1. Osaka University, Department of Nuclear Engineering 2-1 Yamadaoka, Suit a City, Osaka, Japan
2. Power Reactor and Nuclear Fuel Development Corporation O-arai Engineering Center, Heat Transfer Section 4002 Oarai-Machi, Higashi-Ibaraki-gun Ibaraki Prefecture, Japan
3. Mitsubishi Atomic Power Industries, Inc. 2-4-1 Shibakoen, Minato-kuf Tokyo, Japan
4. Power Reactor and Nuclear Fuel Development Corporation 1-9-13 Akasaka, Minato-ku, Tokyo, Japan