EPJ Web of Conferences
Volume 12, 2011AMP 2010 – International Workshop on Ageing Management of Nuclear Power Plants and Waste Disposal Structures (EFC Event 334)
|Number of page(s)
|Evaluation of Long Term Performance
|12 April 2011
Prediction of prestressing losses for long term operation of nuclear reactor buildings
Oxand SA, 49 Avenue Franklin Roosevelt, 77210 Avon, France
a e-mail: email@example.com
Prestressed concrete is used in nuclear reactor buildings to guarantee containment and structural integrity in case of an accident. Monitoring and operating experience over 40 years has shown that prestressing losses can be much greater than the design estimation based on the usual standard laws. A method was developed to determine the realistic residual prestress level in structures, in particular for those where no embedded instrumentation was installed, taking into account in situ measurement results rather than design characteristics. The results can enable the owner to justify extending the lifespan while guaranteeing adequate safety and to define and plan adequate maintenance actions.
© Owned by the authors, published by EDP Sciences, 2011
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