MTOHierarchy这讲稿.ppt

* * CALCULATE: 1. IRL IRL = RT Demand + SSdemand + SSsupply + Other Cycle Time Demand 2. Average FG inventory FGavg = IRL - 1/2 RT Demand Exercise: Calculating IRL and FG Inventory Cont’d LEAN – Week 2_2g_Kanbans * This slide show is an example of how the Kanban tool has been used in the Analytical Laboratory to reduce the testing interruptions due to lack of solvents. Suppliers will make replenishment to the Safety Stock based on Solvent Consumption at the Analytical Laboratory. LEAN – Week 2_2g_Kanbans * LEAN – Week 2_2g_Kanbans * EXERCISE: Kanban Design OBJECTIVES: At the end of this exercise, participants will understand how to calculate kanban size TASKS: Duration Description 15 minutes Given the data below and the formulas, calculate the kanban size SUPPLEMENTS: There are no supplements for this exercise DELIVERABLES: None GIVEN: Weekly mean demand for the process = 1000 units/week Standard Deviation of Weekly Demand = 100 units Standard Deviation of Weekly Supply = 150 units Average batch size = 200 units Replenishment time = 2 weeks z-factor = 2.054 Days per week = 5 Other cycle time = 0 FORMULA: KANBAN SIZE = (mean demand * replenishment time) + (safety stock for demand variability over replenishment time) + (safety stock for supply variability over replenishment time) Notes: Safety stock for demand variability over replenishment time = standard deviation of demand * z-factor * SQRT (replenishment time/unit of measure of demand) Safety stock for supply variability over replenishment time = standard deviation of supply * z-factor * SQRT (replenishment time/unit of measure of supply) Exercise: Kanban Design * Exercise: Kanban Design Fixed Timing - Variable Quantity QA Thank You The End * * * Lean Roadmap and Principles * * * * * * LEAN – Week 2_2c_z-factor * LEAN – Week 2_2c_z-factor * Example: suppose the normal distribution provides an adequate model for process performan