Presentation Information
[3N04]Design of the grid plate and detector loading system for the modified STACY toward the development of subcriticality evaluation technology
*Tomoki Yoshikawa1, Shouhei Araki1, Kenta Hasegawa1, Junichi Ishii1, Satoshi Gunji1, Masaaki Araki1 (1. JAEA)
Keywords:
Fukushima Dai-ichi NPP,Modified STACY,Subcriticality,Fuel Debris,Critical Experiment
The development of criticality monitoring technology is required for the full-scale retrieval of fuel debris caused by the Fukushima Daiichi Nuclear Power Plant accident.
As part of these efforts, we are planning to establish the necessary infrastructure within the modified STACY critical assembly to facilitate testing of neutron detectors intended for criticality monitoring. This presentation provides a technical overview of the grid plates and the insertion tube, which are currently being developed as components of a system to allow detector insertion into the reactor core. Furthermore, it presents the results of the modified STACY neutronic characteristics analysis conducted under conditions in which the neutron detector is loaded.
As part of these efforts, we are planning to establish the necessary infrastructure within the modified STACY critical assembly to facilitate testing of neutron detectors intended for criticality monitoring. This presentation provides a technical overview of the grid plates and the insertion tube, which are currently being developed as components of a system to allow detector insertion into the reactor core. Furthermore, it presents the results of the modified STACY neutronic characteristics analysis conducted under conditions in which the neutron detector is loaded.
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