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Derail
A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended rolling stock. The device works by derailing the equipment as it rolls over or through it. Although accidental derailment is damaging to equipment and track, and requires considerable time and expense to remedy, derails are used in situations where there is a risk of greater damage to equipment, injury or death if equipment is allowed to proceed past the derail point. Applications Derails may be applied: *where sidings meet main lines or other through tracks *at junctions or other crossings to protect the interlocking against unauthorized movement *temporarily at an area where crews are working on a rail line *approaching a drawbridge, dead end, or similar hazard. Design There are four basic forms of derail. Wedge The most common form is a wedge- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derailing
In rail transport, a derailment occurs when a rail vehicle such as a train comes off its rails. Although many derailments are minor, all result in temporary disruption of the proper operation of the railway system and they are a potentially serious hazard. A derailment of a train can be caused by a collision with another object, an operational error (such as excessive speed through a curve), the mechanical failure of tracks (such as broken rails), or the mechanical failure of the wheels, among other causes. In emergency situations, deliberate derailment with derails or catch points is sometimes used to prevent a more serious accident. History The first recorded train derailment in history is known as the Hightstown Rail Accident in New Jersey that occurred on November 8, 1833. The train was traveling between Hightstown and Spotswood New Jersey and derailed after an axle broke on one of the carriages as a result of a journal box catching fire. The derailment resulted in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derail
A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended rolling stock. The device works by derailing the equipment as it rolls over or through it. Although accidental derailment is damaging to equipment and track, and requires considerable time and expense to remedy, derails are used in situations where there is a risk of greater damage to equipment, injury or death if equipment is allowed to proceed past the derail point. Applications Derails may be applied: *where sidings meet main lines or other through tracks *at junctions or other crossings to protect the interlocking against unauthorized movement *temporarily at an area where crews are working on a rail line *approaching a drawbridge, dead end, or similar hazard. Design There are four basic forms of derail. Wedge The most common form is a wedge- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derailed Train Car And Locked Derailer
Derailed may refer to: * Derailment, in which a rail vehicle leaves the tracks on which it is travelling Films * The English language title for the 1942 Danish film ''Afsporet'' * ''Derailed'' (2002 film), a 2002 action movie directed by and starring Jean-Claude Van Damme * ''Derailed'' (2005 film), a 2005 thriller-drama film starring Clive Owen and Jennifer Aniston * ''Derailed'', a 2005 BBC1 TV movie dramatization of the Ladbroke Grove rail crash The Ladbroke Grove rail crash (also known as the Paddington rail crash) was a rail accident which occurred on 5 October 1999 at Ladbroke Grove in London, England, when two passenger trains collided almost head-on after one of them had passed a ... and its aftermath * ''Derailed'' (2016 film), a 2016 action and crime movie starring Ma Dong-seok and Choi Min-ho Others * ''Derailed'' (novel), a thriller by James Siegel * "Derailed" (song), a song by German pop group No Angels * "Derailed" (''Ugly Betty''), an episode of the TV s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depot Personnel Protection System
A Depot Protection System (''DPS'') is a system designed to protect staff and equipment by ensuring the safe and controlled movement of rail vehicles into and out of train maintenance depots, a process sometimes known as train movements or shunting. This allows train maintenance operations to be conducted without endangering the safety of staff, and damaging other maintenance equipment in the depot. The most important asset in the depot are the people working there, therefore the depot protection system needs to deliver the highest level of personnel security. Depot protection system components A depot protection system consists of these basic elements: * a method of warning staff when trains are moving or about to start moving. * some method of physical protection is highly desirable and this may include a derailer or wheel stop. These, when raised, would intentionally derail any unauthorised train attempting to enter the depot, thereby protecting staff and equipment in the dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railroad Switch
A railroad switch (), turnout, or ''set ofpoints () is a mechanical installation enabling railway trains to be guided from one track to another, such as at a railway junction or where a spur or siding branches off. The most common type of switch consists of a pair of linked tapering rails, known as ''points'' (''switch rails'' or ''point blades''), lying between the diverging outer rails (the ''stock rails''). These points can be moved laterally into one of two positions to direct a train coming from the point blades toward the straight path or the diverging path. A train moving from the narrow end toward the point blades (i.e. it will be directed to one of the two paths, depending on the position of the points) is said to be executing a ''facing-point movement''. For many types of switch, a train coming from either of the converging directions will pass through the switch regardless of the position of the points, as the vehicle's wheels will force the points to move. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buffer Stop
