Under normal operating conditions, piping systems in nuclear power plants (NPPs) are subject not only to internal pressure but also to bending loads induced by deadweight and thermal expansion [1]. Bending is thus considered to be an important factor in evaluating the integrity of defective piping components. Local wall-thinning due to flow-accelerated corrosion is a main degradation mechanism of carbon steel piping systems in NPPs [2], and the integrity evaluation of wall-thinned piping components has become an important issue [3]. This study investigated the effects of bending load on the failure pressure of wall-thinned pipe bends under internal pressure. Our previous study experimentally evaluated the bending load effects on the failure pressure of wall-thinned elbows under displacement controlled in-plane bending load [4], but the numbers of experimental data were insufficient to determine the effects of bending load on the failure pressure of wall-thinned pipe bends. Therefore, the present study systematically evaluates the effects of bending load on the failure pressure of wall-thinned pipe bends using parametric finite element analyses.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-49255
PROCEEDINGS PAPER
Effect of Bending Load on the Failure Pressure of Wall-Thinned Pipe Bends Available to Purchase
Jin Weon Kim,
Jin Weon Kim
Chosun University, Gwangju, Korea
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Oon Young Jung
Oon Young Jung
Korea Hydro & Nuclear Power Co., Jeonnam, Korea
Search for other works by this author on:
Jin Weon Kim
Chosun University, Gwangju, Korea
Oon Young Jung
Korea Hydro & Nuclear Power Co., Jeonnam, Korea
Paper No:
PVP2010-25287, pp. 1223-1225; 3 pages
Published Online:
January 10, 2011
Citation
Kim, JW, & Jung, OY. "Effect of Bending Load on the Failure Pressure of Wall-Thinned Pipe Bends." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B. Bellevue, Washington, USA. July 18–22, 2010. pp. 1223-1225. ASME. https://doi.org/10.1115/PVP2010-25287
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