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Radiation Shielding and Criticality Safety

ORNL provides advanced capabilities in radiation transport for criticality safety and shielding analysis, especially through hybrid methodologies that implement deterministic solvers to optimize high-fidelity Monte Carlo calculations for systems that are too challenging to be addressed by conventional means. ORNL has expertise in application scenarios that require these unique tools for high-fidelity analysis, such as:

  • Shielding analysis of used nuclear fuel transportation and storage packages
  • Pressure vessel fluence calculations
  • Criticality accident alarm system analysis throughout a process facility

These analyses are supported with the use of multigroup and continuous-energy SCALE Monte Carlo transport codes (KENO, MAVRIC, and Shift) as well as the use of MCNP® alone or with variance reduction through ADVANTG.