BWR fuel element with improved resistance to pellet-cladding interaction and fretting

Only some of the fuel rods (3) of a BWR (Boiling Water nuclear Reactor) fuel element have liner cladding tubes. PREFERRED FEATURES:- Only the fuel rods in the control rod region (D) have liner cladding tubes, the other fuel rods having cladding tubes of a zirconium-tin-iron alloy of grain size below...

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Bibliographische Detailangaben
1. Verfasser:	GARZAROLLI, FRIEDRICH
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	Only some of the fuel rods (3) of a BWR (Boiling Water nuclear Reactor) fuel element have liner cladding tubes. PREFERRED FEATURES:- Only the fuel rods in the control rod region (D) have liner cladding tubes, the other fuel rods having cladding tubes of a zirconium-tin-iron alloy of grain size below 3 mu and average precipitate particle size 0.1-0.3 mu in the non-recrystallized condition. Um die Gefahr von Pellet-Cladding-Interaction-Defekten gering zu halten, ist in einem Brennelement (8B) ein Teil, z. B. in einem Bereich (6B) in Nähe eines Steuerstabes (4), der Brennstäbe (3) mit Liner-Hüllrohren versehen, der restliche Teil mit Hüllrohren ohne Liner.