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What do you do if you have a EP brake light in your loco?
- Isolate the EP brakes by pressing in EP button, then desolate. If the EP light goes out then do a running brake check. If all good carry on as normal.
- If reseting does not turn the EP light out, then you will have to re-isolate the EP and run at a speed restriction. Be mindful that can take a minute for brakes to fully activate and recharge under service braking. If you have to perform an emergency stop can take 3 mins for brakes to recharge.
What safety measure is in place to help when you have an unexpected drop of pressure in the CP?
A 7.2bar stop valve between the loco and the rest of the train. The area in the Loco is called CA. This ensures that is pressure falls below 7.2 elsewhere in the CP pressure in the Loco will remain at 7.2. Thus giving you enough air to use your brakes a few times. You have to be mindful that ones you have used your air it will not be replaced.
What would the result be to the driver if the brakes on bogie 1 where isolated?
As the direct brake pressure is linked to that of bogie one you would now not be able to use it as you would not know whether it was on or off. Therefore in this instance your 5 finger rule would change as this is the only time you would leave auto brake on at the platform and not use the direct brake.
What are three types of brake system found in the braking module and when would you use them?
- Automatic continuos brake - to brake the whole train
- Direct brake - to brake the locomotive
- Parking brake - to immobilise the train or locomotive
Indicate the possible cases for the driver to use the overcharge button. Give the three technical reasons which would involve the use of the overcharge button.
- In the event of changing locomotives
- in the event of changing ends in en tiroir operations
- When pressure in the control cylinder is higher than the CG.
- This difference in pressure may be caused by:
- A difference in the RC's in the front and rear of the train
- An over pressurising of the control cylinder owing to the heat
- a difference in the adjustment of the reducing valves of both locomotives
Name the 4 brake tests you may have to perform?
- The complete test
- The continuity test
- The function test
- The brake efficiency test while moving
What brake would you use to come to a stop while driving the shuttle?
The automatic brake
In which document can you find the immediate actions to perform in the event of brake faults?
What are the 3 objectives of the braking system
- To stop the train
- To decrease the train speed
- Stop locomotives and wagons
What are the two categories/types of brakes?
- Brakes with shoes (locomotives)
- Brakes with discs (wagons)
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