[2J10-16] Numerical Analysis

[2J12] Evaluation on Reactor Core Degradation and Relocation at Severe Accident

(3) MAAP5 analysis of LOFT LP-FP-2 and Phebus FPT0 Tests

*Koji Nishida¹, Naoki Sano¹, Seitaro Sakurai¹, Michio Murase¹ (1. INSS)

Keywords:Severe Accident, Fuel Degradation, Relocation, MAAP5

The results for the LOFT LP-FP-2 test, which simulates the early stage of core damage at severe accident (SA), and the Phebus FPT0 test, which simulates the late stage of fuel damage when a molten pool is formed, were examined with the SA analysis code MAAP5. It was confirmed that MAAP5 can simulate the fuel cladding temperatures of the LOFT LP-FP-2 and Phebus FPT0 tests with different core degradation conditions, different sizes of test sections, and different experimental times.