit this potential more and encourage greater collaboration between firms to ensure the region continues to be a leader in advanced manufacturing.”

The partnership between ETL and Minima Design underscores the vital role of local expertise in supporting national energy security. As EDF continues to invest in the safety and efficiency of Sizewell B, the success of this project demonstrates the value of engaging regional engineering talent for mission-critical applications.

Supporting Local Expertise in Engineering and Innovation

In May, ETL will be hosting a Space East event focused on designing for space applications. This initiative highlights ETL’s commitment to working with local businesses and showcasing the wealth of engineering expertise based in Suffolk. By bringing together regional firms and industry professionals, ETL aims to foster innovation and collaboration in space-related technology, further cementing Suffolk’s reputation as a hub for advanced engineering solutions.

For more information, please contact barrie.hayter@electronic-terminations.com