prep tests Flashcards
after you’ve matched your motor car numbers and BFTS inspect the trip, it’s condition and components before you:
check paperwork
park brake gauge
trip lever raised
brake handle in run and release
BVICS is closed
MC is off
circuit breakers up
motor isolated switch is in
BP test switch is normal
VICERS set to operate
door loop bypass operate
1st aid kit sealed is applicable
then you can raise pantos
saloon lights on
release doors
red flag
walk clockwise
what are the three types of running brake tests
running brake test- service brake
low speed running brake test
running brake test automatic air brake
how do you perform a low speed running brake test
speed must be less than 5km/h
brake controller handle to full service
observe brake cylinder gauge
bring train to a stand
asses the trains braking performance
(if EP fails switch to air, TMM)
when must you perform a running brake test- service brake
changing ends & cutting in a new cab
anytime your relieving a train
after dividing and attaching
after a defect or alteration to braking equipment
when transitioning from dry to wet rail
how do you perform a running brake test- service brake
place brake controller to minimum application
observe ammeter / brake cylinder gauges
move brake controller further into braking zone
Assess for equivalent effort
return to run and release
at what point should you do a running brake test service brake
before your first timetables stop but not on a approach to a signal at danger
what is a good speed for a service brake test
30km/h is generally sufficient
when do you need to conduct an automatic air brake test?
after changing ends and cutting in
relieving another driver
after dividing and attaching
following a defect or alteration to braking equipment
where should you conduct an automatic air brake test?
never in the inner suburban area
but as soon as suitable after that
if the air brake test is unsatisfactory
the train needs to come out of running
max 15km/h to the next available siding
how can you perform the automatic air brake test
select a speed that will not bring the train to a stand during the test
with the brake pipe fully charged, switch to air via EP circuit breaker
brake controller to minimum reduction
BP pressure to drop BC to increase
further reduction of BP pressure until BC is at 150kpa
asses effectiveness
complete a partial release to approx 100kpa in BC by bringing handle back to run and release and then back to service zone and asses
release air brake back to run and release
ensure BP fully charges
reset EP braking
what must the attaching driver do during a continuity test with 2 drivers
confirm park brakes are ON
ensure BVICS is open
BP is fully charged
EP brake in step 7
what must the assisting driver do when conducting a continuity test with another driver
in the opposite motor
observe the brake cylinder gauge is displaying step 7 of EP braking effort and the brake pipe is showing operating pressure (250)
open the van area cock for 15 seconds and observe brake pipe pressure reduces to below 300kpa
close van area cock and observe brake pipe pressure increases to a minimum of 425 within 40 seconds
give the All Right hand signal
continuity test train prep, in the leading motor you have the train in step 7 EP brake, visually check the brakes or gauges on your walk down to see the brake is applied
on arrival to the other end check the BC and BP are displaying step 7 pressures
open the van area cock for 15 seconds and observe BP drop below 300
close and observe increase to above 425 within 40 seconds (20s for 3 car)
ensure saloon lights are on and put the pantos down
observe they lower within 10 seconds
observe battery charger fault light illuminates
observe stabling status light flashes
observe DC supply light extinguish
check air brake applies by observing BP pressure drop to 390-410 as lock out magnet valve de energises
you’ve lost overhead so BC should be 275 re: full service auto air
