Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Evaluation of LMFBR core seismic analysis by the SALCON code

Abstract

Various core seismic tests such as PEC tests, Rapsodie tests, and Monju tests were calculated by SALCON code. The input conditions and experimental data were provided by each of the organizations through IAEA. At first, calculation model of SALCON code was presented. Then, two of the PEC tests, Test n.47 and Test n.47 were calculated. In Test n.47, the direction of input acceleration was flat to flat while it was corner to corner direction in Test n.30. The resulted displacements agreed very well with the experimental data in both cases. The validity of representing the LMFBR core components by its central row was also demonstrated by comparing it with a whole core calculation of PEC test configuration. As for RAPSODIE Tests RAP087 in the air, the calculated displacement time histories of the top of the elements agreed well with .the experimental data. Several calculations were performed with the single row model for Test RAPZ32 in the water by changing the effect of fluid. Although it was possible to obtain very good agreements with the experiments, additional experimental data are needed to confirm the validity of chosen calculation condition. The validity of SALCON code was also demonstrated by using Monju tests. The calculated displacements agreed very well with the experimental data. Finally, the effects of the direction of the input acceleration were investigated by comparing two calculations with different input acceleration directions. The comparison justified the choice of input acceleration direction to be the flat to flat in aseismic design of LMFBR core components because it was found that the resultant seismic loads were almost the same level regardless of the direction of the input acceleration.

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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:110-146