NDLI: Residual Stress Study in Dissimilar Metal Welds of a PWR Pressurizer Surge Nozzle: Validation of Developed Fast Analysis Method and Examination of Safe-End Length Effect

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Maekawa, Akira Kawahara, Atsushi Serizawa, Hisashi Murakawa, Hidekazu
Copyright Year	2013
Abstract	It is necessary to establish properly reliable weld residual stress analysis methods for accurate crack initiation and growth assessment of primary water stress corrosion cracking, which may occur in nickel-based dissimilar metal welds in pressurized water reactors. The US Nuclear Regulatory Commission and the Electric Power Research Institute cooperatively conducted an international round robin for weld residual stress analysis to improve stress analysis methods and to examine the uncertainties involved in the calculated stress values. In this paper, the results from the authors’ participation in the round robin were reported. In the round robin, the weld residual stress in a nickel-based dissimilar metal weld of a pressurizer surge nozzle mock-up was computed under various analysis conditions. The residual stress analysis results computed by a welding simulation code currently being developed that uses the iterative substructure method were in good agreement with the measurements. Also, the effect of safe-end length on residual stress distribution was examined as an additional discussion point.
Sponsorship	Pressure Vessels and Piping Division Nondestructive Evaluation Engineering Division
File Format	PDF
ISBN	9780791855713
DOI	10.1115/PVP2013-97176
Volume Number	Volume 6B: Materials and Fabrication
Conference Proceedings	ASME 2013 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2013-07-14
Publisher Place	Paris, France
Access Restriction	Subscribed
Subject Keyword	Water Stress concentration Uncertainty Welding Metals Stress analysis (engineering) Fracture (materials) Stress corrosion cracking Surges Stress Electricity (physics) Welded joints Simulation Nozzles Nickel Pressurized water reactors
Content Type	Text
Resource Type	Article

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