The aim of the paper is to introduce methods to estimate the residual life of steam generators with alloy 600 thermally treated (TT) tubing, taking into account primary water stress corrosion cracking (PWSCC) as the main contributor damage. The methods take into account both initiation and propagation of PWSCC cracks in the expansion transition zone of steam generator tubes, as well as the current damage status (cracking and plugging) of the tube bundle, known from inspection results. A probabilistic model is used to treat initiation, while the propagation stage is treated in a deterministic way based on inspection data. After introducing the methods used to assess the residual life, a brief parametric study will be shown to illustrate the effects of initiation versus propagation. Eventually, the cases of a few actual steam generators with tubing made of alloy 600 TT showing different situations of present damage and damage evolution rates will be presented.
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October 2010
Research Papers
Residual Life Assessment of Steam Generators With Alloy 600 TT Tubing: Methods and Application
Ian de Curieres,
Ian de Curieres
Materials and Corrosion Engineer
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Marie-Christine Meunier,
Marie-Christine Meunier
Technician
AREVA-NP
, Paris, La Défense 92084, France
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Pierre Joly
Pierre Joly
Manager
AREVA-NP
, Paris, La Défense 92084, France
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Ian de Curieres
Materials and Corrosion Engineer
Marie-Christine Meunier
Technician
AREVA-NP
, Paris, La Défense 92084, France
Pierre Joly
Manager
AREVA-NP
, Paris, La Défense 92084, FranceJ. Eng. Gas Turbines Power. Oct 2010, 132(10): 102902 (6 pages)
Published Online: June 30, 2010
Article history
Received:
July 20, 2009
Revised:
August 6, 2009
Online:
June 30, 2010
Published:
June 30, 2010
Citation
de Curieres, I., Meunier, M., and Joly, P. (June 30, 2010). "Residual Life Assessment of Steam Generators With Alloy 600 TT Tubing: Methods and Application." ASME. J. Eng. Gas Turbines Power. October 2010; 132(10): 102902. https://doi.org/10.1115/1.4000340
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