Reference no: EM133039159

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)