Criticality safety analysis of nuclear fuel storage of molten salt reactor

Zhen YANG; Zhimin DAI; Zhangzhong YANG; Yang ZOU

doi:10.11889/j.0253-3219.2024.hjs.47.080606

Journals >NUCLEAR TECHNIQUES >Volume 47 >Issue 8 >Page 080606 > Article

NUCLEAR TECHNIQUES
Vol. 47, Issue 8, 080606 (2024)

Criticality safety analysis of nuclear fuel storage of molten salt reactor

Zhen YANG^1,2,3, Zhimin DAI^1,*, Zhangzhong YANG³, and Yang ZOU¹

Author Affiliations

¹Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³North-Western China Regional Office of Nuclear and Radiation Saftety Inspection, National Nuclear Safety Administration, Lanzhou 730020, China

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DOI: 10.11889/j.0253-3219.2024.hjs.47.080606 Cite this Article

Zhen YANG, Zhimin DAI, Zhangzhong YANG, Yang ZOU. Criticality safety analysis of nuclear fuel storage of molten salt reactor[J]. NUCLEAR TECHNIQUES, 2024, 47(8): 080606 Copy Citation Text

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Fig. 1. Diagram of cylindrical fuel salt

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Fig. 2. Trend of the relationship between the quality of cylindrical fuel salt and k_eff in a dry environment

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Fig. 3. Trend of the relationship between the quality of cylindrical fuel salt and k_eff in a flooded environment

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Fig. 4. Trend of the relationship between the quality of spheroidal fuel salt and k_eff in a flooded environment

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核素 Nuclide	F	Li	Be	Zr	U	²³⁵U	²³⁸U
配比 Proportion	1.468	0.65	0.291	0.05	0.009	0.001 818 33	0.007 181 66
原子量 Atomic weight	18.998	7.016	9.012	91.224	237.394	235.044	238.051
核子密度 Nuclear density / m^-3	4.785×10²⁸	2.12×10²⁸	9.49×10²⁷	1.63×10²⁷	2.93×10²⁶	6.59×10²⁵	2.28×10²⁶

Table 1. MSRE fuel salt nuclide ratio

条件差异 Conditional differences	无水淹 No flooding	水淹 Flooding
考虑容器壁 Consider container walls	0.668 89(±0.000 59)	0.706 13(±0.000 62)
不考虑容器壁 Not considering container walls	0.593 31(±0.000 52)	0.887 46(±0.000 78)

Table 2. The effect of container wall on effective proliferation coefficient

核素 Nuclide	F	Li	Be	⁹⁰Zr	⁹¹Zr	⁹²Zr	⁹⁴Zr	⁹⁶Zr	²³⁵U	²³⁸U
配比 Proportion	1.468	0.65	0.291	0.026 1	0.005 6	0.008 5	0.008 4	0.001 3	0.001 8	0.007 2
核子数 Nucleon number	19	7	9	90	91	92	94	96	235	238

Table 3. MSRE fuel salt nuclide ratio and code

核素 Nuclide	H	O
配比 Proportion	-0.111 894	-0.888 106
核子数 Nucleon number	1	16

Table 4. Nuclide ratio and code of water

Zhen YANG, Zhimin DAI, Zhangzhong YANG, Yang ZOU. Criticality safety analysis of nuclear fuel storage of molten salt reactor[J]. NUCLEAR TECHNIQUES, 2024, 47(8): 080606

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