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Title: Evaluation of Control Rod Designs for the Versatile Test Reactor

Abstract

Different fractions of boron carbide were investigated for the control rod assemblies of the Versatile Test Reactor (VTR). Reducing the number of rods per assembly increases the overall volume fraction of B4C, thus increasing reactivity worth. Doing so also reduces the melting margin inside the pellets and the reactivity worth loss by EOL. As a result the control rod layouts with the most (CR61) and least (CR7) number of rods were deemed less favorable for each of those two reasons. Overall, CR19 was found to have sufficient safety margins with the second best reactivity worth. The design only required a 44% 10B enrichment to reach the conservative margins put forward. The arrangement is recommended for both the control and safety rods of the VTR.

Authors:
ORCiD logo [1];  [1]
  1. Idaho National Laboratory
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1478782
Report Number(s):
INL/CON-18-45489-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: ANS Winter Meeting 2018, Orlando, Florida, 11/11/2018 - 11/15/2018
Country of Publication:
United States
Language:
English
Subject:
22 - GENERAL STUDIES OF NUCLEAR REACTORS; Versatile Test Reactor (VTR); Control Rods

Citation Formats

Abou-Jaoude, Abdalla, and Youinou, Gilles J. Evaluation of Control Rod Designs for the Versatile Test Reactor. United States: N. p., 2018. Web.
Abou-Jaoude, Abdalla, & Youinou, Gilles J. Evaluation of Control Rod Designs for the Versatile Test Reactor. United States.
Abou-Jaoude, Abdalla, and Youinou, Gilles J. Thu . "Evaluation of Control Rod Designs for the Versatile Test Reactor". United States. https://www.osti.gov/servlets/purl/1478782.
@article{osti_1478782,
title = {Evaluation of Control Rod Designs for the Versatile Test Reactor},
author = {Abou-Jaoude, Abdalla and Youinou, Gilles J.},
abstractNote = {Different fractions of boron carbide were investigated for the control rod assemblies of the Versatile Test Reactor (VTR). Reducing the number of rods per assembly increases the overall volume fraction of B4C, thus increasing reactivity worth. Doing so also reduces the melting margin inside the pellets and the reactivity worth loss by EOL. As a result the control rod layouts with the most (CR61) and least (CR7) number of rods were deemed less favorable for each of those two reasons. Overall, CR19 was found to have sufficient safety margins with the second best reactivity worth. The design only required a 44% 10B enrichment to reach the conservative margins put forward. The arrangement is recommended for both the control and safety rods of the VTR.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

Conference:
Other availability
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