A buffer stop, bumper, bumping post, bumper block or stopblock (US), is a device to prevent railway vehicles from going past the end of a physical section of track. The design of the buffer stop is dependent, in part, on the kind of couplings that the railway uses, since the coupling gear is the first part of the vehicle that the buffer stop touches. The term "buffer stop" is of British origin, since railways in Great Britain principally use buffer-and-screw couplings between vehicles. Types Several different types of buffer stop have been developed. They differ depending on the type of coupler used and on the intended application. * Buffer stops with anticlimbers. These are particularly important for passenger railway applications, because the anticlimbers reduce the likelihood of telescoping of the railroad cars during a head-on impact. * Buffer stops for a knuckle coupler or an SA3 coupler (centrally positioned between the two rails) * Buffer stops with traditional " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newark Bay Rail Accident
The 1958 Newark Bay rail accident occurred on September 15, 1958 in Newark Bay, New Jersey, United States, when a Central Railroad of New Jersey (CNJ) morning commuter train, #3314, ran through a restricting and a stop signal, derailed, and slid off the open Newark Bay lift bridge. Both diesel locomotives and the first two coaches plunged into Newark Bay and sank immediately, killing 48 people and injuring the same number. A third coach, snagged by its rear truck (bogie), hung precariously off the bridge for two hours before it also toppled into the water. As the locomotive crew was killed, the cause of the accident was never determined nor reinvestigated. Conditions There were three signals spaced at three-quarters of a mile, a quarter of a mile, and from the lift bridge, and an automatic derailing device fifty feet beyond the third signal. The bridge span had to be down and locked electrically before the signals and derail devices could be cleared for movement on the trac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catch Points
Catch points and trap points are types of turnout which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to derail vehicles which are out of control (known as ''runaways'') on steep slopes. Trap points are used to protect main railway lines from unauthorised vehicles moving onto them from sidings or branch lines. Either of these track arrangements may lead the vehicles into a sand drag or safety siding, track arrangements which are used to safely stop them after they have left the main tracks. A derail is another device used for the same purposes as catch and trap points. Trap points ''Trap points'' are found at the exit from a siding or where a secondary track joins a main line. A facing turnout is used to prevent any unauthorised movement that may otherwise obstruct the main line. The trap points also prevent any damage that may be done by a vehicle passin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catch Points
Catch points and trap points are types of turnout which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to derail vehicles which are out of control (known as ''runaways'') on steep slopes. Trap points are used to protect main railway lines from unauthorised vehicles moving onto them from sidings or branch lines. Either of these track arrangements may lead the vehicles into a sand drag or safety siding, track arrangements which are used to safely stop them after they have left the main tracks. A derail is another device used for the same purposes as catch and trap points. Trap points ''Trap points'' are found at the exit from a siding or where a secondary track joins a main line. A facing turnout is used to prevent any unauthorised movement that may otherwise obstruct the main line. The trap points also prevent any damage that may be done by a vehicle passin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSX 8888 Incident
The CSX 8888 incident, also known as the Crazy Eights incident, was a runaway train event involving a CSX Transportation freight train in the U.S. state of Ohio on May 15, 2001. Locomotive #8888, an, was pulling a train of 47 cars, including some loaded with hazardous chemicals, and ran uncontrolled for just under two hours at up to . It was finally halted by a railroad crew in a second locomotive, which caught up with the runaway train and coupled their locomotive to the rear car. As of 2021, the locomotive is still in service, having been rebuilt and upgraded into an SD40-3 as part of a refurbishment program carried out by CSX, although its number is now #4389. It was delivered as Conrail #6410 in September 1977. Timeline On May 15, 2001, a CSX locomotive engineer was using Locomotive #8888 to move a string of freight cars from track K12 to track D10 for departure on another train at Stanley Yard in Walbridge, Ohio, CSX's primary classification yard for Toledo. The string co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interlocking
In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junction (rail), junctions or crossings. The signalling appliances and Track (rail transport), tracks are sometimes collectively referred to as an ''interlocking plant''. An interlocking is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe. Interlocking is a safety measure designed to prevent signals and Railroad switch, points/switches from being changed in an improper sequence. For example interlocking would prevent a signal from being changed to indicate a diverging route, unless the corresponding points/switches had been changed first. In North America, the official railroad definition of interlocking is: "''An arrangement of signals and signal appliances so interconnected that their movements must succeed each other in proper sequence''". Configuration and use A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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