Railway Signalling Relay and Circuits nomenclature Presentation

Railway Signalling Relay and Circuits nomenclature Presentation

Railway Signalling Relay and Circuits nomenclature Presentation Equipment Identity Consistency should be maintained for nomenclature marking or labeling on the equipments in circuit diagrams. Terminals of an item of apparatus should be uniquely identified. Terminal numbers/letters should appear as suffix to the equipment code. Position code may be given for identifying the location of the equipment. […]

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Railway Signalling Drawing Methods|ONE DRAWING METHOD|TWO DRAWING METHOD

Railway Signalling Drawing Methods

Railway Signalling Drawing Methods * Red and Green are the colors used in  production process of designs to indicate changes. * RED – New equipment provided for installation/commissioning * GREEN – Redundant equipment identified for recovery.   ONE DRAWING METHOD * Both recoveries and new proposals are indicated in a single sheet of the drawing. […]

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Railway Signalling Site surveys

Railway Signalling Site surveys

Railway Signalling Site surveys Site surveys-1 * Site surveys are to be conducted to assess the status of various equipments to list out the requirements for replacements/modifications/improvements to the system wherever necessary. * Survey to be requested in case new locations/cases/REBs are proposed * Survey is required where new track side equipment is proposed. Site […]

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Correlation

Network Rail Design Process |Correlation|Correlation waiver

Network Rail Design Process Source Records * Source Records are the documents necessary for producing any design. * The source record should show the state of the current infrastructure. * It may be in the form of CAD files, Data files, or Negatives(NR/L2/SIG/11201/Mod-A8). * There should be one “Master Record” which is on white paper with […]

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ATP

Automatic Train Protection Railway Signalling Equipment

Automatic Train Protection Railway Signalling Equipment What is Automatic Train Protection? *  Automatic Train Protection (ATP) is a safety system which continuously monitors the train performance and speed, and applies the brakes if an unsafe situation should arise, a train is going too fast. *  It will also apply the brakes to stop a train […]

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Aspect Sequence Chart Railway Signalling

Aspect Sequence Chart Railway Signalling Definitions: Aspect – any valid visual indication of a signal as displayed to the driver Aspect sequence – The order in which the aspects of successive signals are displayed to the driver Signal spacing – The distance between the signal or lineside sign displaying cautionary aspect and the signal or lineside sign at […]

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Railway Planning for Outdoor Cable requirement

Railway Planning for Outdoor Cable requirement

Railway Planning for Outdoor Cable requirement Requirement of cable conduction is to be determined depending upon the circuits run from CT Room /Relay room function. Separate cable line wise and if necessary, function wise are laid from relay room /CT room to facilitate easy testing of cable without much distraction to the traffic. Cable size […]

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