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Conference Article: Core seismic study on experimental VHTR

Abstract

he experimental Very High Temperature Reactor (VHTR) core consists of about 1700 blocks (fuel blocks, replaceable reflectors, permanent reflectors, and core support blocks) and other structures surrounding the blocks. A major research and development effort was initiated in 1975 to study the dynamic response of the experimental VHTR core arrangement to seismic excitation. First, a VHTR core seismic test program was prepared. Next, basic tests and analysis were carried out according to the program. Tests and apparatus and test results are described for one-column and one-region tests, vertical two-dimensional test, and horizontal two-dimensional test. Many data on the response characteristics of columns and the effect of the side support stiffness on the core vibration characteristics were derived from the basic tests.

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Reference:

IAEA IWGGCR specialists' meeting on gas-cooled reactor seismic design problems and solutions. San Diego, CA (USA). 30 Aug - 1 Sep 1982

International Atomic Energy Agency, Vienna (Austria).

IWGGCR--6, pp:133-145