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Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 2, Fourth Edition

K. R. Rao
K. R. Rao
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ASME Press
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Article IWA-4000 of Section XI of the Boiler and Pressure Vessel (B&PV) Code [1] contains the requirements for performing repair/replacement activities on nuclear power plant items. The repair/replacement activity requirements of IWA-4000 apply to a component after it has met all of the Construction Code requirements. This chapter examines the background of these repair/replacement activities, notes some of the significant restructuring of paragraphs and terminology and important changes in repair/replacement activity requirements since the original 1970 Edition, and reviews and discusses the requirements in IWA-4000 in the 2011 Addenda of Section XI. This chapter is beneficial to personnel performing such...

28.1 Introduction
28.2 Background of Repair/Replacement Activity Requirements
28.3 Scope and Applicability of Repair/Replacement Activity Requirements
28.4 Alternative Requirements
28.5 Responsibilities
28.6 Repair/Replacement Program and Plan
28.7 Additional General Requirements
28.8 Requirements for Items Used in a Repair/Replacement Activity
28.9 Design Associated with Repair/Replacement Activities
28.10 Welding, Brazing, Metal Removal, Fabrication and Installation
28.11 Examination and Testing Requirements
28.12 Alternatives to Construction Code Welding
28.13 Plugging and Sleeving of Heat Exchanger Tubing
28.14 Code Cases
28.15 Future Considerations
28.16 References
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