This book illustrates operation and maintenance practices/guidelinesfor economic generation and managing health of a thermal power generator beyondits regulatory life. The book provides knowledge for professionals managing powerstation operations, through its unique approach to chemical analysis of water, steam,oil etc. to identify malfunctioning/defects in equipment/systems much before thephysical manifestation of the problem. The book also contains a detailed procedurefor conducting performance evaluation tests on different equipment, and for analyzingtest results for predicting maintenance requirements, which has lent a new dimensionto power systems operation and maintenance practices. A number of real life casestudies also enrich the book. This book will prove particularly useful to powersystems operations professionals in the developing economies, and also to researchersand students involved in studying power systems operations and control.