Piping failures due to vibration have been a major cause of downtime and fires in industrial plants across the world. As a result, it is important to evaluate the vibration levels of piping systems to ensure the levels are acceptable. If vibration levels are considered excessive, modifications to the piping and/or its support structure may be required. Alternately, the excitation mechanisms contributing to the vibration must be altered or eliminated. For modifications to be effective, it is necessary to understand the principles involved.
Common Piping Vibration Areas
- Long Pipe Spans
- Piping Appurtenances (vents, drains, gages, etc.)
- Large Masses (e.g., Valves and Components)
- Reciprocating Compressor Cylinders and Manifold Bottles
Common Causes of Vibration
- Excessive Pulsation
- Mechanical Natural Frequencies
- Inadequate Supports and/or Support Structure
