Thermal Annealing of WWER – 440 Nuclear Reactor Pressure Vessel Internals Material

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F20%3AN0000011" target="_blank" >RIV/46356088:_____/20:N0000011 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/20:00344893

Výsledek na webu

<a href="https://www.confer.cz/proceedings/metal/2020.pdf" target="_blank" >https://www.confer.cz/proceedings/metal/2020.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2020.3497" target="_blank" >10.37904/metal.2020.3497</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal Annealing of WWER – 440 Nuclear Reactor Pressure Vessel Internals Material

Popis výsledku v původním jazyce

Current trend of long-term operation of NPP’s for more than 60 years requires assurance of its safety and reliability. One of the solutions how to extend service life of reactor pressure vessel (RPV) is thermal annealing, which became a verified technology and its application in nuclear industry was prompted mainly due to an inability of RPV exchange. At present time, there is no comparable method for RPV internals that are not monitored by surveillance program and their material is exposed to significantly more intense neutron flux than the RPV. Paper presents the thermal annealing as one of the possible solutions to provide and re-establish sufficient mechanical properties of RPV internals during the operation. According to previously obtained results of unirradiated material, two thermal annealing regimes for irradiated experimental material were selected - based on the annealing temperatures of 550 and 600 °C. The possibility of recovery of mechanical properties to the level almost corresponding to the initial state by the thermal annealing was studied by hardness testing and static fracture toughness tests before and after the thermal annealing of irradiated material.

Název v anglickém jazyce

Thermal Annealing of WWER – 440 Nuclear Reactor Pressure Vessel Internals Material

Popis výsledku anglicky

Current trend of long-term operation of NPP’s for more than 60 years requires assurance of its safety and reliability. One of the solutions how to extend service life of reactor pressure vessel (RPV) is thermal annealing, which became a verified technology and its application in nuclear industry was prompted mainly due to an inability of RPV exchange. At present time, there is no comparable method for RPV internals that are not monitored by surveillance program and their material is exposed to significantly more intense neutron flux than the RPV. Paper presents the thermal annealing as one of the possible solutions to provide and re-establish sufficient mechanical properties of RPV internals during the operation. According to previously obtained results of unirradiated material, two thermal annealing regimes for irradiated experimental material were selected - based on the annealing temperatures of 550 and 600 °C. The possibility of recovery of mechanical properties to the level almost corresponding to the initial state by the thermal annealing was studied by hardness testing and static fracture toughness tests before and after the thermal annealing of irradiated material.

Druh

D - Stať ve sborníku

CEP obor

—

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

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Metal 2000 : 29th International Conference on Metallurgy and Materials : Conference Proceedings

ISBN

978-80-87294-97-0

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

416-421

Název nakladatele

Tanger,

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

20. 5. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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