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Elsevier US
Job
code KIBChapter: Ch11-H7983 6-12-2006 9:22 p.m.
Page:376
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Fonts used Sabon & Frutiger
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376
International Business time necessary to compare
various project activities, while CPM assumed that both time and costs were known with certainty. Operations managers today tend to use a combination of the best features of PERT and CPM and this has resulted in anew PERT/CPM technique. The PERT/CPM technique is a descriptive tool, which determines the completion time of a project and identifies those activities that are critical for its on-time completion. With this information, operations managers can work toward completing the project on time and within the budget.
22
The PERT/CPM technique uses simple networks in order to represent the activities
that take place in a project, as well as how these activities interrelate. A PERT/CPM network is made up of activities and events. An activity is a task or job that consumes time and resources and is shown as a line on the network. An event is a project milestone, which occurs atone point in time and does not consume time or resources. Events are shown as nodes on the network.
Consider the following example involving the opening of anew restaurant in France.
Example 2An Italian fast-food chain wants to open anew restaurant in Cannes in the
South of France. The operations manager has compiled a list of activities
that need to take place, together with an estimate of the expected time that each activity would take. All the activities, their preceding activities, and their expected durations (in weeks) are shown in the table below:
Activity
Description
Preceding
Activity
Duration
A
Find
location–
12
B
Recruit staff
–
6
C
Make alterations
A
6
D
Order new
equipmentA
2
E
Install equipment
D
5
F
Train staff
B
3
G
Open restaurant
C, E, F
1
The operations manager wants to produce a network in order to represent the activities of this project and then estimate the project’s expected completion time.
The resulting network is shown in Exhibit 11.6.
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.............................................................................
Elsevier US
Job code KIB
Chapter: Ch11-H7983 6-12-2006 9:22 p.m.
Page:377
Trimsize:7.25 in in
Fonts used Sabon & Frutiger
Margins:Top:36 pt
Gutter:66 pt
Font Size pt
Text Width PC
Depth:43 Lines
International Operations Management
377
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