Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Seismic analysis for MONJU core seismic experiments using the SAFA program

Horiuchi, T. (Hitachi Ltd, Tsuchiura, Ibaraki (Japan). Mechanical Engineering Research Lab.)

Abstract

As a part of the IAEA/IWGFR coordinated research program on LMFBR seismic analysis codes, the results of MONJU core seismic experiments conducted by PNC Japan, were analyzed and the experimental and the calculated results were compared. For these analyses, the computer program SAFA was utilized. This program was developed by Hitachi, Ltd., to analyze vibration of fast breeder reactor core components during seismic excitation. In comparisons of displacements and impact forces, the calculated results were close to the experimental ones. However, on strains, the calculated results were smaller than the measured ones. This may be because the measured strain records include impulsive strain caused by impact force, which cannot be taken into account using the numerical model used in SAFA. Since the results were in good agreement in general, the effectiveness of the SAFA can be considered to have been verified.

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key words: comparative evaluations; experimental data; mechanical vibrations; monju reactor; reactor cores; s codes; seismic effects; strains; theoretical data; validation
Reference:
Final research co-ordination meeting on intercomparison of liquid metal fast reactor seismic analysis codes. Bologna (Italy). 30 May - 2 Jun 1995
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--882, pp:175-195