Increasing requirements for product properties, whether from the side of technical standards or customers, place demands on the optimization of measurement and data evaluation processes, which include also dimensional characteristics. The article deals with determining the volume of the tank of a railway wagon with ribbing. In practice, volume flow meters are usually used to measure the internal volumes of manufactured tanks, which measure the volume of water when filled with water. The method is not only time consuming but also energy-intensive and produces a large amount of wastewater. Therefore, non-compliant methods are gradually being replaced by those that allow effective inspection of tank wagon dimensions according to the technical documentation.

The topic of the article is a description and verification of the design of a progressive method of determining the internal volume of the tank using a spatial 3D scanner Faro FocusS150 and software processing of measured data. At the same time, it is necessary to verify compliance with the requirements for the accuracy of determining the internal volume of the tank (± 1%, i.e. 850 litres). The two methods are therefore compared in terms of accuracy, complexity and time consumption.