Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
Online ISSN : 2186-5256
Print ISSN : 0004-7120
ISSN-L : 0004-7120
Recent LWR Fuel Performance in U.S.
Hironori ECHIGOYA, Satoru KAWASAKI, Yutaka KINOSHITA, Hiroyuki KUBOTA, Takao KONISHI, Takayoshi YASUDA, Tsuneyasu YAMANAKA
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Keywords: BWR type reactors, PWR type reactors, CANDU, nuclear fuels, fuel pellets, failure, hydridin, PCI, fuel-cladding interactions, corrosion, collapsing, fretting, debris
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1993 Volume 35 Issue 8 Pages 718-724

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Abstract
The main causes for the fuel failure in the Light Water Reactor (PWR, BWR) are reviewed. In the 1970's they were hydriding, pellet-clad interaction (PCI), corrosion, clad collapsing and fretting. Counter measures, such as the improvement of design and manufacturing process and the introduction of operation guidelines were taken so that the number of fuel failures decreased drastically. Fuel failures observed in U.S. from 1980's to date have mainly been due to debris-induced fretting in PWR and Crud Induced Localized Corrosion (CILC) in BWR. The continuous effort to take an appropriate counter measure against these failures has been made so that the number of failures is decreased.
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