DEVELOPMENT OF A METHOD FOR DIAGNOSING THE TECHNICAL CONDITION OF ELEMENTS OF THE MAIN POWER PLANT OF WATER TRANSPORT

Abstract

Consider the issue of developing a method for diagnosing the technical condition of elements of the main power plant of water transport. It was determined that the operation of propulsion complexes of water transport means is related to ensuring the reliability, reliability and proper technical condition of all its components - the ship's hull, the main engine and the propeller. At the same time, the greatest attention is paid to the main power plant, it is on its ability to perform the functions of converting fuel energy into rotational movements of the shaft and the propeller connected to it that the speed and maneuvering characteristics of the vessel depend. Even a temporary lack of the ability of the main power plant to ensure the movement of the ship can lead to irreversible consequences and cause accidents, environmental pollution, loss of cargo, ship collisions, harm to the ship's crew. It is noted that the criteria for assessing the occurrence of emergency events are based on strictly established risk levels. Risk identification is performed based on the analysis of hazards associated with the flow of mechanism failures in the specified period of operation. Such identification was carried out by collecting, processing and analyzing statistical data of engine logs from the operation of the main power plant of the "River-Sea" class ship over a fifteen-year period of operation. The collection and processing of statistical data was carried out for the following intervals – 1...5 years, 5...10 years, 10...15 years, and during the entire specified time, the main power plant was operated according to the continuous maintenance system. The analysis of the received information made it possible to calculate the value of the failure flow parameter of the Wärtsilä 6R32BC marine medium-speed diesel engine, which served as the main engine on a 6450-ton vessel. The failure rate values were determined; gradations of the probability of risk occurrence and the costs associated with their elimination, as well as calculated matrixes of the distribution of the probability of risk occurrence of elements of the marine diesel engine. It is the calculation of risk probability distribution matrices that is proposed as a method of diagnosing the technical condition of elements of the main power plant of water transport.