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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Enrique Gomez, Roberto Ruiz and Robert M. (Con) Wilson
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DOI:10.17265/2159-5275/2014.08.008
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ABSTRACT
A stress analysis is described for a nuclear steam generator tubesheet with a thin, or irregular ligament, associated with a mis-drilled hole using the rules of ASME (American Society of Mechanical Engineers) B & PV Section III and non-mandatory Appendix A, Article A-8000 for stresses in perforated flat plates. The analysis demonstrates the proper application of the NB-3200 rules for this special application, with discussion of the differences between an actual tube hole deviation and what is assumed in ASME Appendix A. This is a companion paper to “Technical Justification Supporting Operation with a Tube Installed in a Mis-Drilled Hole of a Steam Generator Tubesheet”
KEYWORDS
Heat exchanger, tubesheet, misdrilled hole, irregular ligament, thin ligament, A-8000
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