Thermal annealing of WWER-440 nuclear reactor pressure vessel internals: Present status

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F18%3AN0000039" target="_blank" >RIV/46356088:_____/18:N0000039 - 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

Thermal annealing of WWER-440 nuclear reactor pressure vessel internals: Present status

Popis výsledku v původním jazyce

Reactor pressure vessel (RPV) of light water reactor and its internals are the most important components of any nuclear power plant. RPV and its internals are exposed to high temperatures, pressures and intensive neutron flux during the operation. These conditions lead up to material degradation - especially radiation hardening and embrittlement. Paper presents the annealing treatment as one of the possible solutions to provide and re-establish sufficient mechanical properties of RPV internals during the operation. The first part of the poster is dedicated to the description of equipment which is used for the annealing of unirradiated and irradiated materials at the UJV Rez hot cell facility. Following part shows selection of unirradiated material for definition of original mechanical properties. Next part is an overview of selected annealing regimes. The main section is focused on definition of mechanical properties (especially hardness) of original and annealed material of WWER 440 type reactor internals as well as on methods and analyses employed to study of mechanical properties changes. The final part discusses the next planned steps in the solution of the research project TH02020565: "Assurance of Safe and Long Term Operation of Nuclear Reactor Pressure Vessel Internals" which is realized in the period from 2016 to 2020 with the support of Technology Agency of the Czech Republic.

Název v anglickém jazyce

Thermal annealing of WWER-440 nuclear reactor pressure vessel internals: Present status

Popis výsledku anglicky

Reactor pressure vessel (RPV) of light water reactor and its internals are the most important components of any nuclear power plant. RPV and its internals are exposed to high temperatures, pressures and intensive neutron flux during the operation. These conditions lead up to material degradation - especially radiation hardening and embrittlement. Paper presents the annealing treatment as one of the possible solutions to provide and re-establish sufficient mechanical properties of RPV internals during the operation. The first part of the poster is dedicated to the description of equipment which is used for the annealing of unirradiated and irradiated materials at the UJV Rez hot cell facility. Following part shows selection of unirradiated material for definition of original mechanical properties. Next part is an overview of selected annealing regimes. The main section is focused on definition of mechanical properties (especially hardness) of original and annealed material of WWER 440 type reactor internals as well as on methods and analyses employed to study of mechanical properties changes. The final part discusses the next planned steps in the solution of the research project TH02020565: "Assurance of Safe and Long Term Operation of Nuclear Reactor Pressure Vessel Internals" which is realized in the period from 2016 to 2020 with the support of Technology Agency of the Czech Republic.

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/TH02020565" target="_blank" >TH02020565: Zajištění dlouhodobého provozu vnitřních částí tlakových nádob reaktorů jaderných elektráren</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings

ISBN

978-808729484-0

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

658-662

Název nakladatele

TANGER Ltd.

Místo vydání

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Místo konání akce

Brno

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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