[1I01-06] Fuel Debris Characterization

[1I04] Improvement of the STACY critical assembly to measure critical characteristics of fuel debris

(1)Overview and progress of the modified STACY

*Shouhei Araki¹, Kazuhiko Izawa¹, Satoshi Gunji¹, Kenya Suyama¹, Junichi Ishii¹, Masakazu Seki¹, Fuyumi Kobayashi¹, Hiroyuki Fukaya¹ (1. JAEA)

Keywords:Fukushima Dai-ichi NPP, modified STACY, Critical Experiment, Fuel Debris

To measure critical characteristics of fuel debris, the Static Experiment Critical Facility (STACY) is being converted to the heterogeneous thermal system using fuel rods and light water moderator from the homogeneous system using solution fuel. This report presents an overview and progress of the modified STACY.