PENGUJI PRASARANA PERKERETAAPIAN

Summary

This video script focuses on the inspection and maintenance of railway infrastructure, covering various aspects of track and bridge testing, electrical systems, and safety protocols. It details multiple-choice questions on topics like track geometry, tunnel conditions, signal systems, and the methods used to ensure safe and efficient rail operations. The script emphasizes the importance of identifying potential risks and taking the correct actions to prevent accidents, from detecting issues like cracks in concrete ties to ensuring proper drainage and safety measures in tunnels and bridges.

Takeaways

• 😀 The inspector checks railway infrastructure parameters such as rail width, rail wear, rail height, and rail force, but wind speed is not a parameter in geometric testing.
• 😀 If a concrete railroad tie shows cracks, the most appropriate action is to report the finding and recommend replacing the tie for safety reasons.
• 😀 Non-destructive testing (NDT) methods include ultrasonic, radiography, penetrant tests, and magnetic particle tests, but static load testing is not an NDT method.
• 😀 The standard voltage used for electrification systems in Indonesian railways is 1500 VDC.
• 😀 The main function of a switch point (rail switch) is to divert the train's direction, ensuring proper track alignment for safe travel.
• 😀 Water leakage in a railway tunnel primarily risks causing corrosion on the rail tracks, which can lead to severe damage if not addressed.
• 😀 The primary function of Automatic Train Protection (ATP) systems in signaling is to prevent train collisions by controlling speeds and distances automatically.
• 😀 For rail wear beyond tolerance on rail heads, the most appropriate repair method is rail grinding, which restores the rail’s profile without the need for full replacement.
• 😀 A strain gauge is used to measure material strain on railway bridge structures, helping to assess the bridge's strength and integrity.
• 😀 According to standards, the minimum distance between the main drainage channel and the track's edge should be 3.5 meters to prevent erosion on the trackbed.

Q & A

What is the primary purpose of testing railway track geometry?

The primary purpose of testing railway track geometry is to ensure that the track's width, curvature, elevation, and the strength of the track are within safe operational standards.

What should be done when a concrete tie is found to have cracks on a railway track?

The correct action is to report the finding and recommend replacing the cracked tie, as it could pose a safety risk to the railway operation.

Which of the following is not a non-destructive testing (NDT) method used for bridge strength testing?

C. Static load testing is not an NDT method. NDT methods include ultrasonic, radiography, penetrant testing, and magnetic particle testing.

What is the standard voltage used in the electrification system of railways in Indonesia?

The standard voltage used for electrification in Indonesian railways is 1500 VDC.

What is the primary function of a switch tongue on railway tracks?

The primary function of a switch tongue is to divert the train's direction by guiding the wheels from one track to another.

What is the main risk posed by water seepage in railway tunnels?

The main risk posed by water seepage in railway tunnels is corrosion of the railway tracks, which can compromise the structural integrity and safety of the tracks.

What is the primary role of Automatic Train Protection (ATP) in modern signaling systems?

The primary role of ATP in modern signaling systems is to prevent collisions between trains by automatically controlling the speed and distance between trains.

What is the most appropriate method for repairing rail head wear that exceeds the tolerance limit?

The most appropriate method for repairing rail head wear is grinding the rail. This method restores the rail's profile without needing to replace the entire rail.

What does a strain gauge measure during the testing of railway bridge structures?

A strain gauge measures the strain or deformation in materials, helping to assess the strength and integrity of the bridge's structure.

What is the minimum distance required between the main drainage channel and the railway track according to standards?

According to the standards, the minimum distance between the main drainage channel and the railway track should be 3.5 meters to prevent erosion and maintain track stability.