Patent
Reactor power control equipment and start-up range neutron flux monitor
Arita Setsuo,Ishii Yoshihiko,Sano Hiroki,Maruyama Hiromi,Fukuzaki Koji,Ishii Kazuhiko,Tokawa Yuichi,Fukazawa Yukihisa +7 more
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TLDR
In this article, the authors proposed a method to enable shortening a start-up time of a nuclear power plant by using the change in the cycle at the time of withdrawal of a control rod in a short time.Abstract:
PURPOSE:To enable shortening a start-up time of a reactor. CONSTITUTION:A start-up range neutron flux monitor 21 has reactor cycle computing means 8 and 9 which compute and output a reactor cycle. The reactor cycle computing means 8 and 9 have filters respectively. The time constant of the filter of the former is shorter than that of the latter. The reactor cycle outputted from the reactor cycle computing means 8 is used for determination of a scram. A reactor power control means 14 outputs a control rod withdrawal command, using the reactor cycle outputted from the reactor cycle computing means 9. Since a change in the reactor cycle at the time of withdrawal of a control rod can be reflected on an operation of the control rod in a short time, accordingly, an interval between operations for shutdown can be shortened and a startup time of a reactor can be shortened.read more
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Patent
Method and apparatus for moving nuclear fuel
David Joseph Kropaczek,Steven Barry Sutton,Christian Carlos Oyarzun,Carey Reid Merrit,John Dean Fuller,William Earl Ii Russell,Margaret Estelle Harding +6 more
TL;DR: The apparatus for creating and editing a nuclear reactor core template includes a graphical user interface and a processor controlling the graphical interface to allow a user to selectively populate a loading map with fuel bundles residing in at least one fuel pool as discussed by the authors.
Patent
Radiation output monitor
Mikio Izumi,Hideyuki Kitazono,Tatsuyuki Maekawa,Susumu Naito,Terutsugu Tarumi,晋 内藤,立行 前川,秀亨 北薗,輝次 垂水,幹雄 泉 +9 more
TL;DR: In this paper, the authors proposed to provide a highly reliable radiation output monitor by solving problems in the digital signal processing of output signals from a radiation detector installed in a nuclear power plant.
Patent
Method and device for recover facilitating of nuclear fuel from fuel pool
John Dean Fuller,Margaret Estelle Harding,David Joseph Kropaczek,Carey Reid Merrit,Christian Carlos Oyarzun,William Earl Ii Russell,Steven Barry Sutton,ウィリアム・アール・ラッセル，ザ・セカンド,キャリー・リード・メリット,クリスチャン・カルロス・オヤルズン,ジョン・ディーン・フラー,スティーブン・バリー・サットン,デビッド・ジョセフ・クロパチェク,マーガレット・エステル・ハーディング +13 more
TL;DR: In this article, a method and device for using nuclear fuel disposed in one or more of fuel pools, in a loading map for new cycling for a nuclear reactor is presented, which includes a graphical user interface and a processor for controlling the graphical interface to selectively populate the loading map, by the user, with fuel bundles existing in the at least one fuel pool.
Patent
Method and device for cold criticality test
TL;DR: In this article, a cold criticality test control unit, a neutron flux detector placed in a reactor, a front-end processor for amplifying signals from the detector and converting them from analog ones to digital ones, a digital low-pass filter 5 for removing high-frequency components of the signal from the front end processor, and a calculation result determination section 7 for comparing a rate of a change in the reactor cycle with a prescribed value.
Patent
Nuclear power plant nuclear neutron flux measurement circuit and measurement cabinet
TL;DR: In this article, a nuclear power plant nuclear neutron flux measurement circuit includes a detection module, a power module, fault monitoring module and a delay output module; when the power module stops outputting a first power source and a second power source, the fault monitoring unit sends a fault signal to the delay output unit, which outputs the fault signal.