Proceedings of the 15th International Conference on Nuclear Engineering (ICONE-15)
巻, 号, ページ
出版年月
2007年4月
出版者
和文:
英文:
American Society of Mechanical Engineers
会議名称
和文:
英文:
15th International Conference on Nuclear Engineering (ICONE-15)
開催地
和文:
英文:
Nagoya, Japan
アブストラクト
A new reactor burnup strategy CANDLE was proposed, where shapes of neutron flux, nuclide densities and power density distributions remain constant but move to an axial direction.Application of this burnup strategy to neutron rich fast reactors makes excellent performances. Only natural or depleted uranium is required for the replaced fresh fuels. About 40 % of natural or depleted uranium undergoes fission. But presently, there are no data for material integrity under a condition of 40% burnup.In this paper, this we try to solve this proglem by the following method. Fuels burning in progress are removed from core, and recladded. During this process FP gas is removed from these fuels. Then, they are charged in the previous position of core again. Finally, 40% burnup is attained with maintaining material integrity.We performed the burn-up calculation including the above process and investigated reactor physics properties. As a result, attained maximum neutron fluence became small because of recladding. Effective neutron multiplication factor when reactor start up was 1.0015 and one just before reactor stopped was 1.003. The effects of recladding appeared small. Shape of each distribution was almost same and burnup was about 41%.
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