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OSCM 373: Lean Operations questions well answered to pass
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OSCM 373: Lean Operations questions well answered to pass
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OSCM 373: Lean OperationsA manager wants to determine the number of containers to use for incoming parts for a kanban system
to be installed next month. The process will have a usage rate of 86 pieces per hour. Because the process
is new, the manager has assigned an inefficiency factor of .21. Each container holds 56 pieces and it takes
an average of 95 minutes to complete a cycle. How many containers should be used? As the system
improves, will more or fewer containers be required? - correct answer ✔✔D= 86 pieces/hr
T= 95 mins --> 1.58 hr
X= 0.21
C= 56
N= (D*T(1 + X))/ C
= 3 containers
- fewer containers be required because fi system improves faster processing times for the part held by
the
container decrease the number of containers in use in a Kanban system.
A JIT system uses kanban cards to authorize movement of incoming parts. In one portion of the system, a
work center uses an average of 105 parts per hour while running. The manager has assigned an
inefficiency factor of .35 to the center. Standard containers are designed to hold 3 dozen parts each. The
cycle time for parts containers is about 90 minutes. How many containers are needed? - correct answer
✔✔D= 105 parts
T= 90 mins --> 1.5 hrs
X= 0.35
C= 3*12 --> 36
N= (D*T(1 + X))/ C
=6
Compute the takt time for a system where the total time per shift is 440 minutes, there is one shift, and
workers are given 2 13-minute breaks and 35 minutes for lunch. Daily demand is 349 units. - correct
answer ✔✔Total time= 480
Breaks= 2*13 = 26
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