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A Proposed Regulatory Guide Basis for Spent Fuel Decay Heat

by O. W. Hermann, Oak Ridge Natl Lab, Oak Ridge, United States,
C. V. Parks, Oak Ridge Natl Lab, Oak Ridge, United States,
J. P. Renier, Oak Ridge Natl Lab, Oak Ridge, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991

Abstract:

A proposed revision to Regulatory Guide 3.54, 'Spent Fuel Heat Generation in an Independent Spent Fuel Storage Installation' has been developed for the U.S. Nuclear Regulatory Commission. The proposed revision includes a data base of decay heat rates calculated as a function of burnup, specific power, cooling time, initial fuel ²³⁵U enrichment, and assembly type (i.e., PWR or BWR). Validation of the calculational method was done by comparison with existing measured decay heat rates. Procedures for proper use of the data base, adjustment formulae accounting for effects due to differences in operating history and initial enrichment, and a defensible safety factor were derived.

Subject Headings: Energy storage | Nuclear power | Fuels | Databases | Decomposition | Heat transfer | Energy consumption

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