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:
Sep. 20, 1994
Filed:
Apr. 28, 1993
Hitachi, Ltd., Tokyo, JP;
Abstract
A reactor cooling system for boiling water reactors comprises a pressure vessel containing a core of a boiling water reactor, a static core injection system including a first water source installed at a position higher than the pressure vessel and a first core injection line communicating the first water source with the pressure vessel, and having a capacity not less than 100% of the capacity necessary to maintain submergence of the core in the pressure vessel, and a plurality of dynamic core injection systems each including a second water source, a second core injection line communicating the second water source with the pressure vessel, and a pump provided in the second core injection line, and each having a capacity not less than 50 % of the capacity necessary to maintain submergence of the core in the pressure vessel. Even when the plurality of dynamic core injection systems fail to inject water in a satisfactory manner, the static core injection system having capacity not less than 100% of the capacity necessary to maintain the submergence of the core is operated to start water injection, whereby the submergence of the core can be surely achieved.