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Title: Enhanced Low-Enriched Uranium Fuel Element for the Advanced Test Reactor

Under the current US Department of Energy (DOE) policy and planning scenario, the Advanced Test Reactor (ATR) and its associated critical facility (ATRC) will be reconfigured to operate on low-enriched uranium (LEU) fuel. This effort has produced a conceptual design for an Enhanced LEU Fuel (ELF) element. This fuel features monolithic U-10Mo fuel foils and aluminum cladding separated by a thin zirconium barrier. As with previous iterations of the ELF design, radial power peaking is managed using different U-10Mo foil thicknesses in different plates of the element. The lead fuel element design, ELF Mk1A, features only three fuel meat thicknesses, a reduction from the previous iterations meant to simplify manufacturing. Evaluation of the ELF Mk1A fuel design against reactor performance requirements is ongoing, as are investigations of the impact of manufacturing uncertainty on safety margins. The element design has been evaluated in what are expected to be the most demanding design basis accident scenarios and has met all initial thermal-hydraulic criteria.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
OSTI Identifier:
1177227
Report Number(s):
INL/CON--14-33161
TRN: US1500155
DOE Contract Number:
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: 35. International Meeting on Reduced Enrichment for Research and Test Reactors. RERTR 2014 , Vienna (Austria), 12-16 Oct 2014
Research Org:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ENRICHED URANIUM; ATR REACTOR; FUEL PLATES; DESIGN; THERMAL HYDRAULICS; DESIGN BASIS ACCIDENTS; ZIRCONIUM; THICKNESS; ALUMINIUM; CLADDING; URANIUM BASE ALLOYS; MOLYBDENUM ALLOYS; BINARY ALLOY SYSTEMS; FOILS; MANUFACTURING; EVALUATION; PERFORMANCE; SLIGHTLY ENRICHED URANIUM ATR; ELF; LEU; monolithic; RERTR; U-10Mo