Page 124 - Intro Predictive Maintenance

Vibration Monitoring and Analysis 115

Table 7–1 Equipment and Processes Typically Monitored by Vibration Analysis

Centrifugal Reciprocating Continuous Process
Pumps Pumps Continuous Casters
Compressors Compressors Hot and Cold Strip Lines
Blowers Diesel Engines Annealing Lines
Fans Gasoline Engines Plating Lines
Motor/Generators Cylinders Paper Machines
Ball Mills Other Machines Can Manufacturing Lines
Chillers Pickle Lines
Product Rolls Machine-Trains Printing
Mixers Boring Machines Dyeing and Finishing
Gearboxes Hobbing Machines Roofing Manufacturing Lines
Centrifuges Machining Centers Chemical Production Lines
Transmissions Temper Mills Petroleum Production Lines
Turbines Metal Working Machines Neoprene Production Lines
Generators Rolling Mills, and Most Polyester Production Lines
Rotary Dryers Machining Equipment Nylon Production Lines
Electric Motors Flooring Production Lines
All Rotating Machinery Continuous Process Lines
Source: Integrated Systems, Inc.

Some of the applications that are discussed briefly in this section are predictive main-
tenance, acceptance testing, quality control, loose part detection, noise control, leak
detection, aircraft engine analyzers, and machine design and engineering. Table 7–1
lists rotating, or centrifugal, and nonrotating equipment, machine-trains, and contin-
uous processes typically monitored by vibration analysis.

7.1.1 Predictive Maintenance
The fact that vibration profiles can be obtained for all machinery having rotating or
moving elements allows vibration-based analysis techniques to be used for predictive
maintenance. Vibration analysis is one of several predictive maintenance techniques
used to monitor and analyze critical machines, equipment, and systems in a typical
plant. As indicated before, however, the use of vibration analysis to monitor rotating
machinery to detect budding problems and to head off catastrophic failure is the domi-
nant technique used with maintenance management programs.

7.1.2 Acceptance Testing
Vibration analysis is a proven means of verifying the actual performance versus design
parameters of new mechanical, process, and manufacturing equipment. Preacceptance
tests performed at the factory and immediately after installation can be used to ensure
that new equipment performs at optimum efficiency and expected life-cycle cost.
Design problems as well as possible damage during shipment or installation can be
corrected before long-term damage and/or unexpected costs occur.