Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
12th Edition
ISBN: 9780134741062
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 29P
The bill of materials and the data from the inventory records for product A are shown in Figure 11.47. Assume that the MPS start quantities for A are 50 units in weeks 1, 2, and 3, and 150 units in weeks 6 and 8. Derive an MRP plan for the components going into product A using the data in Table 11.17.
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Product A is an end item and is made from two units of B and four of C. B is made of three units of D and two of E. A has a lead time of 1 week, B,C AND E have a lead time of 2 weeks and D and F have a lead time of 3 weeks. Assume we are using L4L.
question: If 100 units of A are required in Week 10, develop the MRP schedule, specifying when items are to be ordered and recieved. There are currently no units of inventory on hand.
A table is assembled using three components, as shown in the accompanying product structure tree.The company that makes the table wants to ship 100 units at the beginning of day 4, 150 units atthe beginning of day 5, and 200 units at the beginning of day 7. Receipts of 100 wood sections arescheduled at the beginning of day 2. There are 120 legs on hand. There are 60 braces on hand. Leadtimes (in days) for all items are shown in the following table. Prepare a material requirements planusing lot-for-lot ordering.
A partially completed inventory record for the motor sub-assembly is shown in Figure 11.39.a. Complete the last three rows of the record by using theL4L rule.b. Complete the last three rows of the record by using thePOQ rule with P = 2.
c. Complete the last three rows of the record by using thePOQ rule with P = 2.d. If it costs the company $1 to hold a unit in inventory fromone week to the next, and the cost to release an order is$50, which of the lot sizing rules used above will providethe lowest inventory holding + order release cost?
Chapter 11 Solutions
Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
Ch. 11 - Consider the master flight schedule of a major...Ch. 11 - For an organization of your choice, such as where...Ch. 11 - Consider a service provider that is in the...Ch. 11 - Complete the MPS record in Figure 11.29 for a...Ch. 11 - Complete the MPS record in Figure 11.30 for a...Ch. 11 - Prob. 3PCh. 11 - Figure 11.31 shows a partially completed MPS...Ch. 11 - Tabard Industries forecasted the following demand...Ch. 11 - Figure 11.32 shows a partially completed MPS...Ch. 11 - The forecasted requirements for an electric hand...
Ch. 11 - A forecast of 240 units in January, 320 units in...Ch. 11 - An end items demand forecasts for the next 6 weeks...Ch. 11 - An end items demand forecasts for the next 10...Ch. 11 - Consider the bill of materials (BOM) in Figure...Ch. 11 - Product A is made from components B, C, and D....Ch. 11 - What is the lead time (in weeks) to respond to a...Ch. 11 - Product A is made from components B and C. Item B,...Ch. 11 - Refer to Figure 11.23 and Solved Problem 1. If...Ch. 11 - The partially completed inventory record for the...Ch. 11 - The partially completed inventory record for the...Ch. 11 - The partially completed inventory record for the...Ch. 11 - Figure 11.38 shows a partially completed inventory...Ch. 11 - A partially completed inventory record for the...Ch. 11 - The BOM for product A is shown in Figure 11.40,...Ch. 11 - The BOMs for products A & B and data from the...Ch. 11 - Figure 11.42 illustrates the BOM for product A....Ch. 11 - The following information is available for three...Ch. 11 - Figure 11.44 shows the BOMs for two products, A...Ch. 11 - The BOM for product A is shown in Figure 11.45....Ch. 11 - Refer to Solved Problem 1 (Figure 11.23) for the...Ch. 11 - The bill of materials and the data from the...Ch. 11 - The bill of materials and the data from the...Ch. 11 - The McDuff Credit Union advertises their ability...Ch. 11 - Suppose that the POQ for item B is changed from 3...Ch. 11 - As the on-hand inventory for item C increases from...Ch. 11 - As the fixed order quantity (FOQ) for item D...Ch. 11 - As the lead time for item C changes, what happens...
