Modification of STACY for the study of criticality characteristics of fuel debris, 17; The First criticality of STACY and evaluation results of the calculation code

Yoshikawa, Tomoki ; Izawa, Kazuhiko ; Araki, Shohei ; Watanabe, Tomoaki ; Gunji, Satoshi

We conducted performance tests on five types of cores at the modified STACY as first critical cores for resumption of operation. The performance test consisted of a core with 253 and 277 fuel rods and 253 fuel rods loaded with a sample drive at grid intervals of 1.5 cm, and 213 and 241 fuel rods at grid intervals of 2.54 cm. We analyzed the critical water level in each core using MVP with JENDL-4 as the nuclear data for the configuration. Similar calculations were conducted for the other codes MCNP, Solomon and SERPENT to compare the evaluation results.

Language	:	Japanese
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Meeting title	:	日本原子力学会2024年秋の大会
Held date	:	2024/09
Location (city)	:	仙台
Location (country)	:	日本
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Keywords	:	STACY; 定常臨界実験装置; MVP; MCNP; Solomon; SERPENT; Critical Experiment
Research Facility	:	STACY(定常臨界実験装置)
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Cooperating Institute	:	原子力規制庁

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Registration No. : BB20240948
JAEA Abstracts No. :
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