Burn-up Function of Fuel Management Code for Aqueous Homogeneous Reactors and Its Validation

Fuel Management Code for Aqueous Homogeneous Reactors（FMCAHR） is developed based on the Monte Carlo transport method,to analyze the physics characteristics of aqueous homogeneous reactors.FMCAHR has the ability of doing resonance treatment,searching for critical rod heights,thermal hydraulic parameters calculation,radiolyticgas bubbles’ calculation and burn-up calculation.This paper introduces the theory model and scheme of its burn-up function,and then compares its calculation results with benchmarks and with DRAGON’s burn-up results,which confirms its burn-up computing precision and its applicability in the burn-up calculation and analysis for aqueous solution reactors.