Effect of Uranium-Bearing Scale Deposits on Hre-2 Core Wall Temperature, Heat Flux, and Patch Temperature

Abstract

Calculations are presented to show the effect of uraniumbearing scale deposits on the HRE-2 core wall temperature, heat flux, and the temperature of patches proposed for sealing the holes of the HRE a 2 core vessel. Flow behavior in the HRE-2 core mockup with simulated patches installed and simulated corrosion pits drilled in the vessel wall was determined.A plausible mechanism was advanced to account for hot spots due to sedimentation of solids on metal surfaces projecting from the core wall. Patch designs with reduced. metal projections from the core wall are presented. NOTICEThis document contains information of a preliminary nature and was prepared primarily for internal use at the Oak Ridge Notional Laboratory. It is subiect to revi sion or correction and therefore does not represent a final report. The information is not to be abstracted, reprinted or otherwise given public dissemination without the approval of the ORNL potent branch, Legal and Information Control Department.