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:
Apr. 15, 1986
Filed:
Mar. 11, 1983
Hiroshi Rindo, Mito, JP;
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Abstract
An apparatus for detecting the location of a failed fuel assembly among a number of in-core fuel assemblies, which utilizes a combination of a tag gas system and a selector valve system. The fuel assemblies are divided into a plurality of groups and all the fuel assemblies in the same group are tagged with the same tag gas. Coolants flowing out from the respective fuel assemblies are individually sampled by sampling pipes and led into intermediate mixers wherein the coolants are mixed. The groups of fuel assemblies are mutually connected via the sampling pipes to the intermediate mixers such that each group of fuel assemblies has the sampling pipes extending therefrom and connected to each of the intermediate mixers. The group to which the failed fuel assembly belongs is identified by the tag gas system, and the selector valve system identifies which mixed coolant from the intermediate mixers contains fission products released from the failed fuel assembly.