FPT4 is the third test in the PHEBUS program of integral experiments aimed at the study of the release, transport and deposition of fission products in a severe reactor accident. The purpose of the performed ICARE2 calculations is to support a realistic scenario concerning the debris bed thermal behaviour and molten pool formation. The comparison experiment calculation shows a good agreement up to 2200 K. At higher temperature is necessary to assume a steam by-pass through the thermal shroud to reproduce the measured temperatures. With this hypothesis, also the final molten pool configuration is well calculated.
PHEBUS FPT4. First Post Test Calculation on the Debris Bed Using the ICARE2 V3 Code
Ederli, S.
2000-03-20
Abstract
FPT4 is the third test in the PHEBUS program of integral experiments aimed at the study of the release, transport and deposition of fission products in a severe reactor accident. The purpose of the performed ICARE2 calculations is to support a realistic scenario concerning the debris bed thermal behaviour and molten pool formation. The comparison experiment calculation shows a good agreement up to 2200 K. At higher temperature is necessary to assume a steam by-pass through the thermal shroud to reproduce the measured temperatures. With this hypothesis, also the final molten pool configuration is well calculated.File in questo prodotto:
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