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Kristen S Cookie Case

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• Published : November 12, 2014

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Case: KRISTEN’S COOKIE COMPANY

1. The analysis of the processing operations at Kristen’s cookies: The process is shown in the process flow below:

wash
mixer,
ingredien
ts & mix

•3
dozens
• 6 mins

put
dough
into the
tray

• 1 tray
/dozen
•2
mins/tray

put in
oven, set
timer

• 1 tray
/baking
in the
oven
• 1 min

baking

9 mins

cooling

5 mins

packing

2 mins

accept
payment

a. The total time to produce 1 dozen of cookies is= 6+2+1+9+5+2+1 = 26 minutes b. The total baking time is 10 minutes
c. The output from mixing is for 3 dozens of cookies while the oven’s capacity is only for 1 dozen for every baking process.
2. The bottleneck operation:
The capacity of the operation in making cookies is based on the output of the bottleneck. The bottleneck operation is baking the cookies in the oven, which can process 60min/(1+9) min = 6 dozen orders per hour. This assumes one dozen order sizes.

3. Number of orders that can be fulfilled in a night:
The operational hours is assumed 4 hours every night. The first dozen requires 26 minutes, so the time left is= (60 minutes x 4 hours) – 26 minutes = 214 minutes. As the baking operation is the bottleneck and it requires 10 minutes per dozen, so the numbers of the cookies can be produced after the first dozen is = 214 minutes/10 minutes ~ 21 dozens. The total production for 4 hours operation is = 1+21 = 22 dozens. To optimize the capacity, the oven has to...