INFLUENCE OF MODEL PARAMETERS ON PIN POWER DISTRIBUTION DUE TO FUEL ASSEMBLY BOW

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21730%2F24%3A00381194" target="_blank" >RIV/68407700:21730/24:00381194 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.djs.si/nene2024proceedings/pdf/NENE2024_420.pdf" target="_blank" >https://www.djs.si/nene2024proceedings/pdf/NENE2024_420.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

INFLUENCE OF MODEL PARAMETERS ON PIN POWER DISTRIBUTION DUE TO FUEL ASSEMBLY BOW

Popis výsledku v původním jazyce

One of the main approaches to ensuring nuclear safety in neutron computations is the consideration of engineering factors. These factors define the margin of individual parameters in the power distribution within the core, ensuring that they remain within safety limits. The limits must be respected in the design of the fuel assembly and core, and monitored throughout the fuel cycle. The resulting engineering factor consists of many components; one component of this set is investigated in this report, specifically the evaluation of fuel assembly bowing or displacement and the subsequent impact on power distribution in the edge rows of fuel pins. Understanding this effect is crucial due to its significant influence on power distribution, as even a slight displacement of a fuel assembly and the resulting change in the water-to-uranium ratio near the fuel rods can lead to a noticeable change in the power output of the individual rods. This study primarily focuses on the bowing of selected PWR fuel assemblies 16x16. Additionally, it examines the impact of initial parameters, emphasizing the influence of surrounding properties, specifically the moderator (temperature, boric acid concentration, density, etc.). Results from this study can be used as input parameters for special detailed safety analysis.

Název v anglickém jazyce

INFLUENCE OF MODEL PARAMETERS ON PIN POWER DISTRIBUTION DUE TO FUEL ASSEMBLY BOW

Popis výsledku anglicky

One of the main approaches to ensuring nuclear safety in neutron computations is the consideration of engineering factors. These factors define the margin of individual parameters in the power distribution within the core, ensuring that they remain within safety limits. The limits must be respected in the design of the fuel assembly and core, and monitored throughout the fuel cycle. The resulting engineering factor consists of many components; one component of this set is investigated in this report, specifically the evaluation of fuel assembly bowing or displacement and the subsequent impact on power distribution in the edge rows of fuel pins. Understanding this effect is crucial due to its significant influence on power distribution, as even a slight displacement of a fuel assembly and the resulting change in the water-to-uranium ratio near the fuel rods can lead to a noticeable change in the power output of the individual rods. This study primarily focuses on the bowing of selected PWR fuel assemblies 16x16. Additionally, it examines the impact of initial parameters, emphasizing the influence of surrounding properties, specifically the moderator (temperature, boric acid concentration, density, etc.). Results from this study can be used as input parameters for special detailed safety analysis.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

<a href="/cs/project/TN02000012" target="_blank" >TN02000012: Centrum pokročilých jaderných technologií II</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 33rd International Conference Nuclear Energy for New Europe

ISBN

978-961-6207-59-1

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Nuclear Society of Slovenia

Místo vydání

Ljubljana

Místo konání akce

Portorož

Datum konání akce

9. 9. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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