OPERATIONS MANAGEMENT W/ CNCT+
12th Edition
ISBN: 9781259574931
Author: Stevenson
Publisher: MCG CUSTOM
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Chapter 12, Problem 18P
Develop 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 start of week 8. There are currently 15 units of B on hand and 130 of E on hand, and 50 units of H are in production and will be completed by the start of week 2. Lot-for-lot ordering will be used for all items.
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a. One hundred twenty units of end item Z are needed at the beginning of week 7. Prepare a material requirements plan for component C. Take into account that on hand there are 40 units of Z,70 units of A, 100 units of B, and 30 units of C. Also, there is a scheduled receipt of 20 units ofcomponent C in week 4. Lead times are two weeks for Z and B, and one week for the other components. Lot-for-lot ordering will be used for all items
b. Ninety-five units of end item E are needed at the beginning of week 7. Prepare a material requirements plan for component D. Take into account that 5 units of E are currently on hand, as well as50 units of B, 100 units of C, and 80 units of D. Also, 30 units of C have been outsourced and areexpected to arrive in week 4. Lead times are two weeks for E and C, and one week for the othercomponents. Assume lot-for-lot ordering except for D, where multiples of 40 must be used.
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.
Chapter 12 Solutions
OPERATIONS MANAGEMENT W/ CNCT+
Ch. 12.11 - What is ERP?Ch. 12.11 - What are the three main reasons firms adopt ERP?Ch. 12.11 - What are some hidden costs of ERP?Ch. 12.11 - How does ERP fit with e-commerce and supply chain...Ch. 12 - Contrast independent and dependent demand.Ch. 12 - When is MRP appropriate?Ch. 12 - Briefly define or explain each of these terms: a....Ch. 12 - Prob. 4DRQCh. 12 - Prob. 5DRQCh. 12 - What is meant by the term safety time?
Ch. 12 - Prob. 7DRQCh. 12 - Briefly discuss the requirements for effective...Ch. 12 - Prob. 9DRQCh. 12 - How can the use of MRP contribute to productivity?Ch. 12 - Prob. 11DRQCh. 12 - What is lot sizing. what is its goal, and why is...Ch. 12 - Contrast planned-order receipts and scheduled...Ch. 12 - If seasonal variations are present, is their...Ch. 12 - Prob. 15DRQCh. 12 - What are some unforeseen costs of ERP?Ch. 12 - What trade-offs are involved in the decision to...Ch. 12 - Who in the organization needs to be involved in...Ch. 12 - Prob. 3TSCh. 12 - Prob. 1CTECh. 12 - Give one example of unethical behavior involving...Ch. 12 - a. Given the following diagram for a product,...Ch. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Eighty units of end item E are needed at the...Ch. 12 - a. One hundred twenty units of end item Z are...Ch. 12 - A table is assembled using three components, as...Ch. 12 - Eighty units of end item X are needed at the...Ch. 12 - Oh No!, Inc., sells three models of radar detector...Ch. 12 - Assume that you are the manager of a shop that...Ch. 12 - Assume that you are the manager of Assembly, Inc....Ch. 12 - Determine material requirements plans for pans N...Ch. 12 - A firm that produces electric golf carts has just...Ch. 12 - Refer to Problem 12. Assume that unusually mild...Ch. 12 - Using the accompanying diagram, do the following:...Ch. 12 - A company that manufactures paving material for...Ch. 12 - Prob. 16PCh. 12 - The MRP Department has a problem. Its computer...Ch. 12 - Develop a material requirements plan for component...Ch. 12 - How many wheels sets should the manager order?Ch. 12 - When should the wheel sets be ordered?Ch. 12 - Prob. 2.1CQCh. 12 - Prob. 1OTQCh. 12 - Prob. 2OTQCh. 12 - Suppose the company has just received an order for...Ch. 12 - Prob. 4OTQCh. 12 - Prob. 5OTQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardOne unit of A is made of two units of B and one unit of C. B is made of three units of D and one unit of F. C is composed of three units of B, one unit of D, and four units of E. D is made of one unit of E. Item C has a lead time of one week; items A, B, E, and F have two-week lead times; and item D has a lead time of three weeks. Lot-for-lot (L4L) lot sizing is used for items C, E, and F; lots of size 20, 40, and 160 are used for items A, B, and D, respectively. Items A, B, D, and E have on-hand (beginning) inventories of 5, 10, 100, and 100, respectively; all other items have zero beginning inventories. We are scheduled to receive 10 units of A in week 3, 20 units of B in week 7, 40 units of F in week 5, and 60 units of E in week 2; there are no other scheduled receipts. If 20 units of A are required in week 10, use the low-level-coded bill-of-materials (product structure tree) to find thenecessary planned order releases for all components.arrow_forwardGiven the following MRP matrix for Item D: The planned order release for period 3 isarrow_forward
