Scheduled types of freight car repairs and their purpose Depot repairs – DR This type of car repair is carried out directly at the depot at specially equipped points. The main objective of such work is to restore the service life of cars by repairing or replacing faulty components. The scope of work is determined using preliminary diagnostic procedures. Major repairs – KR Major repairs are carried out to fully restore the service life of cars. In this case, basic structural elements that cannot be replaced during other repairs are often replaced. Major repairs with extension of useful life – KRP The main feature of such car repairs is the technical inspection of the condition of all main and auxiliary components. If necessary, the masters replace them and assign a new service life to the cars.

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Types of freight car maintenance and their purpose Depending on the scope of work and the specifics of their implementation, all of the above processes are divided into several types. The choice of one or another depends on their specifics, as well as the requirements established at the official level for all freight cars in operation. Maintenance - TO Maintenance is carried out in order to maintain the serviceability of all components of the cars. This is of great importance for ensuring the safety of the train on the tracks. Checks within the framework of TO can be carried out in formed or transit trains, and also carried out when preparing empty cars for loading. In this case, uncoupling from the main group of cars is not required. Routine uncoupling repair - TR-1 The main task of the current repair of cars is to ensure the operability of the car. It can include both repair and complete replacement of certain components. In this case, everything depends on the condition of the cars at the time of diagnostics. TR-1 is the repair of empty cars. It is carried out when preparing the train for loading. In this case, the car itself is uncoupled from the main train and transferred to special tracks, where the repair is carried out. For the period of repair, the car is transferred to the non-working yard. Routine uncoupling repair — TR-2 TR-2 repair is carried out on a loaded or empty car, which is part of a transit or arriving train. In this case, it is also uncoupled and transferred to the repair point.