The master schedule for parent product M is as follows:
Week
Gross Requirements
1
3400
2
4200
3
5200
4
6300
5
7500
6
3100
7
4600
8
5400
9
6600
10
7800
The policy is to carry no stock on-hand for m1, which is a subassembly of M. Develop the planned-order release schedule for m1, assuming a lot-for-lot sizing policy and lead time LT = one week.
Use the information in Problem 5 to address the decision of the MRP manager who wants to try 2-period ordering. She requests that you compare your lot-for-lot plan with the 2-period plan. Also, she asks, “Would it help to have some SOH”? Make the comparison and answer the question.
9. Develop the lot-for-lot ordering scenario for DVR-alpha part Q, using Table 15-5 in the text and the product-structure tree in Figure 15-12. Note: Q appears more than once in the product-structure tree. Also, observe the number of units of Q that are required for each unit of X and for each unit of B. The lead times for both X and B are zero because they can be assembled immediately. The lead time for Q is one week. Part Q has no other parents or end-items than DVR-alpha.
In addition to providing the quantitative ordering instructions, evaluate the performance of the ordering system.
Hint: Include in the planned-order release chart levels 0, 1, and 2.
Table 15-5 Master DVR Schedule—Alpha and Beta Models
Week
Net requirements
1
2
3
4
5
6
7
8
9
10
Alpha model
–
60
–
–
–
80
–
–
40
–
Beta model
–
–
50
–
–
20
–
–
–
60
15-12
The matrix of total costs per day for jobs 1, 2, and 3—if assigned at facilities A, B, and C of the Rivet and Nail Factory—is
Facilities
A
B
C
Jobs
1
$1,000
$900
$1,200
2
800
700
900
3
1,500
1,800
2,000
What relatively permanent assignments will minimize total costs per day?
The matrix of costs per part for jobs 4, 5, and 6—if assigned at facilities A, B, and C of the Rivet and Nail…