Vibrations issues
Vibrations issues
What are the most underrated causes of vibration issues in rotating equipment from an operations perspective?
Re: Vibrations issues
From an operations perspective, some of the worst vibration problems are not caused by bad machinery — they are caused by process conditions quietly pushing the machine outside its stable operating envelope. A lot of vibration investigations stay too mechanical-focused (alignment, balancing, bearings), while the actual trigger is process or operational behavior.
Some of the those causes include the following:
1. Operating Too Far From BEP
2. Two-Phase Flow
3. Poor Warm-Up / Thermal Stabilization
4. Minimum Flow Recycle Systems Creating Instability
5. Pipe Strain Introduced During Operation
6. Control Valve Hunting
There are other many but when vibrations appear, it is best to ask;
When vibration appears, ask:
a. Did process conditions change?
b. Did throughput change?
c. Did tank/source change?
d. Any valve hunting?
e. Any recent maintenance?
f. Any control loop tuning changes?
g. Is recycle active?
h. Is machine near minimum flow?
i. Any temperature transient?
j. Any intermittent cavitation sounds?
k. Any startup procedure deviation?
Some of the those causes include the following:
1. Operating Too Far From BEP
2. Two-Phase Flow
3. Poor Warm-Up / Thermal Stabilization
4. Minimum Flow Recycle Systems Creating Instability
5. Pipe Strain Introduced During Operation
6. Control Valve Hunting
There are other many but when vibrations appear, it is best to ask;
When vibration appears, ask:
a. Did process conditions change?
b. Did throughput change?
c. Did tank/source change?
d. Any valve hunting?
e. Any recent maintenance?
f. Any control loop tuning changes?
g. Is recycle active?
h. Is machine near minimum flow?
i. Any temperature transient?
j. Any intermittent cavitation sounds?
k. Any startup procedure deviation?