Production, Capacity And Material Planning Page 10

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Master Production Scheduling
Batch production: batch size = 2500
⌧I
= max{0, I
} – max{F
, O
}
t
t-1
t
t
>
0
if ,
I
0
=
Q
t
t
2500
,
otherwise
⌧I
= max{0, 1600} – max{1000, 1200} = 400 >0
1
⌧I
= max{0, 400} – max{1000, 800} = -600 <0 => Q2 = 2500
2
⌧I
= 2500 + 400 – max{1000, 800} = 1900, etc.
2
MPS
Jan
Feb
Current Inventory =
Week
Week
1600
1
2
3
4
5
6
7
8
1000
1000
1000
1000
2000
2000
2000
2000
forecast Ft
1200
800
300
200
100
orders Ot
1600
400
1900
900
2400
400
900
1400
1900
Inventory It
MPS Qt
2500
2500
2500
2500
2500
ATP
400
1400
2200
2500
2500
2500
Production Management
109

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