First shift employees at GE Appliances work from 2pm-10pm Monday through Friday assembling washing machines. Everyone on the assembly line is allowed a 30 minute lunch and two 15 minute breaks. The assembly line stops while associates are on lunch or break. The processes of the assembly line have the following dependencies:
Task Predecessor Average Time (sec)
A none 30
B none 15
C A 20
D B 15
E D 10
F E 10
G C, F 30
The Plant Manager needs first shift to achieve an output of 600 washing machines each day.
Compute the Takt time for the line.
What is the theoretical minimum number of workstations?
Draw the precedence diagram, and then create work stations. Follow the “most following tasks” heuristic rule to assign these tasks to the work stations. Show which tasks are assigned to each workstation
Compute the efficiency and percent idle time for the system
What is the maximum output that could be achieved by a single assembly line in 7 hours?