The article considers the questions of standardizing the vibration of industrial pipelines of gas distribution stations, firstly the reducing lines, of Gazprom PJSC. The results of field studies of the vibration of the reducing lines are given. Based on these results, the estimation of applicability of the vibration standards according to the STO Gazprom RD 1.10-098-2004 operating in Gazprom PJSC is given. It is shown that the application of these norms for estimation of the vibration of pipelines with a certain type of reducing valves can lead either to the overlook of defects or to false conclusions about the presence of defects and the need of repair or structural changes of pipelines. The comparison of these norms with the norms of the STO Gazprom 2-2.3-324-2009 for industrial pipelines of compressor stations with centrifugal superchargers is performed. According to practice, the standards of the STO Gazprom 2-2.3-324-2009 plausibly characterize the vibrational state of the examined pipelines. Following the example of the methodology represented in the STO Gazprom 2-2.3-324-2009, the division of vibration of the reducing lines into the low-frequency vibration (for bending vibrations) and the high-frequency one (for vibration of pipe as a shell structure) is proposed on the basis of consideration of physical processes of pipeline vibrations. The proposed vibration norms, in authors’ opinion, allow estimating the vibration state of the reducing lines of gas distribution stations more adequately. These standards were adopted in 2017 by Gazprom transgaz Moscow LLC for industrial approbation.
Keywords: VIBRATION, GAS SURGE, REDUCTION, VALVE, VIBRATION SPEED, FREQUENCY, AMPLITUDE, MEAN SQUARE VALUE.