Because of the expected high demand for Mach 10, Creative Leisure has decided to increase manufacturing time available to produce the Mach 10 (see Problem).
a) If demand remained the same but 300 minutes were available each day on the assembly line, how many workstations would be needed?
b) What would be the efficiency of the new system, using the actual number of workstations from (a)?
c) What would be the impact on the system if 400 minutes were available?
Problem - The Mach 10 is a one-person sailboat manufactured by Creative Leisure. The final assembly plant is in Cupertino, California. The assembly area is available for production of the Mach 10 for 200 minutes per day. (The rest of the time it is busy making other products.) The daily demand is 60 boats. Given the information in the table,
a) Draw the precedence diagram and assign tasks using five workstations.
b) What is the efficiency of the assembly line, using your answer to (a)?
c) What is the theoretical minimum number of workstations?
d) What is the idle time per boat produced?
|
Task
|
Performance Time (min)
|
Task Must Follow Task Listed Below
|
|
A
|
1
|
-
|
|
B
|
1
|
A
|
|
C
|
2
|
A
|
|
D
|
1
|
C
|
|
E
|
3
|
C
|
|
F
|
1
|
C
|
|
G
|
1
|
D, E, F
|
|
H
|
2
|
B
|
|
I
|
1
|
G, H
|