Mitsubishi Heavy Industries Limited

Shiro Kato

Hiroshi Sano

Takafumi Ogino

Yoshiyuki Tanigawa

A pH adjusting apparatus arranged above a water pit for refueling disposed in a reactor container that stores a nuclear reactor includes a pH adjuster, a basketthat contains the pH adjuster, and a basket housing containerthat houses the baskettherein and has formed therein an inlet through which a solvent for dissolving or diluting the pH adjuster flows in and an overflow pipethrough which a pH-adjusted solution generated by dissolving or mixing the pH adjuster in the solvent flows out to the water pit for refueling. Consequently, even if it is difficult to dispose the basketon a floor of the water pit for refueling, it is possible to suitably perform pH adjustment in the reactor container.

pH adjusting apparatus

A pH adjusting system includes a water pit for refuelingthat is disposed in a reactor container, which stores a reactor, and is capable of storing cooling water and a pH adjusting apparatusthat is disposed above the water pit for refuelingand houses a pH adjuster. The pH adjusting apparatuscauses a pH-adjusted solution generated by dissolving or mixing the pH adjuster to flow out to the water pit for refuelingbelow the pH adjusting apparatus. Consequently, even when it is difficult to dispose the pH adjusting apparatus on a floor of the water pit for refueling, it is possible to suitably perform pH adjustment in the reactor container

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Tokyo, Japan

Shiro Kato