The Eemshaven Energy LNG Terminal commenced gas production on September 2022. Upon start-up small bore vent piping was found to be vibrating due to flow induced vibration of the system. 6 vent lines with 50mm NB had to be analysed for failure, based on monitored vibrations, in a fatigue life assessment.
OI’s scope of work:
The scope of work envisaged for OI was as follows:
- Gathering vibration data: frequency and velocity at different flow rates
- Calculating stress levels in areas most susceptible to fatigue damage
- Determining the fatigue life based on DNV S/N curve
- Recommend mitigation measures