Isolation of nuclear power plants from earthquake attack

  • R. I. Skinner DSIR Physics and Engineering Laboratory, Lower Hutt, New Zealand
  • R. G. Tyler DSIR Physics and Engineering Laboratory, Lower Hutt, New Zealand
  • S. B. Hodder DSIR Physics and Engineering Laboratory, Lower Hutt, New Zealand

Abstract

The analysis of one-mass and two-mass models indicates that the earthquake-generated horizontal forces and deformations of the main structures of a nuclear power plant can be reduced by a factor of about ten times by mounting the overall power plant building on a recently developed base-isolation system. The very high forces which the ‘resonant appendage‘ effect may induce in some critical components (such
 as fuel elements, control rods and essential piping) may be reduced by a factor of 40 or more times by the isolation system. The parameters of
 the isolation system have been chosen as appropriate to the level of protection which should be provided for a nuclear plant in a seismically active area. Consideration is given to flexible mounts and dampers suitable for such an isolator.

References

Skinner, R. I., Bycroft, G. N., and McVerry, G. H., "A Practical System for Isolating Nuclear Power Plants from Earthquake Attack", Nuclear Engng. and Design, 1976, 36, 287-297.

Skinner, R. I., KeTTy, J. M. and Heine, A. J., "Hysteretic Dampers for Earthquake-Resistant Structures", Int. J. Earthq. Engng. Struct. Dyn., 1975, 3, 287-96.

Robinson, W. H., and Greenbank., L. R., "An Extrusion Energy Absorber Suitable for the Protection of Structures During an Earthquake", Int. J. Earthq. Engng. Struct. Dyn., 1976, 4, 251-259.

Skinner, R. I., Heine, A. J., and Tyler, R. G., "Hysteretic Dampers to Provide Structures with Increased Earthquake Resistance", To be published in Procs. 6th World Conference on Earthquake Engineering, 1977, Delhi, India.

Lindley, P. B., "Engineering Design with Natural Rubber", N.R. Tech. Bull., 1970, 3rd Edn. Natural Rubber Producers Association, London.

Published
1976-12-31
How to Cite
Skinner, R. I., Tyler, R. G., & Hodder, S. B. (1976). Isolation of nuclear power plants from earthquake attack. Bulletin of the New Zealand Society for Earthquake Engineering, 9(4), 199-204. https://doi.org/10.5459/bnzsee.9.4.199-204
Section
Articles

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