Neutron Dosimetry Overview for WWERs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000057" target="_blank" >RIV/26722445:_____/18:N0000057 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46356088:_____/18:N0000024

Výsledek na webu

<a href="http://dx.doi.org/10.1520/STP160320170038" target="_blank" >http://dx.doi.org/10.1520/STP160320170038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1520/STP160320170038" target="_blank" >10.1520/STP160320170038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Neutron Dosimetry Overview for WWERs

Popis výsledku v původním jazyce

Neutron dosimetry is a mandatory part of the monitoring of irradiation conditions within the reactor pressure vessels (RPVs) of all type of reactors, including water-water energetic reactors (WWER5). The main experimental part is connected with the surveillance specimen programs because the determination of neutron fluence in each of the surveillance specimens is required for the evaluation of radiation damage in RPV materials. Ex-vessel (cavity) neutron dosimetry is practically mandatory for all WWERs because it serves as the basis for fitting results from calculations of neutron fluence in the RPV wall. In addition, retrospective neutron dosimetry in WWER RPVs is supported by a high content (approximately 1 wt.%) of niobium in the upper layer of the austenitic cladding on the inner RPV surface. This paper describes the main principles of experimental neutron dosimetry in WWER RPVs and some specific results for different types of their units and different surveillance specimen programs. Some discussion is also held regarding different approaches for neutron fluence determination, i.e., for a differential threshold energy equal to 0.5 MeV in WWER studies.

Název v anglickém jazyce

Neutron Dosimetry Overview for WWERs

Popis výsledku anglicky

Neutron dosimetry is a mandatory part of the monitoring of irradiation conditions within the reactor pressure vessels (RPVs) of all type of reactors, including water-water energetic reactors (WWER5). The main experimental part is connected with the surveillance specimen programs because the determination of neutron fluence in each of the surveillance specimens is required for the evaluation of radiation damage in RPV materials. Ex-vessel (cavity) neutron dosimetry is practically mandatory for all WWERs because it serves as the basis for fitting results from calculations of neutron fluence in the RPV wall. In addition, retrospective neutron dosimetry in WWER RPVs is supported by a high content (approximately 1 wt.%) of niobium in the upper layer of the austenitic cladding on the inner RPV surface. This paper describes the main principles of experimental neutron dosimetry in WWER RPVs and some specific results for different types of their units and different surveillance specimen programs. Some discussion is also held regarding different approaches for neutron fluence determination, i.e., for a differential threshold energy equal to 0.5 MeV in WWER studies.

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/TG02010037" target="_blank" >TG02010037: Komercializace výsledků VaV pro energetiku - CORD</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

American Society for Testing and Materials Selected Technical Papers, Volume: 1603

ISBN

978-0-8031-7651-5

ISSN

0066-0558

e-ISSN

—

Počet stran výsledku

42

Strana od-do

120-161

Název nakladatele

ASTM International

Místo vydání

West Conshohocken, USA

Místo konání akce

Chicago, IL, USA

Datum konání akce

29. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000441706500006