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Evaluation of Failure Capacity of Offshore Riser Protectors Under Vessel Impact

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Abstract

Conventional riser protectors, also known as riser-guards, are installed on fixed offshore platforms to protect risers from vessel impact. These space frame structures made of hollow mild steel tubular sections are mainly designed using the approach of boat fenders which may result in over- or under-protection provided to risers. Lack of in-depth study on the dynamic behavior and capacity of conventional riser-guards is considered to be the primary challenge for creative and efficient design of conventional riser protectors. This paper presents a detailed numerical investigation on the dynamic response, damage and failure mechanics of conventional steel riser-guards during accidental vessel collision using nonlinear finite element analysis. Collision forces equivalent to vessel collision with riser-guards for different spans were estimated to provide information for load-based design. Variation in damage patterns for broadside and bow impacts is presented for riser protectors with different spans. The actual capacity of a typical riser-guard in terms of maximum impact energy sustainable prior to failure was also determined from dynamic pushover analysis. The structural response and damage parameters presented in this study can be used for better understanding of damage mechanism and failure capacity of riser protectors which can act as a baseline for further design optimization, as well as the development of other alternative riser protection systems.

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References

  1. HSE, Ship/platform collision incident database, Prepared by Serco Assurance, research report 053, Health & Safety Executive United Kingdom (2003)

  2. American Petroleum Institute, Recommended Practice for Planning, Designing, and Constructing Fixed Offshore Platforms-Working Stress Design (American Petroleum Institute, Washington DC, 2007)

    Google Scholar 

  3. Det Norske Veritas, Design Against Accidental Loads, in Recommended Practice DNV-RP-C204 (2010)

  4. A. Stacey, J. Sharp, Safety factor requirements for the offshore industry. Eng. Fail. Anal. 14, 442–458 (2007)

    Article  Google Scholar 

  5. N.K. Mitra, C.E. Bravo, A. Kumar, Revival of Mumbai High North-A Case Study, in SPE Indian Oil and Gas Technical Conference and Exhibition (2008)

  6. J. Travanca, H. Hao, Numerical analysis of steel tubular member response to ship bow impacts. Int. J. Impact Eng. 64, 101–121 (2014)

    Article  Google Scholar 

  7. M. Storheim, J. Amdahl, I. Martens, On the accuracy of fracture estimation in collision analysis of ship and offshore structures. Mar. Struct. 44, 254–287 (2015)

    Article  Google Scholar 

  8. B. Sun, Z. Hu, G. Wang, An analytical method for predicting the ship side structure response in raked bow collisions. Mar. Struct. 41, 288–311 (2015)

    Article  Google Scholar 

  9. PETRONAS Carigalli Sdn Bhd, Design of Fixed Offshore Structures, in Petronas Technical Standards PTS 34.19.10.30 (2010)

  10. J. Wei-liang, J. Song, G. Shun-feng, Y. Lu, Evaluation of damage to offshore platform structure due to collision of large barge. J. Eng. Struct. 27, 1317–1326 (2005)

    Article  Google Scholar 

  11. C. Jebaraj, A.J. Swamidas M. Arockiasamy, Response of a boat landing system to the accidental collision by a supply boat, in Proceedings of OCEANS’87, IEEEXplore (1987)

  12. J.M. Gidwani, J.P. Renault, Boat impact ultimate capacity analysis of jacket structure, in Offshore Technology Conference, Texas (1990)

  13. C.P. Ellinas, Mechanics of ship/jack-up collision. J. Constr. Steel Res. 33, 283–305 (1995)

    Article  Google Scholar 

  14. M.J. Jhung, J.C. Jo, S.J. Jeong, Impact analysis of a water storage tank. J. Nucl. Eng. Technol. 38(7), 681–688 (2006)

    Google Scholar 

  15. A. Sayed, W.A. Attia, Finite elements analysis techniques of vessel collision with cable-stayed bridge. Life Sci. J. 9, 1179–1190 (2012)

    Google Scholar 

  16. Z.I. Syed, O.A. Mohamed, D.K. Palaniandy, M.S. Liew, Damage Assessment of Offshore Riser-guards under Accidental Vessel Impact, in 2nd International Conference on Civil, Materials, and Environmental Sciences, London (2015)

  17. D.K. Palaniandy, M.S. Liew, S. Karuppanan, Z.I. Syed, Estimation of Vessel Stopping Time During Collision with Offshore Riser Guard, in International Conference on Future Trends in Structural, Civil, Environmental and Mechanical Engineering, Bangkok, (2013)

  18. Anchor Handling Tug Supply Vessel, http://www.hartmann-offshore.com/?st=flotte. Accessed 12 May 2017

  19. American Society for Testing and Materials (ASTM), Standard Test Methods for Tension Testing of Metallic Materials (ASTM E8), in American Society for Testing and Materials (2009)

  20. G.R. Johnson, W.H. Cook, Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures. Eng. Fract. Mech. 21, 31–48 (1985)

    Article  Google Scholar 

  21. G.S. Langdon, G.K. Schleyer, Deformation and failure of profiled stainless steel blast wall panels. Part III: finite element simulations and overall summary. Int. J. Impact Eng. 32, 988–1012 (2006)

    Article  Google Scholar 

  22. K. Nahshon, M. Pontin, A. Evans, J. Hutchinson, F. Zok, Dynamic shear rupture of steel plates. J. Mech. Mater. Struct. 2, 2049–2066 (2006)

    Article  Google Scholar 

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Acknowledgments

The support of PETRONAS Carigali and Offshore Engineering Centre of Universiti Teknologi PETRONAS is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Civil Engineering, Abu Dhabi University, P.O. Box 59911, Abu Dhabi, UAE

    Zubair I. Syed

  2. Offshore Engineering Centre, Universiti Teknologi PETRONAS, 31750, Tronoh, Malaysia

    Mohd S. Liew, Shaikh A. Rahman & Dinesh K. Palaniandy

Authors
  1. Zubair I. Syed
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  2. Mohd S. Liew
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  3. Shaikh A. Rahman
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  4. Dinesh K. Palaniandy
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Correspondence to Zubair I. Syed.

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Syed, Z.I., Liew, M.S., Rahman, S.A. et al. Evaluation of Failure Capacity of Offshore Riser Protectors Under Vessel Impact. J Fail. Anal. and Preven. 18, 280–290 (2018). https://doi.org/10.1007/s11668-018-0407-7

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  • DOI: https://doi.org/10.1007/s11668-018-0407-7

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