[1F01-04] Exernal Hazard

[1F03] Research and Development of Margin Assessment Methodology of Decay Heat Removal Function against External Hazards

(17)Combination Hazard Curve Evaluation of Forest Fire and Thunder

*Yasushi OKANO¹, Hidemasa YAMANO¹ (1.Japan Atomic Energy Agency)

Keywords:SFR, External Hazard, Level 1 PRA, Margin evaluation, Forest fire, Thunder, Combinational hazard, Logic tree, Hazard curve

For an evaluation of a combinational hazard of forest fire and thunder, it is necessary to take into account not only the overlap occurrence frequency but also meteorological condition which effects on a forest fire intensity. In this study, the logic tree for a forest fire hazard curve evaluation was utilized to include these effects, and the hazard curve was evaluated for the combinational event of forest fire and thunder.