Abstract
The CABRI E7 experiment was performed to study fuel pin failure and post-failure phenomena for an industrial pin with annular fuel pellet design and pin rupture with subsequent fuel ejection into liquid sodium. E7 used a structured Transient OverPower (TOP) starting at nominal cooling conditions leading to mechanical pin failure due to cavity pressure build-up at still constrained clad conditions. In this work we have studied the failure mechanisms and failure conditions serving as boundary conditions for the post-failure material-relocation behavior. We have also evaluated SAS-SFR code's capabilities to simulate post-failure phenomena in view of experimental results. We present comparisons of measured results with SAS-SFR results for the power operation irradiation of the fuel pin as well as for the E7 failure and post-failure behavior.
