Experimental studies on the upward fuel discharge for elimination of severe recriticality during core-disruptive accidents in sodium-cooled fast reactors
Experimental studies on the upward fuel discharge for elimination of severe recriticality during core-disruptive accidents in sodium-cooled fast reactors
复制标题
钠冷快堆堆芯破坏事故中燃料向上排出消除严重再临界的实验研究
DOI：
10.1080/00223131.2014.912566
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发表时间：
2014
影响因子：
1.2
通讯作者：
Yuri S. Vassiliev
中科院分区：
文献类型：
--
作者：
K. Kamiyama;Kensuke Konishi;I. Sato;Jun;Ken;V. A. Zuyev;A. Pakhnits;V. Vityuk;A. Vurim;V. A. Gaidaichuk;A. Kolodeshnikov;Yuri S. Vassiliev
为了消除钠冷快堆堆芯破坏性事故（CDA）的情况下的能量潜力，已被认为是一个内导管结构的燃料组件（FAIDUS）的介绍。最近，FAIDUS的设计方案，导致熔融燃料向上放电已被认为是日本钠冷快堆（JSFR）的参考堆芯设计。在这项研究中，一系列的实验，其中包括三个堆外测试和一个堆内测试，以获得实验知识的熔融燃料的向上排放。通过堆外和堆内试验，获得了燃料向上排放的顺序以及初始压力条件对向上排放的影响的实验数据。初步推断目前的结果，在早期阶段的CDA在JSFR设计的假设条件表明，足够的熔融燃料的向上流动速率，预计将防止核心熔化的进展超出燃料组件的规模，向上放电的选择将是有效的，在消除能量潜力。
In order to eliminate the energetic potential in the case of postulated core-disruptive accidents (CDAs) of sodium-cooled fast reactors, introduction of a fuel subassembly with an inner-duct structure (FAIDUS) has been considered. Recently, a design option of FAIDUS which leads molten fuel to upward discharge has been considered as the reference core design of the Japan Sodium-Cooled Fast Reactor (JSFR). In this study, a series of experiments which consisted of three out-of-pile tests and one in-pile test were conducted to obtain experimental knowledge of the upward discharge of molten fuel. Experimental data which showed a sequence of upward fuel discharge and effects of initial pressure conditions on upward discharge were obtained through the out-of-pile and in-pile test. Preliminary extrapolation of the present results to the supposed condition in the early phase of the CDA in the JSFR design suggests that the sufficient upward flow rate of molten fuel is expected to prevent the core melting from progressing beyond the fuel subassembly scale and that the upward discharge option will be effective in eliminating the energetic potential.