This article will describe the development of Section XI from a pamphlet-sized document to the lengthy and complex set of requirements, interpretations, and Code Cases that it has become by the year 2000. Section XI began as a set of rules for inservice inspection of the primary pressure boundary system of nuclear power plants. It has evolved to include other aspects of maintaining the structural integrity of safety class pressure boundaries. These include procedures for component repair/replacement activities, analysis of revised and new plant operating conditions, and specialized provisions for nondestructive examination of components and piping. It has also increased in scope to cover other Section III construction: Class 2, Class 3 and containment structures. First, to provide a context for the discussions to follow, the differences in administration and enforcement between Section XI and the other Code Sections will be explained, including its dependence on the US Nuclear Regulatory Commission. The importance of interpretations and Code Cases then will be discussed. The development of general requirements and requirements for each class of structure will be traced. The movement of Section XI toward a new philosophy, risk-informed inspection, will also be discussed. Finally, an annotated bibliography of papers describing the philosophy and technical basis behind Section XI will be provided. [S0094-9930(00)01703-0]
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August 2000
Technical Papers
Evolution of Section XI of the ASME Boiler and Pressure Vessel Code
Owen F. Hedden
Owen F. Hedden
ABB Combustion Engineering Nuclear Power, 3110 Phelps Road, West Suffield, CT 06093
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Owen F. Hedden
ABB Combustion Engineering Nuclear Power, 3110 Phelps Road, West Suffield, CT 06093
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division. February 1, 2000; revised manuscript received April 7, 2000. Technical Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. Aug 2000, 122(3): 234-241 (8 pages)
Published Online: April 7, 2000
Article history
Received:
February 1, 2000
Revised:
April 7, 2000
Citation
Hedden, O. F. (April 7, 2000). "Evolution of Section XI of the ASME Boiler and Pressure Vessel Code ." ASME. J. Pressure Vessel Technol. August 2000; 122(3): 234–241. https://doi.org/10.1115/1.556179
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