Managing Supply Chain and Operations 1st Edition by Thomas Foster ,Scott Sampson,Cynthia Wallin,Scott Webb

Exercise 7

Roberta Rodriguez has been assigned the responsibility of managing the new layout design for her company's production facility in Tennessee. This redesign involves an analysis of the existing layout, identifying and analyzing improved layout solutions, selecting new equipment, designing the new layout, modifying the existing plant, and implementing the new production process. The company would like to complete the project as expeditiously as possible because the demand for its products is strong and no production capacity will be available at Roberta's plant during the modification. Roberta has been meeting with plant management and engineers, and the following tasks and estimated task times required to complete the changeover have been identified: Questions
1. Draw the network diagram for the project
2. Compute the expected activity times and activity time variances for each task.
3. Identify the projects critical path.
4. For what project duration could Roberta be 90 percent certain of completing the layout redesign project?
5. Which tasks, if any, would you recommend crashing?