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:
Jun. 11, 2013
Filed:
Jan. 27, 2010
Masatoshi Yamasaki, Osaka, JP;
Yasushi Hanayama, Osaka, JP;
Yasunori Ohoka, Osaka, JP;
Masashi Tsuji, Osaka, JP;
Yoichiro Shimazu, Osaka, JP;
Masatoshi Yamasaki, Osaka, JP;
Yasushi Hanayama, Osaka, JP;
Yasunori Ohoka, Osaka, JP;
Masashi Tsuji, Osaka, JP;
Yoichiro Shimazu, Osaka, JP;
Nuclear Fuel Industries, Limited, Tokyo, JP;
Abstract
The output of a nuclear reactor is increased by a predetermined magnitude, and the neutron beam is measured as time-series data. The temperature of the moderator in the reactor is acquired as time-series data. Time-series data on the reactivity is acquired from the time-series data on the neutron beam by the reverse dynamic characteristic method with respect to a one-point reactor kinetics equation. Time-series data on the fuel temperature of a predetermined average acquired by using the time-series data on the reactor output and a predetermined dynamic characteristic model is acquired. The reactivity feedback contribution component is determined by using the time-series data on the reactivity and the applied reactivity. The Doppler reactivity coefficient is determined by using the time-series data on the average temperature of the moderator in the reactor, the time-series data on the fuel temperature of the predetermined average, the isothermal temperature reactivity coefficient, and the reactivity feedback contribution component.