Position evaluation of ex-core neutron flux measurement in new type graphite reactors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F21%3A43966457" target="_blank" >RIV/49777513:23220/21:43966457 - isvavai.cz</a>

Result on the web

<a href="https://www.epj-conferences.org/articles/epjconf/abs/2021/07/epjconf_animma2021_05005/epjconf_animma2021_05005.html" target="_blank" >https://www.epj-conferences.org/articles/epjconf/abs/2021/07/epjconf_animma2021_05005/epjconf_animma2021_05005.html</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Position evaluation of ex-core neutron flux measurement in new type graphite reactors

Original language description

Several concepts of new reactors use graphite. Some of them use graphite as a moderator, some of them as a reflector. There are at least two concepts of these graphite-type reactors under development in the Czech Republic. Both reactors use graphite as the reflector. An in-core measurement might be impossible to use because of various reasons, for instance, high temperature or aggressive environment. Therefore, this article focuses on ex-core neutron flux measurement system placed in the graphite reflector and the optimization of ex-core detector position. A set of experiments were performed at LR-0 reactor. The LR-0 is a light water reactor with a well-defined neutron field, which can be used for different material insertion tests and testing of its influence on criticality. Several modifications of LR-0 cores were modelled in Monte Carlo codes Serpent and KENO. A set of calculations were performed for verification of the criticality and neutron flux course in the reactor core and graphite reflector. Further investigation was focused on the influence of the presence of a graphite reflector on the neutron distribution in the reactor core. The LR-0 graphite experiments were also used to verify the calculations. Based on the results of this article, the optimal position of ex-core detectors in the graphite reflector is proposed.

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/TK01030103" target="_blank" >TK01030103: Ex-core Neutron Flux Measurement for the 4th. Generation Nuclear Reactors</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Article name in the collection

EPJ Web of Conferences

ISBN

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ISSN

2100-014X

e-ISSN

2100-014X

Number of pages

4

Pages from-to

1-4

Publisher name

EDP Sciences

Place of publication

Praha

Event location

Praha, Czech republic

Event date

Jun 21, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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