Week6solution

Week 6 Supply Chain Chapter Questions Problems 14.2, 14.3B, 14.9, and 14.13C Problems 14.2 You are expected to have the gift bags in Problem 14.1 (see below) ready at 5 P.M. However, you need to personalize the items (monogrammed pens, note pads, literature from the printer, etc.). The lead time is 1 hour to assemble 200 Js once the other items are prepared. The other items will take a while as well. Given the volunteers you have, the other time estimates are item K (2 hours), item L (1 hour), and item M (4 hours). Develop a time-phased assembly plan to prepare the gift bags. Problems 14.1: You have developed the following simple product structure of items needed for your gift bag for a rush party for prospective pledges in your organization. You forecast 200 attendees. Assume that there is no inventory on hand of any of the items. Explode the bill of material. (Subscripts indicate the number of units required.) Solution: Exploding the bill of material yields the following: Item J: 200 units Item K: 200 * 1 = 200 units Item L: 200 * 4 = 800 units Item M: 200 * 2 = 400 units. Problem 14.3B The demand for subassembly S is 100 units in week 7. Each unit of S requires 1 unit of T and 2 units of U. Each unit of T requires 1 unit of V, 2 units of W, and 1 unit of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 1 week to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, 2 weeks to make Y, and 1 week to make Z. b. Prepare a time-phased product structure. Problem 14.9 Your boss at Scott Sampson Products, Inc., has just provided you with the schedule and lead times for the bracket in Problem 14.8 (see below). The unit is to be prepared in week 10. The lead times for the components are bracket (1 week), base (1 week), spring (1 week), clamp (1 week), housing (2 weeks), handle (1 week), casting (3 weeks), bearing (1 week), and shaft (1 week). 14.8 As the production planner for Scott Sampson Products, Inc., you have been given a bill of material for a bracket that is made up of a base, two springs, and four clamps. The base is assembled from one clamp and two housings. Each clamp has one handle and one casting. Each housing has two bearings and one shaft. There is no inventory on hand. a. Prepare the time-phased product structure for the bracket. b. In what week do you need to start the castings? Problem 14.13C Electro Fans has just received an order for one thousand 20-inch fans due week 7. Each fan consists of a housing assembly, two grills, a fan assembly, and an electrical unit. The housing assembly consists of a frame, two supports, and a handle. The fan assembly consists of a hub and five blades. The electrical unit consists of a motor, a switch, and a knob. The following table gives lead times, on-hand inventory, and scheduled receipts. c. Prepare a net material requirements plan.