Analysis and Research of Criterion Limits of Hydrogen Absorption for Fuel Cladding Corrosion
There was no restriction on the failure behavior caused by fuel cladding corrosion in fuel rod design,which could lead to fuel cladding damage due to insufficient cladding strength.This article con-ducted extensive research on the limit standard of fuel cladding hydrogen corrosion for zirconium alloy cladding,as well as the associated oxide film thickness and cladding temperature.Relevant criteria re-search,limit estimation,and data analysis had been carried out.Finally,This article suggested that regula-tions should be made for the hydrogen content of the cladding,the thickness limit of the oxide film,or the corrosion depth in the limit values,and that the limits of different types should be coordinated and consist-ent,and provided that the limit values for the oxide film was 100 μm or corrosion depth criterion of the cladding was 11.3％.The limit values for the hydrogen absorption criterion of the cladding was 500 ppm.
fuel claddingcriterion limitsanalysis and research
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