Abstract
Failure of steam turbine rotors and blades while in service can cause significant damage to the plant and put at risk the safety of personnel. Current inspection techniques result in large operational cost being incurred by the power generator. In response to this challenge, the Electrical Power Research Institute (EPRI) of the USA sponsored a project to develop and validate a system for in-situ examination of the blades and connections to enable early detection of defects in pinned-finger low-pressure turbine blades using Digital Radiography (DR) techniques. The project successfully provided a practical, safely deployable DR system which achieved the inspection performance criteria.
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