Brake Pipe Defects

Question 1

What is the first thing you check when you lose BP pressure?

Answer 1

Check you haven’t derailed

Question 2

What can cause a loss in BP pressure?

Answer 2

Operation of safety equipment (trip hand foot)
Involuntary activation of equipment (back tripping)
Failure of equipment

Question 3

You start loosing BP pressure and you can hear the air from under the lead. What do you do?

Answer 3

Into emy
Back to run and release
If it charges, the lead trip was activated

Question 4

What do you do if you back trip?

Answer 4

Into emy BP 0
Run and release
BP should charge MR should recover
Find the affected trip and raise or isolate as required

Question 5

What speed do you do if you have a ruptured brake pipe?

Answer 5

15km

Question 6

If you have a ruptured BP when do you need a CE?

Answer 6

If the rupture is on cars 1236

Question 7

Do you need a CE if the BP rupture is on cars 4,5?

Answer 7

You don’t have to have one you can deal with it alone

Question 8

If a CE is unavailable for cars 4,5 what must you isolate and what brake are you using?

Answer 8

Isolate MR to 7 step on the defective cars and run on the EP brake

Question 9

If you have a BP defect that does not affect the BP continuity, what do you isolate?

Answer 9

MR to 7 step to prevent the EP brake from operating

Question 10

How do you know if you back tripped?

Answer 10

You’ll loose BP pressure but won’t hear any air and BP will recover after going into emy and back to run and release