29 06 20solution

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Solutions 1 EXERCISE 1 1. What is the number of aisles? = 4 aisles 2. What is the real storage capacity of the system (PL)? = 12064 PL 3. What is the real throughput capacity of the system (PL/h)? = 106 PL/h 4. What is the best location to store the PL? (4 points) = C 5. What is the principle behind the application of the No Cost Zone criterion in defining the optimal storage allocation for the PL to be stored? (2 points) - The fixed time to perform the dual cycle does not change if compared to the fixed time needed just to retrieve the PL in P - The variable time to perform the dual cycle does not change if compared to the variable time needed just to retrieve the PL in P - The overall time to perform the dual cycle does not change if compared to the time needed just to retrieve the PL in P - None of the other answers is correct 6. The No Cost Zone criterion (2 points): - Leads to better performances with respect to the Minimum Travel Between - Can be applied also in case storage and retrieval are not concurrent - Can be applied only if the ratio between the horizontal and vertical speed is equal to the ratio between the length and the height of the stroke - None of the other answers is correct 2 EXERCISE 2 7. Assess the overall amount of safety stocks in the first regional warehouse (RW1) (PL) (12 points) = 21.46 PL 8. The management is considering to increase the IFR of RW1 to 99%. What is the difference in terms of annual costs between this new configuration and the base case (IFR=97%)? (€/year) (10 points) = 291.8 €/year 9. Assume that RW1 is converted into a transit point. If compared to the base case (RW), how does the Order Cycle Time change? (2 points) - It increases - It decreases - It does not change 10. Assume that RW1 is converted into a transit point. If…