Motive power depot
Encyclopedia
Motive power depot, usually abbreviated to MPD, is a name given to places where locomotive
Locomotive
A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

s are stored when not being used, and also repaired and maintained. They were originally known as "running sheds", "engine sheds", or, for short, just shed
Shed
A shed is typically a simple, single-storey structure in a back garden or on an allotment that is used for storage, hobbies, or as a workshop....

s. Facilities are provided for refuelling and replenishing water, lubricating oil and grease and, for steam engines
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

, disposal of the ash. There are often workshops for repairs and maintenance, although locomotive building and major overhauls are usually carried out in the locomotive works.

MPDs in Britain are now often known as traction maintenance depot
Traction maintenance depot
In the United Kingdom, a traction maintenance depot, or TMD, is a railway depot where locomotives are serviced and maintained. A traction and rolling stock maintenance depot, or T&RSMD, is a maintenance depot where locomotives, multiple units and rolling stock are serviced and maintained. Each rail...

s.

German practice

The equivalent of such depots in German-speaking countries is the Bahnbetriebswerk
Bahnbetriebswerk
A Bahnbetriebswerk is the equivalent of a locomotive depot on the German and Austrian railways. It is an installation that carries out the maintenance, minor repairs, refuelling and cleaning of locomotives and other motive power. In addition it organises the deployment of locomotives and crews...

or Bw which has similar functions, with major repairs and overhauls being carried out at Ausbesserungswerke. The number of these reduced drastically on the changeover from steam to diesel and electric traction and most modern Bw in Germany are specialised depots, often responsible for a single rail class
Class (locomotive)
Class refers to a group of locomotives built to a common design for a single railroad. Often members of a particular class had detail variations between individual examples, and these could lead to subclasses. Sometimes technical alterations move a locomotive from one class to another...

.

See also

  • Ausbesserungswerk
    Ausbesserungswerk
    An Ausbesserungswerk is a railway facility in German-speaking countries, the primary function of which is the repair of railway vehicles or their components. It is thus equivalent to a 'repair shop' or 'works'...

  • Bahnbetriebswerk
    Bahnbetriebswerk
    A Bahnbetriebswerk is the equivalent of a locomotive depot on the German and Austrian railways. It is an installation that carries out the maintenance, minor repairs, refuelling and cleaning of locomotives and other motive power. In addition it organises the deployment of locomotives and crews...

  • List of British Railways shed codes
  • Roundhouse
    Roundhouse
    A roundhouse is a building used by railroads for servicing locomotives. Roundhouses are large, circular or semicircular structures that were traditionally located surrounding or adjacent to turntables...

  • Traction maintenance depot
    Traction maintenance depot
    In the United Kingdom, a traction maintenance depot, or TMD, is a railway depot where locomotives are serviced and maintained. A traction and rolling stock maintenance depot, or T&RSMD, is a maintenance depot where locomotives, multiple units and rolling stock are serviced and maintained. Each rail...

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