Presents a guide to the application of non-destructive testing (NDT) in condition monitoring regimes. Examines six, established NDT techniques, describing the testing methods and the effectiveness of each method in detecting faults in different types of building services plant. Provides guidance on the cost-effectiveness of each method. Lists relevant standards and suggests further reading. Includes details of trial applications. Briefly describes five, innovative inspection methods which have potential for use in condition-based maintenance. Includes three condition monitoring fact sheets as case studies. Chapter headings are Introduction, Acoustic emissions, Vibration analysis, Thermography, Power quality, Lubricant and fluid analysis, Ultrasonic testing, Novel NDT techniques, BSRIAs CBM services, Case studies.