[1I14-18] Fuel & FP Behavior in Accident

[1I14] A study on the chemical reaction between fuel materials and graphite block

(1)Thermodynamic equilibrium calculations

Shigetaka Maeda¹, Isamu Sato², *Masaya Yamamoto¹, Hiroyuki Naito¹, Koji Maeda¹ (1. JAEA, 2. Tokyo City Univ.)

Keywords:Fast reactor, nuclear fuel, graphite, reaction

In case of core melt accident in Joyo, molten fuel will be caught by a graphite block in the safety vessel. A chemical reaction between molten fuel and graphite was studied using the thermodynamic equilibrium calculation code FactSage. It was confirmed that graphite isn't encroached on rapidly in condition of mixing fuel material, a coolant sodium and structural material (SUS).