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The article describes the process of analysing and improving the rolling stock repair. 10 The problem was ineffective qualification of additional works and elements to be replaced in 11 the renovated wagons. The qualification is carried out before undertaking the repair activities. 12 Improper qualification increases the cost of renovation and, in consequence, causes the 13 customer to incur additional expenses, which lowers their trust in the enterprise. The aim was 14 to reduce the number of elements qualified for renovation and, thus, lower the unplanned costs 15 and the wagon repair time. Major problems involved in the process of qualification were 16 identified and, owing to the use of the SD method, corrective and preventive actions were 17 prepared and undertaken. The last stage consisted in the verification of the results obtained. 18

USE OF METHODS OF QUALITY MANAGEMENT FOR IMPROVING THE REPAIR PROCESS ILLUSTRATED WITH THE EXAMPLE OF ROLLING STOCK