- 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 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_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 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?arrow_forwardThe following table lists the components needed to assemble an end item, lead times (in weeks), and quantities on hand. Item Lead Time Amount on Hand Direct Components End 2 0 L(2), C(1), K(3) L 2 11 B(2), J(3) C 3 15 G(2), B(2) K 3 20 H(4), B(2) B 2 25 J 3 34 G 3 3 H 2 0 Click here for the Excel Data File a. If 43 units of the end item are to be assembled, how many additional units of B are needed? (Hint: You don’t need to develop an MRP plan.) b. An order for the end item is scheduled to be shipped at the start of week 11. What is the latest week that the order can be started and still be ready to ship on time? (Hint: You don’t need to develop an MRP plan.)arrow_forward
- Eighty 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_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_forwardThe following table lists the components needed to assemble an end item. Assume there is no on-hand inventories. Item Direct Components End item A(4), B(5), C(4) A E(3), F(2) B D(3), E(5) C F(4) D E F E(4) If 3 units of the end item are to be assembled, how many units of component E are needed? Input should be an exact number.arrow_forward
- One unit of A is made of one unit of B and one unit of C. B is made of four units of C and one unit each of E and F. C is made of two units of D and one unit of E. E is made of three units of F. Item C has a lead time of one week; Items A, B, E, and F have two-week lead times; and Item D has a lead time of three weeks. Lot-for-lot (L4L) lot sizing is used for Items A, D, and E; lots of size 50, 100, and 50 are used for Items B, C, and F, respectively. Items A, C, D, and E have on-hand (beginning) inventories of 15, 55, 100, and 10, respectively; all other items have zero beginning inventory. We are scheduled to receive 10 units of A in Week 1, 100 units of C in Week 1, and 100 units of D in Week 3; there are no other scheduled receipts.If 50 units of A are required in week 10, use the low-level-coded bill-of-materials (product structure tree) to find the necessary planned-order releases for all components. (Leave the cells blank, whenever zero (0) is required.)arrow_forwardOne unit of A is made of one unit of B and one unit of C. B is made of four units of C and one unit each of E and F. C is made of two units of D and one unit of E. E is made of three units of F. Item C has a lead time of one week; items A, B, E, and F have two-week lead times; and item D has a lead time of three weeks. Lot-for-lot (L4L) lot sizing is used for items A, D, and E; lots of sizes 50, 100, and 50 are used for items B, C, and F, respectively. Items A, C, D, and E have on-hand (beginning) inventories of 20, 50, 100, and 10, respectively; all other items have zero beginning inventory. We are scheduled to receive 10 units of A in week 1, 100 units of C in week 1, and 100 units of D in week 3; there are no other scheduled receipts. If 50 units of A are required in week 10, use the low-level-coded bill-of-materials (product structure tree) to find the necessary planned-order releases for all components.arrow_forwardA firm that produces electric golf carts has just received an order for 200 carts, which must be ready for delivery at the start of week 8. Information concerning the product structure, lead times, and quantities on hand is shown in the following table. Use this information to do each of the following: a. Develop a material requirements plan that will provide 200 golf carts by week 8, assuming lot-for-lot ordering. (Excel)arrow_forward
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