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讨论了核安全级设备使用中各种影响其寿期的因数，分析了其影响的失效模式和失效机理。在寿期试验方法方面采用了设备的模拟加速试验理论及方法，并讨论了灰色预测在加速寿命试验中的应用。
The factors that affect the lifetime of nuclear safety equipment are discussed. The failure modes and failure mechanisms of the equipment are analyzed. In the aspect of life test method, the simulation acceleration test theory and method of equipment are adopted, and the application of gray prediction in accelerated life test is discussed.