This is a smoke test of the MotoMan Flamethrower. This lightweight Flamethrower will mount onto a Motoman UP50 arm and move around while generating a 20 ft flame.
A smoke test is useful for determining the flame length of a blower type flamethrower. The flame will be about 20% longer than the length of the smoke column before it goes non linear. In this case about 25′ long. The blower generates 17,000 CFM of air and can combust 9 gallons of diesel per minute.
More on the Motoman and its maintenance/update log here