一、问题的提出事故备件也称保险备件,正常使用情况下,其寿命可达2年以上.某一设备的零部件一旦发生损坏,无备件更换时可造成重大停产事故,而且故障发生后的应急措施及现场修复则比较困难.这类备件一级制造周期较长,因此必须有一定的储备. First, the problem of the proposed accident spare parts, also known as insurance spare parts, under normal use, the life of up to 2 years. Once the parts of a device damaged, no replacement of spare parts can cause major production shutdown accident, and after the occurrence of the failure Emergency measures and on-site repairs are more difficult. Such spare parts have a long manufacturing cycle and therefore must have a certain reserve.