基于长寿期压水堆的新型可燃毒物材料组合研究

童吉; 曲泠怡; 谢金森; 徐士坤; 于涛

doi:10.13832/j.jnpe.2024.02.0035

基于长寿期压水堆的新型可燃毒物材料组合研究

doi: 10.13832/j.jnpe.2024.02.0035

童吉^{1, 2,},
曲泠怡¹,
谢金森^{1, 2, ,},
徐士坤^{1, 2, 3},
于涛^{1, 2}

1.
南华大学核科学技术学院，湖南衡阳，421001
2.
南华大学湖南省数字化反应堆工程技术研究中心，湖南衡阳，421001
3.
日本东北大学回旋加速器与放射性同位素研究中心，日本宫城仙台，980-8578

基金项目: 湖南省科技创新技术项目（2020RC4053）

详细信息

作者简介:
童　吉（1996—），男，硕士研究生，现主要从事反应堆物理方向研究，E-mail: 1813238559@qq.com

通讯作者:
谢金森，E-mail: xiejinsen@139.com

中图分类号: TL329
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-05
- 修回日期: 2023-06-21
- 刊出日期: 2024-04-12

Study on New Burnable Poison Material Combinations Based on Long-life Pressurized Water Reactor

Tong Ji^{1, 2
,},
Qu Lingyi¹,
Xie Jinsen^{1, 2
, ,},
Xu Shikun^{1, 2, 3},
Yu Tao^{1, 2}

1.
School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, 421001, China
2.
Hunan Engineering & Technology Research Center for Virtual Nuclear Reactor, University of South China, Hengyang, Hunan, 421001, China
3.
Cyclotron and Radioisotope Center, Tohoku University, Sendai, Miyagi, 980-8578, Japan

摘要

摘要: 长寿期压水堆采用单一可燃毒物组件的设计不是最优选择。为满足长寿期压水堆中可燃毒物对反应性控制的综合需求，本文针对具有较好中子学性能的新型可燃毒物²³¹Pa₂O₃、PACS-J、PACS-L、¹⁶⁷Er₂O₃和¹⁵⁷Gd₂O₃进行组合研究。结果表明，采用“快燃耗”与“慢燃耗”可燃毒物进行组合的组件可以达到更优的结果。其中对于“低富集度”下的燃料组件，可以选用²³¹Pa₂O₃与PACS-J、PACS-L与¹⁶⁷Er₂O₃的组合方案；对于“高富集度”下的燃料组件，可以选用²³¹Pa₂O₃与PACS-J、¹⁵⁷Gd₂O₃和¹⁶⁷Er₂O₃的组合方案。因此，本文通过对“快燃耗”与“慢燃耗”可燃毒物组合设计，可实现对长寿期压水堆初始剩余反应性控制、反应性平缓释放及增加燃耗深度的要求。
- 新型可燃毒物 /
- 可燃毒物组合 /
- 快燃耗 /
- 慢燃耗
Abstract: Long-life pressurized water reactors using a single burnable poison assembly design is not the optimal choice. In order to meet the comprehensive requirements of burnable poisons for reactivity control in long-life pressurized water reactors, this paper conducts a combined study on new burnable poisons with good neutronics characteristics: ²³¹Pa₂O₃, PACS-J, PACS-L, ¹⁶⁷Er₂O₃, and ¹⁵⁷Gd₂O₃. The results show that the combination of "fast burnup" and "slow burnup" burnable poisons can achieve better results. For fuel assemblies with "low enrichment", the combination of ²³¹Pa₂O₃ with PACS-J, PACS-L with ¹⁶⁷Er₂O₃ can be selected; for fuel assemblies with "high enrichment", the combination of ²³¹Pa₂O₃ with PACS-J, ¹⁵⁷Gd₂O₃ with ¹⁶⁷Er₂O₃ can be selected. Therefore, this paper realizes the initial excess reactivity control, smooth release of reactivity, and increased burnup level of long-life pressurized water reactors through the combined design of "fast burnup" and "slow burnup" burnable poisons.
- New burnable poison /
- Combination of burnable poisons /
- Fast burnup /
- Slow burnup

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图 1 燃料组件示意图

Figure 1. Schematic Diagram of Fuel Assembly

下载: 全尺寸图片幻灯片

图 2 18%燃料富集度下候选可燃毒物燃耗计算结果

Figure 2. Burnup Calculation Results of Candidate Burnable Poison with 18% Fuel Enrichment

下载: 全尺寸图片幻灯片

图 3 60%燃料富集度下候选可燃毒物燃耗计算结果

Figure 3. Burnup Calculation Results of Candidate Burnable Poison with 60% Fuel Enrichment

下载: 全尺寸图片幻灯片

图 4 可燃毒物²³¹Pa₂O₃与¹⁶⁷Er₂O₃、PACS-J和PACS-L组合计算结果

Figure 4. Calculation Results for Burnable Poison ²³¹Pa₂O₃ Combined with ¹⁶⁷Er₂O₃, PACS-J and PACS-L

下载: 全尺寸图片幻灯片

图 5 可燃毒物²³¹Pa₂O₃与¹⁶⁷Er₂O₃、¹⁵⁷Gd₂O₃和PACS-J组合计算结果

Figure 5. Calculation Results for Burnable Poison ²³¹Pa₂O₃ Combined with ¹⁶⁷Er₂O₃, ¹⁵⁷Gd₂O₃ and PACS-J

下载: 全尺寸图片幻灯片

表 1 聚碳硼烷-硅氧烷-乙炔基组成^[11]

Table 1. Poly-Acetylenic-Carborane-Siloxane Composition

可燃毒物	密度/（g·cm⁻³）	不同元素的原子数
可燃毒物	密度/（g·cm⁻³）	C	H	B	O	Si
PACS-J	1.0	14	34	10	2	4
PACS-L	0.9	44	84	10	5	12

下载: 导出CSV

表 2 18%燃料富集度较优可燃毒物组合结果

Table 2. Results of the Optimal Burnable Poison Combination with 18% Fuel Enrichment

可然毒物组合	相较于无可燃毒物组件的燃耗深度变化/ [MW·d·t⁻¹(U)]	相较于含单一“快燃耗” 可燃毒物组件的反应性波动变化
¹⁶⁷Er₂O₃(1)-²³¹Pa₂O₃(12)	+5500	−0.07
PACS-J(1)-²³¹Pa₂O₃ (6)	+7790	−0.06
PACS-L(1)-²³¹Pa₂O₃(6)	+5040	−0.11

下载: 导出CSV

表 3 60%燃料富集度较优可燃毒物组合结果

Table 3. Results of the Optimal Burnable Poison Combination with 60% Fuel Enrichment

可然毒物组合	相较于无可燃毒物组件的燃耗深度变化/ [MW·d·t⁻¹ (U)]	相较于含单一“快燃耗” 可燃毒物组件的反应性波动变化
¹⁶⁷Er₂O₃(1)-²³¹Pa₂O₃(12)	+18336	−0.1
¹⁵⁷Gd₂O₃(1)-²³¹Pa₂O₃(10)	−4581	−0.04
PACS-J(1)-²³¹Pa₂O₃(10)	+13752	−0.09

下载: 导出CSV

参考文献(13)

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