Cutback sensitivity test for boron-free small modular PWR

2016 International Conference on New Energy and Future Energy System

Choe, J.^1 ; Shin, H.C.^2 ; Jeong, J.E.^2 ; Lee, D.^1

Department of Mechanical and Nuclear Engineering, Ulsan National Institute of Science and Technology, Ulsan

44919, Korea, Republic of^1

Core and Fuel Analysis Group, Korea Hydro and Nuclear Power Central Research Institute, Daejeon

34101, Korea, Republic of^2

关键词: Burnable absorber;    Code system;    Cycle length;    Enrichment rate;    Excess reactivity;    Power peaking factor;    Reactor core designs;    Sensitivity tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012017/pdf
DOI  :  10.1088/1755-1315/40/1/012017

来源: IOP

【 摘 要 】

A soluble boron-free small modular pressurized water reactor (SMPWR) uses burnable absorbers (BA) instead of soluble boron to reduce excess reactivity. As a consequence, the fuel cycle length can be shortened by the residual penalty of BA. This paper performs cutback sensitivity tests to extend the cycle length. The influence of the height of the cutback, of the235U enrichment rate, and of the BA material on the power peaking factor (Fq), the axial offset (AO) and the fuel cycle length is analyzed with the reactor core design system, CASMO-4E/SIMULATE-3 code system.