维修设备备件的库存控制

为了有效的对部件库存进行管理该文分析并比较了不同库存方法,通过航化产品生产商的实例进行了说明.该文研究工作主要分为三个阶段:第一阶段用失效模式和危害性分析(FMECA)方法来划分备件的关键性等级.第二阶段用ABC分类法进行备件消耗率评级.最后,对不同的再订货点方法进行比较.该文利用真实数据对三种需求建模方法及相应的库存策略进行评估,这三种需求建模方法包括:正态分布、泊松分布和伽马分布.采用经济订货批量模型确定订购策略,结果显示,正态分布对于慢移动消耗的备件建模不太实用,而泊松分布相对更好.

Spare parts inventory control for the maintenance of productive plants

This paper analyses a set of compares different methods to effectively manage spare parts inventory,presenting a case study relating to an aviation chemical producer.The work was divided into three phases：in the first phase FMECA analysis was performed in order to classify all items on the basis of their criticality.in the second phase ABC method was used to evaluate consumption rates of the spare parts.Finally different re-order point methods were compared.Three demand modelling techniques and inventory policies are evaluated using real data：1）Normal distribution,2）Poisson distribution and 3）Gamma distribution.Economic Order Quantity method was used to define the purchase policy.The results showed that the normal distribution is not generally advised for modelling the demand of slow-moving items,for which a Poisson distribution is better recommended.