Computational Neutronics Methods and Transmutation Performance Analyses for Light Water Reactors

M. Asgari ; B. Forget ; S. Piet ; R. Ferrer ; S. Bays

关键词: S;    AMERICIUM;    CURIUM;    NEPTUNIUM;    NUCLEAR FUELS;    NUCLEAR POWER PLANTS;    OXIDES;    PERFORMANCE;    PLUTONIUM;    PWR TYPE REACTORS;    RECYCLING;    STORAGE;    TRANSMUTATION;    VECTORS;    VIABILITY;    WATER Advanced Fuel Cycle Initiative;   

DOI  :  10.2172/919552
RP-ID  :  INL/EXT-07-12472
PID  :  OSTI ID: 919552
Others  :  TRN: US0807389

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

The urgency for addressing repository impacts has grown in the past few years as a result of Spent Nuclear Fuel (SNF) accumulation from commercial nuclear power plants. One obvious path that has been explored by many is to eliminate the transuranic (TRU) inventory from the SNF thus reducing the need for additional long term repository storage sites. One strategy for achieving this is to burn the separated TRU elements in the currently operating U.S. Light Water Reactor (LWR) fleet. Many studies have explored the viability of this strategy by loading a percentage of LWR cores with TRU in the form of either Mixed Oxide (MOX) fuels or Inert Matrix Fuels (IMF). A task was undertaken at INL to establish specific technical capabilities to perform neutronics analyses in order to further assess several key issues related to the viability of thermal recycling. The initial computational study reported here is focused on direct thermal recycling of IMF fuels in a heterogeneous Pressurized Water Reactor (PWR) bundle design containing Plutonium, Neptunium, Americium, and Curium (IMF-PuNpAmCm) in a multi-pass strategy using legacy 5 year cooled LWR SNF. In addition to this initial high-priority analysis, three other alternate analyses with different TRU vectors in IMF pins were performed. These analyses provide comparison of direct thermal recycling of PuNpAmCm, PuNpAm, PuNp, and Pu.