Risk Assessment of Fixed Offshore Jacket Platforms: A Persian Gulf Case Study

Document Type : Original Research Article

Authors

1 Assistant Professor, Abadan Faculty of Petroleum, Petroleum University of Technology, Abadan, Iran

2 M.Sc Graduate, Civil Engineering Department, Faculty of Engineering, University of Hormozgan, Hormozgan, Iran

3 Assistant Professor, Civil Engineering Department, Faculty of Engineering, University of Hormozgan, Hormozgan, Iran

Abstract

Offshore platforms are among important structures whose performance during their life-time and beyond is of significant importance. One of the approaches for ensuring a platform’s fitness-for-purpose condition is the structural integrity management system. In this process, a wide range of risk assessment approaches can be carried out to investigate the platforms’ performance. These assessments are divided into qualitative, semi-quantitative and quantitative methods, whose outcome is the risk level of the structure under investigation. By obtaining the risk level, the condition of the platform can be surveyed and certain actions can be defined to ensure that the platform remains fit-forpurpose. In this study, a fixed offshore jacket platform located in the phase 19 of the South Pars gas field in the Persian Gulf is investigated using a semiquantitative risk assessment method. Based on certain assumptions, the risk level obtained for this platform can be categorized as intermediate. By knowing the risk level, risk mitigation actions can be carried out and inspection intervals can beefined. 

Keywords

References

  1. Wilson, J.F., (2003), Dynamics of offshore structures. John Wiley & Sons.
  2. Sadian, R. and A. Taheri, (2016), In-Place Strength Evaluation of Existing Fixed Offshore Platform Located in Persian Gulf with Consideration of Soil-Pile Interactions, International Journal of Coastal and Offshore Engineering, Vol. 2(0), p. 35-42.
  3. Erfani, M.H., M.R. Tabeshpour, and H. Sayyaadi, (2019), Capacity Evaluation of Ressalat Jacket of Persian Gulf Considering Proper Finite Element Modeling of Tubular Members, International Journal of Coastal and Offshore Engineering, Vol. 3(2), p. 55-63.
  4. Ghasemi, M.R., N. Shabakhty, and M.H. Enferadi, (2019), Optimized SMA Dampers in Vibration Control of Jacket-type Offshore Structures (Regular Waves), International Journal of Coastal and Offshore Engineering, Vol. 2(4), p. 25-35.
  5. Zeinoddini, M., H. Golpour, H. Khalili, H. Matin Nikoo, and I. Ahmadi, (2017), Sensitivity Analysis of Selected Random Variables of Existing Offshore Jacket Structures in Persian Gulf, International Journal of Coastal and Offshore Engineering, Vol. 5(0), p. 7-16.
  6. Taheri, A. and Jahangir. M, (2017), Reliability Assessment of a Fixed Jacket Platform by Monte Carlo Simulation Using Neural Network, International Journal of Coastal and Offshore Engineering, Vol. 1(3), p. 57-64.
  7. Westlake, H., F. Puskar, P. O'Connor, and J. Bucknell, (2006), The role of ultimate strength assessments in the Structural Integrity Management (SIM) of Offshore Structures, Offshore Technology Conference, Offshore Technology Conference.
  8. Stacey, A., M. Birkinshaw, and J. Sharp, (2002), Reassessment issues in life cycle structural integrity management of fixed steel installations, International Conference on Offshore Mechanics and Arctic Engineering.
  9. O'Connor, P., J. Bucknell, S. DeFrance, H. Westlake, and F. Westlake, (2005), Structural integrity management (SIM) of offshore facilities, Offshore Technology Conference, Offshore Technology Conference.
  10. Westlake, H., F. Puskar, P. O'Connor, and J. Bucknell, (2006), The development of a recommended practice for structural integrity management (SIM) of fixed offshore platforms, Offshore Technology Conference, Offshore Technology Conference.
  11. API, R.S., (2014), Structural integrity management of fixed offshore structures.
  12. Aeran, A., S.C. Siriwardane, O. Mikkelsen, and I. Langen, (2017), A framework to assess structural integrity of ageing offshore jacket structures for life extension, Marine Structures, Vol. 56, p. 237-259.
  13. Guédé, F., (2019), Risk-based structural integrity management for offshore jacket platforms, Marine Structures, Vol. 63, p. 444-461.
  14. Petropars at a glance. Available from: http://www.petropars.com/petropars-at-a-glance.
  15. Nelson, A., (2003), Technical performance measures for North Sea jacket structures. 2003: HSE Research report.
  16. Potty, N.S. and M. Akram, (2009), Structural integrity management for fixed offshore platforms in Malaysia, 7(2), JULY-DECEMBER 2009, ISSN 1511-6794, p. 8.
  17. ISO, E., (2007), Petroleum and natural gas industries—Fixed steel offshore structures. 2007, ISO Geneva.
  18. Norsok, N., (2009), 006, Assessment of Structural Integrity for Existing Offshore Load-Bearing Structures. 2009, Draft.

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