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Title: Flux harmonics in large SFR cores in relation with core characteristics such as power peaks

Abstract

Designing future Sodium Fast Reactors (SFR) requires enhancing their operational performance and reducing the probability to go into core disruption. As a consequence of these constraints, these novel reactors exhibit rather unusual features compared to past designs. The cores are much larger with rather flat shape. The consequences of that shape on the core characteristics deserve to be studied. The approach taken in this paper is to calculate the eigenvalue associated to the first harmonic and its associated flux. It is demonstrated that these values are linked to some core features, in particular, those sensitive to spatial effects such as power peaks induced by the movement of control rods. The uncertainty associated to these characteristics is being tentatively studied and guidelines for further studied are being identified. In the development strategy of these new SFR designs, a first demonstration plant of limited installed power (around 1500 MWth) will have to be built first. Identifying the possibility of going later to higher power plants (around 3600 MWth) without facing new challenges is an important criterion for designing such a plant. That strategy is being studied, in this paper, focusing on some rather frequent initiator such as the inadvertent control rod withdrawalmore » for different core sizes with the help of the perturbation theory and the flux harmonics. (authors)« less

Authors:
; ; ; ;  [1]
  1. CEA, DEN, DER, SPRC Cadarache, F-13108 Saint Paul-lez-Durance (France)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22212773
Resource Type:
Conference
Resource Relation:
Conference: M and C 2013: 2013 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, Sun Valley, ID (United States), 5-9 May 2013; Other Information: Country of input: France; 7 refs.; Related Information: In: Proceedings of the 2013 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering - M and C 2013| 3016 p.
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICAL METHODS AND COMPUTING; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; COMPARATIVE EVALUATIONS; CONTROL ELEMENTS; DEMONSTRATION PLANTS; DESIGN; EIGENFUNCTIONS; EIGENVALUES; FAST REACTORS; HARMONICS; PEAKS; PERFORMANCE; PERTURBATION THEORY; SODIUM

Citation Formats

Rimpault, G., Buiron, L., Fontaine, B., Sciora, P., and Tommasi, J. Flux harmonics in large SFR cores in relation with core characteristics such as power peaks. United States: N. p., 2013. Web.
Rimpault, G., Buiron, L., Fontaine, B., Sciora, P., & Tommasi, J. Flux harmonics in large SFR cores in relation with core characteristics such as power peaks. United States.
Rimpault, G., Buiron, L., Fontaine, B., Sciora, P., and Tommasi, J. Mon . "Flux harmonics in large SFR cores in relation with core characteristics such as power peaks". United States.
@article{osti_22212773,
title = {Flux harmonics in large SFR cores in relation with core characteristics such as power peaks},
author = {Rimpault, G. and Buiron, L. and Fontaine, B. and Sciora, P. and Tommasi, J.},
abstractNote = {Designing future Sodium Fast Reactors (SFR) requires enhancing their operational performance and reducing the probability to go into core disruption. As a consequence of these constraints, these novel reactors exhibit rather unusual features compared to past designs. The cores are much larger with rather flat shape. The consequences of that shape on the core characteristics deserve to be studied. The approach taken in this paper is to calculate the eigenvalue associated to the first harmonic and its associated flux. It is demonstrated that these values are linked to some core features, in particular, those sensitive to spatial effects such as power peaks induced by the movement of control rods. The uncertainty associated to these characteristics is being tentatively studied and guidelines for further studied are being identified. In the development strategy of these new SFR designs, a first demonstration plant of limited installed power (around 1500 MWth) will have to be built first. Identifying the possibility of going later to higher power plants (around 3600 MWth) without facing new challenges is an important criterion for designing such a plant. That strategy is being studied, in this paper, focusing on some rather frequent initiator such as the inadvertent control rod withdrawal for different core sizes with the help of the perturbation theory and the flux harmonics. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 2013},
month = {Mon Jul 01 00:00:00 EDT 2013}
}

Conference:
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