Device operational degassing emergency braking portions w / w composition at Strait liquid dangerous chemicals transported w / d transportation, comprising a container with neutralizing fluid, mounted on the chassis w / d wagon coupled pipes with a reserve tank of compressed car air used in the braking system, w / w composition, and a conduit for outflow neutralizing fluid, characterized in that it is positioned in front of the first special tank wagons with hazardous chemical substances in the course of d The motion of the train within the container with neutralizing fluid is fixed siphon to the nozzle manifold which is connected an air conduit, which is set automatically triggered by emergency braking of the train spill hazardous chemicals electropneumatic valve which, in turn, through a gearbox connected to a spare tank of compressed air , a conduit for outflow the neutralizing liquid has two slit valves with an opening angle of at least 120 °, arranged under the lower part w / d wagon, n When this valve outlets are arranged symmetrically at a distance of 80 cm from the center line of the car and facing in the opposite direction of the train.
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