Special equipment is related to life safety, greater danger of boilers, pressure vessels (including cylinders, the same below), pressure piping, elevators, cranes, passenger ropeways, large amusement rides and the field (plant) special motor vehicles. Among them, boilers, pressure vessels (including gas cylinders), pressure piping for pressurized special equipment; elevators, lifting machinery, passenger ropeways, large amusement rides for electromechanical special equipment.