MGMT 36100: HW 01
40 Points
Due: September 9, 2009
Write proper dimensions at each step.
Question 1 (4 points: 3, 1)
Consider problem 2, page 59 from the textbook (“Rockness Recycling”) and answer the following.
(a)
Calculate capacity of each stage (per week) and identify the bottleneck.
Step 1: 60/1*40 = 2400 students/wk
Step 2: 60/1.5*40 = 1600  represents the bottleneck in the system
Step 3: 60/.8*40 = 3000
Step 4: 60/1*40 = 2400
Step 5: 60/1.2*40 = 2000
(b)
If the process needs to handle 2000 students per week, what should be the largest processing time
per student (in minutes) at the bottleneck stage? 40/2000*60 = 1.2 minutes
Question 2 (7 points: 3, 1, 3)
A process has 3 stages as shown. P1, P2 etc. are the labels for the machine and the other number in the box
is the machine capacity in units per hour.
(a)
What is the cycle time for each stage
(in minutes per unit)?
Round off
to 2 decimal places.
Stage 1  P1: 1/15*60 = 4.00 [min/unit]
Stage 2 R1: 1/15*60 = 4.00 [min/unit]
Stage 3 M1: 1/12*60 = 5.00 [min/unit]
(b)
Identify the bottleneck stage
: Stage 3
(c)
If you can add only one machine in parallel at the bottleneck stage,
what should be the largest cycle
time for the new machine
so that you increase the process capacity as much as possible?
A machine should be added to stage 3 with the capacity of 3 [units/hour] i.e. the largest cycle
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 Spring '10
 panwalker

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