Operational risks of non-ice-resistant platforms in waters with unstable ice environment

Author: O.Ye. Litonov

Abstract

The problem discussed is production period extension for non-ice-resistant platforms, self-elevating MODU, for instance, in areas with transitive ice situation. It is demonstrated that a critical case for such platforms is a piece of ice stopping nearby. The statistical aspect of the problem is considered. It is emphasized that due to the numerosity of original dependences for ice load determination the main task when the risks are determined is not to create actual statistic models, but to have a reliable initial base. 
Key words: ice loads, non-ice-resistant platforms, optimization of operation period.


References

1. O.E. Litonov. Optimizacija perioda jekspluatacii SPBU v akvatorii s nepostojannoj ledovoj obstanovkoj. Konferencija po stroitel'noj mehanike korablja, posvjashhjonnaja pamjati professora P.F. Papkovicha. Krylovskij gosudarstvennyj nauchnyj centr, S-Peterburg, 2012 g. – S.134 - 135.
2. SP 38.1330.2012. Nagruzki i vozdejstvija na gidrotehnicheskie sooruzhenija (volnovye, ledovye i ot sudov). SNiP 2.06.04-82. M. 2014 g.
3. Pravila klassifikacii, postrojki i oborudovanija plavuchih burovyh ustanovok i morskih stacionarnyh platform. Rossijskij morskoj registr sudohodstva, 2014 g.
4. Mezhdunarodnyj standart ISO/FDIS 19906 Neftjanaja i gazovaja promyshlennost'. – Konstrukcii sooruzhenij arkticheskogo shel'fa, 2010 g.
5. Nacional'nyj standart Rossijskoj Federacii. GOST R ISO 19906 ²Neftjanaja i gazovaja promyshlennost'. – Sooruzhenija arkticheskogo shel'fa², Moskva, Standartinform, 2011 g.



About author

Litonov Oleg - DSc, professor, Krylov State Research Centre, St. Petersburg 

Issue: 40/41 (2015)




For citation: O.Ye. Litonov. Operational risks of non-ice-resistant platforms in waters with unstable ice environment. Research Bulletin by Russian Maritime Register of Shipping. 2015, No. 40/41, pp. 38-40.

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UDC:  629.124: 622
Pages:  38 - 40