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21.y E D CRIICAL PATH ACDE PROJECT DURATION 279 O
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John is installing a production line in the kitchen of his successful restaurant “Light of the World” to make vanilla soufflé with caramel sauce. He figures his layout can be broken down into the following tasks: A. Egg separation – 8.5 min. B. Flour, milk, vanilla, egg yolk and sugar blend – 6.5 min. C. Fold egg whites into blend – 2.0 min. D. Bake – 8.9 min. E. Remove from oven, apply topping, garnish, stage, deliver – 8.0 min. Task A and Task B have no predecessors. Task C’s predecessors are Task A and Task B. Task D’s predecessor is Task C. Task E's predecessor is Task D. i. Please determine his desired cycle time in minutes based on an output of 30 soufflés per evening, assuming he starts at 5:30 pm and ends at 10:00 pm. a. 20 minutes b. 10 minutes c. 5 minutes d. 9 minutes ii. Please determine the minimum number of work stations he needs. a. 1 workstation b. 3 workstations c. 4 workstations d. 2 workstations iii. Please group the tasks into workstations based on Line Balancing principles. a. Workstation 1: Task A, Workstation 2: Tasks B and C, Workstation 3: Task D, Workstation 4: Task E b. Workstation 1: Tasks A,B and C; Workstation 2: Tasks E; Workstation 3: Task E c. Workstation 1: Tasks A and B; Workstation 2: Tasks C, D and E d. Workstation 1: Task A and B, Workstation 2: Task C, Workstation 3: Task D, Workstation 4: Task E iv. Please determine the % Balance Delay a. 8.5% b. 5.8% c. 13.5% d. 84.2% v. Please determine the % Efficiency a. 68.5% b. 86.5% c. 94.2% d. 13.5%
21.y E D CRIICAL PATH ACDE PROJECT DURATION 279 O
३ ,,