Detail publikace

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

KRAUTSCHNEIDER, R. JOCH, L.

Anglický název

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

Typ

Stať ve sborníku v databázi WoS či Scopus

Jazyk

en

Originální abstrakt

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.

Klíčová slova anglicky

steam generator; thermal stresses; external cooling; stress corrosion cracking; dissimilar metal weld

Vydáno

2016-05-05

Nakladatel

Elsevier

ISSN

2211-8128

Kniha

Procedia Materials Science

Časopis

Procedia Materials Science

Ročník

12

Číslo

1

Strany od–do

12–17

Počet stran

6

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"
}