Non-destructive testing of mock-up of reactor pressure vessel cavity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F23%3AN0000197" target="_blank" >RIV/26722445:_____/23:N0000197 - 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

Non-destructive testing of mock-up of reactor pressure vessel cavity

Popis výsledku v původním jazyce

Two concrete blocks 1000×600×300 mm, each lined from one side by 10 mm thick carbon steel liner, were designed to simulate concrete cavity around reactor pressure vessel (RPV) in Temelin nuclear power plant (NPP). Each block contained two cylindrical holes with 6.5 mm thick carbon steel liners representing channels for ionization chamber in concrete biological shield (CBS). Both blocks were curved as a section of a tube. Parallel work was development of non-destructive testing methods able to determine any defect in the block. Four concrete tubes with artificial defects were designed and manufactured for this purpose. Each tube was surrounded from inside by 6 mm thick carbon steel plate and from outside by 7 mm thick polyethylene tube. Ultrasonic pulse-echo, impact-echo, magnetic memory method (MMM), indirect ultrasonic pulse method and non-linear wave modulation spectroscopy (NWMS) were employed. The best result were reached by MMM and NWMS. Simple one-axis manipulators were developed for both methods to be applied in the tubes. Moreover, NWMS was used for testing of irradiated concrete block from the fifth unit of NPP Greifswald.

Název v anglickém jazyce

Non-destructive testing of mock-up of reactor pressure vessel cavity

Popis výsledku anglicky

Two concrete blocks 1000×600×300 mm, each lined from one side by 10 mm thick carbon steel liner, were designed to simulate concrete cavity around reactor pressure vessel (RPV) in Temelin nuclear power plant (NPP). Each block contained two cylindrical holes with 6.5 mm thick carbon steel liners representing channels for ionization chamber in concrete biological shield (CBS). Both blocks were curved as a section of a tube. Parallel work was development of non-destructive testing methods able to determine any defect in the block. Four concrete tubes with artificial defects were designed and manufactured for this purpose. Each tube was surrounded from inside by 6 mm thick carbon steel plate and from outside by 7 mm thick polyethylene tube. Ultrasonic pulse-echo, impact-echo, magnetic memory method (MMM), indirect ultrasonic pulse method and non-linear wave modulation spectroscopy (NWMS) were employed. The best result were reached by MMM and NWMS. Simple one-axis manipulators were developed for both methods to be applied in the tubes. Moreover, NWMS was used for testing of irradiated concrete block from the fifth unit of NPP Greifswald.

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/VI20192022154" target="_blank" >VI20192022154: Kontrola betonu biologické ochrany po ozáření neutrony z jádra reaktoru</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the international conference on non-destructive evaluation of concrete in nuclar applications

ISBN

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ISSN

1799-490X

e-ISSN

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Počet stran výsledku

7

Strana od-do

148-154

Název nakladatele

Aalto University

Místo vydání

Helsinki

Místo konání akce

Espoo, Finland

Datum konání akce

25. 1. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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