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Navigation’s safety improving by efficiently analysis of the ship’s power Plant energy flows interconnection

Veretennik A., Kulyeshov I., Mikhailov S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2022

Vol. 16 No. 1

39--42

The operation of an autonomous movable objects, such as a sea transport vessels, implies the presence of a source of potential energy on board the vessel and the possibility of converting this energy into the work required for the autonomous movable object (vessel). Being an autonomous object, a transport vessel should be provided with energy for it moving, energy for heat exchange processes on board and electricity for powering electrical equipment, automation and navigation systems, and household needs on board. An analysis of the component of the engine room equipment made it possible to designate (combine) the generating equipment of mechanical energy flow, equipment which are generating the heat energy flow and equipment which are generating the electric energy flow. Based on the results of the research the relationships between the energy flows are identified connections and ways to ensure stabilization of energy generation on board the cargo vessel is outlined. Using the results of the research the relationships between the energy flows will reduce the likelihood of accidents on board a cargo vessel due to a stop in the generation of one of the energy flows and thereby ensure increased safety of man at sea. Taking into account the peculiarities of the distribution of energy flows in ship power plants can be an effective tool not only to improve the economic performance of it, but also to increase the safety of navigation and navigation in general, due to the reliable provision of uninterrupted and efficient operation of ship power plants.

Analysis of factors affecting fractures of rails welded by aluminothermic welding

Sergeyev D., Mikhailov S.

Logistyka

2010

nr 6

The thermic welding of rails is carried out in the following sequence: a mould is placed on the rails to be joined; a crucible is mounted on a special bracket; a portion of thermite is charged; the rail ends are pre-heated and thermite is ignited by a special ignition primer. On Latvian Railway, the use of the thermic welding is widespread using the Elektro-Thermit Company technology. Today it is a basic method for rail joints.The analysis of the metal structure in the thermic welded zone of rails showed that the weld metal had inclusions of iron oxides infused (FeO, Fe2O3, and Fe3O4) and small pores. Pores and infused oxides are concentrators of stresses and sources of cracks development. Pores and infused oxides reduce hardness of the weld joint under the action of tensile forces.