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Railway Maintenance Techniques
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Track Circuit Renewal
Upgrading or replacing the electrical components of track circuits which are crucial for signaling and train detection.
Joint Elimination
Replacing jointed tracks with continuous welded rails to reduce maintenance and improve ride smoothness.
Rail Straightening
The process of bending rails back into their correct shape to ensure smooth train operations and track longevity.
Gauge Widening
Adjusting the track gauge to be slightly wider on curves to reduce flange friction and wear on trains and improve stability.
Rail Corrugation Grinding
Grinding technique specifically targeting and smoothing out corrugation, or wave-like distortions, on the surface of rail tracks.
Switch Grinding
Grinding of the switch or turnout components to restore the proper profile and remove irregularities.
Rail Flaw Repair
The process of identifying and fixing surface cracks, holes, and other detectable flaws on rail tracks to prevent rail failure.
Ballast Cleaning
This technique involves removing dirt, dust, and debris from the ballast to maintain track stability and drainage.
Flaw Detection Car Inspection
The usage of specially equipped inspection cars to survey tracks for internal and surface defects using advanced technology.
Rail Anchoring
Securing rails to the sleepers to prevent unwanted longitudinal rail movements and to maintain track gauge.
Lubrication of Rail Joints
The practice of applying lubricant to rail joints to reduce friction and wear, thereby prolonging the life of the rail track.
Ultrasonic Flaw Detection
A non-destructive testing method using high-frequency sound waves to detect internal flaws in the rail tracks.
Track Renewal
A comprehensive process that includes replacement of rails, sleepers and ballast to rejuvenate aging track infrastructure.
Undercutting
The process of removing fouled ballast from beneath the tracks and replacing it with clean ballast for better drainage and stability.
Tamping
Tamping involves lifting and correcting the alignment of track to ensure stability and smoothness of train movement.
Rail Grinding
Rail Grinding is the process of removing irregularities and imperfections from the surface of rail tracks to extend their life and improve ride comfort.
Resleepering
Replacing old or damaged railway sleepers (ties) with new ones to restore track support and alignment.
Vegetation Control
Management of plant life around tracks seeing to minimize obstruction and potential hazards to safe rail operation.
Fouling Point Adjustment
Setting and maintaining the correct position of the fouling point within the railway turnout where vehicles standing must clear to avoid obstruction.
Continuous Track Monitoring
The use of systems installed on regular operational trains or dedicated vehicles to provide ongoing assessment of track condition.
Rail Destressing
The process of alleviating built-up stresses in continuous welded rails caused by temperature changes.
Dynamic Track Stabilization
A process that applies vertical and lateral forces to the track after maintenance to simulate train loading and settle the ballast bed.
Thermite Welding
A welding method for joining rail sections using a molten metal created from a thermite reaction, ensuring a continuous and smooth rail surface.
White-lining
Marking out the correct track geometry before maintenance work, ensuring precise adjustments to the track alignment.
Plate Cutting and Drilling
The process of maintenance involving the cutting and drilling of baseplates for fixing rails to sleepers or supporting structures.
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