SAFETY ANALYSIS OF THE FLOATING POWER UNIT UNDER COLLISION

The article considers a possible navigational accident associated with the ramming of a modernized floating power unit (MFPU) by another ship. The authors suggest an approach to determine the consequences of a collision using the finite element method. The finite element model has been developed for modeling the destruction of ship hull structures, to determine the energy intensity of ship hull structures during ramming, and to calculate the critical velocity of ramming ships.
The study results provide the following conclusions: 1) the use of the finite element method in the analysis of collisions of nuclear ships helps removing excessive conservatism characteristic of engineering approaches that underestimate the energy intensity of structural elements during destruction. 2) when determining the volume of destruction of the hull structures of colliding ships and the critical velocity of ramming ships, it is necessary to use the model of the deformable bow of a ramming ship. 3) ramming the floating power unit by an icebreaker does not lead to radiation consequences at icebreaker velocity of less than 18 knots. The ramming of an unfastened floating power unit with a similar one caused by extreme natural impacts during its mooring does not lead to radiation consequences, since the critical velocity of the floating power unit of 10.4 knots cannot be achieved.
Thus, it is shown that the modernized floating power unit has a high level of safety in case of navigation accidents associated with collisions.

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