公开(公告)号：US20140185730A1

公开(公告)日：2014-07-03

申请号：US14060432

申请日：2013-10-22

申请人： Korea Hydro & Nuclear Power Co., Ltd ,  Korea Atomic Energy Research Institute

发明人： Keon-Sik KIM ,  Yang-Hyun KOO ,  Jong-Hun KIM ,  JangSoo OH ,  Young Woo RHEE ,  Dong-Joo KIM ,  Jae-Ho YANG

IPC分类号： G21C3/04 ,  G21C3/16

CPC分类号： G21C3/044 ,  G21C3/16 ,  G21C3/17 ,  G21C3/58 ,  G21C3/62 ,  G21C21/02 ,  G21C2003/045 ,  Y02E30/38

摘要： A uranium dioxide nuclear fuel pellet has about 50 to about 400 μM (with respect to a 3-dimentional size) microcells formed of a ceramic material having a chemical attraction with fission products generated in the nuclear fuel pellet to absorb and trap the fission products, such that the extraction of the fission product may be retrained in a normal operation condition and that the performance of the nuclear fuel may be enhanced by mitigating PCI. In addition, highly radioactive fission products including Cs and I having a large generation amount or a long half-life enough to affect the environments can be trapped in the pellet in an accident condition, without being released outside.

摘要翻译： 二氧化铀核燃料颗粒具有约50至约400微米（相对于三维尺寸），由具有化学吸引力的陶瓷材料形成，其具有在核燃料颗粒中产生的裂变产物以吸收和捕获裂变产物， 使得裂变产物的提取可以在正常操作条件下再培训，并且可以通过减轻PCI来提高核燃料的性能。 另外，具有大的发生量或长半衰期的Cs和I的高度放射性的裂变产物可以在事故状态下被捕获到颗粒中，而不会被外部释放。

公开(公告)号：US20200027602A1

公开(公告)日：2020-01-23

申请号：US16246749

申请日：2019-01-14

申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE

发明人： Dong Seok KIM ,  Dong-Joo KIM ,  JangSoo OH ,  Keon-Sik KIM ,  Jong-Hun KIM ,  Jae-Ho YANG

IPC分类号： G21C21/02 ,  G21C3/62 ,  G21C3/04

摘要： Disclosed are a nuclear fuel pellet having enhanced thermal conductivity and a method of manufacturing the same, the method including (a) a step of manufacturing a mixture including a nuclear fuel oxide powder and a thermally conductive plate-shaped metal powder; and (b) a step of molding and then heat-treating the thermally conductive plate-shaped metal powder to have an orientation in a horizontal direction in the mixture, thereby forming a pellet.

公开(公告)号：US20160372215A1

公开(公告)日：2016-12-22

申请号：US14591498

申请日：2015-01-07

申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE

发明人： Dong-Joo KIM ,  Young Woo RHEE ,  Keon-Sik KIM ,  Jong-Hun KIM ,  JangSoo OH ,  Jae-Ho YANG ,  Yang-Hyun KOO

IPC分类号： G21C3/60 ,  G21C3/04 ,  G21C3/62

CPC分类号： G21C3/04 ,  G21C3/623 ,  G21C21/02 ,  G21C2003/045 ,  Y02E30/38

摘要： A method of a nuclear fuel pellet including a thermal conductive metal and a nuclear fuel pellet prepared thereby. The method includes preparing an oxide nuclear fuel granule having about 30%-45% theoretical density, mixing the fuel granule with thermal conductive metal powder, compacting the fuel granule with which the thermal conductive metal powder is mixed to prepare a green pellet, and sintering the green pellet. In the method, the sintering may be performed under a reducing gas atmosphere that is the same as the commercial pellet preparing process. Thus, compatibility compared to existing commercial preparing processes may be superior. Also, since a liquefied oxide formation process and a reducing process are omitted, the distribution uniformity of the metal material within the pellet may be superior. Therefore, the nuclear fuel pellet in which the metal network and fine microstructure are uniformly distributed within the pellet may be prepared.

摘要翻译： 一种核燃料颗粒的方法，其包括由其制备的导热金属和核燃料颗粒。 该方法包括制备具有约30％-45％理论密度的氧化物核燃料颗粒，将燃料颗粒与导热金属粉末混合，压实混合导热金属粉末的燃料颗粒以制备生坯，并烧结 绿色颗粒。 在该方法中，可以在与商业颗粒制备方法相同的还原气体气氛下进行烧结。 因此，与现有的商业制备方法相比的兼容性可能是优越的。 此外，由于省略了液化氧化物形成工艺和还原工艺，所以颗粒内的金属材料的分布均匀性可以是优异的。 因此，可以制备其中金属网络和精细微结构均匀分布在颗粒内的核燃料颗粒。

公开(公告)号：US20140185731A1

公开(公告)日：2014-07-03

申请号：US14061662

申请日：2013-10-23

申请人： Korea Atomic Energy Research Institute

发明人： Keon-Sik KIM ,  Yang-Hyun KOO ,  Jong-Hun KIM ,  JangSoo OH ,  Young Woo RHEE ,  Dong-Joo KIM ,  Jae-Ho YANG

IPC分类号： G21C3/04

CPC分类号： G21C3/044 ,  G21C3/17 ,  G21C3/58 ,  G21C21/02 ,  G21C2003/045 ,  Y02E30/38

摘要： A uranium dioxide nuclear fuel pellet includes metallic microcells having a high protection capacity for fission products and a high thermal conductivity simultaneously arranged in the nuclear fuel pellet to trap fission products, such that extraction of fission products may be restrained in a normal operation condition and that the temperature of a nuclear fuel may be lowered to enhance the performance of the nuclear fuel, only to restrain extraction of radioactive fission products toward the environment in an accident condition to enhance a stability of the nuclear fuel pellet, and a fabricating method thereof.

摘要翻译： 二氧化铀核燃料颗粒包括对于裂变产物具有高保护能力的金属微细胞和同时布置在核燃料颗粒中的高热导率以捕获裂变产物，从而可以在正常操作条件下抑制裂变产物的提取，并且 可以降低核燃料的温度以提高核燃料的性能，只是为了在事故条件下抑制放射性裂变产物向环境的提取，以提高核燃料颗粒的稳定性及其制造方法。