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:
Nov. 22, 1983
Filed:
Aug. 15, 1980
Shozo Saito, Hitachi, JP;
Takeshi Suzumura, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method and an apparatus for detecting failure of nuclear fuel by means of a multi-handle automatic sipper, which comprises a shipper capping operation of mounting a sipper cap of the apparatus for detecting failure of nuclear fuel on the top part of fuel assemblies, an isolation operation of supplying air into the cap after completion of sipper capping operation, thereby forming an air layer, and isolating the fuel assemblies to be detected from other fuel assemblies, a soaking operation of keeping the fuel assemblies in the isolated state for a predetermined period of time, a cell water removal operation of discharging water from system, and a sampling operation of introducing a predetermined amount of cooling water in the fuel assemblies to a sample water receptacle, the operations being provided in sequence, and other operations being carried out in parallel with the aforementioned operations.