This paper presents a methodology for reliability analysis of Tension Leg Platform (TLP) tendons subjected to extraordinary sea state conditions like hurricanes or winter storms. A coupled approach in time domain is used to carry out TLP random nonlinear dynamic analysis including wind, current and first and second order wave forces. The tendons Ultimate Limit State (ULS) condition is evaluated by an Interaction Ratio (IR) taking into account dynamic combination among tension, bending and hydrostatic pressure. Expected long-term extreme IR is obtained through the integration of cumulative probability functions (CPFs) fitted to response maxima associated to individual short term sea states. The reliability analysis is performed using a time-integrated scheme including uncertainties in loads, tendon strength, and analytical models. Failure probabilities for the most loaded tendon of a TLP in Campeche Bay, Mexico, considering a 100-yr design sea state and the 100-yr extreme response generated by long-term observed storms are compared.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4196-0
PROCEEDINGS PAPER
Reliability of TLP Tendons Under Storm Sea States
Federico Barranco Cicilia,
Federico Barranco Cicilia
Instituto Mexicano del Petro´leo, Me´xico D.F., Me´xico
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Edison Castro Prates de Lima,
Edison Castro Prates de Lima
COPPE/UFRJ, Rio de Janeiro, RJ, Brazil
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Lui´s Volnei Sudati Sagrilo
Lui´s Volnei Sudati Sagrilo
COPPE/UFRJ, Rio de Janeiro, RJ, Brazil
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Federico Barranco Cicilia
Instituto Mexicano del Petro´leo, Me´xico D.F., Me´xico
Edison Castro Prates de Lima
COPPE/UFRJ, Rio de Janeiro, RJ, Brazil
Lui´s Volnei Sudati Sagrilo
COPPE/UFRJ, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2005-67170, pp. 79-86; 8 pages
Published Online:
November 11, 2008
Citation
Cicilia, FB, Prates de Lima, EC, & Sudati Sagrilo, LV. "Reliability of TLP Tendons Under Storm Sea States." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 2. Halkidiki, Greece. June 12–17, 2005. pp. 79-86. ASME. https://doi.org/10.1115/OMAE2005-67170
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