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

K. R. Rao
K. R. Rao
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ASME Press
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Chapter 67, co-authored by Malcolm Europa, Paul Brinkhurst, Neil Broom, and John Fletcher, provides an overview of the codes and standards for pressurized equipment as used in the South African nuclear industry. The applicable legislation, regulatory requirements, and the roles of the respective regulatory bodies governing the use of pressurized equipment are discussed. A historical perspective of the construction, licensing, and operational phases of two pressurized water reactor (PWR) units of Westinghouse design but constructed under license from Framatome is given, with emphasis on the design and quality rules used and risk considerations allowed by the licensing framework.

Furthermore a description is given of the pebble bed modular reactor (PBMR) to be constructed for Eskom, the owner and licensee, by PBMR (Pty) Ltd, a largely state-owned and funded nuclear design company. The PBMR is a high-temperature gas-cooled reactor (HTGR) and is one of the next- generation nuclear power plants (NGNP). The PBMR is designed according to the ASME Section III Codes, utilizing light water reactor (LWR) service conditions and materials. This has imposed certain constraints on the design and required innovative design features which are discussed.

In conclusion, the paper discusses the stated intentions of the South African Government in terms of the expansion of the nuclear industry and the implications thereof. It also reviews the changes being made to the regulatory frameworks, the need for change, and the implications with respect to code and standards usage in the industry.

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