Gas detection in sodium cooled fast reactors: determination of a transfer function

To keep the dependability of Sodium Cooled Fast Reactor, the “clean sodium concept” is demanded, which means that the sodium is free from contamination. The release of fission products is searched for by a contamination measuring system. We need to have a comprehensive description of cladding failur...

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Autores principales: Ding C., Filliatre P., Desgranges L.
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Lenguaje:EN
Publicado: EDP Sciences 2021
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Acceso en línea:https://doaj.org/article/a464cea5fe4f4efb94111fe113b5ff1e
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spelling oai:doaj.org-article:a464cea5fe4f4efb94111fe113b5ff1e2021-12-02T17:12:46ZGas detection in sodium cooled fast reactors: determination of a transfer function2100-014X10.1051/epjconf/202125305002https://doaj.org/article/a464cea5fe4f4efb94111fe113b5ff1e2021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_05002.pdfhttps://doaj.org/toc/2100-014XTo keep the dependability of Sodium Cooled Fast Reactor, the “clean sodium concept” is demanded, which means that the sodium is free from contamination. The release of fission products is searched for by a contamination measuring system. We need to have a comprehensive description of cladding failures and the detection of contamination, including the failure occurrence on the fuel pin, the transfer process through the sodium and cover gas, the measurement efficiency, etc. We aim to identify the important parameters of physical phenomena, with modelling and simulations based on the return of experiments from past reactors such as PHENIX. There have been a total of 15 open pin failures in PHENIX reactor. Through studying these detected signals, we can get a better physical explanation and description of the evolution of failures. The detection system is related to different stages of the evolution of fuel pin, with different types of fission products, various release mechanism and physical properties. During the evolution of the failed fuel pin, gaseous fission products is released on the first stage of failure and the gas detection system is aimed for the gaseous fission products monitoring. We proposed a quantitative modeling of transfer function to describe the time broadening of the gas release from the fuel pin to the detector. The result matches well with PHENIX experiment data, with the same order of magnitude of the time broadening and the same shape of exponential decreasing. A determination of the transfer function of this gas detection system is validated in this paper.Ding C.Filliatre P.Desgranges L.EDP Sciencesarticlesodium fast reactorsphenix reactorcladding failure detectiontransfer functionPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 05002 (2021)
institution DOAJ
collection DOAJ
language EN
topic sodium fast reactors
phenix reactor
cladding failure detection
transfer function
Physics
QC1-999
spellingShingle sodium fast reactors
phenix reactor
cladding failure detection
transfer function
Physics
QC1-999
Ding C.
Filliatre P.
Desgranges L.
Gas detection in sodium cooled fast reactors: determination of a transfer function
description To keep the dependability of Sodium Cooled Fast Reactor, the “clean sodium concept” is demanded, which means that the sodium is free from contamination. The release of fission products is searched for by a contamination measuring system. We need to have a comprehensive description of cladding failures and the detection of contamination, including the failure occurrence on the fuel pin, the transfer process through the sodium and cover gas, the measurement efficiency, etc. We aim to identify the important parameters of physical phenomena, with modelling and simulations based on the return of experiments from past reactors such as PHENIX. There have been a total of 15 open pin failures in PHENIX reactor. Through studying these detected signals, we can get a better physical explanation and description of the evolution of failures. The detection system is related to different stages of the evolution of fuel pin, with different types of fission products, various release mechanism and physical properties. During the evolution of the failed fuel pin, gaseous fission products is released on the first stage of failure and the gas detection system is aimed for the gaseous fission products monitoring. We proposed a quantitative modeling of transfer function to describe the time broadening of the gas release from the fuel pin to the detector. The result matches well with PHENIX experiment data, with the same order of magnitude of the time broadening and the same shape of exponential decreasing. A determination of the transfer function of this gas detection system is validated in this paper.
format article
author Ding C.
Filliatre P.
Desgranges L.
author_facet Ding C.
Filliatre P.
Desgranges L.
author_sort Ding C.
title Gas detection in sodium cooled fast reactors: determination of a transfer function
title_short Gas detection in sodium cooled fast reactors: determination of a transfer function
title_full Gas detection in sodium cooled fast reactors: determination of a transfer function
title_fullStr Gas detection in sodium cooled fast reactors: determination of a transfer function
title_full_unstemmed Gas detection in sodium cooled fast reactors: determination of a transfer function
title_sort gas detection in sodium cooled fast reactors: determination of a transfer function
publisher EDP Sciences
publishDate 2021
url https://doaj.org/article/a464cea5fe4f4efb94111fe113b5ff1e
work_keys_str_mv AT dingc gasdetectioninsodiumcooledfastreactorsdeterminationofatransferfunction
AT filliatrep gasdetectioninsodiumcooledfastreactorsdeterminationofatransferfunction
AT desgrangesl gasdetectioninsodiumcooledfastreactorsdeterminationofatransferfunction
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