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To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
D D
D D
G G
G G
G G
M M
M M
M M
A A
A A
L
L L
L L
L L
L
Process LayoutProcess Layout
Chapter 7Chapter 7
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Implementchanges
6
Redesign Process (Revise layout)
5
Redesigning a Process Redesigning a Process Through Layout RevisionThrough Layout Revision
Documentprocess
3
Definescope
2
Evaluateperformance
4
Figure 7.1Figure 7.1
Identify opportunity
1
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Absolute LocationsAbsolute Locations
(a) Original layout(a) Original layout
Frozen foods
Dry groceries
Bread Vegetables
Meats
Figure 7.2Figure 7.2
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Absolute LocationsAbsolute Locations
(b) Revised layout(b) Revised layout
Frozen foods
Dry groceries
BreadVegetables
Meats
Figure 7.2Figure 7.2
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Layout TypesLayout Types
FoundryMilling
machines
LathesGrinding
Painting Drills
Office
Welding
Forging
(a) Layout of a job shop(a) Layout of a job shopFigure 7.3Figure 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Layout TypesLayout Types
(b) Layout of a production line(b) Layout of a production line
Figure 7.3Figure 7.3
Station 1 Station 2 Station 3 Station 4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Group TechnologyGroup Technology
Machine 1
Machine 2
Machine 3
Machine 4Machine
5
Materials in
Finished goods out
Figure 7.4Figure 7.4
One Worker, Multiple MachinesOne Worker, Multiple Machines
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Group TechnologyGroup Technology
Figure 7.5Figure 7.5
Drilling
D D
D D
Grinding
G G
G G
G G
Milling
M M
M M
M M
Assembly
A A
A A
Lathing
Receiving and shipping
L
L L
L L
L L
L
(a) Jumbled flows in a job shop without GT cells(a) Jumbled flows in a job shop without GT cells
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Group TechnologyGroup Technology
(b) Line flows in a job shop with three GT cells (b) Line flows in a job shop with three GT cells
Cell 3
L M G G
Cell 1 Cell 2
Assembly area
A A
L M DL
L MShipping
D
Receiving
G
Figure 7.5Figure 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Department Area Needed (ft2)
1. Administration 3,5002. Social services 2,6003. Institutions 2,4004. Accounting 1,6005. Education 1,5006. Internal audit 3,400
Total 15,000
100'
150'
Office of Budget Office of Budget ManagementManagement
3 6 4
1 2 5
Figure 7.6Figure 7.6
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement
Trips between Departments
Department 1 2 3 4 5 6
1. Administration —
2. Social services —
3. Institutions —
4. Accounting —
5. Education —
6. Internal audit —
3 6 5 6 10
8 1 1
3 9
2
1
100'
150'
3 6 4
1 2 5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement Departments 1 and 6 close together Departments 3 and 5 close together Departments 2 and 3 close together
Figure 7.7Figure 7.7
100'
150'
1 5
6
100'
150'
3 6 4
1 2 5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement Departments 1 and 6 close together Departments 3 and 5 close together Departments 2 and 3 close together
Figure 7.7Figure 7.7
100'
150'
1 5
6 3
100'
150'
3 6 4
1 2 5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement Departments 1 and 6 close together Departments 3 and 5 close together Departments 2 and 3 close together
Figure 7.7Figure 7.7
100'
150'
1 5
6 32
4
100'
150'
3 6 4
1 2 5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement
100'
150'
3 6 4
1 2 5
Departments 1 and 6 close together Departments 3 and 5 close together Departments 2 and 3 close together
Figure 7.7Figure 7.7
100'
150'
1 5
6 32
4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Distance MeasuresDistance Measures
Euclidian DistanceEuclidian Distance
Rectilinear DistanceRectilinear Distance
ddABAB = (= (xxAA –– x xBB))22 + ( + (yyAA – – yyBB))22
ddABAB = |= |xxAA –– x xBB| + || + |yyAA – – yyBB||
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement
100'
150'
3 6 4
1 2 5
Load Distance Analysis
Current Plan Proposed Plan
Dept Closeness Distance DistancePair Factor, w d wd Score d wd Score
1,2 3 1 3 2 61,3 6 1 6 3 181,4 5 3 15 1 51,5 6 2 12 2 121,6 10 2 20 1 102,3 8 2 16 1 82,4 1 2 2 1 12,5 1 1 1 2 23,4 3 2 6 2 63,5 9 3 27 1 94,5 2 1 2 1 25,6 1 2 2 3 3
ld =112 ld = 82Example 7.2
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement
100'
150'
3 6 4
1 2 5
Figure 7.8Figure 7.8
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Office of Budget Office of Budget ManagementManagement
100'
150'
3 6 4
1 2 5
Figure 7.9Figure 7.9
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Out-and-Back WarehouseOut-and-Back Warehouse
Figure 7.10Figure 7.10
Dock Aisle
Storage area
Storage area
3 5 5 6 4 2 7
1 5 5 4 4 2 7
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Zone SystemsZone Systems
