Phebus Fission Product Project: Presentation of the by W. Krischer, M.C. Rubinstein

By W. Krischer, M.C. Rubinstein

Lawsuits of the Seminar of the Phebus-FP [Fission Product] venture, held on the Chateau Cadarache, St Paul-Lez-Durance, France, 5-7 June 1991.

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Extra info for Phebus Fission Product Project: Presentation of the experimental programme and test facility (Publication No. Eur 13520 En of the Commission of the Europe)

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During late-phase melt progression in unrecovered accidents and in very severe recovered accidents such as TMI-2, a ceramic melt pool forms in the mostly ceramic debris bed with further core heatup. Thus the metallic and the ceramic debris with melting points that differ by 600K or more become separated in space, and, as the TMI-2 core examination show, they behave quite differently in continued melt progression. ” BWR core geometry tests in ACRR (DF-4) and CORA have shown that eutectic interactions of the control-blade B4C powder and their stainless steel sheaths at about 1500 K liquify the blade materials(4).

For accident management, analysis was performed by using RELAP/SCDAP for intentional depressurization procedure with or without pump seal break in collaboration with USNRC. Participation in the international standard problem exercise organized by the Committee of Safety of Nuclear Installations (CSNI) of OECD has become one of the important activities for the code assessment such as the TMI-2, CORA, BETA and PHEBUS experiments. 34 THE PHEBUS FISSION PRODUCT PROJECT 3. CONCLUDING REMARKS It should be taken deep in mind that the future of nuclear power generation does depend largely whether it can be safe enough or not.

10 and the test conditions are given in Table 2. In the experiment, helium gas is used for the safety of the test and items for investigation include the effects of forced convection driven by injection of steam and helium into the containment, the effects of heat sink by the vessel wall and compartment wall. Table 2. PWR MIxing and Distribution Test Conditions Concentration of He Concentration of Steam Water Spray No. 0 29 MPa Fig. 10. Hydrogen Mixing and Distribution Test Facility Fig. 11. Helium Concentration Distribution Example of the test result is shown in Fig.

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