[M31-36] 福島事故セッション2

[M35] Assessment of Core Status of TEPCO's Fukushima Daiichi Nuclear Power Plants

(20) Oxidation model improvement in SAMPSON considering steam conservation and cladding rupture

^〇Maolong Liu¹, Yuki Ishiwatari², Nejdet Erkan¹, Koji Okamoto¹ (1.The University of Tokyo, 2.Hitachi GE)

Keywords:Fukushima accident, Oxidation reaction, Creep rupture

Oxidation reaction of these metals with high-temperature steam would have significant impacts on the melting and subsequent core relocation. During the core heat-up, the small leakage flow of steam caused by failure of the reactor coolant system pressure boundary determines the availability and the distribution of steam in the core, which could limit the total amount of oxidation energy.