Rare earth oxides as burnable absorber for VVER nuclear fuel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00240662" target="_blank" >RIV/68407700:21220/15:00240662 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23220/15:43932159

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Rare earth oxides as burnable absorber for VVER nuclear fuel

Popis výsledku v původním jazyce

Long-term reactivity control consists of the compensation of fuel reactivity loss due to the fission products build up in the nuclear fuel. This reactivity loss is balanced by the reactivity gain caused by the burnable absorber (BA) depletion. Introduction of burnable absorber leads to flattening of reactivity during fuel depletion and consequently allow long fuel cycles with higher fuel enrichments. Research of fuel depletion aims at development of advanced types of BAs in nuclear fuel. The paper describes the neutronic calculation comparison of rare earth oxides that can be used as burnable absorbers. VVER nuclear fuel with 5.0 wt% enrichment was selected for the study. Content of rare earth oxides in the fuel was selected to have the same compensation of initial reactivity excess for all studied cases. Multiplication factor during depletion, pin power peaking and residual poisoning was evaluated. Comparison calculations were performed with state-of-art statistical and deterministic depletion codes SERPENT and SCALE/TRITON and with fast depletion code UWB1 that are currently under development. Accuracy and calculation speed of calculational tools is commented.

Název v anglickém jazyce

Rare earth oxides as burnable absorber for VVER nuclear fuel

Popis výsledku anglicky

Long-term reactivity control consists of the compensation of fuel reactivity loss due to the fission products build up in the nuclear fuel. This reactivity loss is balanced by the reactivity gain caused by the burnable absorber (BA) depletion. Introduction of burnable absorber leads to flattening of reactivity during fuel depletion and consequently allow long fuel cycles with higher fuel enrichments. Research of fuel depletion aims at development of advanced types of BAs in nuclear fuel. The paper describes the neutronic calculation comparison of rare earth oxides that can be used as burnable absorbers. VVER nuclear fuel with 5.0 wt% enrichment was selected for the study. Content of rare earth oxides in the fuel was selected to have the same compensation of initial reactivity excess for all studied cases. Multiplication factor during depletion, pin power peaking and residual poisoning was evaluated. Comparison calculations were performed with state-of-art statistical and deterministic depletion codes SERPENT and SCALE/TRITON and with fast depletion code UWB1 that are currently under development. Accuracy and calculation speed of calculational tools is commented.

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020455" target="_blank" >TE01020455: Centrum pokročilých jaderných technologií (CANUT)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

International Conference on Nuclear Engineering, Proceedings, ICONE

ISBN

978-4-88898-256-6

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

ASME

Místo vydání

New York

Místo konání akce

Makuhari

Datum konání akce

17. 5. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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