[2G09-13] PRA Application

[2G09] Feature evaluation of radiation exposure in vent scenarios with FCVS

*Kodai Wadayama¹, Ryohei Ichikawa¹, Retsu Kojo¹, Chihiro Suzuki¹ (1. NRA)

Keywords:Vent, FCVS, noble gas, Radiation exposure, cloud shine, internal exposure, ground shine

Exposure dose for each exposure pathway in the vent scenarios with filter vent system was evaluated and a trial analysis was conducted in order to understand characteristics of radiation exposure by comparing the case of primary containment vessel (PCV) leak scenario and vent scenarios. In the case of PCV leak scenario, internal exposure was the main exposure pathway, while in the case of vent scenarios, cloud shine was the main exposure pathway when considering scenario which this study focused on.