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1设备事故浴盆曲线规律浴盆曲线是描述设备整个使用期间,典型的失效变化规律,因形似浴盆,故称浴盆曲线规律。浴盆曲线规律显示了设备的故障率是时间的函数,曲线的形状呈两头高,中间低,具有明显的阶段性,可划分为三个阶段:早期故障期,偶然故障期,耗损故障期(见图1)。规律表明,设备投用后的前期和使用后期是故障的频发期,要有效降低设备故障率,抓住这两个时期是关键。
1 Equipment Accident bathtub curve curve Bathtub curve is to describe the equipment during the entire use, the typical failure of the law of change, because of the shape of the bathtub, it is called the bath curve. Bath curve shows the failure rate of equipment is a function of time, the shape of the curve was two high, low in the middle, with obvious stage, can be divided into three stages: early failure period, accidental failure period, depletion failure period (see figure 1). The law shows that the equipment put into use after the early and late use is the frequency of failure, to effectively reduce the failure rate of equipment, to seize these two periods is the key.