Patent Number: 8,817,941

Title: Pressurized water reactor plant

Abstract: According to an embodiment, a pressurized water reactor plant has a primary system which includes: a reactor vessel for housing a reactor core which is cooled by a primary coolant, a single steam generator, a hot leg pipe for connecting the reactor vessel and the steam generator, cold leg pipes, at least two primary coolant pumps, and a pressurizer for pressurizing the primary coolant pressure boundary in which the primary coolant flows. The plant also has: a passive cooling and depressurization system which is a primary depressurization means for equalizing the primary system pressure to the secondary system pressure at the time of a tube rupture accident of the steam generator, and a reactor containment vessel containing the primary system and cooling the primary system by air cooling. Thus, a compact pressurized water rector with high economic efficiency, safety, and reliability can be provided.

Inventors: Sato; Takashi (Kanagawa, JP), Hashimoto; Kazunori (Kanagawa, JP), Oikawa; Hirohide (Kanagawa, JP), Fujiki; Yasunobu (Kanagawa, JP), Akinaga; Makoto (Kanagawa, JP), Sato; Hisaki (Kanagawa, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: G21C 9/004 (20060101); G21C 15/18 (20060101); G21C 15/00 (20060101); G21C 9/00 (20060101)

Expiration Date: 8/26/12018