Analysis of Core Physics Experiments on Fresh and Irradiated BR3 MOX Fuel in REBUS Program
Autor: | Koichi Sakurada, Yamato Hayashi, Kazuo Azekura, Toru Yamamoto, Yoshihira Ando, Shigeaki Aoki, Katsuyuki Kawashima |
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Rok vydání: | 2009 |
Předmět: | |
Zdroj: | Journal of Nuclear Science and Technology. 46:484-509 |
ISSN: | 1881-1248 0022-3131 |
Popis: | As part of an international experimental program REBUS, core physics experiments have been implemented on a UO2 core, which consists of 3.3 and 4.0 wt% UO2 fuel rods in a square pitch of 1.26 cm, and two partial MOX cores, which replace 7 × 7 UO2 fuel rods in the center of the UO2 core by fuel bundles made of fresh BR3 MOX fuel or irradiated BR3 MOX fuel with an average burnup of 20GWd/t. Burnup calculations of the BR3 MOX fuel were performed using a general-purpose neutronic calculation code SRAC, and core calculations of the three critical cores were carried out using SRAC, a transport calculation code THREEDANT, and a continuous-energy Monte Carlo code MVP. The measured inventories of major U and Pu isotopes on a sample taken from the BR3 MOX fuel agree with the results of the burnup calculations within 3% deviation. The k eff's of the three cores are from 0.985 to 1.002. The measured burnup reactivity of the irradiated BR3 MOX fuel was well reproduced by the three types of core calculations. The influ... |
Databáze: | OpenAIRE |
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