FRM II actively pushes the international efforts to reduce the use of HEU in civil nuclear operations. For the conversion to LEU, changes of the core geometry are needed. In this work, a reassessment of the neutronic, thermal-hydraulic and mechanic behavior of the current and a potential LEU (high density UMo) core for FRM II is performed in a coupled manner, with thermal-hydraulic and mechanic solvers exchanging data in a step basis. With these results, all necessary tools to assess the core thermal-hydraulic and mechanic stability under nominal and incident conditions are available.
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FRM II actively pushes the international efforts to reduce the use of HEU in civil nuclear operations. For the conversion to LEU, changes of the core geometry are needed. In this work, a reassessment of the neutronic, thermal-hydraulic and mechanic behavior of the current and a potential LEU (high density UMo) core for FRM II is performed in a coupled manner, with thermal-hydraulic and mechanic solvers exchanging data in a step basis. With these results, all necessary tools to assess the core th...
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