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:
Jul. 19, 2022
Filed:
Jan. 12, 2017
Hitachi-ge Nuclear Energy, Ltd., Hitachi, JP;
Satoshi Takeo, Hitachi, JP;
Akira Konoma, Hitachi, JP;
Akiyuki Tsuchiya, Hitachi, JP;
Koji Matsumoto, Hitachi, JP;
Takao Kondo, Hitachi, JP;
Yuji Honma, Hitachi, JP;
HITACHI-GE NUCLEAR ENERGY, LTD., Hitachi, JP;
Abstract
Provided is a control rod motion monitoring method and a control rod motion monitoring system, in which a control rod insertion in an entire core is monitored at all time during operation of a reactor and, when an abnormality occurs, a signal is issued to a countermeasure device that automatically starts operation and an alarm is issued to prompt operation of an operator. An LPRM detector in an LPRM assembly of the entire core is divided into four channels for each height; indicated values are averaged at all time; the average indicated value is compared with a set point; and a signal is issued to a countermeasure device when an abnormality occurs.