(30 points) Consider the below flow line. The following table provides all the information need for designing Kanban control or CONWIP control on this line. All times are in minutes. The daily demand is known to be 300 units per day. It is also known that the batch size for this line is 20 units per container. The line operates 24 hours each day without breaks. a) Calculate the needed number of production Kanban cards for each station. Use 10% safety factor. (10 pts) b) If the entire line is to be controlled by CONWIP system, what should be the number of cards needed? For this, use 10% safety factor, and assume the card travel time from station 6 to station 1 is 12 minutes. (10 pts) (Hint: The cycle time under CONWHIP system is equal to "Sum of all internal setup times + Kanban waiting time at the receiving post at the last station + Waiting time in the buffer at the last station + Card travel time from the last station to the first station + Kanban waiting time at the ordering post at the first station + Sum of all container transfer time to downstream buffer + Sum of all processing time".) c) Which machine is the bottleneck station on this line? Explain the reason. (Hint: the bottleneck is the one with largest internal setup + unit processing time) (10pts) (30 points) Consider the below flow line. The following table provides all the information need for designing Kanban control or CONWIP control on this line. All times are in minutes. The daily demand is known to be 300 units per day. It is also known that the batch size for this line is 20 units per container. The line operates 24 hours each day without breaks. a) Calculate the needed number of production Kanban cards for each station. Use 10% safety factor. (10 pts) b) If the entire line is to be controlled by CONWIP system, what should be the number of cards needed? For this, use 10% safety factor, and assume the card travel time from station 6 to station 1 is 12 minutes. (10 pts) (Hint: The cycle time under CONWHIP system is equal to "Sum of all internal setup times + Kanban waiting time at the receiving post at the last station + Waiting time in the buffer at the last station + Card travel time from the last station to the first station + Kanban waiting time at the ordering post at the first station + Sum of all container transfer time to downstream buffer + Sum of all processing time".) c) Which machine is the bottleneck station on this line? Explain the reason. (Hint: the bottleneck is the one with largest internal setup + unit processing time) (10pts)
