The offshore infrastructures are used by the oil and gas industry to meet over twenty percent of the world’s demand for the hydrocarbon productions. Offshore platforms are subjected to various environmental, operational and accidental loads. Environmental loads include wave, current, wind earthquake and ice loads. Considering the reuse of old platforms, design criteria for offshore structures have changed significantly over the post decades. Most of existing structures have been designed based on the previous codes. Many of these structures are now called upon for extended service beyond their original design life. This makes the need to assess the platforms under different environmental conditions such as wave, current and wind loading. Since the proposed amounts of Reserve Strength Ratio (RSR) in the guidelines are for the special geographical zones (i.e. Gulf of Mexico and other parts of US), and also since the methodologies used for estimation of RSR have not been determined explicitly, this study aims to explain more the effective parameters for the assessment of existing offshore platforms. Because the calculation of these parameters is based on statistical data for specific regions, to achieve the RSR ratio related to the Persian Gulf, we utilize the environmental statistical data for this region. And consequently a relevant RSR is proposed. Ultimately, the reserved strength of three sample platforms located in this zone will be assessed according to proposed criterion.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4819-7
PROCEEDINGS PAPER
Determination of Required Reserved Strength Ratio in Ultimate Strength Limit for Assessment of Existing Offshore Platforms in the Persian Gulf
M. M. Amiri,
M. M. Amiri
K. N. Toosi University of Technology, Tehran, Iran
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B. Asgarian
B. Asgarian
K. N. Toosi University of Technology, Tehran, Iran
Search for other works by this author on:
M. M. Amiri
K. N. Toosi University of Technology, Tehran, Iran
B. Asgarian
K. N. Toosi University of Technology, Tehran, Iran
Paper No:
OMAE2008-57193, pp. 227-232; 6 pages
Published Online:
July 27, 2009
Citation
Amiri, MM, & Asgarian, B. "Determination of Required Reserved Strength Ratio in Ultimate Strength Limit for Assessment of Existing Offshore Platforms in the Persian Gulf." Proceedings of the ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. Volume 2: Structures, Safety and Reliability. Estoril, Portugal. June 15–20, 2008. pp. 227-232. ASME. https://doi.org/10.1115/OMAE2008-57193
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