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Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 3, Third Edition

Editor
K. R. Rao
K. R. Rao
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ISBN:
9780791802717
No. of Pages:
896
Publisher:
ASME Press
Publication date:
2009

Chapter 43, authored by Timothy J. Griesbach, covers PWR Reactor Vessel Integrity and the ASME Boiler and Pressure Vessel Code. The authors' objective is to provide an overview of the codes and regulations for prevention of brittle fracture of reactor pressure vessels. The background and bases for the original Section III, Appendix G Code requirements are discussed along with a description of the recent improvements that have been implemented in the Code in Section XI, Appendix G using more up-to-date technology. The changes and improvements are detailed such as the method for determining stress intensity factors, structural factors to account for uncertainties in the analytical methods, and material reference toughness curves. While the Code has incorporated these technical changes, the philosophy of protecting the vessel against brittle fracture has remained the same. The chapter also discusses ongoing efforts to incorporate the Master Curve approach for vessel toughness into the ASME Code, it considers areas for future improvements in the Code method for brittle fracture prevention of PWR reactor vessels, and it summarizes the aging management of PWR reactor vessel internals.

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