A METHOD OF MAKING A MODULAR CABINET SEISMICALLY QUALIFIED FOR USE IN A NUCLEAR POWER PLANT

摘要

A method of fabricating a cabinet for containing instruments used in a nuclear power plant is described. The method includes obtaining a preliminary design of a cabinet capable of physically accommodating instrumentation; Predicting natural frequencies of the preliminary design using a model that has been subjected to seismic eligibility testing; Comparing the predicted natural frequency of the preliminary design with the seismic response spectrum of the nuclear power plant; Adjusting the model parameters to obtain a final cabinet design having a natural frequency greater than the maximum amplitude frequency of the seismic response spectrum; And creating a cabinet according to the final cabinet design. The use of the described method reduces the need for costly failure testing of prototype cabinets and machinery.