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统计备件消耗及其规律是一件非常复杂且繁琐的事情。这里介绍一种循环统计方法。统计的结果随统计样本空间的扩大逐步逼近实际值。此法在某铜矿实施后,取得了较好的经济效益,备件库存量下降8％,年节约流动资金200万元,利用率提高10％。 一、备件更换周期的统计 备件更换周期的统计由维修记录单处理模块来完成。每次维修,除填写维修作业命令单外,如需更换零件,还应填写备件领用单,内容包括备件编码、数量、单价及厂家编码等。更换周期用下式计算:
It is a very complicated and tedious task to count the consumption of spare parts and their laws. Here is a loop statistics method. The statistical results gradually approach the actual value as the statistical sample space expands. After the implementation of a certain copper mine, this method achieved good economic benefits. The spare parts inventory decreased by 8%, and the working capital was saved by 2 million yuan per year, and the utilization rate was increased by 10%. First, statistics of spare parts replacement cycle Statistics of spare part replacement cycle are completed by maintenance record processing module. For each repair, in addition to filling out orders for repair work, if replacement of parts is required, a spare part pick-up sheet should also be filled in, including the spare part code, quantity, unit price, and manufacturer’s code. The replacement cycle is calculated using the following formula: