During the manufacturing of gunpowder, a portion of the cut powder ignited during its transfer using the worm screw mechanism; combustion spread to the feeding hopper. The automatic quenching system was triggered, and technicians activated the alarm procedure. No injuries were reported. The equipment was shut down and the raw material onsite was lost. Friction between the protective casing and the output shaft would have caused the fire to break out. It seems that the casing providing support for technicians, especially during maintenance operations, gradually deformed to a point of entering into contact with the mobile parts of the machine. Measures intended to reduce risks were adopted: in the area of prevention, the clearance between the casing and mobile parts was modified and would be verified prior to each operation; while in the area of protection, the efficiency of the quenching device would be improved by attaching nozzles and additional detectors.