The Phebus experiment FPT1

The Fission Product Test FPT1 was conducted in the PHEBUS facility of the French (IPSN) at the Research Centre of CADARACHE, on July 26th, 1996. The test was the second in a series of six in pile tests in an internationally sponsored program involving IPSN, Electricite de France (EDF), European Commission, Japanese Nuclear Power Engineering Corporation (NUPEC) and Japan Atomic Energy Research Institute (JAERI), US Nuclear Regulatory Commission (NRC), Canadian Candu Owners Group (COG), Korean Atomic Research Institute (KAERI), the Swiss Bundesamt fur Energiewirtschaft, Hauptabteilung fur die Sicherheit der Kernanlagen (HSK), and Paul Scherrer Institut (PSI). The objective of the FPT1 test was to study the phenomenology of low pressure severe accident sequences for which the Fission Products (FPs) flow path involves the primary side of the steam generator and the reactor containment building. FPT1 was performed using irradiated fuel (mean burn up 23.4 GWd/MtU). The objectives of the test may be stated separately for the bundle, circuit and containment. (J.P.N.)