[2G01-08] External Event PRA

[2G02] Application of Portfolio theory for balancing seismic risk profile of NPPs

(1)Proposal of balancing methodology

*Yasuki Ohtori¹, Sakai Toshiaki², Hitoshi muta¹ (1. TCU, 2. CRIEPI)

Keywords:risk profile, Balancing, seismic PRA, portfolio theory, nuclear power plant

As Budnitz(2016) pointed out that balancing the risk profile is important to improve the safety of nuclear power plants. This paper presents a methodology for balancing the seismic risk profile of nuclear power plants using portfolio theory used in financial engineering. The methodology is applied to a nuclear power plant model, and it is shown that uncertainty of core damage frequency can be reduced by balancing the risk profile.