[KSCI] Korea Science Citation Index Service

Neutron Spectrum Effects on TRU Recycling in Pb-Bi Cooled Fast Reactor Core

Kim Yong Nam (Hanyang University)
Kim Jong Kyung (Hanyang University)
Park Won Seok (Korea Atomic Energy Research Institute)

Publication Information

Nuclear Engineering and Technology / v.35, no.4, 2003 , pp. 336-346 More about this Journal

Abstract

This study is intended to evaluate the dependency of TRU recycling characteristics on the neutron spectrum shift in a Pb-Bi cooled core. Considering two Pb-Bi cooled cores with the soft and the hard spectrum, respectively, various characteristics of the recycled core are carefully examined and compared with each other. Assuming very simplified fuel cycle management with the homogeneous and single region fuel loading, the burnup calculations are performed until the recycled core reached to the (quasi-) equilibrium state. The mechanism of TRU recycling toward the equilibrium is analyzed in terms of burnup reactivity and the isotopic compositions of TRU fuel. In the comparative analyses, the difference in the recycling behavior between the two cores is clarified. In addition, the basic safety characteristics of the recycled core are also discussed in terms of the Doppler coefficient, the coolant loss reactivity coefficient, and the effective delayed neutron fraction.

Keywords

TRU recycling; Pb-Bi cooled core; burnup reactivity; doppler effect; coolant loss effect; effective delayed neutron fraction;

Citations & Related Records

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