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长期低功率运行对CNP600堆芯中子学参数的影响
Influence of extended low power operation on neutronics parameters of CNP600
- 核技术 2016年39卷第11期 文章编号：110602
- 作者机构：
中国核电工程有限公司 反应堆工艺研究所 北京 100840
- 作者简介：
[ "肖会文,男,1989年出生,2014年于中国科学院大学获硕士学位,从事反应堆物理工作", "XIAO Huiwen, male, born in 1989, graduated from University of Chinese Academy of Sciences with a master’s degree in 2014, engaged in the work of the reactor physics" ]
- 基金信息：
DOI：10.11889/j.0253-3219.2016.hjs.39.110602
中图分类号： TL99收稿日期：2015-12-22，
修回日期：2016-09-05，
纸质出版日期：2016-11
- 稿件说明：
移动端阅览
肖会文, 刘国明, 姚红, 等. 长期低功率运行对CNP600堆芯中子学参数的影响[J]. 核技术, 2016,39(11):110602
Huiwen XIAO, Guoming LIU, Hong YAO, et al. Influence of extended low power operation on neutronics parameters of CNP600[J]. Nuclear techniques, 2016, 39(11): 110602
肖会文, 刘国明, 姚红, 等. 长期低功率运行对CNP600堆芯中子学参数的影响[J]. 核技术, 2016,39(11):110602 DOI： 10.11889/j.0253-3219.2016.hjs.39.110602.
Huiwen XIAO, Guoming LIU, Hong YAO, et al. Influence of extended low power operation on neutronics parameters of CNP600[J]. Nuclear techniques, 2016, 39(11): 110602 DOI： 10.11889/j.0253-3219.2016.hjs.39.110602.
摘要
随着我国能源形势的发展，核电将面临调峰运行的挑战。CNP600是我国现役的重要堆型，有必要对CNP600长期低功率运行进行评估。为了验证CNP600在长期低功率运行时中子学方面的安全性，从反应堆物理角度对CNP600长期低功率运行进行初步分析，包括长期低功率运行对堆芯径向及轴向功率分布的影响、停堆深度、焓升因子
F
△
H
与功率峰因子
F
Q
的变化、燃耗及最大线功率的变化。计算结果显示，CNP600实行长期低功率运行对径向功率分布的改变很小，对轴向功率偏移的改变剧烈，通过控制棒的调节，可以维持轴向功率偏移的稳定；停堆深度、
F
△
H
、燃耗及最大线功率密度均满足安全要求。初步的分析结果表明，CNP600在反应堆方面能满足长期低功率运行。
Abstract
Background
2
With the development of energy industry
nuclear power is confronted with more challenges in peak load operation. CNP600 is the substantial of active service reactors
and the evaluation of CNP600 in low power operation is of great necessity.
Purpose
2
The aim is to evaluate whether the CNP600 can meet the neutronics safety requirements of extended low power operation (ELPO).
Methods
2
The influences of ELPO on the reactor physics was analyzed in this paper
including axial and radical power distribution
shutdown margin
enthalpy rise factor
F
△
H
power peak factor
F
Q
burnup
and liner power density.
Results
2
The results indicate that the ELPO has little impact on radical power distribution
but profound impact on axial power distribution which could remain stable by the movement of control rod yet; the shutdown margin
F
△
H
and
F
Q
burnup
liner power density are lower than the limit values.
Conclusion
2
The CNP600 can meet the neutronics safety requirements of ELPO.
关键词
Keywords
references
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