Proceedings of NTHAS2 : second Japan-Korea Symposium on Nuclear Thermal Hydraulics and Safety, October 15-18, 2000, Denki Bldg., Chuo-Ku, Fukuoka, Japan / sponsored by the Atomic Energy Society of Japan (AESJ), the Korean Nuclear Society (KNS) ; in cooperation with the Japan Atomic Industorial Forum, the Korean Atomic Industorial Forum ; organized by Thermal Hydraulics Division of AESJ, Nuclear Thermal Hydraulics Division of KNS.