Question 4

Central Sugars Refinery Sdn Bhd (CSR) is one of the leading quality sugar products in Malaysia in this new century. It wants to set up an assembly line to make its operations more efficient and plans to use line balancing with the incremental utilization heuristic. The demand for sugar supplies is 20 per hour, and the productive time per hour is 40 minutes. The following table provides details on its operation (with time in minutes):

T a s k Task that must Time to perform task immediately

precede

A

0.56 B A 0.34

C

A 0.11 DA0.09 E B, C 0 . 4 3 F

D 0.22 G E 0.62

F, G

0.35 H 0.21 J

H 0.57 K 1, J 0.33

a) Compute the cycle time.

(2 Marks) b) Compute the theoretical minimum number of workstations.

(2 Marks) c) Draw a precedence diagram for the production line to show precedence relationships.

d) Use the longest task time heuristic to balance the production line.

e) Summarize the assignment of tasks to workstations on the production line. f) C o m p u t e the utilization of the production line.

(2 Marks) (10 Marks)

(2 Marks) (2 Marks)

* END OF QUESTION PAPER *

5

(TOTAL: 20 Marks)

Central Sugars Refinery Sdn Bhd (CSR) is one of the leading quality sugar products in Malaysia in this new century. It wants to set up an assembly line to make its operations more efficient and plans to use line balancing with the incremental utilization heuristic. The demand for sugar supplies is 20 per hour, and the productive time per hour is 40 minutes. The following table provides details on its operation (with time in minutes): a) Compute the cycle time. (2 Marks) b) Compute the theoretical minimum number of workstations. (2 Marks) c) Draw a precedence diagram for the production line to show precedence relationships. (2 Marks) d) Use the longest task time heuristic to balance the production line. (10 Marks) e) Summarize the assignment of tasks to workstations on the production line. (2 Marks) f) Compute the utilization of the production line. (2 Marks) (TOTAL: 20 Marks)