[2D10-14] Environmental Safety Assessment and Radiation Protection

[2D12] Study of the level 3PRA method using WinMACCS

(3)Investigation for a change of a calculation result when using different source term.

*Masaharu Tsuzaki¹, Ryogo Kurokawa¹, Koichi Sada¹ (1. CRIEPI)

Keywords:Level 3 PRA, WinMACCS, severe accident, source term, protective measures

We investigate the characteristic and applicability to Japan of WinMACCS which is the newest level 3PRA calculation code that U.S. NRC developed. In this paper we report a difference of calculation result of early exposure when using two kinds of source terms. Moreover, we report the effect of protection measures on calculation result.