Method for the oscillation evaluation of gas pressure control installations by using at least one data processing device, comprising the following method steps: - detecting and/or mapping a planned or existing installation geometry, - detecting the oscillation-relevant components of the installation, selected from a group comprising pipes, control elements, shut-off elements, containers, heat exchangers, - determining the oscillation-relevant boundary conditions, comprising the mass and the geometry of the components and their support and/or clamping, - the assumption of oscillation excitation, - determining the acoustic and mechanical natural frequencies of the components under the given boundary conditions with given excitation, the acoustic natural frequencies being determined by using the previously determined boundary conditions and the speed of sound of the gas, - carrying out a coincidence analysis as a determination of the level of coincidence of the acoustic and mechanical natural frequencies for parts of the installation, characterized by the - definition of a relative index (overall index, K ges) for the installation as a measure of its oscillation risk potential, wherein the index for the installation is composed of individual indices for parts of the installation and of a general index, the individual indices are determined as a function of the coincidence analysis for the parts of the installation, and the general index is determined as a function of one or more criteria selected from the group comprising age of the installation, age of installation parts, mode of operation of the installation, number of components of the installation, number of measuring points in the pipelines, height of the installation and oscillation-induced prior damage, and wherein the method is carried out completely with the aid of the data processing device and by using one or more data processing programs which fall back on a database which comprises a component library, in which the components used as standard are catalogued and categorized, and wherein at least one data processing program determines the installation index automatically following the entry of the boundary conditions of the installation and following the selection of the components used in the installation. - detecting and/or mapping a planned or existing installation geometry, - detecting the oscillation-relevant components of the installation, selected from a group comprising pipes, control elements, shut-off elements, containers, heat exchangers, - determining the oscillation-relevant boundary conditions, comprising the mass and the geometry of the components and their support and/or clamping, - the assumption of oscillation excitation, - determining the acoustic and mechanical natural frequencies of the components under the given boundary conditions with given excitation, the acoustic natural frequencies being determined by using the previously determined boundary conditions and the speed of sound of the gas, - carrying out a coincidence analysis as a determination of the level of coincidence of the acoustic and mechanical natural frequencies for parts of the installation, characterized by the - definition of a relative index (overall index, K ges) for the installation as a measure of its oscillation risk potential,