US expands permit for Studsvik reactor analysis system for light-water reactors

The expanded approval includes use at higher fuel enrichment, according to Studsvik.

"It can contribute to longer operating cycles and better fuel utilization in both existing and new reactors," the company writes.

"The decision means that Studsvik's CMS5 system can be used in more types of light water reactors - both in today's nuclear power plants and in the development of next-generation reactors, including small modular reactors, SMRs," the company adds.

Studsvik's share has lost almost 12 percent of its value since the turn of the year, but is up 91.5 percent compared to June 2025.