KSME Journal

, Volume 6, Issue 2, pp 101–108 | Cite as

Dynamic characteristics of reactor core for pipe break and seismic excitations

  • Myung J. Jhung
  • Keun B. Park


This paper investigates the dynamic responses of the reactor core for main steam line and economizer feedwater line breaks. The tributary pipe breaks in lieu of main coolant loop breaks are considered because leak-before-break evaluation has provided a technical basis for the elimination of double ended guillotine breaks. This paper also calculates the response of the reactor core due to the motions induced from safe shutdown earthquake and operating basis earthquake. The dynamic responses such as fuel assembly shear force, bending moment and displacement, and spacer grid impact loads are carefully investigated. Also, reported in this paper are the different response characteristics of each pipe break and seismic excitation.

Key Words

Pipe Break Safe Shutdown Earthquake(SSE) Operating Basis Earthquake(OBE) Fuel Assembly Spacer Grid 


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 1992

Authors and Affiliations

  • Myung J. Jhung
    • 1
  • Keun B. Park
    • 1
  1. 1.Power Reactor Mechanical EngineeringKorea Atomic Energy Research InstituteTaejonKorea

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