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A list of methods used to detect flaws in rails: Ultrasound - the most popular method. Visual Inspection - Primarily using cameras to detect broken or cracked joint bars in bolted rail. Liquid Penetrant Inspection (LPI) - used for manual inspection of joint bars and rail ends. Eddy current inspection - great for surface flaws & near-surface ...
A train inspection system is one of various systems of inspection which are essential to maintain the safe running of rail transport. Because safety is of high importance when train cars move across the rails, there must be inspections. The cars are heavy and have moving parts that can break or become defective.
Illustration of track circuit invented by William Robinson in 1872. Track circuit transformer on the right, new axle counter on the left (Slovenia). A track circuit is an electrical device used to prove the absence of a train on rail tracks to signallers and control relevant signals. An alternative to track circuits are axle counters.
Personal Track Safety. Personal Track Safety (PTS) is a system of safer working practices employed within the United Kingdom designed to ensure the safety of railway workers who have to work on or near the line. The principal hazards include collisions between a rail vehicle and a track worker, electrocution from traction power sources (third ...
Defect detector. Standard North American installation of a combination hot box / dragging equipment detector. A defect detector is a device used on railroads to detect axle and signal problems in passing trains. The detectors are normally integrated into the tracks and often include sensors to detect several different kinds of problems that ...
Sperry Rail Service (reporting mark SRSX) is a rail inspection company founded in 1928 by Elmer Ambrose Sperry. [1] The company was the first in the world to offer nondestructive testing of railroad tracks. Since its formation, Sperry has been contracted by most of the major railroads in North America to inspect rail.
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 ...
Maintenance of way workers repairing track in Japan. Maintenance of way (commonly abbreviated to MOW, also known as "Permanent Way Maintenance" or "PWM" in Britain [1]) refers to the maintenance, construction, and improvement of rail infrastructure, including tracks, ballast, grade, and lineside infrastructure such as signals and signs. [2]