Magnetic Investigation of Cladded Nuclear Reactor Blocks

The wall, made of ferromagnetic steel, of a nuclear reactor pressure vessel is covered by an austenitic (very weakly ferromagnetic) cladding. In this work, we investigated how the base material and the cladding can be inspected separately from each other by nondestructive magnetic measurements. It w...

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Main Authors: Gábor Vértesy, Antal Gasparics, Ildikó Szenthe, Sándor Bilicz
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/15/4/1425
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author Gábor Vértesy
Antal Gasparics
Ildikó Szenthe
Sándor Bilicz
author_facet Gábor Vértesy
Antal Gasparics
Ildikó Szenthe
Sándor Bilicz
author_sort Gábor Vértesy
collection DOAJ
description The wall, made of ferromagnetic steel, of a nuclear reactor pressure vessel is covered by an austenitic (very weakly ferromagnetic) cladding. In this work, we investigated how the base material and the cladding can be inspected separately from each other by nondestructive magnetic measurements. It was found that with the proper choice of the magnetizing yoke, these two different materials could be measured independently of each other. The effect of the yoke’s size was studied by the numerical simulation of magnetic flux, pumped into the material during magnetic measurements. Measurements were performed by two different sizes of yokes on pure base material, on base material under cladding and on cladding itself. Experiments verified the results of the simulation. Our results can help for the future practical application of magnetic methods in the regular inspection of nuclear power plants.
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spelling doaj.art-68f4e60b0f2d4c39a76004255cdecad22023-11-23T20:53:02ZengMDPI AGMaterials1996-19442022-02-01154142510.3390/ma15041425Magnetic Investigation of Cladded Nuclear Reactor BlocksGábor Vértesy0Antal Gasparics1Ildikó Szenthe2Sándor Bilicz3Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, HungaryCentre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, HungaryCentre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, HungaryDepartment of Broadband Infocommunications and Electromagnetic Theory, Faculty of Electrical Engineering and Informatics, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, HungaryThe wall, made of ferromagnetic steel, of a nuclear reactor pressure vessel is covered by an austenitic (very weakly ferromagnetic) cladding. In this work, we investigated how the base material and the cladding can be inspected separately from each other by nondestructive magnetic measurements. It was found that with the proper choice of the magnetizing yoke, these two different materials could be measured independently of each other. The effect of the yoke’s size was studied by the numerical simulation of magnetic flux, pumped into the material during magnetic measurements. Measurements were performed by two different sizes of yokes on pure base material, on base material under cladding and on cladding itself. Experiments verified the results of the simulation. Our results can help for the future practical application of magnetic methods in the regular inspection of nuclear power plants.https://www.mdpi.com/1996-1944/15/4/1425magnetic nondestructive evaluationnuclear reactor pressure vesselaustenitic claddingsteel degradation
spellingShingle Gábor Vértesy
Antal Gasparics
Ildikó Szenthe
Sándor Bilicz
Magnetic Investigation of Cladded Nuclear Reactor Blocks
Materials
magnetic nondestructive evaluation
nuclear reactor pressure vessel
austenitic cladding
steel degradation
title Magnetic Investigation of Cladded Nuclear Reactor Blocks
title_full Magnetic Investigation of Cladded Nuclear Reactor Blocks
title_fullStr Magnetic Investigation of Cladded Nuclear Reactor Blocks
title_full_unstemmed Magnetic Investigation of Cladded Nuclear Reactor Blocks
title_short Magnetic Investigation of Cladded Nuclear Reactor Blocks
title_sort magnetic investigation of cladded nuclear reactor blocks
topic magnetic nondestructive evaluation
nuclear reactor pressure vessel
austenitic cladding
steel degradation
url https://www.mdpi.com/1996-1944/15/4/1425
work_keys_str_mv AT gaborvertesy magneticinvestigationofcladdednuclearreactorblocks
AT antalgasparics magneticinvestigationofcladdednuclearreactorblocks
AT ildikoszenthe magneticinvestigationofcladdednuclearreactorblocks
AT sandorbilicz magneticinvestigationofcladdednuclearreactorblocks