Figure 7.11Figure 7.11
Click to add titleZones Zones Control
station Shipping doors
Tractor trailer
Tractor trailer
Overflow
Feeder lines
Feeder lines
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing
Green Grass, Inc.Green Grass, Inc.Big BroadcasterBig Broadcaster
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
A
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
3030
B
A
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
5050
B
C
A
3030
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
5050
3030
4040
D
B
C
A
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
66
5050
E3030
4040
D
B
C
A
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
66
5050
E3030
2525
4040
D
B
FC
A
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
66
5050
1515
E3030
2525
4040
D
B
FC
A
G
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
66
2020
5050
1515
E3030
2525
4040H
D
B
FC
A
G
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
AA Bolt leg frame to hopperBolt leg frame to hopper 4040 NoneNoneBB Insert impeller shaftInsert impeller shaft 3030 AACC Attach axleAttach axle 5050 AADD Attach agitatorAttach agitator 4040 BBEE Attach drive wheelAttach drive wheel 66 BBFF Attach free wheelAttach free wheel 2525 CCGG Mount lower postMount lower post 1515 CCHH Attach controlsAttach controls 2020 D, ED, EII Mount nameplateMount nameplate 1818 F, GF, G
TotalTotal 244244
WorkWork TimeTime ImmediateImmediateElementElement DescriptionDescription (sec)(sec) Predecessor(s)Predecessor(s)
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Example 7.3Example 7.3
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
Figure 7.12Figure 7.12
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
Example 7.4Example 7.4
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
r = 2400/40 = 60 units/hour
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
r = 2400/40 = 60 units/hour
c = 1/60 = 1 minute/unit= 60 seconds/unit
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unit
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unit
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
TM = 244 seconds/60 seconds= 4.067 or 5 stations
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unit
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
TM = 244 seconds/60 seconds= 4.067 or 5 stations
Efficiency = [244\5(60)]100 = 81.3%
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Desired output rate = 2400/weekPlant operates 40 hours/week
TM = 244 seconds/60 seconds= 4.067 or 5 stations
Efficiency = [244\5(60)]100 = 81.3%
Example 7.4Example 7.4
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
4040
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
40
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
40
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
40
66
2020
5050
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
40
66
2020
50
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S240
66
2020
50
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S240
66
2020
50
1515
1818
E3030
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S240
66
2020
50
1515
1818
E30
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S240
66
2020
50
1515
1818
E30
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S240
66
2020
50
1515
1818
E30
2525
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30E,F,G F 55 5
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
S1
S2
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
40
66
2020
50
1515
1818
E30
25
4040H
I
D
B
FC
A
G
Cumm IdleStation Candidate Choice Time Time
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30E,F,G F 55 5
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S2S3
40
66
2020
50
1515
1818
E30
25
4040H
I
D
B
FC
A
G
S1 A A 40 20
S2 B,C C 50 10
S3 B,F,G B 30 30E,F,G F 55 5
Cumm IdleStation Candidate Choice Time Time
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1S3
S240
66
2020
50
1515
1818
E30
25
4040H
I
D
B
FC
A
G
Example 7.5Example 7.5
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Line BalancingLine Balancing Big BroadcasterBig Broadcaster
cc = 60 seconds/unit = 60 seconds/unitTM = 5 stationsTM = 5 stationsEfficiency = 81.3%Efficiency = 81.3%
S1
S2S3
S5S4
Figure 7.13Figure 7.13
40
6
20
50
15
18
E30
25
40H
I
D
B
FC
A
G
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Solved Problem 1Solved Problem 1
B FE
A C D B
FE
A
C
D
Figure 7.14Figure 7.14 Figure 7.15Figure 7.15
TRIPS BETWEEN DEPARTMENTSDEPT A B C D E F
A — 8 3 9 5B — 3C — 8 9D — 3E — 3F —
To Accompany Krajewski & Ritzman Operations Management: Strategy and Analysis, Seventh Edition © 2004 Prentice Hall, Inc. All rights reserved.
Solved Problem 2Solved Problem 2
2020
E
145145
H
130130
I
2525
D
8080
B
1515
F
5050
C
4040
A
120120
G115115
J
Figure 7.16Figure 7.16
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