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The aim of the Phebus-FP programme is to investigate in an in-pile test facility providing sufficient prototypical conditions the principal phenomena governing the transport, deposition and retention of fission products in LWR severe accident conditions. A series of six tests is planned. In each test a bundle of 20 fuel rods plus control rod will be heated neutronically in a steam and hydrogen flow, and the released fission product vapours and aerosols will be transported through a circuit particular to the test into a vessel simulating the containment of a large dry PWR. This paper presents the objectives of the first Phebus-FP test, which uses trace-irradiated rods and has a circuit containing a simulated steam generator. It then describes how the operating conditions and, to some extent, the objectives of the test have been clarified by a series of pretest calculations using different codes and executed by various organisations.

Additional information

Authors: JONES A V, JRC Ispra (IT);SHEPHERD I M, JRC Ispra (IT);MAILLIAT A, DERS/SEMAR, CEA, Saint-Paul-lez-Durance (FR);DROSIK I, DERS/SEMAR, CEA, Saint-Paul-lez-Durance (FR);DUMAZ P, DERS/SEMAR, CEA, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: American Nuclear Society Internal Topical Meeting - Safety of Thermal Reactors, Portland, Oregon (US), July 2-25, 1991
Availability: Available from (1) as Paper EN 36238 ORA
Record Number: 199111344 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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