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Modelling of Xe-135m for Evaluation of the CANDU6 Power Coefficient of Reactivity


Documents: Full paper available in Conference Proceedings.
 
Date: Monday October 19
Time:13:00 - 13:25
 
Session:1A2: Modelling & Simulation I
 
Authors: Jaeha Kim (Korea Advanced Institute of Science and Technology, Korea)
Yonghee Kim (Korea Advanced Institute of Science and Technology, Korea)
Kwangsoo Kim (Korea Hydro & Nuclear Power Co., Korea)
Abstract:

There was an experimental evaluation of the PCR of a CANDU6 reactor in Korea in 2012. In the assessment, the PCR was evaluated by a methodology which requires the estimation of the reactivity variation due to Xe, liquid zone controller (LZC), etc. Unlike the conventional Xe analysis, Xe-135m was also considered in this work to estimate the total Xe worth during transient. The impact of Xe-135m on the experimental evaluation of CANDU6 PCR was evaluated based on the Xe-135m cross section data of TENDL-2014. As a result, the evaluated PCR was reduced by about 0.2 pcm/%P due to the consideration of Xe-135m.

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