Research on Anti-seismic Qualification for Nuclear Safety Class I&C Equipment Base on Single-Frequency Wave Technical

Abstract

Multi-frequency wave method and single-frequency wave method can be used in anti-seismic qualification for nuclear-safety-class equipment. At present, multi-frequency wave is the most commonly method used for anti-seismic qualification. Due to long work period of qualification, large input of manpower and high test cost, multi-frequency wave method has become the bottleneck for the development of anti-seismic qualification techniques for nuclear-safety-class Instrumentation & Control equipment. As the qualification techniques for nuclear-safety-class I&C Equipment in China are becoming increasingly mature, the single-frequency wave method has become an efficient and low-cost method with reusable results for the qualification techniques of nuclear-safety-class I&C equipment. This paper puts forward an anti-seismic test method by use of sine beat in accordance with the requirements on anti-seismic tests for I&C equipment of nuclear power plants in the national standards of nuclear industry and in combination with the test features of Single-frequency wave method. Viewing from specific cases of sine beat tests on nuclear-safety-class I&C equipment, the sine beat method has been proven to be applicable and feasible, serving as an economical, efficient and reliable anti-seismic qualification method for equipment of nuclear industry.