Risk in stability evaluation for floating offshore units
During the useful life of a vessel it undergoes various changes that lead to uncertainties in determining the displacement and center of gravity. Besides upgrading work, the very operation of the platform itself involving constant ballast and oil loading and unloading or the use of maintenance equip...
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| Veröffentlicht in: | Ocean engineering 2011-06, Vol.38 (8), p.967-975 |
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| container_title | Ocean engineering |
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| creator | Vasconcellos, J.M. Oliveira, N.G. |
| description | During the useful life of a vessel it undergoes various changes that lead to uncertainties in determining the displacement and center of gravity. Besides upgrading work, the very operation of the platform itself involving constant ballast and oil loading and unloading or the use of maintenance equipment can generates uncertainties concerning the displacement and center of gravity. These, therefore, are the parameters that present uncertainties inherent to the vessel's operations. Taking this into account, one example of the application of uncertainties on the displacement and transversal and vertical center of gravity positions will be presented in the analysis of the static stability of a converted FPSO tanker. Another question raised in this work is the deterministic treatment of certain criteria for the parameters that depend on random factors, such as wind, currents and waves. This paper will present a probabilistic approach for the calculation of the roll angle according to resolution IMO A.562 (environment criteria). The two chosen criteria for this analysis were resolutions IMO A.167 (general criteria) and A.562 (weather criterion). |
| doi_str_mv | 10.1016/j.oceaneng.2010.12.009 |
| format | Article |
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Besides upgrading work, the very operation of the platform itself involving constant ballast and oil loading and unloading or the use of maintenance equipment can generates uncertainties concerning the displacement and center of gravity. These, therefore, are the parameters that present uncertainties inherent to the vessel's operations. Taking this into account, one example of the application of uncertainties on the displacement and transversal and vertical center of gravity positions will be presented in the analysis of the static stability of a converted FPSO tanker. Another question raised in this work is the deterministic treatment of certain criteria for the parameters that depend on random factors, such as wind, currents and waves. This paper will present a probabilistic approach for the calculation of the roll angle according to resolution IMO A.562 (environment criteria). 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Stresses</topic><topic>Uncertainty</topic><topic>Vessels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vasconcellos, J.M.</creatorcontrib><creatorcontrib>Oliveira, N.G.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Ocean engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vasconcellos, J.M.</au><au>Oliveira, N.G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Risk in stability evaluation for floating offshore units</atitle><jtitle>Ocean engineering</jtitle><date>2011-06-01</date><risdate>2011</risdate><volume>38</volume><issue>8</issue><spage>967</spage><epage>975</epage><pages>967-975</pages><issn>0029-8018</issn><eissn>1873-5258</eissn><coden>OCENBQ</coden><abstract>During the useful life of a vessel it undergoes various changes that lead to uncertainties in determining the displacement and center of gravity. 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| ispartof | Ocean engineering, 2011-06, Vol.38 (8), p.967-975 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Collection |
| subjects | Applied sciences Ballast Buildings. Public works Center of gravity Criteria Displacement Exact sciences and technology FPSO safety FPSO stability Hydraulic constructions Marine Offshore engineering Offshore structure (platforms, tanks, etc.) Probabilistic stability Risk Stresses. Safety Structural analysis. Stresses Uncertainty Vessels |
| title | Risk in stability evaluation for floating offshore units |
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