KALIMER

Kalim R, Schomacker R, Yiice S, Briiggemann O (2005) Polym Bull 55 287... 

In the following sections, the major design features of KALIMER are bnefly descnbed and some of results from the safety design analyses and supportmg R D programs are summanzed... 

Table 1 summanzes some of the major design parameters of KALIMER, which is currently under the conceptual design phase A salient feature of its key system designs is bnefly descnbed in the following[2]... 

A plant-wide transient analysis code is being developed for the analysis of KALIMER s inherent safety and for the assistance in the development of design, where new design features will frequently demand not just new data but new models. Transient and safety analysis code SSC-K is under development based upon the SSC-L code which was developed by BNL for the analysis of loop type... 

Some essential results of the seismic base isolation studies for KALIMER are summarized in this section. 

Fig. 9. KALIMER Seismic Isolation Test Program Reactor Building Analyses...

Fig 10 Lumped mass-beam models of KALIMER building Table 2 Accerations and Displacements of Reactor Building Under ATH Earthquake... 

To produce the seismic analysis model for the reactor internal structures, the lumped-mass modeling technique is used From the 3-dimensional finite element model of KALIMER reactor internal structures, the detail local stiffness analyses are performed to construct the lumped-mass seismic analysis model The seismic analysis and evaluation of KALIMER are presented through the modal analysis, the seismic time history analvsis, and the equivalent seismic stiess analysis Table 3 shows the natural frequencies of the reactor structures resulted from the modal analysis for the seismic analysis model shown in Fig 13... 

The seismic responses of reactor structures of seismically isolated KALIMER are significantly reduced for accelerations and relative displacements in honzontal direction For the isolation case, the maximum peak acceleration in honzontal direction is same m all structures and components, i e, 0 llg for OBE and 0 22g for SSE The responses are reduced about 14 times in MX. 9 tunes in EMP and 8 times in reactor vessel liner, support barrel, and core compared with those m non-isolated case However, for the vertical direction, significant response amplifications occur ui whole structures This IS due to the vertical structural frequency of 8 1 Hz located in dormnant excitation frequency band of input motion... 

Table 4 shows the results of the seismic margin evaluations and the seismic capacity of KALIMER reactor internal structures including the reactor vessel and containment vessel. From the results, the containment vessel, reactor vessel, inlet plenum, and core support have large seismic stress margins but the reactor vessel liner, support barrel, separation plate, and baffle plate have small margins. The maximum stress occurs in reactor vessel liner parts coimected with the separation plate due to the vertical seismic loads. 

To evaluate the maximum seismic resistance in preliminary designed KALIMER reactor internal structures, the index of seismic capability(SC) is defined in this paper as follows ... 

Using above equation, the seismic capability of KALIMER is preliminary calculated as 0.354g. When the vertical stiffiiess of the support barrel/separation plate/reactor vessel liner region increases by the design change, this index value is expected to be significantly increased[8]. 

C K Park et al, KALIMER Design Concept Report KAERI/TR-888/97. KAERI (1997)... 

D H Hahn et al, Preliminary Analysis of KALIMER Unprotected Transient Events, Proceeding of 98 KNS Fall Meetmg, Korean Nuclear Soaety (1998)... 

Yoo, B, Lee. J H and Choi, IK, Seismic analysis modeling and seismic response analysis of KALIMER reactor building, KAERI/TR-1062/98, (1998)... 

YD Choi, S T Hwang, C K Park, KALIMER Program and Sodium Technology in Korea, Proceedings of IWGFR Technical Meeting on Sodium Removal and Disposed, (1997)... 

D.M. Willson, K. Dunman, T. Roppel, R. Kalim, Rank extraction in tin oxide sensor arrays. Sens. Actuators B 6, 199-210 (2000)... 

The objective of KALIMER Program is to develop an economically competitive, inherently safe, environmentally friendly, and proliferation-resistant fast reactor concept. Efforts of the KALIMER Program will be concentrated on the establishment of an advanced design concept in order to contribute to the worldwide R D and commercialization of the LMR. 

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