Reliability and availability modeling and failure prediction of Kruna Electric Haul Trucks and improvement of current maintenance policies

淡水河谷在萨德伯里的业务是地球上最大的业务之一，雇用了大约4,000名员工。位于萨德伯里的一个地下铜/镍矿积极经营，年产1亿磅铜和5 000万磅镍，以及其他贵金属。通常，矿石在地下爆破并通过电动卡车运输到提升站，由此矿石被提升到表面。当需要时，这些卡车不能处于可用状态，这对操作流程和生产造成了严重的瓶颈。目前，一般使用的卡车共有6辆，其中5辆必须随时运行，1辆正在修理。维护人员关心当前PM政策的有效性，并希望了解 当前关于卡车故障模式的PM政策-因此可用性。此外，对当前PM政策的任何改进将有效地增加卡车可用性是非常期望的。该项目的主要目标是开发以下方法：1）AC和DC运输卡车的可靠性分析和可靠性建模，2）AC和DC卡车主要系统的可靠性分析和可靠性建模，3）AC和DC卡车的停机时间和可用性分析，以及4）卡车未来故障和停机时间的预测。

Vale's operations in Sudbury are among the largest on the planet, employing approximately 4,000 people. An underground copper/nickel mine located in Sudbury operates aggressively with an annual output of 100 million pounds of copper and 50 million pounds of nickel, in addition to other precious metals. Typically, the ore is blasted underground and transported by means of electrically powered trucks to a hoisting station whereby the ore is lifted to the surface. Failure of these trucks to be in an available state when needed poses a serious bottleneck to the flow of operation and consequently, production. Currently, there are a total of 6 trucks which are used generally-5 of which must be in operation at any time; and 1 undergoing repair. Maintenance personnel are concerned with the effectiveness of the current PM policies and would like to know the effect of current PM policy on the trucks failure patterns-hence availability. Furthermore, any improvements to the current PM policies which would effectively increase truck availability is much desired. The main objective of this project is to develop methodologies for 1) reliability analysis and reliability modeling of AC and DC haulage trucks, 2) reliability analysis and reliability modeling of major systems of AC and DC trucks, 3) downtime and availability analysis of AC and DC trucks, and 4) the prediction of future failures and downtime of the trucks.