Studsvik Secures U.S. NRC Approval Supporting Next-Generation Nuclear Reactor Development

Nyköping, June 8, 2026 - Studsvik has received regulatory approval from the U.S. Nuclear Regulatory Commission (U.S. NRC) for Supplement 1 to the Studsvik Scandpower CMS5 Generic Pressurized Water Reactor (PWR) Topical Report, extending its applicability to both existing and next-generation nuclear reactors. This is an extension of the existing U.S. NRC approval of the Generic PWR Topical Report and further expands Studsvik’s role in the nuclear industry as a trusted and approved service provider enabling the industry with advanced tools and solutions for the future.

This significant milestone reinforces Studsvik’s position as a global leader in advanced nuclear software solutions, enabling the company to better support customers with plant life extension initiatives while also assisting reactor designers in the licensing and development of next-generation technologies, including Small Modular Reactors (SMRs) and Advanced Modular Reactors (AMRs).

The approval expands the capability of Studsvik’s CMS5 software, enabling its use for plants transitioning to higher fuel enrichment levels (up to 8 weight percent) and supporting increased fuel burnup (up to 80 GWd/MTU (Gigawatt-days per Metric Ton of Uranium)) to facilitate longer operating cycles. It also confirms the software’s approval for use in light water reactor-based SMR designs. 

“Studsvik Scandpower’s commitment to serving as a global, independent provider of nuclear software and physics solutions positions us to bring advanced neutronics and reactor physics capabilities to the forefront of the industry,” said W. A. Art Wharton III, Business Area President of Studsvik Scandpower and President of Studsvik Americas. “This approval enables us to support not only today’s operating fleet but also emerging reactor developers as they pursue regulatory licensing and innovation in next-generation nuclear technologies.”

Please visit the NRC ADAMS website for the approved publication at accession number ML26131A418.

The order is not expected to have a financial impact of such materiality that it significantly affects Studsvik Group's results during 2026.

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About Studsvik
Studsvik offers a range of advanced technical services to the global nuclear power industry. Studsvik’s business focus areas are fuel and materials technology, reactor analysis software, decontamination and radiation protection as well as technical platforms for handling, conditioning and volume reduction of radioactive waste. The company has more than 75 years’ experience of nuclear technology and radiological services. Studsvik has approx. 540 employees in 6 countries and the company’s shares are listed on Nasdaq Stockholm.

www.studsvik.com  
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