Hitachi, Ltd.

Hitachi Engineering Co., Ltd.

Tomoko Sugi

Ryozo Tsuruoka

Tadakazu Nakayama

Shizuka Hirako

Toshihisa Tsukiyama

An apparatus for cleaning up reactor coolant includes a piping for taking out water in a reactor core, and this piping is provided separately from a primary loop recirculation piping and has its open end located at the bottom of a reactor pressure vessel. The taking-out piping extends upward from the open end within the reactor pressure vessel and extends through and outside of the side wall of the reactor pressure vessel. In a preferred form, the taking-out piping is provided near the highest position of its portion outside the reactor pressure vessel with a siphon brake valve.

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Katsuta, Japan

Tomoko Sugi