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Calculate the theoretical minimum number of workstations

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Reference no: EM133036722

Problem: LWT is setting up workstations for a new contract they just received. The line will run 12 hours a day, and will need to produce 400 windows a day (400 outputs). The various tasks, along with their required times and immediate predecessors, are shown below:       

Task

Tasks Time  (seconds) 

Immediate Predecessor(s)

A

70

none

B

32

none

C

49

none

D

19

A, B

E

38

B, C

F

68

D

G

14

D

H

22

D

I

11

E

J

45

G, H, I

K

10

F, G, H

L

22

K, J

M

24

K, J

Total Tasks Time: 

?

seconds
  1. Calculate - What is the Takt Time?
  2. Calculate the theoretical minimum number of workstations needed? (Wmin is same as Wactual)
  3. Suppose that management ignores the Takt Time and decides to set up four workstations, as follows:

Workstations 

Tasks Time (seconds) 

Task Time per Workstation 

Workstation 1:

Activities A and C

?

Workstation 2: 

Activities B, D, E, G , H

?

Workstation 3:

Activities F, I and K

?

Workstation 4:

J, L and M

?

Total Tasks Time

 

? 
  1. Calculate the Total Task time for each workstation.
  2. Determine the cycle time for this line (CT = Maximum amount of time spent in any workstation)
  3. Calculate the idle time (IT)
  4. Calculate the percent idle time (% IT)
  5. Calculate the Efficiency Delay (ED)

Reference no: EM133036722

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