Management Chapter 4 Homework Lot Size 20 Part Lead Time Weeks Lot | Course Paper

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33

MATERIAL REQUIREMENTS PLANNING

CHAPTER 4

ANSWERS TO PROBLEMS

4.1 Each X requires 2 As.

4.2

E (2)

F (1)

G 3(3)

F (3)

H (2)

G (4)

Number of Gs required.

Each A requires 2 Bs

A

C (4)

D (4)

B (2)

34

4.3

Week 1 2 3 4 5

Part A

Lead time: 1

Planned order

receipt

200

200

4.4

Week 1 2 3 4

Gross requirements

20

15

15

20

35

4.5

Week 1 2 3 4 5

Part A Gross requirements

Projected available

100

0

Part B Gross requirements

200

Part C Gross requirements

100

Part D Gross requirements

Projected available

380

0

Part E Gross requirements

Projected available

180

0

Part F Gross requirements

100

36

4.6

Week 1 2 3 4

Gross requirements

Scheduled receipts

20

65

100

35

25

4.7

Week 1 2 3 4

Gross requirements

Scheduled receipts

30

50

25

10

10

37

4.8

Week 1 2 3 4 5

Part H

Lead time

Gross requirements

Scheduled receipts

Projected available

60

0

0

80

0

Part I

Gross requirements

Scheduled receipts

120

120

160

Part J

Gross requirements

Scheduled receipts

320

Part K

Gross requirements

Scheduled receipts

480

38

4.9

Part Y

Lead time 2

weeks

Lot Size: 50

Week

1 2 3 4

Gross

requirements

Scheduled

30

30

Part Z

Lead time 1 week

Lot Size: 100

Week

1 2 3 4

Gross

requirements

100

39

4.10

Week 1 2 3 4 5

Part A

Gross requirements

Scheduled receipts

100

Part B

Gross requirements

Scheduled receipts

100

200

Part C

Lead time:

Gross requirements

Scheduled receipts

Projected available

100

0

0

Part D

Gross requirements

Scheduled receipts

300

Part E

Gross requirements

Scheduled receipts

100

Part F

Gross requirements

Scheduled receipts

100

0

40

4.11

Week 1 2 3 4 5

Part X

Lead time:

Gross requirements

Scheduled receipts

Projected available

15

20

10

15

10

15

Part Y

Gross requirements

Scheduled receipts

60

60

Part Z

Gross requirements

Scheduled receipts

90

40

Part W

Gross requirements

Scheduled receipts

50

4.12 Item A B C D E F

4.13 Item A B C D E F G H J

41

4.14

Low-

Level

code

Week 1 2 3 4 5

Part A

Gross

requirements

Scheduled receipts

60

70

Part F

Gross

requirements

Scheduled receipts

Part B

Gross

requirements

Scheduled receipts

60

70

Part C

Lead

Gross

requirements

Scheduled receipts

Projected

120

120

100

140

42

Part D

Lead

Gross

requirements

Scheduled receipts

Projected

100

300

140

200

Part E

Gross

requirements

Scheduled receipts

100

140

The low-level code for part D is 2. There is a planned order release of 300 for part D in week 1. There

are no planned order releases for part E. There is a planned order release of 100 for Part C in week 1 and

140 in week 2.

Low-

Level

code

Week 1 2 3 4 5

Part A

Gross

requirements

100

50

Part B

Gross requirements

Scheduled receipts

300

80

210

100

43

4.15

Part C

Gross requirements

Scheduled receipts

80

50

Part D

Gross requirements

Scheduled receipts

160

190

200

Part E

Gross requirements

Scheduled receipts

90

44

4.16

Low-

level

code

Week 1 2 3 4 5

Part A

Gross

requirements

Scheduled receipts

100

0

Scheduled receipts

Part B

Gross

requirements

50

45

Part C

Gross

requirements

Scheduled receipts

100

100

0

200

0

50

0

Scheduled receipts

Part D

Gross

requirements

100

Scheduled receipts

Part E

Gross

requirements

400

40

50

50

Part F

Gross

requirements

Scheduled receipts

200

0

50

0