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- The three tables above show the master production schedule and the bill of materials of part A, and the inventory records of all the parts. There are no scheduled receipts. Given this information, what is the net requirement of part A in Week 4?arrow_forwardGiven the product structure, master productionschedule, and inventory status in Figure 14.13, and assuming therequirements for each BOM item is I:a) develop a gross requirements plan for Item C;b) develop a net requirements plan for Item C.arrow_forwardEighty units of end item E are needed at the beginning of week 6. Three cases (30 units per case) of Jhave been ordered and one case is scheduled to arrive in week 3, one in week 4, and one in week 5.Note: J must be ordered by the case, and B must be produced in multiples of 120 units. There are 60 unitsof B and 20 units of J now on hand. Lead times are two weeks each for E and B, and one week for J.E a. Prepare a material requirements plan for component J.b. Suppose that in week 4 the quantity of E needed is changed from 80 to 70. The planned-order releasesthrough week 3 have all been executed. How many more Bs and Js will be on hand in week 6?arrow_forward
- The BOM for product A is shown in Figure 2, and data from the inventory records are shown in Table 3. In the master production schedule for product A, the MPS start row has 150 units in week 3 and 300 in week 5. Develop the material requirements plan for the next 6 weeks for items B, C, and D.arrow_forwardA partially completed inventory record for the motor sub-assembly is shown in Figure 11.39. a. Complete the last three rows of the record by using the L4L rule. b. Complete the last three rows of the record by using the POQ rule with P = 2. c. Complete the last three rows of the record by using the POQ rule with P = 2. d. If it costs the company $1 to hold a unit in inventory from one week to the next, and the cost to release an order is $50, which of the lot sizing rules used above will provide the lowest inventory holding + order release cost?arrow_forwardDevelop a material requirements plan for component H. Lead times for the end item and each component except B are one week. The lead time for B is three weeks. Sixty units of A are needed at the startof week 8. There are currently 15 units of B on hand and 130 of E on hand, and 50 units of H are inproduction and will be completed by the start of week 2. Lot-for-lot ordering will be used for all items.arrow_forward
- An end item’s demand forecasts for the next 6 weeks are 30 units, followed by forecasts of 25 units for weeks 7 through 10. The current on-hand inventory is 60 units. The order policy is to produce in lots of 100. The booked customer orders for the item, starting with week 1, are 22, 30, 15, 11, 0, 0, 9, 0, 0, and 0 units. The lead time is 2 weeks.a. Develop an MPS for this end item.b. The marketing department has received six orders for this item in the following sequence:Order 1 is for 40 units to be delivered in period 3Order 2 is for 60 units to be delivered in period 4Order 3 is for 70 units to be delivered in period 6Order 4 is for 40 units to be delivered in period 3Order 5 is for 20 units to be delivered in period 5Order 6 is for 115 units to be delivered in period 9Assuming that the prospective MPS you developed in part (a) does not change, which orders would you be able to accept based on the available to promise (ATP)?arrow_forwardGiven the following MRP matrix for Item D: The planned order release for period 3 isarrow_forwardThe MRP Department has a problem. Its computer “died” just as it spit out the following information: Planned order release for item J27 = 640 units in week 2. The firm has been able toreconstruct all the information they lost except the master schedule for end item 565. The firm isfortunate because J27 is used only in 565s. Given the following product structure tree and associated inventory status record information, determine what master schedule entry for 565 wasexploded into the material requirements plan that killed the computer.arrow_forward
- The BOM for product A is shown in Figure 11.40, and datafrom the inventory records are shown in Table 11.9. In theMPS for product A, the MPS start row has 100 units in week 3and 200 in week 6. Develop the material requirements planfor the next 6 weeks for items C, D, and E. a. Develop the material requirements plan for the next6 weeks for items C, D, and E.b. What specific managerial actions are required inweek 1?arrow_forwardIn a MRP problem, A is a MPS item. Every A requires 2 B’s and 3 C’s. Every B requires 5 C’s. All lead times are two periods. All initial inventory values are 0. Use lot-for-lot method for order quantities for all items. What is the low level code (LLC) for B and C?arrow_forwardOne unit of Part C is used in item A and in item B. Currently, we have 10 As, 20 Bs, and 100 Cs in inventory. We want to ship 60 As and 70 Bs. How many additional Cs do we need to purchase?arrow_forward
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