Research on Power Effect of Th-U Fuel on TACR (Thorium Based Advanced CANDU Reactor)
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摘要: 在CANDU堆燃料栅元物理的研究中,通常选择堆芯平均的燃料比功率对栅元进行计算模拟,而在TACR中,由于使用了钍燃料,比功率的不同就可能对核反应产生影响,并通过影响棒束栅元的基本截面参数而影响到全堆计算的结果。本文对不同定功率条件下,含全铀燃料和钍-铀燃料棒束的栅元截面参数随辐照值的变化以及钍燃料棒束中233Pa和233U的质量份额进行了计算分析,认为功率会对钍燃料的栅元宏观截面产生影响,在全堆计算中,栅元基本参数应尽量使用基于历史的局部参数法。
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关键词:
- 钍基先进CANDU堆 /
- 钍燃料 /
- 比功率
Abstract: Researching on the CANDU lattice physics,average power of the core is carried out.Though the value of power may have effect on the nuclear reaction in the TACR core that used thorium fuel, the lattice cross sections are also different in various power conditions.This paper has studied the evolution of the lattice cross section data of the all uranium fuel lattice and the Th-U lattice with the radiation value.The 233Pa and 233U weight content in the thorium fuel in different power conditions is also examined.The results show that the power has effect on the macro section of the thorium fuel.When doing the core calculation with thorium fuel,the history-based local-parameters methodology is adopted.-
Key words:
- Thorium Based Advanced CANDU Reactor /
- Thorium fuel /
- Specific power
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