Přístupnostní navigace
E-application
Search Search Close
Publication detail
KRAUTSCHNEIDER, R. JOCH, L.
Original Title
Decreasing thermal stresses in steam generator collector welds area using external cooling
Type
conference paper
Language
English
Original Abstract
Presented 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.
Keywords
steam generator; thermal stresses; external cooling; stress corrosion cracking; dissimilar metal weld
Authors
KRAUTSCHNEIDER, R.; JOCH, L.
RIV year
2014
Released
5. 5. 2016
Publisher
Elsevier
ISBN
2211-8128
Periodical
Procedia Materials Science
Year of study
12
Number
1
State
Kingdom of the Netherlands
Pages from
Pages to
17
Pages count
6
URL
http://www.sciencedirect.com/science/article/pii/S2211812816000122
Full text in the Digital Library
http://hdl.handle.net/11012/204196
BibTex
@inproceedings{BUT109173, author="Roman {Krautschneider} and Lukáš {Joch}", title="Decreasing thermal stresses in steam generator collector welds area using external cooling", booktitle="Procedia Materials Science", year="2016", journal="Procedia Materials Science", volume="12", number="1", pages="12--17", publisher="Elsevier", doi="10.1016/j.mspro.2016.03.003", issn="2211-8128", url="http://www.sciencedirect.com/science/article/pii/S2211812816000122" }