Decreasing thermal stresses in steam generator collector welds area using external cooling

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dc.contributor.authorKrautschneider, Romancs
dc.contributor.authorJoch, Lukášcs
dc.coverage.issue1cs
dc.coverage.volume12cs
dc.date.issued2016-05-05cs
dc.description.abstractPresented paper deals with possibility of external cooling of steam generator welds area to decrease internal tensile thermal stresses which are one of the causes of cracking in this area. On various WWER-440 nuclear power plants (NPP) steam generators (SG) occurred quite serious problem of cracking in weld joints connecting primary collectors to the SG vessels nozzle. The cause of this cracking is stress corrosion cracking (SCC) mechanism. Results of these analyses showed that by proper external cooling of the weld area it is possible not just to decrease significantly existing tensile stresses, but to change them into compressive ones. This of course would have great impact on crack occurrence and growth.en
dc.description.abstractPresented paper deals with possibility of external cooling of steam generator welds area to decrease internal tensile thermal stresses which are one of the causes of cracking in this area. On various WWER-440 nuclear power plants (NPP) steam generators (SG) occurred quite serious problem of cracking in weld joints connecting primary collectors to the SG vessels nozzle. The cause of this cracking is stress corrosion cracking (SCC) mechanism. Results of these analyses showed that by proper external cooling of the weld area it is possible not just to decrease significantly existing tensile stresses, but to change them into compressive ones. This of course would have great impact on crack occurrence and growth.en
dc.formattextcs
dc.format.extent12-17cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProcedia Materials Science. 2016, vol. 12, issue 1, p. 12-17.en
dc.identifier.doi10.1016/j.mspro.2016.03.003cs
dc.identifier.issn2211-8128cs
dc.identifier.other109173cs
dc.identifier.urihttp://hdl.handle.net/11012/204196
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofProcedia Materials Sciencecs
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S2211812816000122cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2211-8128/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectsteam generatoren
dc.subjectthermal stressesen
dc.subjectexternal coolingen
dc.subjectstress corrosion crackingen
dc.subjectdissimilar metal welden
dc.subjectsteam generator
dc.subjectthermal stresses
dc.subjectexternal cooling
dc.subjectstress corrosion cracking
dc.subjectdissimilar metal weld
dc.titleDecreasing thermal stresses in steam generator collector welds area using external coolingen
dc.title.alternativeDecreasing thermal stresses in steam generator collector welds area using external coolingen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-109173en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 14:52:25en
sync.item.modts2025.10.14 10:55:08en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs

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