RERTR-13 Irradiation Summary Report

Abstract

SUMMARYThe Reduced Enrichment for Research and Test Reactor (RERTR) experiment RERTR-13 was designed to assess performance of different types of neutron absorbers that can be potentially used as burnable poisons in the low enriched uranium-molybdenum based dispersion and monolithic fuels. The following report summarizes the life of the RERTR-13 experiment through end of irradiation, including as-run neutronic analysis results, thermal analysis results and hydraulic testing results.ii CONTENTS

Study of the Stability of Highly Oxidized Metals (Ir, Ti, Ta, Sn) in Ethanol-Water and Isopropanol-Water Dispersions Previous to Epd

“…[1][2] IrO 2 , Ta 2 O 5 , TiO 2 and SnO 2 powders were used in this research, which would be considered the active catalysts for a dimensional stable anodes, DSAs. [3][4][5][6][7][8][9][10][11] To ensure a large catalytic surface area, the active particles should be dispersed on an inert support. The support of a DSA should be a porous, inert body that holds its shape, dimensions and chemical integrity during the catalytic process, such as titanium.…”

“…The support of a DSA should be a porous, inert body that holds its shape, dimensions and chemical integrity during the catalytic process, such as titanium. [3][4][5][6][7][8][9][10][11] Dispersions were prepared with powders and reagents as received (from Alfa Aesar). The powders were suspended in the molar ratios previously reported [9] , in 100 mL solutions of ethanol (EtOH) or isopropanol (IPA) with water (10:90 % by vol.).…”

“…[3][4][5][6][7][8][9][10][11] Dispersions were prepared with powders and reagents as received (from Alfa Aesar). The powders were suspended in the molar ratios previously reported [9] , in 100 mL solutions of ethanol (EtOH) or isopropanol (IPA) with water (10:90 % by vol.). Typically 0.018 g, 0.640 g, 0.916 g and 0.916 g of IrO 2 , Ta 2 O 5 , SnO 2 and TiO 2 powders, respectively, were dispersed in 100 mL of the solution with 0.4 g/L of hexadecyl-trimethylammonium bromide (CTAB).…”