Problem 3.2 - Assume that Product Z is made of two units of A and four units of B. A is made of three units of C and four of D. D is made of two units of E. Lead times for purchase or fabrication of each unit to final assembly are: Z takes two weeks; A. B, C, and D take one week each; and E takes three weeks. Fifty units are required in Period 10. (Assume that there is currently no inventory on hand of any of these items.) 1. Show the bill-of-materials (product structure tree). 2. Develop an MRP planning schedule showing gross and net requirements and order release and order receipt dates (using the Sample MRP schedule worksheet). Problem 3.3 - A Product A is composed of the following elements: - One unit of A is made of three units of B, one unit of C, and two units of D. - B is composed of two units of E and one unit of D. - C is made of one unit of B and two units of E. - E is made of one unit of F. - Items B, C, E, and F have one-week lead times; A and D have lead times of two weeks. - Assume that lot-for-lot (L.AL) lot sizing is used for ltems A, B, and F; lots of size 50, 50, and 200 are used for Items C, D, and E, respectively. - Items C,E, and F have on hand (beginning) inventories of 10, 50, and 150, respectively; all other items have zero beginning inventory. - We are scheduled to receive 10 units of A in Week 2,50 units of E in Week 1, and also 50 units of F in Week 1 . There are no other scheduled receipts. - 30 units of A are required in Week 8 . 1. Show the bill-of-materials (detailed product structure tree). 2. Develop a MRP planning schedule for the liem A. Exercise 3.1 Complete the following table. Exercise 3.2 - Lot Sizing Rules are used to change the frequency of replenishment orders (balanee holding \& ordering costs to order). The most known common rules: are Fixed Order Quantity (FOQ), Economic Order Quantity (EOQ), Periodic Onder Quantity (POQ) and Lotfor-Lot (L4L), Define these 4 rules and give the specificity of each one. Exereise 3.3 - Material requirements planning (MRP) is a system for calculating the materials and components needed to manufacture a product. 1. Give the benefits of MRP. 2. For the example given in the following figure, define each level of the product structure for PI. 3. Calculate the corresponding number of subassemblies and components required to produce 50 units of P1 in the week 8 using the following master scheduling. Problem 3.1 - A manufacturer produces bracket assemblies (X).130 units of (X) are needed The following table indicates the current inventory levels. 1. Create the Product structure tree -or-product tree 2. Using the information provided below, what are the net requirements of each item? 3. The product (X) needs an ftem J. Using the MRP planning schedule for this Item, indieate the correct net requirements, planned ofder receipts, and planned order releases to meet the gross requirements. Lead time is one week. Problem 3.2 - Assume that Product Z is made of two units of A and four units of B. A is made of three units of C and four of D. D is made of two units of E. Lead times for purchase or fabrication of each unit to final assembly are: Z takes two weeks; A. B, C, and D take one week each; and E takes three weeks. Fifty units are required in Period 10. (Assume that there is currently no inventory on hand of any of these items.) 1. Show the bill-of-materials (product structure tree). 2. Develop an MRP planning schedule showing gross and net requirements and order release and order receipt dates (using the Sample MRP schedule worksheet). Problem 3.3 - A Product A is composed of the following elements: - One unit of A is made of three units of B, one unit of C, and two units of D. - B is composed of two units of E and one unit of D. - C is made of one unit of B and two units of E. - E is made of one unit of F. - Items B, C, E, and F have one-week lead times; A and D have lead times of two weeks. - Assume that lot-for-lot (L.AL) lot sizing is used for ltems A, B, and F; lots of size 50, 50, and 200 are used for Items C, D, and E, respectively. - Items C,E, and F have on hand (beginning) inventories of 10, 50, and 150, respectively; all other items have zero beginning inventory. - We are scheduled to receive 10 units of A in Week 2,50 units of E in Week 1, and also 50 units of F in Week 1 . There are no other scheduled receipts. - 30 units of A are required in Week 8 . 1. Show the bill-of-materials (detailed product structure tree). 2. Develop a MRP planning schedule for the liem A. Exercise 3.1 Complete the following table. Exercise 3.2 - Lot Sizing Rules are used to change the frequency of replenishment orders (balanee holding \& ordering costs to order). The most known common rules: are Fixed Order Quantity (FOQ), Economic Order Quantity (EOQ), Periodic Onder Quantity (POQ) and Lotfor-Lot (L4L), Define these 4 rules and give the specificity of each one. Exereise 3.3 - Material requirements planning (MRP) is a system for calculating the materials and components needed to manufacture a product. 1. Give the benefits of MRP. 2. For the example given in the following figure, define each level of the product structure for PI. 3. Calculate the corresponding number of subassemblies and components required to produce 50 units of P1 in the week 8 using the following master scheduling. Problem 3.1 - A manufacturer produces bracket assemblies (X).130 units of (X) are needed The following table indicates the current inventory levels. 1. Create the Product structure tree -or-product tree 2. Using the information provided below, what are the net requirements of each item? 3. The product (X) needs an ftem J. Using the MRP planning schedule for this Item, indieate the correct net requirements, planned ofder receipts, and planned order releases to meet the gross requirements. Lead time is one week
