[2J01-08] Dose Assessment

[2J06] Study on optimization method for contamination inspection of vehicles in nuclear emergency

(3) Verification of discriminative ability for contamination by the new set-up for portable radiation portal monitors for vehicles

*Hirokazu Hiraoka¹, Kouhei Kawasaki², Masanori Kimura¹, Orihiko Togawa¹, Saito Shota¹, Iwao Ezaki² (1. JAEA, 2. CTC)

Keywords:Nuclear emergency, Contamination inspection, Portable radiation portal monitor, Vehicle, Evacuation

In nuclear emergency, vehicles which evacuating inhabitants use be taken the contamination inspection. For the quick inspection, it seems that realization of simultaneous inspection of tires and wipers by portable radiation portal monitors for vehicles is necessary. In order to fulfill the simultaneous inspection, the authors develop the measuring method which is able to suitably distinguish and evaluate each contamination. Monte Carlo simulation showed ahead that the new set-up of detectors improves the discriminative ability for contamination. In this study, based on the simulation results, the authors attached radiation sources to a vehicle, and verified the ability by the new-setup. As a result, the ability improved compared to one of the usual method.