Hitachi, Ltd.

Atsuo Yamanouchi

Motoaki Utamura

Yasuhiro Masuhara

Masanori Naitoh

Koichi Kotani

A nuclear reactor start-up method of starting up a boiling water reactor which is in the cold shut-down state. The method includes

Nuclear reactor start-up method

An apparatus for purifying sodium by electrically removing oxygen combined with liquid sodium from the liquid sodium, which comprises a liquid sodium to be purified and a reducing agent, the liquid sodium and the reducing agent being partitioned by a wall of solid electrolyte, a negative electric potential and a positive electric potential being applied to the liquid sodium side to be purified and the reducing agent side, respectively, whereby the combined oxygen is passed through the wall of solid electrolyte in a form of oxygen ion, O.sup.-.sup.-, and the liquid sodium is purified.

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Hitachi, Japan

Atsuo Yamanouchi