This book offers an analysis and generalization of various thermal-hydraulic coolant flow instabilities that occur in power equipment components of thermal and nuclear stations and have been reported in the published technical literature. The authors examine numerous examples of instability expression in a range of equipment including boilers, reactors, steam generators, condensers, heat exchangers, turbines, pumps, deaerators, bubblers, and pipelines. In addition to the traditional sections, the book includes material that, until recently, has not been reflected in monographs and education literature.