Design features of Tsuruga 3 and 4 and the first APWR plant in Japan

The APWR is a light water reactor, which employs many innovations for improving safety, reliability and operability aspects. The main features of the design improvements of APWR are: flexible core design to meet future requirement of operation with mixed oxide fuel (MOX) and high burn up; reliability enhancements in reactor internals, steam generators and other key components; safety enhancements in engineered safeguard systems which increase redundancy, diversity and independence; improvements in plant operation by employing the latest I and C system. In addition to the improvements in core design, safety, reliability and operability, many economic challenges have been addressed in progressing the design work of Tsuruga 3 and 4. This report presents the design overview and approach of the economic challenges for Tsuruga 3 and 4 that will be the first units of APWR in Japan. (author)