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Assessment of Aging of Nuclear Power Plant Civil Structures

[+] Author Affiliations
D. J. Naus

Oak Ridge National Laboratory, Oak Ridge, TN

B. R. Ellingwood

Georgia Institute of Technology, Atlanta, GA

H. L. Graves, III

U.S. Nuclear Regulatory Commission, Washington, D.C.

Paper No. ICONE10-22067, pp. 483-491; 9 pages
  • 10th International Conference on Nuclear Engineering
  • 10th International Conference on Nuclear Engineering, Volume 1
  • Arlington, Virginia, USA, April 14–18, 2002
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-3595-2 | eISBN: 0-7918-3589-8
  • Copyright © 2002 by ASME


Research is being conducted by ORNL for the USNRC to address aging of civil structures in light-water reactor plants. The importance and operating experience of nuclear power plant (NPP) civil structures is reviewed. Factors that can lead to age-related degradation of reinforced concrete structures and containment metallic pressure boundaries (i.e., steel containments and liners of reinforced concrete containments) are identified and their manifestations described. Background information and data for improving and developing methods to assess the effects of age-related degradation on structural performance are provided. Techniques for detection of degradation are reviewed and research related to development of methods for inspection of inaccessible regions of the containment pressure boundary presented. Application of structural reliability analysis methods to develop condition assessment tools and guidelines is described.

Copyright © 2002 by ASME



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