六边形套管型燃料堆芯临界物理试验方案设计研究

Design and Study of Critical Physical Test Scheme for Core with Hexagonal Jacketed Fuel

为验证六边形套管型燃料堆芯核设计计算程序CELL和CPLEV2的计算精度和可靠性,本文根据六边形套管型燃料堆芯临界物理试验内容,提出了11个堆芯临界物理试验方案,并进行了计算论证分析。其中,临界质量测量方案考虑了计算与实际有偏差时,可以对堆芯布置进行微调,确保全提棒有效增殖因子与临界状态的偏差在可接受范围内。论证结果表明,本文提出的堆芯装载方案满足堆芯核设计程序可靠性检验要求,可以作为六边形套管型燃料堆芯临界物理试验方案。

This paper proposes 11 core critical physical test schemes and performs corresponding calculations,demonstration and analysis,based on the critical physical test contents of the core with hexagonal jacketed fuel,in order to verify the calculation accuracy and reliability of the nuclear design calculation codes CELL and CPLEV2 for such core.The critical mass measurement scheme considers a fine adjustment of the core layout in the presence of a deviation between the calculation and actual results to ensure that the deviation between the effective multiplication factor in the case of full rod withdrawal and critical state is acceptable.The demonstration shows that the core loading scheme proposed in this paper meets the reliability test requirements for the core design code and can be used as the critical physical test scheme for the core with hexagonal jacketed fuel.