In the 1991 the CSNI issued a State-of-the-art report on in vessel core degradation, which reviewed experimental and analytical studies for light water reactor of western design. The present report updates to June 1995 the original SOAR in areas relevant to the reinforced concerted action of the European Commission on core degradation. The first part of the report is devoted to the phenomenology of core damage in case of a severe accident up to the late phase involving substantial melting and relocation of fuel materials, with the core loosing its geometry and forming debris/rubbe bed and melt pool regions. The main experimental programmes are reviewed from which valuable data have become available: of particular importance the CORA early phase melt progression series and separate effects materials interactions programmes. The codes widely used for melt progression analysis in the European Community are reviewed in the report. Significant deficiencies in the modelling following the onset of core degradation have been addressed, with improvements in the capabilities of European codes such as ICARE2 and KESS.
Bibliographic Reference: EUR 16695 EN (1996) 230pp., FS, ECU 25
Availability: Available from the (2)
ISBN: ISBN 92-827-5641-6
Record Number: 199610288 / Last updated on: 1996-03-18
Original language: en
Available languages: en