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Abstract

Experiments and analyses are described to investigate the breakup behaviour of jets of high density melts in water. In the frame work of reactor safety, this subject concerns the possible interactions of molten core material with the coolant during a severe reactor accident. In the FARO-LWR test programme at the Safety Technology Institute of the JRC Ispra a series of tests is planned in which up to 150 kg of molten UO(2)-ZrO(2)-Zr fuel will be poured as jets into a water column under ambient pressure conditions up to 5 MPa. The expected interactions are being calculated in advance, using coarse mixing models which are under development in nuclear research centres and/or institutes for nuclear engineering. As a first step, laboratory and analytical studies are being performed on the isothermal system involving molten Wood's metal and water. Although the breakup may be different under these conditions, the results can be used as a preliminary estimation of the importance and possibilities of modelling of jet breakup mechanisms.

Additional information

Authors: SCHINS H, JRC Ispra (IT);VON BERG E, University of Stuttgart, Institut für Kernenergetik und Energiesysteme, Stuttgart (DE);BÜRGER M, University of Stuttgart, Institut für Kernenergetik und Energiesysteme, Stuttgart (DE);BURGER M, University of Stuttgart, Institut fur Kernenergetik und Energiesysteme, Stuttgart (DE)
Bibliographic Reference: Paper presented: Annual Meeting on Nuclear Technology '91, Bonn (DE), May 14-16, 1991
Availability: Available from (1) as Paper EN 35899 ORA
Record Number: 199110235 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en