Design report on SCDAP/RELAP5 model improvements - debris bed and molten pool behavior | Zendy

C.M. Allison | Zendy; J. L. Rempe | Zendy; S.A. Chavez | Zendy

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Design report on SCDAP/RELAP5 model improvements - debris bed and molten pool behavior

Author(s) -

C.M. Allison,

J. L. Rempe,

S.A. Chavez

Publication year - 1994

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/29431

Subject(s) - debris , nuclear fission product , corium , nuclear engineering , coolant , thermal hydraulics , fission products , environmental science , engineering , heat transfer , geology , mechanical engineering , mechanics , oceanography , physics

the SCDAP/RELAP5/MOD3 computer code is designed to describe the overall reactor coolant system thermal-hydraulic response, core damage progression, and in combination with VICTORIA, fission product release and transport during severe accidents. Improvements for existing debris bed and molten pool models in the SCDAP/RELAP5/MOD3.1 code are described in this report. Model improvements to address (a) debris bed formation, heating, and melting; (b) molten pool formation and growth; and (c) molten pool crust failure are discussed. Relevant data, existing models, proposed modeling changes, and the anticipated impact of the changes are discussed. Recommendations for the assessment of improved models are provided

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