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

Technical Report · Mon Oct 31 23:00:00 EST 1994

DOI:https://doi.org/10.2172/29431· OSTI ID:29431

Allison, C M; Rempe, J L; Chavez, S A

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.

• Research Organization: Idaho National Engineering Lab., Idaho Falls, ID (United States)
• Sponsoring Organization: Nuclear Regulatory Commission, Washington, DC (United States)
• DOE Contract Number: AC07-94ID13223
• OSTI ID: 29431
• Report Number(s): INEL--94/0174; ON: TI95008573
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
DAMAGE
FISSION PRODUCT RELEASE
FUEL ELEMENTS
MELTDOWN
MELTING
MODIFICATIONS
REACTOR COOLING SYSTEMS
REACTOR CORES
S CODES
THERMAL CONDUCTIVITY
THREE MILE ISLAND-2 REACTOR