The electric generator is a highly stressed plant component requiring periodic inspection and maintenance to reduce the risk of a costly forced outage. This paper briefly introduces two new robotic technologies for performing fast and reliable inspections of two pole electric generators with minimal mechanical disassembly requirements. The first robotic system is designed to inspect within the generator rotor and stator air gap, while the second robotic system is designed to inspect the generator retaining rings. An overview of the design and construction of each system is provided, along with an explanation of the capabilities and benefits they bring to the power station owner.
 Sapre, V., Savenkov, M. and Fischer, R. (2014) Advanced Generator Robotic Monitoring—Maximising Availability, Minimising Costs. Proceedings of the 27th International Congress of Condition Monitoring and Diagnostic Engineering, Brisbane, 16-18 September 2014.
 Posedel, Z. (2001) Inspection of Stator Core for Large Machines with a Low Yoke Induction Method-Measurement and Analysis of Interlamination Short-Circuits. IEEE Transactions on Energy Conversion, 16, 81-86. http://dx.doi.org/10.1109/60.911408
 Viswanathan, R. (Ed.) (1982) Workshop Proceedings: Retaining Rings for Electric Generators. Electric Power Research Institute (EPRI) EL-3209 Research Project 1876 Proceedings, Palo Alto, 11-12 October 1982.