Degradation Mechanism of Dissimilar Metal Weld Joints on Steam Generator Collectors VVER 440MW Type

Lubomír Junek; Ladislav Jurasek; Zdeněk Čančura; Miroslava Ernestová; Zuzana Skoumalová

doi:10.4028/www.scientific.net/KEM.741.134

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 741Degradation Mechanism of Dissimilar Metal Weld...

Degradation Mechanism of Dissimilar Metal Weld Joints on Steam Generator Collectors VVER 440MW Type

Abstract:

Indications were detected on dissimilar metal welds (DMW) of steam generators (SG) after 20 years of operation during NDT inspections. Indications started slowly growth every year. DMW on SGs had to be repaired. Paper describes experimental analysis and degradation mechanism of SG weld joints failures.

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Periodical:

Key Engineering Materials (Volume 741)

Pages:

134-137

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.741.134

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Online since:

June 2017

Authors:

Lubomír Junek*, Ladislav Jurasek, Zdeněk Čančura, Miroslava Ernestová, Zuzana Skoumalová

Keywords:

Cracks, Degradation, Dissimilar Metal Weld, Repair, Steam Generator, Stress Corrosion Cracking (SCC)

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References

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