Structural Integrity Evaluation of Fuel Test Loop Submerged in Water Subjected to Postulated Pipe Rupture

  • Lee, Choon-Yeol (Department of Mechanical Engineering, Yeungnam University) ;
  • Kwon, Jae-Do (Department of Mechanical Engineering, Yeungnam University) ;
  • Lee, Yong-Son (Department of Mechanical Engineering, Yeungnam University) ;
  • Kim, Kil-Soo (Korea Institute of Nuclear Safety) ;
  • Kim, Jun-Yeun (Korea Atomic Energy Research Institute)
  • Published : 2000.02.01

Abstract

The structural integrity of the fuel test loop (FTL) in a Korean experimental reactor is evaluated when the FTL, submerged in a water environment, is subjected to a postulated pipe rupture. The analyses are performed under static and dynamic conditions, imposing the thrust force history at each postulated pipe rupture section. Through analysis the following results are found: l) A double ended guillotine can not be expected based on the toughness of the material, 2) the structural integrity of the chimney surrounding the FTL would not impede the structural integrity by the pipe whip. All analyses are performed by finite element methods.

Keywords

References

  1. Chang, Y. S., Seok, C. S. and Kim, Y. J., 1997, 'Prediction of Fracture Resistance Curves for Nuclear Piping Materials ( II ),' KSME, Vol. 21, No. 11, pp. 1786-1795.(in Korea)
  2. Chang, Y. S., Seok, C. S. and Kim, Y. J., 1997, 'Prediction of Fracture Resistance Curves for Nuclear Piping Materials ( III ) -Development of computer Program for Fracture Resistance Curve Prediction,' KSME, Vol. 21, No. 11, pp. 1796-1808. (in Korea)
  3. Design Basis for Protection of Light Water Nuclear Power Plants Against the Effects of Postulated Pipe Rupture, ANSI/ANS-58.2, 1988
  4. Kwon, J. D., Moon, Y. B., and Kim, S. T., 1998, 'A Study on the Application of Electrochemical Method for Degradation Evaluation,' 1998, KSME, Vol. 22, No.1, pp. 44-51.(in Korea)
  5. Marin J., 1962, 'Mechanical Behavior of Engineering Materials,' Prentice Hall, N. J.
  6. Postulated Pipe Rupture; Evaluation of Thrust Forces and Jet Impingement, Including Validity of Utilization of the Leak Before Break, Battelle Northwest Research Institution, 1995
  7. Song, S. H and Jhung, M. J., 1999, 'Experimental Modal Analysis on the Core Support Barrel of Reactor Internals Using a Scale Model,' KSME International Journal, Vol. 13, No. 8, pp. 585-594. (in Korea)
  8. Study of the State of the Design for Pipe Whip, Nt-1320-Research Project-1334-2 Final Report, Tennessee Valley Authority-Div. of Eng. Design, 1980
  9. Thompson, W. T., 1965, 'Vibration Theory Analysis and Application,' Prentice Hall, N. J.
  10. Timoshenko, S., 1955, 'Strength of Materials, Vol I ,' 1955, D. Van Nostrand Co., N. J.