The critical incidents of the brash ice accumulation are considered using the port of Sabetta as an example. The heat volume, required for the keeping the certain thickness of the brash ice layer is determined using a thermodynamic simulation. The simulation results determine the power capacity of the required heat producing generator. The various methods, that can be used to reduce the energy consumption costs are described, such as: scheduling of the vessels traffic, change of the vessel movement scheme, optimization of the location of the bubbling lines and discharge points of the heated water.

INTRODUCTION

Currently, active development of the Arctic coast of Russia is under way. Mining companies developed the vigorous activities for development of oil, gas, gas-condensate and other fields. A maritime transport plays an important role in these works. It delivers consumables, machinery and ready-made structures to the Arctic to build the infrastructure. The developed fields begin to supply the raw materials (hydrocarbons and other) to markets by sea.

The largest economic activity is observed in the Ob-Yenisei region. It includes the construction of ports and other hydraulic facilities. The port of Dudinka has long operated on the Yenisei River. It provides a transportation of finished products from Norilsk mining and metallurgical plant. The port of Sabetta and the terminal "Arctic Gate" in the Ob' bay had already built for LNG and oil offloading. The design and construction of other facilities, mainly in the northern part of the Ob' bay, continues. The "Utrennyi" terminal is being built on the Gydan Peninsula and it is part of the port of Sabetta. The LNG carrier vessels will be loaded with liquefied natural gas at this terminal.

The development of the region is causing a transfer from seasonal sea transportations to year-round traffic. In the Yenisei Gulf, a regular winter sea navigation from the port of Dudinka is carried out since 2008. In the Ob'Bay, a regular winter navigation is carried out from the port of Sabetta since 2013 and from the oil terminal "Arctic Gate" near Kamennyi Cape since 2015. During this time, a sea traffic, for example, in Sabetta, has grown from single calls to several hundred vessels per season.

Keywords:
gas monetization, thickness, sabetta, lng, traffic, liquified natural gas, marine transportation, calculation, ice accumulation, port water area
Subjects:
Natural Gas Conversion and Storage, Liquified natural gas (LNG)
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2020. International Society of Offshore and Polar Engineers
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