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  2. Electro-pneumatic brake system on British railway trains

    en.wikipedia.org/wiki/Electro-pneumatic_brake...

    The first Southern units fitted with EP brake could be considered the Bulleid double deck 4-DDs built 1949 (4001 & 4002). The EP brake fitted to this stock was not of the self lapping type and still required the Westinghouse brake as the 'fail to safe' braking as the EP brake fitted was of the 'energise to apply' type, which meant if there was a loss of brake control voltage the EP brake was ...

  3. Stray voltage - Wikipedia

    en.wikipedia.org/wiki/Stray_voltage

    Stray voltage is the occurrence of electrical potential between two objects that ideally should not have any voltage difference between them. Small voltages often exist between two grounded objects in separate locations by the normal current flow in the power system.

  4. Residual-current device - Wikipedia

    en.wikipedia.org/wiki/Residual-current_device

    A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...

  5. Glossary of rail transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_rail_transport...

    A cylindrical reservoir, made of sheet steel, into which air is pumped and stored for use in the air brake system and train air signal line. Sometimes placed under the cab deck or between the frames in front of the guide yoke; but now two are commonly used, placed under the running board near the cab, one on each side of the engine. [3]

  6. Railway air brake - Wikipedia

    en.wikipedia.org/wiki/Railway_air_brake

    Later systems replace the automatic air brake with an electrical wire which runs in a circle round the whole train and has to be kept energized to keep the brakes off. In the UK it is known as a train wire. It is routed through various "governors" (switches operated by air pressure) which monitor critical components such as compressors, brake ...

  7. 2 Hanford tanks are leaking nuclear waste into the ground ...

    www.aol.com/2-hanford-tanks-leaking-nuclear...

    The tanks are oozing about 960 gallons a year into soil above groundwater that flows toward Columbia River.

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  9. Brake-by-wire - Wikipedia

    en.wikipedia.org/wiki/Brake-by-wire

    SpeedE, an academic concept car developed for studying drive-by-wire technologies such as brake-by-wire. Brake-by-wire technology in the automotive industry is the ability to control brakes through electronic means, without a mechanical connection that transfers force to the physical braking system from a driver input apparatus such as a pedal or lever.

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