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Keywords: calculation
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Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29163-MS
... Abstract The paper describes a simulation tool for simulating the transit of ships through brash ice channels, based on the Discrete Element Method (DEM). Fundamentals of the method are given, including contact detection and forces calculation. Artificial brash ice channels are created...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29164-MS
... Abstract The thickened width of floating ice roads has tended to be a practical consideration rather than a design aspect. Standard methods of calculating the required thickness of ice roads consider the road to be of infinite length and width. In this paper we outline calculations...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29107-MS
... by existing methods. downward breaking iso 19906 croasdale ice load upward calculation pressure ridge wind energy rubble keel friction equation consolidated layer cone cohesion thickness level ice conical collar keel load ridge load renewable energy Allyn N...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27384-MS
... Bergan , P. G. et al . 2004 . Advances in Fatigue Assessment of FPSOs . OMAE-FPSO’04-0012, Int. Conf . Houston 2004 . Croasdale , K. , Cammaert , A . 1994 . An improved method for the calculation of ice loads on sloping structures in first-year ice. Power Technol. Eng...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27385-MS
... are provided. A more comprehensive description of the complete study is given in KRCA (2014) and Croasdale et al. (2016a) . iso 19906 new model calibration artificial intelligence sensitivity flexural strength ride-up height ice load thickness calculation croasdale ice thickness equation...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27426-MS
... Abstract In ISO 19906 (2010), there are no algorithms provided for calculating loads on sloping structures due to interaction with multi-year (MY) ridges; only references are provided for a range of methods; to quote from Clause A.8.2.4.5.2:"Multi-year ridge actions against conical structures...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27428-MS
... to ice ridges. The present work examines available approaches for evaluating ridge keel forces, including passive pressure calculations. The processes of ice rubble failure and the corresponding stress distributions are considered in the context of classical soil mechanics applied in geotechnical...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25566-MS
... of management vessel is calculated in order to protect a structure against drifting ice according to linear, sector and circular management techniques. The tool produces visualization of the operations, with indication of the requested power level and distributions of the resulting floe size. floe size...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25514-MS
... assessment calculation operation contingency planning frequency chemical spill technology conference arctic region emergency response oil spill risk assessment rainbow methodology upstream oil & gas evaluation pipeline rupture consequence module sensitivity Etkin , D.S...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25517-MS
... of the managed-ice conditions. Design codes and available models in the literature may provide good bases to calculate level-ice actions on floating structures where the interaction process is typically divided into several phases: breaking, rotating, sliding and clearing of ice. However, the situation...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24627-MS
... Abstract Guidelines to predict ice loads on arctic structures have been covered in ISO 19906 [1] based on some empirical equations. This study aims to calculate ice loads for various types of structures using an analytical approach and comparing results with those calculated according to ISO...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23719-MS
... Abstract In work principles of modeling of interaction of sea gravitational oil andgas extraction platforms with the soil basis are presented. The seabed level ispresented by the non-uniform model consisting of seven layers of soils, satedwith a liquid. Approximate calculation of interaction...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23720-MS
... design stage. The paper reviews one of the main conditions that influences reliable operationof underwater pipeline systems, namely, stable position of the underwaterpipeline at design reference marks. Calculations of offshore pipeline stability on the seabed use the followingmain conditions...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23778-MS
... PC rules have recently been introduced and that has changed theclassification process significantly. Although being clearly more accurate, thenew rules require much more calculation work and have several parametersrelated to the thruster itself. A first Azimuth thruster has now been classified...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22078-MS
... in first year ice with a thickness up to 0.7. marintek metocean intervention vessel water performance equipment manufacturer barent sea upstream oil & gas calculation climate change calm water performance workshop air emission otc 22078 intervention task operation design...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22050-MS
... and compared with some analytical calculations. wave attenuation attenuation wave test marginal ice zone wave energy ice floe otc 22050 floe model flume theoretical calculation offshore technology conference reservoir characterization wave flume model test research and development...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22088-MS
... to the warmer seawater temperature in a matter of minutes. This assumption has been validated by thermo-dynamic calculations and OLGA verification simulations. These analyses also show that one or more days may be required to warm an insulated pipeline to the warmer seawater temperature during the same...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22159-MS
... structure diameter load resultant plane conical structure upstream oil & gas strength thickness ice load consideration subsea system diameter ice feature cone slope 45 offshore technology conference calculation sensitivity ralston method cone slope 30 otc 22159 OTC 22159...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22143-MS
... and the design of a new thruster since very little iteration is needed. The new PC rules have recently been introduced and that has changed the processes significantly. Although being clearly more accurate, the new rules require much more calculation work and have several parameters related to the thruster...

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