Analyses of the Phébus FPT3 Experiment Using the Severe Accident Codes ATHLET-CD, ICARE/CATHARE, and MELCOR

Simulation of the PHEBUS FPT-1 experiment using MELCOR and exploration of the primary core degradation mechanism

“…In 2007 the PHEBUS experiment was also mentioned by Buck (2007) in his modeling of late-stage core degradation in light water reactors. Meanwhile, a preliminary analysis of the PHEBUS FPT3 experiment using severe accident codes was done by Repetto (Repetto et al, 2007). A significant analysis of PHEBUS-FP results for plant safety applications was performed in Switzerland (Birchely and Guntay, 2013).…”

Review on Core Degradation and Material Migration Research in Light-Water Reactors

“…Analysis of thermal-hydraulics of leaks and transients with core degradation is developed by Gasellschaft fur Anlagen und Reaktorsicherheit (GRS) in cooperation with IKE in Germany (Trambauer and Austregesilo, 2003;Austregesilo et al, 2007;Hollands et al, 2007;Repetto et al, 2007). The ATHLET code can be used to predict a spectrum of beyond design-basis accidents for BWRs and PWRs, but without core degradation.…”

SARNET benchmark on Phébus FPT3 integral experiment on core degradation and fission product behaviour

“…The need for further code developments of the early phase of core degradation is recognized for the absorber rod material behaviour (Repetto et al, 2010). Therefore extensive programmes of separate-effect experiments have been performed, such as ISTP/BECARRE at Cadarache by IRSN (Clément and Zeyen, 2005;Dominguez and Drouan, 2014) under the International Source Term project and BOX, LAVA and QUENCH-SR at the Karlsruhe Institute of Technology (KIT), (Steinbrück et al, 2004) to enable a better understanding of B4C oxidation and interactions with cladding materials.…”