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          NRC Library  Document Collections  NUREG-Series Publications  Publications Prepared by NRC ContractorsInteraction of Zinc Vapor with Zircaloy and the Effect of Zinc Vapor on the Mechanical Properties of Zircaloy (NUREG/CR-6675)

On this page: Publication Information AbstractDownload complete document NUREG/CR-6675 (PDF - 2.47 MB)Publication Information **Manuscript Completed:** May 2000**Date Published:** June 2000 **Prepared by:** R.J. Schaefer, RJ. Fields, M.E. Williams National Institute of Standards and Technology Gaithersburg, MD 20899 C. Santos, Jr., NRC Project Manager **Prepared for:** Division of Engineering Technology Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission****Washington, DC 20555-0001 NRC Job Code Y6212 Availability Notice Abstract Spent fuel rods removed from reactor cores are loaded under water into steel casks, which are then removed from the water, vacuum dried, and welded closed for dry storage. In some cases, the inside of the steel casks has been coated with zinc paint to prevent corrosion during the under-water phase of this process, and concern has arisen that the zinc could react with the Zircaloy-4 cladding of the spent fuel, possibly leading to decreased mechanical strength. This project investigated the kinetics of the reaction between Zircaloy-4 and zinc vapor, and the mechanical properties of Zircaloy-4 which had been exposed to zinc vapor. 
      
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