CHAPTER 6
Solution
2. P301 COMPUTER
a.
P301
Computer
P
Processor
Unit
V
Video Unit
M
Memory
Board
(3 Req.)
C
Ram Chip
(4 Req.)
S
Switch
A
Arithmetic
Board
(2 Req.)
B
Box Casing
X
Board
K
Keyboard
Unit
Z
MicroProcessor
S
Switch
(4 Req.)
R
Rom Chip
(2 Req.)
S
Switch
b., c.
Item
A - Arithmetic Board
B - Box Casing
C - Ram Chip
K - Keyboard Unit
M - Memory Board
P - Processor Unit
R - ROM Chip
S - Switch
V - Video Unit
X - Board Type X
Y - Board Type Y
Low-Level Code
2
2
3
1
2
1
3
3
1
3
3
6-1
Quantity Required
for One Unit*
2
1
12
1
3
1
4
9
1
3
2
Y
Board
Z - Microprocessor
3
*Assuming no inventory for any item
2
6. MULTI-LEVEL ITEM EXAMPLE
A
B
(2 Req.)
C
C
Part: A
Week
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = 20, LT = 1, SS = 0
21
1
5
2
15
3
18
4
8
5
12
6
22
16
1
20
3
20
15
3
20
1
1
2
40
3
40
4
5
40
6
32
52
40
12
12
40
12
12
12
1
40
2
20
3
60
4
5
20
6
30
10
60
10
10
20
10
10
Part: B
Week
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = 40, LT = 2, SS = 0
20
Part: C
Week
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = LFL, LT = 1, SS =10
70
6-2
7. TRACI’S TOMAHAWK
Product Structures
A
G
(2 required)
C
F
D
G
H
Part A
Week
Gross Requirement
Scheduled Receipt
Projected Available Balance
Planned Order Release
Lead Time = 1, Q = L4L, SS = 0
10
1
5
5
10
2
3
3
10
4
15
5
15
7
3
0
15
0
15
0
1
10
2
20
15
0
15
3
25
4
15
5
5
0
5
0
0
2
21
3
35
4
30
5
24
40
29
20
19
19
Part F
Week
Gross Requirement
Scheduled Receipt
Projected Available Balance
Planned Order Release
Lead Time = 2, Q = L4L, SS = 0
15
5
25
Part G
Week
Gross Requirement
Scheduled Receipt
Projected Available Balance
30
Planned Order Release
Lead Time = 1, Q = multiples of 20, SS = 10
1
25
20
25
20
An order for 20 units must be planned for Part G in period 1 so that safety stock is
maintained in period 3.
6-3
8. Ajax Manufacturing
A
X
B
Y
G
H
Y
(2 Req.)
Z
a.
Part: G
Period
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = LFL, LT = 1, SS = 0
0
1
8
10
2
6
2
8
3
8
4
8
5
8
6
8
7
8
0
8
0
8
0
8
0
8
0
8
0
1
32
10
45
27
2
36
3
36
4
36
5
36
6
36
7
36
9
36
0
36
0
36
0
36
0
0
1
32
10
45
36
2
36
3
36
4
36
5
36
6
36
7
36
10
36
10
36
10
36
10
36
10
10
Part: Y
Period
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = LFL, LT = 2, SS = 0
67
b.
Part: Y
Period
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = LFL, LT = 2, SS = 10
67
1
There will be a past due order of 1 that must be expedited and then the first order would
increase to 36. The other option would be to order 37 in period 1 which would resolve the
safety stock problem in period 3 instead of period 2.
6-4
9. PRODUCT A
Item
A
B
C
D
Inventory
10
40
60
60
Limit of A's by Item
a
b
c
10
10
10
20
40
40
30
30
25
60
40
60
Start
10
40
30
60
The table above provides the basis for answering the three parts of the question. There are two
difficulties that students are likely to have with this problem. The first is that you must add the
restriction caused by A itself plus the minimum from B, C, or D. The second is they will forget
that it takes 2 Cs to make an A. The answers are:
a. 30 units of A (10 A’s in inventory + 20 A’s can be built)
b. 40 units of A (10 A’s in inventory + 30 A’s can be built)
c. 37 units of A (10 A’s in inventory + 27 A’s can be built)
13.
Toaster
Week
Gross Requirements
Scheduled Receipts
Projected Available Balance
Planned Order Release
Q = 50, LT = 2, SS = 5
10
1
20
50
40
50
2
20
3
35
4
25
5
35
6
35
7
35
8
35
20
35
50
10
50
25
40
50
5
20
Toaster
Week
2
3
4
5
6
7
8
9
Gross Requirements
20
35
25
35
35
35
35
40
Scheduled Receipts
50
Projected Available Balance
57* 37
52
27
42
7
22
37
47
Planned Order Release
50
50
50
50
Q = 50, LT = 2, SS = 5
*57 = 10 (Previous) + 45 (Receipt) + 7 (Adjustment) - 5 (Disbursement)
**To get the required on-hand inventory at the beginning of week 2 need to release an
order for 50 at the beginning of week 1.
6-5