Observation of dummy assembly made of the tight-lattice core using the X-ray CT technique

Katsuyama, Kozo ; Nagamine, Tsuyoshi; Matsumoto, Shinichiro

In order to contribute to the development of cooling technique for the Tight-Lattice Core used in Reduced-Moderation Water Reactor, which was mainly studied in Japan Atomic Energy Research Institute, the inner condition of Dummy Assembly made of the Tight-Lattice Core was observed with X-ray Computer Tomography (CT) technique. In the observation using X-ray CT, the non-destructive examination technique for the un-irradiated specimens was also established. The results obtained from this study are following.