STP824

    Modeling of Zircaloy Stress-Corrosion Cracking: Texture Effects and Dry Storage Spent Fuel Behavior

    Published: Jan 1984


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    Abstract

    A phenomenological model has been developed for predicting iodine-induced stress-corrosion crack (SCC) initiation and growth in Zircaloy cladding. This model is capable of predicting various observed behaviors related to SCC.

    A recently developed submodel for predicting the effect of texture on SCC has been incorporated into the original stress-corrosion crack initiation and growth (SCCIG) model. It utilizes basal pole figure data. This allows predictions of a number of observed phenomena on the effect of texture on SCC. In the process the model helps to explain why texture has different apparent effects on Zircaloy SCC depending on the test conditions.

    The SCCIG model can also be used for predicting cladding SCC behavior under dry storage conditions. In this study the model has been used to predict the cladding SCC limiting temperature (SLT) for several specific fuel rod conditions.

    Keywords:

    Zircaloy, iodine, stress-corrosion cracking, modeling, texture, initiation, growth, dry storage, temperature


    Author Information:

    Tasooji, A
    Post-doctoral research affiliate and professor (research), Stanford University, Stanford, Calif

    Einziger, RE
    Senior scientist, Westinghouse Hanford Co., Richland, Wash.

    Miller, AK
    Post-doctoral research affiliate and professor (research), Stanford University, Stanford, Calif


    Paper ID: STP34497S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP34497S


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