HCMT Running brake test Flashcards
When must a driver perform a running brake test?
When a driver relieves another driver
When the direction of travel is changed
When the train consist is altered
What is the purpose of performing a running brake test?
To test the effectiveness and serviceability of the trains brakes.
Used to test the correct operation of the brakes while the train is in motion
What are the two types of running brake tests?
Low speed running brake test – service brake
Running brake test – service break
When is a low speed running brake test required
When docking out of a sliding location on a previously prepared train
What is the speed at which a low speed running test is performed?
5 km/h on departing the siding
What are the steps of the low speed running brake test?
- Follow location departure requirements,
- When authority to depart is received, power the train to 5 km/h
- Place the MC to the full service position of the breaking zone
- Bring the train to a stand
- Once the train has stopped, Assist the performance of the braking
- Observe, full service, brake cyl. pressure
What must a driver do if a brake test is unsatisfactory?
Report the fault immediately to the train controller via TMM
How is a running brake test – service brake carried out
Whilst the train is in motion on the main line, and it sufficient speed to ensure that the brake is operating effectively
When must a service brake test be carried out?
At the first suitable opportunity prior to the first scheduled stopping location in the following situations:
- After taking control of a train
- When changing ends
- When transitioning between dry to wet rail
- Following a defect or alteration to train braking equipment
How is a running brake test performed?
•. Depart the location according to signal aspects and correct platform departure procedure
•. Power the train to a speed relative to track conditions /aspects etc.
•. Place the MC into the min. braking position
•. Observe, equivalent, braking effort, using the effort achieved tile on the TMS and the brake cyl. gauges
•. Move the MC further into the braking zone
•. Re-asses for an increase in braking effort, equivalent to the position of the MC
•. Return the MC to coast
What occurs with the braking system in the event of excessive slide?
The braking system will automatically initiate the sanding function
When, braking in low adhesion conditions, what must a driver do to accommodate any wheel slide events?
Brake earlier, and a lighter
If there is a wheel slide event that continues or it becomes apparent that the train will have difficulty in stopping as intended, to what pos. must a driver place the MC ?
MAX brake
