Simulation of the OECD/NEA Sandia Fuel Project Phases I & II ignition tests with DRACCAR

Abstract

An OECD/NEA PWR spent fuel pool experimental program is simulated with the code DRACCAR v2.3.  New code modelings have been developed for radiative heat transfers in the bundle and for zirconium nitrides production.  Air induced flow rates have been correctly reproduced in both storage patterns with the additional hypothesis of oxides swelling.  Fuel clad temperature response for a recently discharged assembly in a uniform pattern is well assessed.  Thermal response for bundles in a 14 pattern still depending on additional hypotheses not fully checked.