抄録
The plant concept of 1, 700 MWe class next generation PWR (APWR+) has been established. This plant is developed as the improved version of APWR and is expected to be a main power generator since 2010s. The core consists of 257 17×17 fuel assemblies, which is the same as APWR. Although the fuel length was increased from 3.7m to 4.3m, the reactor vessel height was kept almost same as APWR by simplifying the core internal design. The safety systems are composed with active components as well as APWR, except that the systems were simplified by adopting heat removal through steam generators as a design basis.
In this report, the utility requirements, which were established prior to the design evaluation, and the plant concept to realize these requirements are shown.
