[3L01-04] Evaluation of Dose Rate Distribution and Search for Fuel Debris Submerged in Water

[3L02] Technology Development to Evaluate Dose Rate Distribution and to Search for Fuel Debris Submerged in Water for Decommissioning of Fukushima Daiichi Nuclear Power Station

(5)Prediction of Dose Rate Distribution in Primary Containment Vessel

*Keisuke Okumura¹, Eka Sapta Riyana¹, Wakaei Sato², Hirobumi Maeda², Jun-ichi Katakura³ (1. JAEA, 2. NESI, 3. NUT)

Keywords:Fukushima Daiichi Nuclear Power Station, Dose Rate Distribution, Primary Containment Vessel, PHITS

A three-dimensional dose rate distribution in the primaly containment vessel of the unit-1 of Fukushima Daiichi Nuclear Power Station was predicted using the PHITS code based on the results of fuel burnup calculation, activation calculation of structural materials, internal investigations and accident progression analysis by IRID.