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1. An installation, for use with a computer, for inspecting surfaces of a pinion gear of a girth gear set operating under standard operating conditions in situ, the installation comprising: an enclosure, the enclosure including a back, a top, a bottom, sides and a front, which includes an opening, to define an interior; a transparent window, the transparent window separating at least a part of the interior from an ambient environment; at least one door operatively connected to the enclosure and retractably separating the transparent window from the ambient environment; a programmable logic controller housed in the enclosure behind the transparent window; a thermal imager housed in the enclosure behind the transparent window, is directed to the transparent window and is in electronic communication with the programmable logic controller; a visible light camera housed in the enclosure behind the transparent window, is directed to the transparent window and is in electronic communication with the programmable logic controller; and an air barrier blower attached to the enclosure and is positioned to provide an air barrier in front of the transparent window.
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