Method for determining the condition of a fire-resistant lining of a metallurgical melting vessel

The invention relates to a method for determining the state of the tap of a vessel (10) containing molten metal in particular. In the process, data of the fire-resistant lining of the tap (20), such as materials, wall thickness, type of installation, etc., is detected or measured and evaluated. Said data is then collected and stored in a data structure. A calculation model is generated from the data structure on the basis of at least some of the measured or ascertained data or parameters, and said data or parameters are evaluated by means of the calculation model using calculations and subsequent analyses. Thus, in addition to measurements, related or integral ascertaining processes and subsequent analyses can also be carried out for a metallurgical vessel in order to ascertain the current state of the fire-resistant lining of the tap of the vessel after the vessel has been used.