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  • The first PHEBUS fission product experiment FPT0 : General aspects of the experimental sequence : Results concerning the fuel bundle degradation and FP release

Abstract

The aim of the PHEBUS fission products programme is to study the behaviour products released in the reactor circuit during a severe accident. This paper concerns the bundle aspect and the preliminary results of the core material releases. The analysis of the thermal results, the gamma-scanning, the radiography and the numerous tomographies performed in PHEBUS lead to the following bundle degradation sequence: (i) rupture of the zircaloy at around 1000 K; (ii) rupture of the AgInCd control between 1400 and 1500 K; (iii) the escalation of the stream-zircaloy reaction; (iv) large bundle degradation; (v) a final event corresponding to a down motion of this molten pool.

Additional information

Authors: REPETTO G, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);VON DER HARDT P, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GONNIER C, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);HAESSLER M, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: International Topical Conference on the Safety of Operating Reactors
Availability: Available from (1) as Paper EN 39263 ORA
Record Number: 199511356 / Last updated on: 1995-10-31
Category: PUBLICATION
Original language: en
Available languages: en