公开(公告)号：EP4293686A1

公开(公告)日：2023-12-20

申请号：EP22917828.0

申请日：2022-01-07

申请人： Ling Ao Nuclear Power Co., Ltd. ,  China Nuclear Power Technology Research Institute Co., Ltd ,  China General Nuclear Power Corporation ,  CGN Power Co., Ltd.

发明人： CHEN, Mingzhou ,  REN, Qisen ,  LIAO, Yehong ,  WANG, Jiwei ,  LI, Lei ,  GUO, Daxi ,  XIE, Yiran ,  WEN, Jian ,  LI, Rui ,  GE, Hongen ,  ZHANG, Xiansheng ,  CHEN, Mengteng ,  ZHANG, Yongdong

IPC分类号： G21C3/62 ,  G21C21/10

摘要： A high-uranium-density ATF nuclear fuel pellet and a preparation method therefor. The high-uranium-density ATF nuclear fuel pellet comprises a columnar inner region (10), an isolation layer (20) covering the outer surface of the inner region (10), and a peripheral region (30) covering the isolation layer (20), wherein the inner region (10) is prepared from a nuclear fuel that is resistant to the oxidation of water and water vapor, and a high-uranium-density nuclear fuel; the peripheral area (30) is prepared from a nuclear fuel that is resistant to the oxidation of water and water vapor; and the mass of the high-uranium-density nuclear fuel accounts for 3-50% of the total mass of the inner region (10) and the isolation layer (20). The high-uranium-density ATF nuclear fuel pellet has an increased uranium loading amount and an effectively reduced central temperature, thereby improving the economical efficiency and safety of the operation of a reactor; and the use of the high-uranium-density nuclear fuel in a water-cooled nuclear reactor is realized, and the accident-tolerant capability of the nuclear reactor is improved.