The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1994
Filed:
Oct. 15, 1991
Kenji Tominaga, Hitachi, JP;
Tetsuo Horiuchi, Hitachi, JP;
Tsuyoshi Niino, Hitachi, JP;
Shouichiro Kinoshita, Hitachi, JP;
Shozo Yamanari, Hitachi, JP;
Masanori Naitoh, Hitachi, JP;
Tohru Fukui, Hitachi, JP;
Michio Murase, Mito, JP;
Yoshiyuki Kataoka, Ibaraki, JP;
Masataka Hidaka, Katsuta, JP;
Isao Sumida, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A reactor containment facility having a reactor pressure vessel containing a core; a dry well in which the reactor pressure vessel is arranged; a suppression chamber holding suppression-pool water and forming above the suppression-pool water a wet well; and a plurality of vent pipes allowing the dry well to communicate with the suppression-pool water; a steel wall which is in contact with the suppression-pool water of the suppression chamber and which surrounds at least the pool water so as to form a containment vessel which houses the dry well and the suppression chamber; and an outer peripheral pool containing cooling water in contact with the outer peripheral surface of the steel wall. The facility further includes: a dividing structure for dividing the wet well of the suppression chamber into a first space which is in contact with the water surface of the suppression-pool water and a second space which is not in contact therewith; a first passage which allows the first space to communicate with the second space and which has an area smaller than that of the dividing device; and a cooling device for keeping the second space at a temperature lower than that of the first space.