Vibration Analysis
Vibration analysis plays a vital role in understanding the dynamic behavior of systems and ensuring their safe and efficient operation. It involves various techniques and methods to analyze, interpret, and optimize the response of vibrating systems, enabling the detection of potential issues, fault diagnosis, and the improvement of performance and reliability.
General Procedures
Include setting up measurement points and the type of analysis or criterion for assessment
Set measurement points
Number and scope of measurement points
Assessment criterion
The standards or criterion required to analyse the collected vibration data
Root Cause Analysis
To find the source of high vibration
Case Study - Pedestal Substructure Top Plate, Surrounding Slab and Raised Floor
Step 1
Set Measurement Points
The number of measurement points should be sufficient to cover the test structure or area
For this case study, a total of 27 measurement points were collected, with 12 points at the pedestal top plate, 9 points at the slab floor, and 6 points at the raised floor.
Step 2
Assessment Criterion
The generic vibration criterion (VC) curves were used to assess the vibration measurements of the pedestal substructure and its surrounding.
It was concerned that the floor and pedestal vibration may affect the functionality of some vibration-sensitive equipment in the plant. Thus, the results of the vibration measurements were assessed against the ISO2631 / BS6472 vibration criterion (VC) curves as shown in the figure on the right.
Step 3
Analysis
The vibration analysis covered 3 principal directions of vibration in the one-third octave band center frequency range of 4-80Hz.
It is noted that the top plate of the pedestal fulfilled the VC-C criterion, its surrounding slab floor fulfilled the VC-E criterion, whereas no VC criterion was fulfilled by the raised floor. This indicates that the top plate is isolated from the raised floor vibrations. Sharp peak is observed at 50Hz for the top plate, slab, and the raised floor. It is also noted that the top plate marginally fulfilled the VC-C criterion at 50Hz.
Past Projects
- Vibration measurement on the substructure top plate, raised floor and slab, OSRAM Kulim, December 2022-April 2023 (on-going)
- Vibration analysis of P302-B Propylene Recycle Pump, Petronas Refinery and Petrochemical Corp (PRPC) / TecnimontHQC, 27 August 2020
- Vibration analysis of P613-B & C Jacket Water Pump, Petronas Refinery and Petrochemical Corp (PRPC) / TecnimontHQC, 26 August 2020
- Vibration analysis of P122-A & B 2nd Reactor Outer Cooler Pump, Petronas Refinery and Petrochemical Corp (PRPC) / TecnimontHQC, 26 August 2020
- Vibration Analysis on FIB-SEM NX2000 and the Surrounding Floors after Rectification Work, OSRAM Kulim, Kedah, 11 October 2019
- Vibration Analysis on FIB-SEM NX2000 and the Surrounding Floors, OSRAM Kulim, Kedah, 8 & 12 August 2019
- Vibration Analysis of Motor Driven Centrifugal Air Blower, KEMAC Sdn Bhd, Subang Jaya, 23 November 2018
