8. The demand for subassembly S is 150 units in week 7. Each unit of S requires 1 unit of T and 1 unit of U. Each unit of T requires 2 units of V, 2 units of W, and 2 units of X. Finally, each unit of U requires 1 unit of Y and 2 units of Z. One firmmanufactures all items. It takes 2 weeks to make S, 2 weeks to make T, 2 weeks to make U, 1 week to make V, 2 weeks to make W, 1 week to make X, 2 weeks to make Y, and 2 weeks to make Z.1Click the icon to view the product structure and the time-phased product structure.In addition to 150 units of S, there is also a demand for 30 units of U, which is a component of S. The 30 units of U are needed for maintenance purposes. These units are needed in week 6. Modify the gross material requirements plan to reflectthis change (type 0 if the input box is not used).1: More InfoLevel01ItemSTUVWXYZGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseGross reqOrder releaseThe product structure.T(1)SU (1)2 V(2) W(2) X(2) Y(1) Z(2)23Week45671 2VNXZWLead Time(weeks)YTUThe time-phased product structure.3 4Time in weeks-LO252212122-SC6S7+

The gross requirement is the scheduling method, a plan to schedule the material and components…

Answered: The demand for subassembly S is 150…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Given the following MRP matrix for Item D: The planned order release for period 3 is
The product structure for product X is illustrated below. Level 0 Level 1 4 Level 2 Level 3 Part H B C D H K M N X Z с K B Lead Time (in weeks) 1 1 3 2 3 2 3 3 4 M D N The lead time for manufacturing any number units for an item and the required number of units for the lower level part in the product structure are reported in the following table. For example, each unit of Part X requires 1 units of Part C and, in turn, each unit of Part C requires 2 units of Part H and 2 units of Part K. 2 1 4 2 2 2 4 1 2 Required number of units X Z H K 100 units of product X are to shipped at the end of week 25. There is no inventory on hand. How many units of part N are required for production? 3200 Specify only the number.
EX 6-23 (Algo) The CyClon project team has started... The Cyclon project team has started gathering the information necessary to develop a project network-predecessor activities and activity time in days. The results of their meeting are found in the following table: Activity Description A B C D K Y G H I J K L Design Procure prototype parts Fabricate parts Assemble prototype Laboratory test Pield test Adjust design order stock components Order custom components Assemble test production unit Test unit Document results Duration Predecessor 11 6 What is the ES for Activity D? What is the LF for Activity H? What is the slack for Activity C? What is the slack for Activity H? What is the slack for Activity 17 What is the length of the project? What is the critical path? 8 9 10 9 10 11 A A B, C D F G G H, I 3 Part A. Draw the project network. Compute the early, late, and slack times for each activity. time periods Part B. Upon further review the team recognize that they missed three…
What is meant when we say that the least total cost (LTC) and least unit cost (LUC) methods are dynamic lot-sizing techniques?
Each unit of A is composed of one unit of B, two units of C, and one unit of D. C is composed of two units of D and three units of E. Items A, C, D, and E have on-hand inventories of 20, 10, 20, and 10 units, respectively. Item B has a scheduled receipt of 10 units in Period 1, and C has a scheduled receipt of 50 units in Period 1. Lot-for-lot (L4L) lot sizing is used for Items A and B. Item C requires a minimum lot size of 50 units. D and E are required to be purchased in multiples of 100 and 50, respectively. Lead times are one period for Items A, B, and C, and two periods for Items D and E. The gross requirements for A are 30 in Period 2, 30 in Period 5, and 40 in Period 8. Find the planned-order releases for all items
Product Z is made from three units of A, two of B, and four of C. A, in turn, is made of one unit of C and five of D. A customer order was received for 200 units of Z in Week 8. (Hint: You will need to use "low-level coding", i.e., pull each item to the lowest level it appears on the BOM.) Item Lot Size On Hand Lead Time Z LFL 30 3 A LFL 40 1 B LFL 100 4 C 1000 50 3 D 500 2000 3 a. Show the Bill of Materials b. Develop MRP schedules showing gross/net requirements and planned order releases/receipts for each item.
One 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.
Which operation is the bottleneck of this process? a. Stocking b. Pricing c. Spotting d. Shipping e. Impossible to determine
Given the following MRP matrix for Item D, the planned order receipt for period 4 is ITEM: D Period Lot Size: Mul 100 LT: 1 1 2 3 4 6 Gross Requirements Schedule Receipts Project on Hand Net Requirements Planned Order Receipts 60 90 150 150 180 270 120 120 Planned Order Releases 100 200 220 DELL
What is the net requirement using an MRP program if the gross requirement is 1,000 and the inventory on hand is 500?
9. Item WWW is produced in a transfer line. Determine daily output rate given the following processing times and unit transfer strategy between the machines. 1 process 3nd process 5th process Machine J process 4th process Machine LL Machine D Machine RR Machine S Unit process .15 hr |.12 .18 .16 .12 time Note: 2 shifts work. 8 hours/shift. 10. How can we increase the output in the above problem? Discuss and show results. 11. Item YYY is processed on machine M1 first and then machine M2. The desired annual output is 5000 units. Unfortunately, there are quality issues and the scrap factor for M1 is 0.05 and for M2 is 0.10. Determine how many units we have to start the process with. 12. Repeat problem 11 if we could recover 2% of scraps on M1 and 4% of scraps on M2.
Given the following MRP matrix for Item D: The planned order receipt for period 6 is

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