Major oil and gas operator
To assure the integrity of the vessel for current and future operations.
Frazer-Nash has extensive experience in complex structural/hydrodynamic assessments.
Floating Production, Storage and Offloading (FPSO) systems are valuable and complex assets. To assure our client of the integrity of one such vessel and its ability to withstand its operating conditions, we were asked to perform strength and fatigue assessments.
We built a global model of the ship structure, turret and the module frame structure using SESAM (DNV software). Using over 600 different combinations of wave height, frequency and direction to give a complete picture of the vessel’s response, we performed three assessments:
- Strength assessment of the ship structure under the impact of extreme waves
- Spectral fatigue assessment to account for cumulative damage of through life offshore operation, including seasonal changes in wave loading
- Strength assessment of the mooring system for an extreme 10,000 year wave.