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http://dx.doi.org/10.3795/KSME-A.2010.34.11.1675

Limit Loads for Circular Wall-Thinned Feeder Pipes Subjected to Bending and Internal Pressure.  

Je, Jin-Ho (Dept. of Mechanical Engineering, Korea Univ.)
Lee, Kuk-Hee (Dept. of Mechanical Engineering, Korea Univ.)
Chung, Ha-Joo (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Jong-Sung (Dept. of Mechanical Engineering, Sunchon Nat'l Univ.)
Kim, Yun-Jae (Dept. of Mechanical Engineering, Korea Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.11, 2010 , pp. 1675-1680 More about this Journal
Abstract
Flow Accelerated Corrosion (FAC) occurring during in-service conditions results in localized wall-thinning in the feeder pipes of CANDU. The wall-thinning of the feeder pipes is the main degradation mechanisms affecting the integrity of piping systems. In this paper, we assess the integrity of wall-thinned feeder pipes by limit load analysis. The limit loads for wall-thinning feeder pipes subjected to in-plane bending and internal pressure were determined on the basis of finte element limit analyses. The limit loads are determined from the results of limit analyses of elasticperfectly-plastic materials using the large geometry change. Closed-form approximations of limit load solutions for wall-thinning feeder pipes subjected to in-plane bending and pressure are proposed.
Keywords
CANDU; feeder pipe; limit load; circular wall-thinning; bending; internal pressure;
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  • Reference
1 Oh, C.-S., Kim, Y.-J. and Park, C.-Y., 2007, "Plastic Loads of Elbows with Local Wall Thinning Under in-Plane Bending,” International Journal of Fracture, Vol. 145, pp. 63-79.   DOI
2 Duan, X., Kozluk, M. J. and Li, M., 2009, "Comprehensive Integrity Assessment of Carbon Steel Feeder Pipes/Elbows Subject to Wall Thinning,” Proceedings of the ASME 2009 Pressure Vessels and Piping Division Conference, Prague, Czech Republic.
3 Jin, J. C., Eom, S. and Awad, R., 2008, "Some Issues in Fitness for Service Assessment of Wall Thinned CANDU Feeder Pipes,” Proceedings of the ASME 2008 Pressure Vessels and Piping Division Conference, Chicago, USA.
4 Slade, J. P. and Gendron, T. S., 2005, "Flow Accelerated Corrosion and Cracking of Carbon Steel Piping in Primary Water - Operating Experience at the Point LEPREAU Generating Station,” Proceedings of the 12th International Conference on Environmental Degradation of Materials in Nuclear Power System.
5 ABAQUS User’s Manual, Version 6.9, 2009 (Dassault Systemes, Paris, France).
6 ASME Boiler and Pressure Vessel Code, Section II, ASME, New York (2007).
7 Kim, Y.-J., Kim, J., Ahn, J., Hong, S.-P. and Park, C.-Y., 2008, "Effects of Local Wall Thinning on Plastic Limit Loads of Elbows Using Geometrically Linear FE Limit Analyses,” Engineering Fracture Mechanics, Vol. 75, pp. 2225-2245.   DOI   ScienceOn