Mrp重订货点.pptVIP

Schneider Electric * - IT/SAP 重订货点 Safety Stock 安全库存 Reorder Level 重订货点 Stock Level 库存水平 ROP Replenishment Lead-time 补货提前期 RLT Order Quantity 订单数量 Time 时间 ReOrder Point重订货点 Qty ROP 提前期内的需求 或 不考虑安全库存的ROP 安全库存 New ROP with safety stock = Demand in lead time + Safety stock Safety stock ROP = Demand in Lead time + Safety stock ROP=提前期内的需求(ADU*LT)+ 安全库存 Demand in Lead time = Average Daily Usage x Lead time 提前期内的需求=平均日消耗料 X 提前期 Consumption Based MRPReorder Point Procedure 在库存低于重订货点时， MRP建议补货（In reorder point MRP, when the stock level falls below the reorder point, more stock must be procured.) 重订货点应该覆盖采购提前期的平均消耗（The reorder level should cover average consumption quantities during the replenishment lead time.） 重订货点使用前推方式计算可用时间（ Reorder point processing uses forward scheduling.） 物料可用时间 = 当前日期 + 采购处理时间+采购提前期+收货处理时间（上架， 质检等）（Current date (date of MRP execution) + purchasing department processing time + planned delivery time + goods receipt processing time = date the material will be available for use.） Classification by Value : 80/20 rules 2/8原则 20% 80% 20% Effort Result 80% 20% of items represent 80% of sales 20% of items represent 80% of inventory value 20% of items represent 80% of space in warehouse 20% of customers represent 80% of sales 20% of population represent 80% of GDP 20% of population buy 80% of total sold car in each year 20% of company represent 80% of tax paid to government 20% of population consume 80% of energy Classification by Value : ABC 按价值分类物料： ABC 20% 物料数量 销售额/库存金额 80% A 30% 15% B 50% 5% C Classification by Movement : FMR 按流动速度分类 M1 M2 M3 M4 M1 M2 M3 M4 M1 M2 M3 M4 Fast mover – Daily or Weekly F Medium mover – Monthly M Rare mover – Quarterly or Yearly R Demand Demand Demand How to measure the Safety stock ? 安全库存公式 理论安全库存计算公式 The Simple Safety Stock formula （简单公式） : SS = coef2 *ADU* √ D(Mainly used for Finished Goods，多用于成品) Coef2 is function of ABC/FMR of this article （见右图） ADU : Average Daily Usage （平均日消耗） D : actual reple