The assessment of piping vibrations frequently presents an insolvable task for the user of piping systems. Plain and applicable directives, somewhat comparable with the approximate data for the assessment of machine vibrations, are non-existent because of the major differences in the installation and application conditions. On the basis of plain models, an option for estimating the vibration-related stresses in piping systems is portrayed. Causes and reduction measures related to piping vibrations are presented and discussed on the basis of practical examples.