Study on Reactivity Control of CSR150
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摘要: 超临界水冷技术示范堆(CSR150)借鉴了中国超临界水冷堆(CSR1000)的反应性控制方式,依靠可燃毒物及控制棒进行反应性控制。本文在优选Er2O3作为可燃毒物的基础上,提出采用富集167Er的设计方式,以降低寿期末Er2O3带来的反应性惩罚。对CSR150的控制棒设计进行研究,提出控制棒分区设计方案,采用富集硼作为安全棒吸收体材料,提升堆芯反应性控制能力。通过对堆芯关键设计参数进行分析评价可知,本文提出的反应性控制方案满足CSR150设计要求。Abstract: The supercritical water-cooled demonostration reactor CSR150 uses the reactivity control technology in CSR1000 for reference: reactivity control is realized through burnable poisons and control rods. Based on the selection of erbium oxide as burnable poison, this paper puts forward a design method of 167Er enrichment to reduce the reactivity penalty caused by erbium oxide at EOL. The control rod design of CSR150 is studied, and the zoning design of the control rod is proposed. Boron enrichment is used as the safety rod material to improve the reactivity control ability. The evaluation results of key parameters of the core show that the proposed reactivity control scheme meets the design requirements of CSR150.
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Key words:
- Supercritical water-cooled reactor /
- CSR150 /
- burnable poison /
- Control rods /
- Enrichment isotope /
- Reactivity control
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表 1 控制棒价值计算结果
Table 1. Control Rod Value Calculation Results
状态 控制棒价值/pcm 全棒提 8888 S1插入 843 S2插入 2143 B插入 1882 A插入 2242 表 2 “卡棒”计算结果
Table 2. "Control Rod Stuck" Calculation Results
发生“卡棒”的棒组 堆芯Keff S1 0.9816 S2 0.9754 B 0.9742 A 0.9789 -
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