The reliability and failure mechanisms of high energy pumps used in the utilities industry and the high suction specific speed pumps used in the hydrocarbon processing industry show surprising parallels as to root causes. Both groups of pump operators have realized that many types of repeated failures are related to flowrates and other factors of pump hydraulic design. Despite the high number of pump failures reported by both groups, a relatively limited amount of work has been conducted into recognizing and correcting damaging hydraulically induced vibrations. A better understanding of the symptoms of hydraulic instabilities as demonstrated in vibration patterns is needed to detect impending failures. The author discuss, in a simple manner, some of the basic questions of where to start and how to conduct the problem analysis and then apply corrective measures to centrifugal pumps.
Nelson, William E. (1992). Pump Vibrations. Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University. Available electronically from