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Title: Rate Theory Modeling and Simulation of Silicide Fuel at LWR Conditions

Abstract

As a promising candidate for the accident tolerant fuel (ATF) used in light water reactors (LWRs), the fuel performance of uranium silicide (U 3Si 2) at LWR conditions needs to be well understood. In this report, rate theory model was developed based on existing experimental data and density functional theory (DFT) calculations so as to predict the fission gas behavior in U 3Si 2 at LWR conditions. The fission gas behavior of U 3Si 2 can be divided into three temperature regimes. During steady-state operation, the majority of the fission gas stays in intragranular bubbles, whereas the dominance of intergranular bubbles and fission gas release only occurs beyond 1000 K. The steady-state rate theory model was also used as reference to establish a gaseous swelling correlation of U 3Si 2 for the BISON code. Meanwhile, the overpressurized bubble model was also developed so that the fission gas behavior at LOCA can be simulated. LOCA simulation showed that intragranular bubbles are still dominant after a 70 second LOCA, resulting in a controllable gaseous swelling. The fission gas behavior of U 3Si 2 at LWR conditions is benign according to the rate theory prediction at both steady-state and LOCA conditions, which providesmore » important references to the qualification of U 3Si 2 as a LWR fuel material with excellent fuel performance and enhanced accident tolerance.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Engineering Division
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States). Fuel Modeling and Simulation
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE). Nuclear Energy Advanced Modeling and Simulation (NEAMS)
OSTI Identifier:
1327817
Report Number(s):
ANL/NE-16/13
130024; TRN: US1700324
DOE Contract Number:
AC02-06CH11357
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; URANIUM SILICIDES; ACCIDENT-TOLERANT NUCLEAR FUELS; LOSS OF COOLANT; FISSION PRODUCTS; DENSITY FUNCTIONAL METHOD; REACTOR ACCIDENT SIMULATION; STEADY-STATE CONDITIONS; WATER MODERATED REACTORS; BUBBLES; SWELLING; WATER COOLED REACTORS; PERFORMANCE; FISSION PRODUCT RELEASE

Citation Formats

Miao, Yinbin, Ye, Bei, Hofman, Gerard, Yacout, Abdellatif, Gamble, Kyle, and Mei, Zhi-Gang. Rate Theory Modeling and Simulation of Silicide Fuel at LWR Conditions. United States: N. p., 2016. Web. doi:10.2172/1327817.
Miao, Yinbin, Ye, Bei, Hofman, Gerard, Yacout, Abdellatif, Gamble, Kyle, & Mei, Zhi-Gang. Rate Theory Modeling and Simulation of Silicide Fuel at LWR Conditions. United States. doi:10.2172/1327817.
Miao, Yinbin, Ye, Bei, Hofman, Gerard, Yacout, Abdellatif, Gamble, Kyle, and Mei, Zhi-Gang. Mon . "Rate Theory Modeling and Simulation of Silicide Fuel at LWR Conditions". United States. doi:10.2172/1327817. https://www.osti.gov/servlets/purl/1327817.
@article{osti_1327817,
title = {Rate Theory Modeling and Simulation of Silicide Fuel at LWR Conditions},
author = {Miao, Yinbin and Ye, Bei and Hofman, Gerard and Yacout, Abdellatif and Gamble, Kyle and Mei, Zhi-Gang},
abstractNote = {As a promising candidate for the accident tolerant fuel (ATF) used in light water reactors (LWRs), the fuel performance of uranium silicide (U3Si2) at LWR conditions needs to be well understood. In this report, rate theory model was developed based on existing experimental data and density functional theory (DFT) calculations so as to predict the fission gas behavior in U3Si2 at LWR conditions. The fission gas behavior of U3Si2 can be divided into three temperature regimes. During steady-state operation, the majority of the fission gas stays in intragranular bubbles, whereas the dominance of intergranular bubbles and fission gas release only occurs beyond 1000 K. The steady-state rate theory model was also used as reference to establish a gaseous swelling correlation of U3Si2 for the BISON code. Meanwhile, the overpressurized bubble model was also developed so that the fission gas behavior at LOCA can be simulated. LOCA simulation showed that intragranular bubbles are still dominant after a 70 second LOCA, resulting in a controllable gaseous swelling. The fission gas behavior of U3Si2 at LWR conditions is benign according to the rate theory prediction at both steady-state and LOCA conditions, which provides important references to the qualification of U3Si2 as a LWR fuel material with excellent fuel performance and enhanced accident tolerance.},
doi = {10.2172/1327817},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 29 00:00:00 EDT 2016},
month = {Mon Aug 29 00:00:00 EDT 2016}
}

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