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On the London Underground, fluffers or track cleaning teams are people employed to clean the tracks in the tunnels. [ 1 ] [ 2 ] The passage of the trains through the tunnels draws in dust and rubbish, and removing this debris is essential to maintain the safety of the Underground, as it would otherwise create a fire hazard.
Ballast cleaning removes this worn ballast, screens it and replaces the "dirty" worn ballast with fresh ballast. [3] [4] The advantage of ballast cleaning is that it can be done by an on-track machine without removing the rail and sleepers, and it is therefore cheaper than a total excavation.
In 1977, a tunnel-cleaning train was completed. This consisted of two 1938 driving motor cars, and three purpose-built vehicles. The middle vehicle of the five contains a fan unit, which supplies large volumes of low pressure air to a series of nozzles, which disturb the dust on the tunnel walls and track.
A typical LGB model train on a garden railway layout.. LGB stands for Lehmann Gross Bahn - the "Lehmann Big Train" in German. Made by Ernst Paul Lehmann Patentwerk in Nuremberg, Germany, since 1968 [1] and by Märklin since 2007, it is the most popular garden railway model in Europe, although there are also many models of U.S. and Canadian prototypes. [2]
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A Network Rail Railhead Treatment Train uses a high-pressure water jet to remove compressed leaf mulch from the rails in the United Kingdom.. Slippery rail, or low railhead adhesion, [1] [2] [3] is a condition of railways (railroads) where contamination of the railhead reduces the traction between the wheel and the rail.