This paper introduces an example of structural integrity evaluation for Light Water Reactor (LWR) against excessive loads on the Design Extension Condition (DEC). In order to assess the design acceptance level of DEC, three acceptance criteria which are the stress basis limit of the current design code, the strain basis limit of the current design code and the strain basis limit by using Load and Resistance Factor Design (LRFD) method were applied. As a result the allowable stress was increased by changing the acceptance criteria from the stress basis limit to the strain basis limit. It is shown that the practical margin of the LWR’s components still keeps even on DEC by introducing an appropriate criterion for integrity assessment and safety factors.
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ASME 2013 Pressure Vessels and Piping Conference
July 14–18, 2013
Paris, France
Conference Sponsors:
- Pressure Vessels and Piping Division
- Nondestructive Evaluation Engineering Division
ISBN:
978-0-7918-5564-5
PROCEEDINGS PAPER
Structural Integrity for Nuclear Power Plant Against Excessive Load on Design Extension Condition
Daigo Watanabe,
Daigo Watanabe
Mitsubishi Heavy Industries, Ltd., Kobe, Japan
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Kiminobu Hojo
Kiminobu Hojo
Mitsubishi Heavy Industries, Ltd., Kobe, Japan
Search for other works by this author on:
Daigo Watanabe
Mitsubishi Heavy Industries, Ltd., Kobe, Japan
Kiminobu Hojo
Mitsubishi Heavy Industries, Ltd., Kobe, Japan
Paper No:
PVP2013-97160, V01BT01A054; 8 pages
Published Online:
January 17, 2014
Citation
Watanabe, D, & Hojo, K. "Structural Integrity for Nuclear Power Plant Against Excessive Load on Design Extension Condition." Proceedings of the ASME 2013 Pressure Vessels and Piping Conference. Volume 1B: Codes and Standards. Paris, France. July 14–18, 2013. V01BT01A054. ASME. https://doi.org/10.1115/PVP2013-97160
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