Operations Management

Operations Management

1. (15 points, Lesson 8) Each unit of A is composed of three units of B and two units of C. B is composed of three units of C and two units of D. Items A, C and D have on-hand inventories of 40, 60 and 200 units respectively. Item B has a scheduled receipt of 100 units in period 1, and C has a scheduled receipt of 200 units in Period 1. Lot-for-lot (L4L) is used for Item A. Item B requires a minimum lot size of 90 units. Items C and D are required to be purchased in multiples of 500 and 200 respectively. Lead times are 1 period for Items A, B, and C, and 2 periods for Items D. The gross requirements for A are 100 in Period 4, 150 in Period 6, and 200 in Period 8. Find the planned order releases for all items to meet the requirements over the next 10 periods.

a. -------------------------------------------------

Construct a product structure tree.

b. Find the planned order releases for item A

Period | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |

ItemALT=1Q=L4L | Gross Requirements | | | | 100 | | 150 | | 200 | | |

| Scheduled Receipts | | | | | | | | | | |

| On hand from prior period | 40 | 40 | 40 | 40 | 0 | 150 | 0 | 0 | 0 | 0 |

| Net requirements | | | | 60 | | 150 | | 200 | | |

| Time-phased Net Requirements | | | 60 | | 150 | | 200 | | | |

| Planned order releases | | | 60 | | 150 | | 200 | | | |

| Planned order delivery | | | | 60 | | 150 | | 200 | | |

c. Find the planned order releases for item B

Period | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |

ItemBLT=1Q>=90 | Gross Requirements | | | 180 | | 450 | | 600 | | | |

| Scheduled receipts | 100 | | | | | | | | | |

| On hand from prior period | | 100 | 100 | 10 | 10 | 0 | 0 | 0 | 0 | |

| Net Requirements | | | 80 | | 440 | | 600 | | | |

| Time-phased Net Requirements | | 80 | | 440 | | 600 | | | | |

| Planned order releases | | 90 | | 440 | | 600 | |...