BRAKE FAULTS Flashcards
What does sanding equipment do to the wheels on low adhesion rails?
Improves the grip
What does the rule book state if you become aware of any defects which involve the braking system?
You must stop the train immediately if you have difficulty stopping the train (if it remains in service)
In most cases, what will a defect in the train’s braking system cause the brake to automatically apply?
The emergency brake.
A train must not start a journey from a maintenance depot if the braking system is defective. True or false?
True
What must you make sure about the brakes before allowing a train to start a journey?
The brakes are working correctly.
If a train has defective or isolated brakes, who must give you permission to start the journey? 2 answers
operations control and the signaller
What speed must you travel at to maintain full control of the train?
A reduced speed.
If authority is given for a train with defective isolated brakes to continue a journey, what must be followed?
the relevant rules and operational procedures
What must you do with the train if you suspect that the braking system is defective?
Stop the train
If you experience an unsolicited brake application due to a defective braking system, what must you do with the train?
Secure the train once at a stand and carry out fault finding checks.
What would you do to prevent any further train movements?
Secure the train
Before leaving your cab (during a brake application/defect) what must you have authority to do and what must you obtain from the signaller?
Authorisation to work alongside your train
Obtain the line block/posession
In some cases, braking system faults can be overcome by operating what switch?
Emergency bypass switch.
How would you identify defective braking systems? 7 answers
Poor braking performance
A brake application not initiated by the driver
Excessive noise/heat coming from the braking systems
Brake pressure gauge showing air in the system when brakes are released
Brake pressure showing incorrect or erratic readings
Isolation cocks in the incorrect position
Smoke coming from the braking systems
What checks must you make if you experience an unsolicited brake application (a brake application that you did not initiate)? 5 answers
Check the TPWS brake demand light
Check the main reservoir and brake pressure
Check MCB’s
External hazard lights
Check the train is complete
