The ‘DIRIS’ Class of in-situ generator inspection systems

The `DIRIS´ Class of in-situ generator inspection systems were developed to assess the health of generator stators through the use of highly specialized and cost-effective robots. The latest member of `DIRIS´ class is the `DIRIS small´ robot. Like all preceding developments, the development of the new `DIRIS´ robot extents the assessable fleet of generator types. Due to the miniaturization of the `DIRIS small´ generators below 300 MW output can be inspected now. The generator output range between 50 and 300 MW is the largest fleet within Alstom. But still generators with perpendicular obstructions like cooling deflectors cannot be assessed entirely. Therefore the development of a new robot the `DIRIS Ray´ is initiated to overcome this last flow by providing a greater maneuverability.