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|Title:||Core Loss During a Severe Accident (COLOSS)|
|Authors:||ADROGUER B.; BERTRAND F.; CHATELARD P.; COCUAUD N.; VAN DORSSELAERE J.p.; BELLENFANT L.; KNOCKE D.; BOTTOMLEY PAUL; VRTILKOVA V.; BELOVSKY L.; MUELLER Klaus; HERING W.; HOMANN C.; KRAUSS W.; MIASSOEDOV A.; SCHANZ G.; STEINBRUCK M.; STUCKERT J.; HOZER Z.; BANDINI G.; BIRCHLEY J.; V. BERLEPSCH T.; KLEINHIETPASS I.; BUCK M.; BENITEZ J.a.f.; VIRTANEN E.; MARGUET S.; AZARIAN G.; CAILLAUX A.; PLANK H.; BOLDYREV A.v.; VESHCHUNOV M.s.; KOBZAR V.; ZVONAREV Y.; GORYACHEV A.|
|Citation:||NUCLEAR ENGINEERING AND DESIGN vol. 235 p. 173-198|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in Journals|
|Abstract:||The core loss during a severe accident (COLOSS) project was a 3-year shared-cost action, which started in February 2000. The project is concerned with the consequences that core degradation, occurring under severe accident conditions, may have on H2 production, melt generation and the source term. Unresolved in-vessel risk-relevant issues are studied, through a large number of experiments such as UO2 and MOX dissolution by molten zircaloy and burn-up effects, simultaneous dissolution of UO2 and ZrO2 in rod geometry, oxidation of U-O-Zr mixtures, oxidation of pure B4C material and degradation and oxidation of B4C control rods. SA computer codes are used for plant calculations to assess SA code capabilities and to apply results produced in this project to evaluate their consequences on key SA sequences occurring in different plants such as PWR-1300, BWR, VVER-1000, EPR and in the TMI-2 accident.|
|JRC Institute:||Institute for Energy and Transport|
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