Industrial Engineering and Production Management
The essential condition for the decompression of an activity is that

An activity could be decompressed to the maximum extent of its normal time
After decompression the time of an activity invariably exceeds its normal time
The project time should change due to decompression
An activity could be decompressed to the maximum extent of its normal time

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Industrial Engineering and Production Management
PERT

Provides an approach for keeping planning up-to-date
Permits management to foresee quickly the impact of variations from the plan
Provides a way for management to require that planning be done on a uniform and logical basis
All of the listed here

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Industrial Engineering and Production Management
Dispatching

Prescribes the sequence of operations to be followed
Determines the programme for the operations
Regulates the progress of job through various processes
Is concerned with the starting of processes

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