Studsvik achieves regulatory milestone with the US Nuclear Regulatory Commission (“NRC”), on the acceptance to review the Studsvik Scandpower Topical Report (“TR”) Supplement for applicability to existing and future nuclear energy customers. This key achievement solidifies Studsvik’ s position in the industry as a global leader through its state-of-the-art software codes by supporting customers’ regulatory filings as the industry now pursues longer cycles, further power uprates, and longer operational lives.

The NRC has accepted Studsvik Scandpower’s licensed TR Supplement on the validity and applicability of Studsvik Core Management System 5 (CMS5) neutronics simulation software for use in Small Modular Reactors (“SMRs”), and extension to new enrichment and burnup capabilities being proposed for the industry. This action is expected to conclude in 2026 and will enable the industry to undergo both fuel efficiency initiatives and the new construction of SMRs in the United States.
“This confirms Studsvik Scandpower’s position in the industry as a leader in nuclear fuel software for today’s existing power plants and tomorrow’s future reactor designs”, says W. A. “Art” Wharton III, Business Area President of Studsvik Scandpower.

Studsvik Scandpower TR “SSP-14-P01/028-TR Supplement 1, Generic Application of the Studsvik Scandpower Topical Report: Supplement for Extended Enrichment, Burnup, and SMRs,” was officially accepted for review by the US NRC on March 21, 2025. The NRC staff determined that it provides sufficient information to conduct a detailed technical review. Specifically, this demonstrates the application and data range for U-235 enrichment up to and including 10 wt%, maximum rod-average burnup, up to and including 80 GWd/MTU, and provides clarification and confirmation on applicability to light water pressurized SMRs.

Studsvik Scandpower received approval on the original TR in 2017 for use in traditional PWR operations.

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