NDLI: Method for Predicting Mixing Tee Thermal Fatigue in Carbon Steel Based on Austenitic Stainless Steel Operating Experience

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Robert, O. Mcgill David, O. Harris Wolfe, Ken
Copyright Year	2009
Abstract	Over the past ten years, a significant amount of research has been conducted regarding mixing tee thermal fatigue in pressurized water reactors prompted by the leakage event at Civaux Unit 1 in 1998. The plant experienced a leak in the reactor residual heat removal system piping after a short period of operation during plant start-up. An evaluation as to the cause of the leakage concluded that mixing of hot and cold fluid upstream from the failed austenitic stainless steel elbow resulted in thermal fatigue cracking. Recently, an assessment of susceptibility to this thermal fatigue mechanism in boiling water reactors in the United States was completed. The piping systems in these reactors where the potential for thermal mixing exists are predominantly constructed of carbon steel. Thus, an analytical model was developed for predicting mixing tee thermal fatigue in carbon steel piping based on the austenitic stainless steel piping operating experience at Civaux. This paper describes how the model was developed and presents some general findings.
Sponsorship	Pressure Vessels and Piping
Starting Page	279
Ending Page	286
Page Count	8
File Format	PDF
ISBN	9780791843703
DOI	10.1115/PVP2009-77975
e-ISBN	9780791838549
Volume Number	Volume 7: Operations, Applications and Components
Conference Proceedings	ASME 2009 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2009-07-26
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Leakage Fluids Heat Stainless steel Fatigue Carbon steel Boiling water reactors Pipes Pressurized water reactors Fatigue cracks Piping systems
Content Type	Text
Resource Type	Article

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