Experimental Measurements as the Basis for Determination of the Source of Pumps’ Excessive Vibration

Different methods results of data processing applied to measurements of vibrations machines (pumps P-1, P-2 and P-3) and support structures using different measurements techniques (OMA, EMA, ODS) are presented and discussed in the paper. Dynamics measurements of structures were performed with the use of a multichannel PULSE system, manufactured by the Brüel & Kjær. The main purpose of the dynamical measurements was to establish source of big excitation for P-2. Vibration velocity of pump P-2 gain 7 mm/s in case of pump P-2 not working and pump P-3 working. According to the standard ISO 10816-3 it is close to dangerous zone.