Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (5): 311-315 doi: 10.13538/j.1001-8042/nst.22.311-315

• NUCLEAR ENGINEERING • Previous Articles     Next Articles

IRIS reactor core with thorium fuel

Alrwashdeh MOHAMMAD YU Ganglin WANG Kan   

  1. Department of Engineering physics,Tsinghua University
Alrwashdeh MOHAMMAD, YU Ganglin, WANG Kan. IRIS reactor core with thorium fuel.Nuclear Science and Techniques, 2011, 22(5): 311-315     doi: 10.13538/j.1001-8042/nst.22.311-315


This work is aimed at running the first IRIS reactor core with mixed thorium dioxide fuel(ThO_2-UO_2 and ThO_2-PuO_2).Calculations are performed by using Dragon 4.0.4 and Citation codes.The results show the multiplication factor(K_(eff)) for central and peripheral assemblies as a function of burnup.To ensure the proliferation resistance,the value of ~(235)U enrichment is < 20%.The K_(eff) is calculated using Dragon 4.0.4 for a single fuel rod and the model developed to fuel assembly,while the whole core was calculated using Citation code.For a fuel burnup,the use of increased enrichment fuel in the IRIS core leads to high reserve of reactivity,which is compensated with an integral fuel burnable absorber.The self-shielding of boron is in an IRIS reactor fuel.The effect of increased enrichment to the burn-up rates,and burnable poison distribution on the reactor performance,are evaluated.The equipment used in traditional light water reactors is evaluated for designing a small unit IRIS reactor.

Key words: Long life reactor, High burnup, Burnable absorber