Design concept of a small nuclear reactor for large-diameter NTD-Si using a conventional PWR full-length fuel assembly

作者：Munkhbat Byambajav^*; Obara Toru

来源：Journal of Nuclear Science and Technology, 2012, 49(5): 535-543.

DOI：10.1080/00223131.2012.677132

• neutron transmutation doping
• NTD-Si
• PWR fuel assembly
• burnable poison
• uniform irradiation condition
• MVP/GMVP

A design concept for a small nuclear reactor dedicated to large-diameter neutron transmutation doping silicon (NTD-Si) is proposed. Conventional PWR (Pressurized Water Reactor) full-length fuel assembly is used to assure stable and reliable supply of fuel. Criticality, neutron transportation, and core burn-up calculations are performed using the MVP/GMVP II code and MVP-BURN code. The calculation results show that the proposed reactor can be critical over 18 years, and excess reactivity can be suppressed by a combination of Gd2O3 burnable poison and soluble boron. Preliminary steady-state single-channel thermal hydraulic analysis showed that heat removal from core is possible under 1 atm operating pressure. Si ingots up to 30 cm in diameter can be irradiated in the reactor irradiation channels, and the uniform irradiation condition can be achieved for a large-diameter Si ingot.

• 出版日期2012-5