large industrial boiler in a bright, clean, gray-floored room

large industrial boiler in a bright, clean, gray-floored room. The boiler itself is a large, cylindrical metal tank with red writing at the top, indicating "AUX BOILER." Connected to the boiler is a complex arrangement of pipes, valves, and monitoring equipment, as well as a green control panel. A large, cylindrical fan, painted a light-green color, sits to the left of the boiler. A small yellow step stool is positioned next to the equipment. The room is well-lit, and there are other metal structures and pipes in the background. The overall impression is of a mechanical room containing an operating industrial boiler.