Fuel assembly deformation measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F19%3AN0000180" target="_blank" >RIV/26722445:_____/19:N0000180 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Fuel assembly deformation measurements

Popis výsledku v původním jazyce

The periodic measurements of nuclear fuel geometry state provide the answer about their deformation over the course of their performance in the nuclear reactor. A very big bunch of data can be obtained from the visual inspection – one of the most popular types of the inspection conducted over the nuclear fuel – mainly concerning the surface state of the nuclear fuel. In the case of the geometry deformation measurements, using the visual system relays on the image postprocessing. This approach, however allowing obtaining a big amount of data for further analysis, has relatively low precision and is very subjective. To reach a higher level of precision and to be less vulnerable to a random error more advanced system has to be implemented, possibly a supplementary system. Such an opportunity offers the ultrasonic (UT) system which has been developed over last decades. The UT measuring system, although immature when compared to the visual one, has the steady precision of far less than 1 mm. Currently, the future of the UT measuring system is very promising as it is being under research and development around the world. CVR has joined this pursuit and the first outputs assure the advantages of the system, confirming the system’s precision oscillating around 0.1 mm. The UT system is in this way a perfect supplement to the visual system or a substitution in the case of geometry measurements only.

Název v anglickém jazyce

Fuel assembly deformation measurements

Popis výsledku anglicky

The periodic measurements of nuclear fuel geometry state provide the answer about their deformation over the course of their performance in the nuclear reactor. A very big bunch of data can be obtained from the visual inspection – one of the most popular types of the inspection conducted over the nuclear fuel – mainly concerning the surface state of the nuclear fuel. In the case of the geometry deformation measurements, using the visual system relays on the image postprocessing. This approach, however allowing obtaining a big amount of data for further analysis, has relatively low precision and is very subjective. To reach a higher level of precision and to be less vulnerable to a random error more advanced system has to be implemented, possibly a supplementary system. Such an opportunity offers the ultrasonic (UT) system which has been developed over last decades. The UT measuring system, although immature when compared to the visual one, has the steady precision of far less than 1 mm. Currently, the future of the UT measuring system is very promising as it is being under research and development around the world. CVR has joined this pursuit and the first outputs assure the advantages of the system, confirming the system’s precision oscillating around 0.1 mm. The UT system is in this way a perfect supplement to the visual system or a substitution in the case of geometry measurements only.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the12th International Conference on WWER Fuel Performance, Modelling and Experimental Support

ISBN

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ISSN

1313-4531

e-ISSN

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Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Bulgarian Academy of Sciences

Místo vydání

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Místo konání akce

Nassebar, Bulgaria

Datum konání akce

16. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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