United States Nuclear Regulatory Commission - Protecting People and the Environment

Assessment of United States Industry Structural Codes and Standards for Application to Advanced Nuclear Power Reactors: Appendices (NUREG/CR-6358, Volume 2)

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Publication Information

Manuscript Completed: August 1995
Date Published: October 1995

Prepared by:
T.M. Adams, J.D. Stevenson
Stevenson and Associates
9217 Midwest Avenue
Cleveland, Ohio 33125

J. Costello, NRC Project Manager

Prepared for:
Division of Engineering Technology
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC Job Code L2256

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Abstract

Throughout its history, the USNRC has remained committed to the use of industry consensus standards for the design, construction, and licensing of-commercial nuclear power facilities. The existing industry standards are based on the current class of light water reactors and as such may not adequately address design and construction features of the next generation of Advanced Light Water Reactors and other types of Advanced Reactors. As part of their on-going commitment to industry standards, the USNRC commissioned this study to evaluate U.S. industry structural standards for application to Advanced Light Water Reactors and Advanced Reactors. The initial review effort included: (1) the review and study of the relevant reactor design basis documentation for eight Advanced Light Water Reactors and Advanced Reactor Designs, (2) the review of the USNRC's design requirements for advanced reactors, (3) the review of the latest revisions of the relevant industry consensus structural standards, and (4) the identification of the need for changes to these standards. The results of these studies were used to develop recommended changes to industry consensus structural standards which will be used in the construction of Advanced Light Water Reactors and Advanced Reactors. Over seventy sets of proposed standard changes were recommended and the need for the development of four new structural standards was identified. In addition to the recommended standard changes, several other sets of information and data were extracted for use by USNRC in other on-going programs. This information included: (1) detailed observations on the response of structures and distribution system supports to the recent Northridge, California (1994) and Kobe, Japan (1995) earthquakes, (2) comparison of versions of certain standards cited in the standard review plan to the most current versions, and (3) comparison of the seismic and wind design basis for all the subject reactor designs. Finally provided is a suggested plan of action to achieve implementation of the recommended industry consensus standard changes.

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