The Panipat Refinery of Indian Oil Corporation Limited (IOCL) is the 7th largest & technologically sophisticated public sector refinery complex in India spread across a land of 4222 acres. iFluids Engineering was assigned to conduct pulsation study & Mechanical Vibration Analysis of Suction & Discharge Piping of Wash Water Pumps of OHCU & HCU units in Panipat Refinery.
The Purpose of carrying out Pulsation study of the wash water circuit piping was to ensure:
- Safety of piping and piping components
- Safety of connected equipment and supporting structures
- Piping deflections and vibrations within the allowable limits
- Design and provision of supports at the most suitable & feasible location.
Methodology
- Pulsation Study and Mechanical Vibration Analysis for both the suction and discharge pipeline of Wash Water Pumps of OHCU & HCU Units of Panipat Refinery .
- Wash Water Pump Tag numbers for which Pulsation Study and Mechanical Vibration Analysis was carried out are as follows:
| Sl no | Unit | Drawaing Details |
| 1 | OHCU Wash Water Pumps (Tag No.:05-PA-RC-007 A / B / C / D) | Total 19 nos. Of drawings. |
| 2 | HGU Wash Water Pumps (Tag No.: 75-RP-113 A / B) | Total 25 nos. Of drawings. |
- Peak to peak pressure variation in predicting liquid hammer conditions inside the pipeline. The peak pressure was compared against the guidelines provided in API-674.
- With appropriate Software the pressure variation in the vibration/harmonic loads on the pipeline, throughout its length was evaluated.
- Mechanical Vibration Analysis carried out using appropriate Software to ensure that natural frequency of pipelines aren’t coinciding with the natural frequency of pumps.
- Regions of high stress, deflection evaluated with the harmonic load result obtained using appropriate software.
- Based on conducted analysis, design changes were suggested in the piping like: additional pulsation dampers, orifice plate, pipe supports and pipe hangers etc.
Completion Period
The time of completion of the project was 45 days.
Deliverables
- Detailed report on Pulsation/Vibration simulation procedure
- Examination of the pipe supports and provided suggestions to include extra supports, hangers and anchors to reduce resonance and displacement in pipes.
- Final Modified Isometric drawings, including support drawings incorporating the output of the Pulsation study and Mechanical vibration analysis.