Case Study: Kristen’s Cookie Company (a)

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Case Study: KRISTEN’S COOKIE COMPANY (A) In order to better understand Kristen’s Cookie Company’s production process, we draw out the Process Flow Diagram as follows: Table 1: Description of the process time-consuming, personnel, equipment | Cleaning &Mixing | Spooning | Load &Bake | Cooling | Packing &Pay | Time consuming | 6 min | 2 min | 1+9=10 min | 5 min | 2+1=3 min | Personnel | Kristen | Kristen | Roommate | Roommate | Roommate | Equipment | Mixer | Tray | Tray & Oven | Tray | (packaging) | Question 1: How long will it take to fulfill a rush order? There are 3 situations to deal with rush order 1) Assumes that there is no order before then the throughput time is the time it will take to fulfill a rush order. That is 6+2+10+5+3=26min. 2) Assumes that there is an order being processed, but the required ingredients are the same to the rush order (i.e. identical back to back orders), then the remaining time will take to fulfill a rush order. 3) Assumes that there is a order being processed, and the taste is different. In this situation, if we have 1 tray, we can save 6min when the former one is in process, and after the former order cooling finished, we can deal with the rush order. (In fact, in this case, if the order is still in the mixing stages, we can deal with the rush order first, and it will just take less than 26min.) If we have 2 trays, then we just need 10 more minutes to deal with a rush order, total 36minutes. See the following Chart: Note: All the answer assumes that each order just need 1 dozen cookies. Question 2: How many orders can you fill in a night, assuming you are open four hours each night? We can see that Chart above, if there are orders without interruption for four 4 hours, the first dozen cookies need at least 26 minutes. From the second dozen cookies, we just need to divide the remaining

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