The Application of U-Np Fuel and6Li Burnable Poison for Space Reactors

2003 ◽  
Vol 144 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Konstantin L. Nikitin ◽  
Masaki Saito ◽  
Vladimir V. Artisyuk
Keyword(s):  
Burnable Poison ◽  
Space Reactors

Application of the Burnable Poison in the Design of Space Nuclear Reactor

2017 ◽  
Author(s):  
Wang SanBing ◽  
Xie Qilin ◽  
He ChaoHui
Keyword(s):  
Neutron Spectrum ◽  
Nuclear Reactor ◽  
Operation Time ◽  
Life Time ◽  
Stable Operation ◽  
Burnable Poison ◽  
Calculation Results ◽  
Homogeneous Reactor ◽  
In The Beginning ◽  
Criticality Safety

The previous research showed that the application of burnable poison was helpful to improve the criticality safety of space nuclear reactor (SNR). In order to analyze the worth of burnable poison in the SNR’s design, a model of homogeneous reactor had firstly been built based on the design of SAFE400. Comparing its difference with the real design of SAFE400 through criticality calculation, the precise of our model had been verified. Then the influence of the criticality parameters and immersion accident character parameters for this model had been analyzed for the application of the different burnable poisons (such as samarium, europium or gadolinium). The calculation results had shown that the application of the most of the burnable poisons would soften the neutron spectrum and induced a decrement of reactor’s keff in the beginning of life. However, the immersion accident analysis gave out another result that only the reactor using gadolinium could ensure the criticality safety of reactor after it made its initial keff equal with the design value. Meanwhile, compared with the initial design of SAFE400, in one hand, the burn-up results had shown that the decrement of homogeneous reactor’s reactivity using gadolinium as burnable poison was deceased after the 10 years full power operation; in other hand, its neutron spectrum became more softer with the operation time; and what’s more important, the amount of the burnable poison was not decreased with burn-up during its service life-time. These results implied that the application of the burnable poison (especially for gadolinium) could highly ensure the criticality safety and stable operation of SNR.

A potential fission electric cell for space reactors

1988 ◽  
Vol 12 (1) ◽  
pp. 155-163 ◽  
Author(s):  
I. Ursu ◽  
L. Schächter ◽  
A. L. I. B??kdescu-Singureanu
Keyword(s):  
Space Reactors

Tritium Analysis of Irradiated Burnable Poison Rods

1982 ◽  
Vol 59 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Filippo D’Annucci ◽  
Elma Beth S. Pardue ◽  
Wilfried Rommelaere ◽  
Günter Bäro
Keyword(s):  
Burnable Poison

Improvement of power coefficient by using burnable poison in the CANDU reactor

2011 ◽  
Vol 241 (5) ◽  
pp. 1565-1578 ◽  
Author(s):  
Gyuhong Roh ◽  
Yonghee Kim ◽  
Nam Zin Cho
Keyword(s):  
Power Coefficient ◽  
Burnable Poison

scholarly journals Using the Time-Correlated Induced Fission Method to Simultaneously Measure the235U Content and the Burnable Poison Content in LWR Fuel Assemblies

2018 ◽  
Vol 203 (1) ◽  
pp. 34-47
Author(s):  
M. A. Root ◽  
H. O. Menlove ◽  
R. C. Lanza ◽  
C. D. Rael ◽  
K. A. Miller ◽  
...  
Keyword(s):  
Burnable Poison ◽  
Fuel Assemblies ◽  
Induced Fission

Neutronic Study of Burnable Poison Materials and Their Alternative Configurations in Fully Ceramic Microencapsulated Loaded Pressurized Water Reactor Fuel Assembly

2018 ◽  
Vol 4 (4) ◽  
Author(s):  
Muhammad Qasim Awan ◽  
Liangzhi Cao ◽  
Hongchun Wu ◽  
Chuanqi Zhao
Keyword(s):  
Life Cycle ◽  
Light Water Reactors ◽  
Pressurized Water Reactor ◽  
Pressurized Water ◽  
Burnable Poison ◽  
Attractive Option ◽  
Plant Operations ◽  
Water Reactors ◽  
Control Rods ◽  
Double Heterogeneity

Use of FCM fuel in light water reactors is an attractive option for existing and future generations of these reactors to make them accident tolerant in nature. This work focuses on the neutronic study of the use of burnable material in various configurations to control the excess reactivity and to keep the moderator temperature coefficient of reactivity (MTC) feedback negative for entire cycle length. Erbia and gadolinia, two conventional materials are used in three different configurations including quadruple isotropic (QUADRISO), bi-isotropic (BISO), and Matrix Mix forms. The results obtained from the implicit random treatment of the double heterogeneity of tri-structural isotropic (TRISO), QUADRISO, and BISO particles show that the erbia is the best material to be used in QUADRISO and Matrix Mix configurations with lowest reactivity swing for the life cycle and residual poison well below 0.5%. Gadolinia is usable in FCM environment only in the BISO form where enhanced self-shielding controls the depletion performance of the material. The gadolinia has almost zero residual poison at end of cycle (EOC); however, it has relatively large reactivity swing, which will need more micromanagement of the control rods during the plant operations. At the beginning of cycle (BOC), erbia-loaded assemblies have shown an increase in negative value of MTC compared with reference due to presence of resonance peak in erbium near 1 eV. The finally recommended material-configuration combinations have shown the excess reactivity containment in desired manner with good depletion performance and negative feedback of the MTC for life cycle.

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