[1] Bukharin O. Russia's nuclear icebreaker fleet[J]. Science & Global Security, 14, 25-31(2006).

[3] Petrunin V V, Fadeev Y P, Pakhomov A N et al. Conceptual design of small NPP with RITM-200 reactor[J]. Atomic Energy, 125, 365-369(2019).

[4] Lezani van der Merwe, Chang Joo Hah. Reactivity balance for a soluble boron-free small modular reactor[J]. Nuclear Engineering and Technology, 50, 648-653(2018).

[5] Lee Chungchan, Dae-Hyun Hwang, Sung-Quun Zee et al. Nuclear and thermal hydraulic design characteristics of the SMART core[C], 15-19(2003).

[6] Choe J, Zheng Y Q, Lee D et al. Boron-free small modular pressurized water reactor design with new burnable absorber[J]. International Journal of Energy Research, 40, 2128-2135(2016).

[7] Carelli D, Ingersoll D T[M]. Handbook of small modular nuclear reactors(2021).

[8] Mart J, Klein A, Soldatov A. Feasibility study of a soluble boron–free small modular integral pressurized water reactor[J]. Nuclear Technology, 188, 8-19(2014).

[9] Jang J, Choe J, Choi S et al. Conceptual design of long-cycle boron-free small modular pressurized water reactor with control rod operation[J]. International Journal of Energy Research, 44, 6463-6482(2020).

[10] Diakov A C, Dmitriev A M, Kang J et al. Feasibility of converting Russian icebreaker reactors from HEU to LEU fuel[J]. Science & Global Security, 14, 33-48(2006).

[11] LI Leiming, JIANG Shuyi, CHEN Zhenping et al. Mesh-based activation analysis for structural materials in nuclear reactor[J]. Nuclear Techniques, 45, 080601(2022).

[12] Kim K S. Specification for the VERA depletion Benchmark suite[R](2015).

[13] Romano P K, Horelik N E, Herman B R et al. OpenMC: a state-of-the-art Monte Carlo code for research and development[J]. Annals of Nuclear Energy, 82, 90-97(2015).

[14] SHEN Zhirui, SUN Qizheng, HE Donghao et al. Comparison and verification of NECP-X and OpenMC using high-fidelity BEAVRS benchmark models[J]. Nuclear Techniques, 45, 010602(2022).

[15] SU Shi, XIE Qin, CHEN Zhenping et al. Compiling validity and critical benchmark verification based on OpenMC execution code[J]. Nuclear Techniques, 40, 100501(2017).

[16] HONG Shuang, YANG Yongwei, ZHANG Lu et al. Fabrication and validation of multigroup cross section library based on the OpenMC code[J]. Nuclear Techniques, 40, 040502(2017).

[17] Risovany V D, Varlashova E E, Suslov D N. Dysprosium titanate as an absorber material for control rods[J]. Journal of Nuclear Materials, 281, 84-89(2000).

[18] YU Shihe, YAN Rui, JI Ruimin et al. Layout design and physical effect analysis of control rod in PB-FHR[J]. Nuclear Techniques, 41, 010605(2018).

[19] Kennard M W, Harbottle J E. LWR control assembly designs: a historical perspective[C], 7-31(2000).

[20] LIU Yong, LI Mancang, YU Yingrui et al. Burnup analysis of candidate materials for accident tolerant fuel control rod[J]. Modern Applie Physics, 12, 81-85(2021).