Evaluation of missing pellet surface geometry on cladding stress distribution and magnitude
N Capps, R Montgomery, D Sunderland, M Pytel… - … Engineering and Design, 2016 - Elsevier
Missing pellet surface (MPS) defects are local geometric defects in nuclear fuel pellets that
result from pellet mishandling or manufacturing. The presence of MPS defects can cause
significant clad stress concentrations that can lead to through-wall cladding failure for certain
combinations of fuel burnup, and reactor power level or power change. Consequently, the
impact of MPS defects has limited the rate of power increase, or ramp rate, in both
pressurized and boiling water reactors (PWRs and BWRs, respectively). Improved three …
result from pellet mishandling or manufacturing. The presence of MPS defects can cause
significant clad stress concentrations that can lead to through-wall cladding failure for certain
combinations of fuel burnup, and reactor power level or power change. Consequently, the
impact of MPS defects has limited the rate of power increase, or ramp rate, in both
pressurized and boiling water reactors (PWRs and BWRs, respectively). Improved three …
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