Presentation Information
[2D15]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
*Tomoki Yoshikawa1, Kazuhiko Izawa1, Tomoaki Watanabe1, Shouhei Araki1, Satoshi Gunji1 (1. JAEA)
Keywords:
STACY,MVP,MCNP,Solomon,Serpent,Critical Experiment,Monte Carlo method,Comparison of calculation codes
We conducted performance tests on five types of cores at the modified STACY as first critical cores for resumption of operation.
The core with grid intervals of 1.5 cm has three types of rod fuel numbers and critical water levels: (1) 277 rods, about 70 cm, (2) 253 rods, about 110 cm, and (3) 253 rods, about 120 cm, with sample driver for thermal power calibration. 2.54 cm has two types: (4) 241 rods, about 70 cm, and (5) 213 rods, about 110 cm. We analyzed the critical water level in each core using MVP with JENDL-4 for the configuration. Similar calculations were conducted for the other codes MCNP, Solomon and Serpent2 to compare the evaluation results.
The core with grid intervals of 1.5 cm has three types of rod fuel numbers and critical water levels: (1) 277 rods, about 70 cm, (2) 253 rods, about 110 cm, and (3) 253 rods, about 120 cm, with sample driver for thermal power calibration. 2.54 cm has two types: (4) 241 rods, about 70 cm, and (5) 213 rods, about 110 cm. We analyzed the critical water level in each core using MVP with JENDL-4 for the configuration. Similar calculations were conducted for the other codes MCNP, Solomon and Serpent2 to compare the evaluation results.
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