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http://dx.doi.org/10.3795/KSME-A.2006.30.10.1255

Coalescence Pressure of Steam Generator Tubes with Two Different-Sized Collinear Axial Through-Wall Clacks  

Huh Nam-Su (성균관대학교 기계공학부)
Chang Yoon-Suk (성균관대학교 기계공학부)
Kim Young-Jin (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.30, no.10, 2006 , pp. 1255-1260 More about this Journal
Abstract
To maintain the structural integrity of steam generator tubes, 40% of wall thickness plugging criterion has been developed. The approach is for the steam generator tube with single crack, so that the interaction effect of multiple cracks can not be considered. Although, recently, several approaches have been proposed to assess the integrity of steam generator tube with two identical cracks whilst actual multiple cracks reveal more complex shape. In this paper, the coalescence pressure of steam generator tube containing multiple cracks of different length is evaluated based on the detailed 3-dimensional (3-D) elastic-plastic finite element (FE) analyses. In terms of the crack shape, two collinear axial through-wall cracks with different length were considered. Furthermore, the resulting FE coalescence pressures are compared with FE coalescence pressures and experimental results for two identical collinear axial through-wall cracks to quantify the effect of crack length ratio on failure behavior of steam generator tube with multiple cracks. Finally, based on 3-D FE results, the coalescence evaluation diagrams were proposed.
Keywords
Coalescence Pressure; Collinear Axial Through-Wall Crack; Elastic-Plastic Finite Element Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Cochet, B. and Flesch, B., 1987, 'Crack Stability Criteria in Steam Generator Tubes,' 9th International Conference on Structural Mechanics in Reactor Technology, Vol. D, pp. 413-419
2 Gorman, J.A, Harris, J.E. and Lowenstein, D.B., 1995, 'Steam Generator Tube Fitness-for-Service Guidelines,'AECB Report, No. 2.228.2
3 Lee, I.H., Park, Y.w., Song, M.H., Kim, Y.I. and Moon, S.l., 2000, 'Determination of Equivalent Single Crack Based on Coalescence Criterion of Collinear Axial Cracks,' Nuclear Engineering and Design, Vol. 205,pp.1-11   DOI   ScienceOn
4 Moon, S.I., Kim, Y.J. and Lee, J.H, 2003, 'Estimation of Plastic Collapse Load of Steam Generator with Two Parallel Axial Through-Wall Cracks,' International Conference on Pressure Vessels and Piping, Vol. 464, pp. 223-230
5 Moon, S.I., Chang, Y.S., Kim, Y.J., Lee, J.H., Song, M.H., Choi, Y.H. and Hwang, S.S., 2004, 'Evaluation of Plastic Collapse Behavior for Multiple Cracked Structures,' Transactions of the KSME(A), Vol. 28, No 11, pp. 1813-1821   과학기술학회마을   DOI
6 ASTM International, 2001,' Standard Test Methods for Tension Testing of Metallic Materials,' American Society for Testing and Materials Standard, E8M.
7 'ABAQUS User's manual,' ABAQUS, Inc., 2003
8 ASME, 1998, 'Rules for Construction of Nuclear Power Plant Components,' ASME Boiler and Pressure Vessel Code, Section III
9 USNRC, 1996, 'Steam Generator Tube Failures,' NUREG/CR-6365
10 USNRC, 1976, 'Bases for Plugging Degraded PWR Steam Generator Tubes,' Regulatory Guide 1.121
11 Yu, Y.I., Kim, I.H., Kim, Y. and Kim, Y.I., 1994, 'Development of Steam Generator Tube Plugging Criteria for Axial Crack,' International Conference on Pressure Vessels and Piping, Vol. 280, pp. 79-83