BOILING-WATER REACTOR

PROBLEM TO BE SOLVED: To monitor the output of a reactor with economic efficiency and safety equal to a BWR currently operated.SOLUTION: In the boiling-water reactor constituted of three hexagonal fuel assemblies having fuel rods closely arranged and a Y shaped control rod having three wings so that...

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Bibliographische Detailangaben
Hauptverfasser:	HOSOI HIDEAKI, FUJIMOTO KIYOSHI, WATABIKI NAOHISA, HINO TETSUSHI, TAKAHASHI SHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS
Online-Zugang:	Volltext bestellen
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Zusammenfassung:	PROBLEM TO BE SOLVED: To monitor the output of a reactor with economic efficiency and safety equal to a BWR currently operated.SOLUTION: In the boiling-water reactor constituted of three hexagonal fuel assemblies having fuel rods closely arranged and a Y shaped control rod having three wings so that the intervals of the wings inserted between them are 120 degrees, respectively, a neutron instrumentation assembly consisting of a fixed neutron flux detector and a movable flux detector are arranged in a narrow space part including one of the tips of the control rod and surrounded by the three hexagonal fuel assemblies.EFFECT: The output of the reactor can be monitored with economic efficiency and safety equal to these of a BWR currently operated.SELECTED DRAWING: Figure 1 【課題】本発明では、このような課題を解決するために、現在運転中のＢＷＲと同等の経済性や安全性で、原子炉の出力監視を行うことを目的とする。【解決手段】本発明は、燃料棒が稠密配列された３つの六角形燃料集合体と、その間に挿入された翼の間隔がそれぞれ１２０度である３枚の翼を持つＹ字型制御棒で構成する沸騰水型原子炉において、制御棒の先端の１つを含む六角形燃料集合体3体で囲まれた狭い空間部に固定式中性子束検出器と移動式中性子束検出器よりなる中性子計装集合体を配置したことを特徴とする。【効果】本発明によれば、現在運転中のＢＷＲと同等の経済性や安全性で、原子炉の出力監視を行うことができる。【選択図】図１