Question

Alpha is the end product. It is composed of 3H, K, and 2M. Each H is composed of 2P and 2W. Each K is composed of 2S and 2B. Each M is composed of 4W and 2S. Use the information in the table to answer the following questions. All parts are lot for lot unless noted.

Part Alpha H K M P W S B

LT 2 4 3 2 1 2 1 1

OnHand 0 15 30 30 10 30 30 0

Lot Size 20 20

What is the gross requirement for S to assemble 20 units of Alpha?


What is the net requirement for H to assemble 20 units of Alpha?


If 20 units of Alpha need to ship in week 10, what week must the order be started?


Use a blank MRP form to create a net plan for part S if 50 units of Alpha need to ship by week 10. Then answer the following:


The first order release for S is a quantity of ____ in week .


The second order release for s is a quantity of________ in week .

Answer 1

To assemble 20 units of Alpha, the gross requirement for S is 80 units, and the net requirement for H is 60 units. The order for 20 units of Alpha must be started in week 8 to ship by week 10. If 50 units of Alpha need to ship by week 10, the first order release for S is a quantity of 20 units in week 8, and the second order release for S is a quantity of 30 units in week 9.

Step-by-step explanation:

Gross Requirement for S:

To assemble 20 units of Alpha, we need to first determine the composition of Alpha in terms of S. From the given information, we know that each M is composed of 2S. And each Alpha is composed of 2M, so each Alpha will require 4S (2S from each M). Since we need to assemble 20 units, the gross requirement for S is 20 x 4 =

80 units of S

.

Net Requirement for H:

To assemble 20 units of Alpha, we need to determine the net requirement for H. From the given information, we know that each Alpha is composed of 3H. So, each Alpha will require 3H. Since we need to assemble 20 units, the net requirement for H is 20 x 3 =

60 units of H

.

Order Start Week:

To determine the week the order must be started to ship 20 units of Alpha in week 10, we need to consider lead time (LT) and lot size. The given LT for S is 2 and the lot size for S is 20. Since we are shipping in week 10, we need to account for the lead time. If we start the order in week 8, it will have enough time to be produced by week 10. Therefore, the order must be started in week

8

.

Net Plan for S to Ship 50 Units of Alpha by Week 10:

Using a blank MRP form, we can create a net plan for part S to ship 50 units of Alpha by week 10. Since the given lot size for S is 20, we can calculate the number of orders required to ship 50 units by dividing 50 by 20, which is 2. So, we would need to place 2 orders for S. The first order release for S would be in week

8

with a quantity of 20 units, and the second order release for S would be in week

9

with a quantity of 30 units.