Ideally, the
ocurrence of such problems can be avoided by means of a mechanical
audit for the key mechanical components as bearings, couplings,
seals and impellers during the design stage.
On the other hand, some remanufactured or revamped units, or
units with new gas conditions, might need a sequenced and organized
follow up and data acquisition in order to perform a full
rotordynamic audit. Dynamic signals as noise, pulsation and
vibration are of special interest.
Solving of dynamic problems is a challenging task that may
require the concurrence of the operator, the OEM, and the
consultant. Within this scenario, the operator takes critical
decisions without coverage for profit loss.
This is the reason because at least two opinions should coincide.
And it is not easy OEM and operator to coincide. Here is where the
consultant becomes a key factor. In the event the operator
demonstrates the OEM, design is the root cause of the problem, then
the OEM will fix his machine, but will not deal with plant shutdown.
