BRUSH said that its Robotic Generator Inspection System (RoGIS) is compatible not only with its own generators but “on virtually any unit with power output greater than around 10 MW”.
The company explained that it works by allowing detailed internal inspections to be carried out without the time-consuming process of removing the rotor to gain access.
At the heart of the system is a remotely-operated vehicle equipped with four high-resolution cameras and BRUSH said the RoGIS is easy to transport, so inspections can be carried out in remote and offshore locations where rotor removal can be an additional logistical challenge.
Malcolm Dunkley, lead mechanical engineer at Brush said that the potential time savings of using the RoGIS are “significant. On an average traditional maintenance project, it takes around five days to remove the rotor and prepare for the inspection and the same again to re-install it afterwards, where the robot can be set up in a matter of hours.
“The duration of the testing itself is similar with both approaches, so customers will often be avoiding more than five days of generator down-time ” especially where the location of the generator makes it complicated to withdraw the rotor.”
Dunkley added: “The video and audio feeds generated by the vehicle are reviewed live by inspection experts, so the quality of the test is equal to the traditional approach, with the added benefit that a record of the footage and data from the tests is stored and made available for later review if necessary.”