Zhiqiang WU, Jinsen XIE, Lei LOU, Pengyu CHEN, Tao LIU, Nianbiao DENG, Tao YU. Control rod strategy for long-term small rod-controlled pressurized water reactors[J]. NUCLEAR TECHNIQUES, 2024, 47(3): 030604
- NUCLEAR TECHNIQUES
- Vol. 47, Issue 3, 030604 (2024)
Fig. 1. Layout of core arrangement
Fig. 2. Partitioning of radial (a) and axial (b) burnup zones
Fig. 3. Flow chart of critical rod position-search burnup code
Fig. 4. Variation of keff with burnup
Fig. 5. Variation of control rod value with burnup
Fig. 6. Variation of FU with burnup
Fig. 7. Variations of AO and the critical rod position of control rods with burnup
Fig. 8. Comparison of thermal-flux distribution between ARO (a) mode and control rod operation (b) mode at 2 d
Fig. 9. Comparison of thermal-flux distribution between ARO mode (a) and control rod operation mode (b) at 290 d
Fig. 10. Comparison of thermal-flux distribution between ARO mode (a) and control rod operation mode (b) at 590 d
Fig. 11. Comparison of FU distribution between ARO mode (a) and control rod operation mode (b) at 290 d
Fig. 12. Comparison of FU distribution between ARO mode (a) and control rod operation mode (b) at 590 d
Fig. 13. Variation of the critical rod position of control rods with burnup under different strategies
Fig. 14. Variations of FU and its axial inhomogeneity (DFUUL) with burnup under different strategies
Fig. 15. Variations of AO with burnup under different strategies
Fig. 16. Variation of R-PPF with burnup under different strategies
Fig. 17. Variations of AO and R-PPF with burnup under the value-equivalent scheme
Fig. 18. Variations of the critical rod position of control rods with burnup under the value-equivalent scheme
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Table 1. Core parameters
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Table 2. Typical macro neutron-absorption cross sections of control rod materials (E=0.025 3 eV)
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Table 3. Reactivity and initial value of the control rod
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Table 4. Initial integral value of maximum value groups
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Table 5. Move-in/out strategy and material selection
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