English abstract
The repeated motion of a particle about its mean position is termed as vibration.
Vibration is present in all rotating, and reciprocating machinery. Vibrations cannot be
eradicated but can be minimized and kept within reasonable limits. Vibration Analysis of
piping elements in Oil &Gas process industries like Mina' Al Fahal is very significant.
Vibration can be a significant threat to plants and might cause a shutdown, besides
threatening the safety of the employees as well as the surrounding environment. The
vibration can be directly related to the flow of the main process fluid through the piping
system. This study aims to investigate and analyze the flow induced vibration in the piping
system within Mina' Al Fahal. Direct measurements of vibration (both magnitude, and
frequency) were conducted for this purpose, and at different locations within the Mina' Al
Fahal. The effect of different operating conditions for fully opened and partially opened
flow has been examined. Twelve pipelines of different sizes varying from 2-inch diameter
to 40-inch diameter and Carbon Steel &Stainless-Steel materials have been monitored and
recorded for vibrations. It is proposed that pipes of larger diameter (40-inch) showed a peak
amplitude value of 9.4m/s2
and lower diameter pipe (6-inch) showed a peak amplitude
value of 9.73m/s2
, the results can be utilized for forecasting the failure of the piping system
as a result of induced vibration. Various countermeasures are suggested to reduce the
vibrations. Moreover, measured vibration data were compared with theoretical relations
and very minimum error is observed between experimental and theoretical results with
error less than 4%.
