Maintenance device

A device adapted to maintain an inner surface of a structure, the device comprising:

• a support system that extends inside of the structure, the support system including a first support cable that is configured to maintain a rigid position inside the structure, the first support cable having an upper end and a lower end, the upper end anchored to a top portion of the structure, the lower end secured to a bottom portion of the structure;
• a lifting system coupled to the support system inside the structure, the lifting system including a base plate that is movably coupled to the first support cable, the lifting system further including at least one lifting motor that includes a first lifting motor that is affixed to the base plate, the lifting system further including at least one lifting cable that includes a first lifting cable, the first lifting cable connected on a first end to the first lifting motor, the first lifting motor connected on a second end to a top portion of the structure, the first lifting motor adapted to move the base plate up and down along the first support cable;
• a maintenance arm including at least one maintenance tool that is coupled to the lifting system, the maintenance arm configured to perform a maintenance action to the inner surface;
• and
• wherein the lifting system is configured to move the maintenance arm up and/or down within the structure.