NDLI: Development of a Fatigue Design Curve for Austenitic Stainless Steels in LWR Environments: A Review

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Omesh, K. Chopra
Copyright Year	2002
Abstract	The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components and specifies fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain–vs.–life (ε–N) data illustrate potentially significant effects of LWR coolant environments on the fatigue resistance of pressure vessel and piping steels. This paper reviews the existing fatigue ε–N data for austenitic stainless steels in LWR coolant environments. The effects of key material, loading, and environmental parameters, such as steel type, strain amplitude, strain rate, temperature, dissolved oxygen level in water, and flow rate, on the fatigue lives of these steels are summarized. Statistical models are presented for estimating the fatigue ε–N curves for austenitic stainless steels as a function of the material, loading, and environmental parameters. Two methods for incorporating environmental effects into the ASME Code fatigue evaluations are presented. Data available in the literature have been reviewed to evaluate the conservatism in the existing ASME Code fatigue design curves.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	119
Ending Page	132
Page Count	14
File Format	PDF
ISBN	0791846504
DOI	10.1115/PVP2002-1229
Volume Number	Pressure Vessel and Piping Codes and Standards
Conference Proceedings	ASME 2002 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2002-08-05
Publisher Place	Vancouver, BC, Canada
Access Restriction	Subscribed
Subject Keyword	Asme boiler and pressure vessel code Water Construction Oxygen Temperature Fatigue design Light water reactors Fatigue Steel Flow (dynamics) Design Pressure vessels Stainless steel Coolants Nuclear power stations Pipes Asme standards
Content Type	Text
Resource Type	Article

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