Development on radiation damage calculation method for HTGR in-core structural material

Fukaya, Yuji   ; Goto, Minoru  ; Shibata, Taiju 

A study on radiation damage calculation method for in-core structural material of HTGR had been performed. Firstly, a theory and a calculation method for radiation damage were investigated. Secondly, a DPA cross-section calculation method using NJOY, which is the typical reactor constants generation code, was established. Moreover, DPA calculation method was established. To evaluate these evaluations simply, calculation method was developed including the function of NPRIM which includes NJOY code as a solver and was developed in previous study. In addition, necessary items were identified to improve the method for accuracy.