Dear Friends*

In our power plant* the detectors are inaccessible for maintenance due to safety conditions(Energized electrical equipment and excessive height).
1. Is there any solution for cleaning the detectors without erecting the scaffolding? Erecting scaffolding would disturb the process operation which is not desirable.
2. Is there any equipment available to remove the detectors from a height more than 20 meters?

Thanks in Advance.