[1A06-13] Contamination Measurement Techniques

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[1A10] Study on the Estimation Method of the Contamination Distribution of a Shield Plug Bottom in TEPCO Fukushima Daiichi Power Plant Unit 2

*Ikuo Kanno¹, Keisuke Okumura¹, Taichi Matsumura¹, Eka Sapta Riyana¹, Kenichi Terashima¹, Masahiro Sakamoto¹ (1. Japan Atomic Energy Agency)

Keywords:

Gamma-ray pinhole camera,Contamination distribution at the bottom of shield plug

We have developed a method for estimating the Cs-137 contamination distribution behind a constant thickness shield by a gamma-ray pinhole camera. This method is useful for obtaining the contamination distribution at the bottom of the shield plug in TEPCO Fukushima Daiichi Power Plant Unit 2.