Study on neutronics design of ordered-pebble-bed fluoride-salt-cooled high-temperature experimental reactor

被引：0

作者：

Rui Yan ^{[1
]}

Shi-He Yu ^{[1
]}

Yang Zou ^{[1
]}

Qun Yang ^{[1
]}

Bo Zhou ^{[1
,2
]}

Pu Yang ^{[1
,2
]}

Hong-Hua Peng ^{[1
]}

Ya-Fen Liu ^{[1
]}

Ye Dai ^{[1
]}

Rui-Ming Ji ^{[1
]}

Xu-Zhong Kang ^{[1
]}

Xing-Wei Chen ^{[1
,2
]}

Ming-Hai Li ^{[1
]}

Xiao-Han Yu ^{[1
]}

机构：

[1] Shanghai Institute of Applied Physics, Chinese Academy of Sciences

[2] University of Chinese Academy of Sciences

来源：

Nuclear Science and Techniques | 2018年 / 29卷 / 06期

关键词：

Ordered-pebble-bed fluoride-salt-cooled high-temperature experimental reactor; Neutronics design; Reactive control; Neutron spectrum; Temperature coefficient;

D O I：

暂无

中图分类号：

TL37 [反应堆设计、建造、安装、实验与测量];

学科分类号：

摘要：

This paper presents a neutronics design of a 10 MW ordered-pebble-bed fluoride-salt-cooled high-temperature experimental reactor. Through delicate layout, a core with ordered arranged pebble bed can be formed,which can keep core stability and meet the space requirements for thermal hydraulics and neutronics measurements.Overall, objectives of the core include inherent safety and sufficient excess reactivity providing 120 effective full power days for experiments. Considering the requirements above, the reactive control system is designed to consist of 16 control rods distributed in the graphite reflector. Combining the large control rods worth about 18000–20000 pcm, molten salt drain supplementary means（-6980 to -3651 pcm） and negative temperature coefficient（-6.32 to -3.80 pcm/K） feedback of the whole core, the reactor can realize sufficient shutdown margin and safety under steady state. Besides, some main physical properties, such as reactivity control, neutron spectrum and flux, power density distribution, and reactivity coefficient,have been calculated and analyzed in this study. In addition, some special problems in molten salt coolant are also considered, including;Li depletion and tritium production.

引用

页码：131 / 139

页数：9

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