Activation Rates Validation to Support MSR Development

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F19%3AN0000189" target="_blank" >RIV/26722445:_____/19:N0000189 - isvavai.cz</a>

Result on the web

<a href="https://ans.org/pubs/transactions/a_45520" target="_blank" >https://ans.org/pubs/transactions/a_45520</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Activation Rates Validation to Support MSR Development

Original language description

Molten Salt Reactor (MSR) technology gains higher attention as some of the reactor concepts with smaller power tend to reach commercial maturity. Research Centre Řež (Czech Republic) considers MSRs as a crucial part of the research program with more than two decades of expertise. Unique infrastructure enables large variety of experiments in the fields of physical- and radiochemistry as well as reactor experiments. Current summary refers about latest advances in reactor physics experiments. Past measurements reported in 1 and 2 showed the similarity of the fast spectrum in different fluoride salts and the TEFLON insertion proving that fluorine is the main component driving the fast neutron spectrum shape with conclusion that the TEFLON material can be as good material for mock-up reactor experiments as fluoride salts. After this finding, question originated whether the filtered neutron spectrum of the light-water research reactor LR-0 is good enough to simulate neutronic conditions in the MSR. Further calculations aimed at neutron spectrum characterization showed that even the fluoride salt insertion (or filter) in the light-water research reactor is suitable to replicate the spectrum in molten salt reactor (see 3). From that reason, work 3 suggests several types of reactions transformed into spectral indices which are sensitive to changes in neutron spectrum and the calculated results in filtered light-water reactor spectrum are comparable with calculated molten salt reactor spectrum. Many of these reactions were measured in the LR-0 light-water reactor with TEFLON insertion recently and experimental results are shown in this work.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

<a href="/en/project/TH02020113" target="_blank" >TH02020113: Research and development of fluoride salt-cooled nuclear reactor systems</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

Transactions of the American Nuclear Society Volume 120, 2019, Pages 921-922, 2019

ISBN

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ISSN

0003-018X

e-ISSN

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Number of pages

2

Pages from-to

921-922

Publisher name

American Nuclear Society

Place of publication

La Grange Park, Illinois 60526 U.S.A.

Event location

Minneapolis, Minnesota, USA

Event date

Jun 13, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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