PALS combined with Charpy-V tests at WWER reactor pressure vessel steels

16th International Conference on Positron Annihilation

Slugen, V.^1 ; Kryukov, A.^2 ; Petriska, M.^1 ; Veterníková, J.^1 ; Sojak, S.^1 ; Sabelová, V.^1 ; Hinca, R.^1

Institute for Nuclear and Physical Engineering, Slovak University of Technology, Ilkovicova 3, 81219 Bratislava, Slovakia^1

European Commission, Joint Research Centre, Institute for Energy, PO Box 2, 1755 ZG Petten, Netherlands^2

关键词: Impurity content;    Irradiation-induced defects;    Long term study;    Micro-structural;    Optimal regions;    Radiation stability;    Reactor Pressure Vessel;    Reactor pressure vessel steels;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/443/1/012012/pdf
DOI  :  10.1088/1742-6596/443/1/012012

来源: IOP

【 摘 要 】

This paper presents results from our long-term studies of irradiated, commercially used WWER reactor pressure vessel steels. Results from Charpy-V tests and positron annihilation spectroscopy techniques are compared and discussed in details, having in mind actual state of art and other microstructural studies in this area. The optimal region for annealing of irradiation induced defects was analyzed. It was shown that WWER steel with low impurity contents has good radiation stability and operation these reactor pressure vessels could be extended beyond a design lifetime.