general Flashcards
persistent faults
have symptoms that are always present, eg ruptured break pipe
intermittent fault
could be something like air con dripping out on a hot day
what things can the PD help desk advise
assistance in fault finding
signal reverting causing PAE
fault that will impact running
or error by a driver that will impact running
what info do you need from TC to finish an TMM
fault category
fault reference number
pink in the cab, green for the driver
how long does a maintenance fault get?
90 days
maintenance does not impact safe operating of the train will not prevent it from service.
eg minor blow of air
ED inoperative
externally cracked window
when may a serious fault re-enter service
as soon as reasonably practicable.
serious priority
serious return
serious end run
critical fault is a failure of safety systems/equipment
passengers must be detained and train shunted
rectified in running
fixed by intervention if a driver or train system
remarshalled fault
when a centre cab becomes a trailing cab
where do you put the fault warning notices
two yellow one for each end cab and keep the green one. they must be moved if the train is remarshalled
how do you try to fix a whistle?
hit the whistle a few times
if the whistle won’t sound how do you drive differently
re-open doors if people are late
15km max through yards, stations or near employees or people walking near the line
flash head lights when crossing lvl crossings
if you think people near the line aren’t aware of you slow down or stop
drive to conditions, curves, visibility,
are there restrictions if only one headlight is defective?
no
if both head lights are defective in day light what are the restrictions?
50km max through MURL and west richmond tunnels
if both headlights are out in darkness
50km hour max between stations and crossing loops
15km max over level crossings or through stations, yards
display white marker lights
frequent whistle
this is a critical fault
if there are skidding wheels over a section and the infrastructure personnel are not available what will TC do
get flaggies out to instruct drivers to go 15kmh until the track is fixed
if the front axle is jammed can you drive the train
not from the lead you have to set back or be rescued
80-99% (2 isolated) bogies operable
reduce speed by 10km/h until 60km/h
50-80% (6-9) bogies isolated
travel at extreme caution no passengers
if there are less than 50% so 5 or less bogies isolated
you are disabled you can’t drive
what must you do in addition to a TMM for an isolated bogie
FWN a yellow copy for each end and keep the green copy and put stickers above to speedo to indicate speed restrictions
how many bogies can you isolate on HCMTs to remain in service
3
the bogie isolating cock is self venting. that means that when isolated the breaks will release on that bogies
it may be necessary to isolate the SPB it may be necessary to isolate the SPB and release it as well if the break block does not clear the wheel
FDCL between stations
make a PA to clear doorways
ask passengers to make a PEI if they see an obstruction
view mirrors
reduce speed
TEC to TC
stop at next station regardless of timetable
if you come to a stop while the the door light is flashing when will you get traction
once it’s stead or bypassed
once the door loop is bypassed can you turn it back?
no?
how many doors can you isolate to remain in service
one per side per car
can a train go into service if a can door cannot be secured
no
if the safety film is in tact inside and the window is cracked can you dock up?
yep
if the safety film is compromised can you be in service?
only if protected by a competent employee
how can you check if the window has a film
use your fingernail to check 5mm from the edge of the window
what must you take when protecting a train and how far do you go?
radio
keys
DRA
red flag/ torch
drivers are not to fit transition couplers
true
powering and braking from behind
15km/h
powering and braking from the front
reduced speed cautiously
powering from the back and braking in the front
40
if comms fail
how can you get a proceed
green flag
all right hand signal
bells
whistle code
the trip of the leading can must be lowered unless defective
unless you are driving from the rear then you can drive on the secondary with it raised because the stop arm will be raised by the time you get to it
1500v dc panto faults
damaged carbon strips
damaged panto heads
damaged panto arms
main res air leaks
electrical defects
end of overhead
dissaranged wires
how do you isolate pantos electrically
with the toggle switch
if there are burn marks or metal on metal on the panto
it must be lowered isolated and booked
can you use a crank handle to lower a panto?
yes but not raise it
ROBBDS TEST procedure INITIAL CHECKS
trip- set and lowered
switches- normal position
CBs normal, door close button steady blue
gauges- main res, brake pipe, control res
cocks- BIVICS red EC
ROBBDS TEST procedure after initial checks 110v dc supply
check supply light
doors open close
LP flag is lowered ep works
bell operates
ROBBDS TEST
Reverser
traction overload
brake pipe reduction
control governor bypass
door loop bypass
second master controller
what lights will you get for rheo faults
rheo brake light
local
what lights will you get for traction faults
local
line switch
what does the control res do and where does it operate
490
keeps the trip in position
operates equipment in the main equipment and line breaker case
what does it mean if the line switch light is on?
air can’t get to the line breaker case and close the circuits so there is no traction for that car only
you can try and fix traction and rheo faults by using the
traction overload button, if it doesn’t work switch the motors out and book it, that car won’t have motors
what else will fleet maintainers do if they tune the main switch
put an equipment sticker on the bulkhead
(auxiliary isolate is for MA and air compressors)
loss of over head with comms
the substation will try and reset twice; TC will stop all trains and ask to lower pantos, substation will try and reset, if successful TC will contact each 1 by 1 to raise one panto and one MA at a time and determine which train and which panto has the problem. once isolated each train will be set off one minute apart to avoid drawing too much power at once. drive in series until advised by TC.
loss of overhead no comms
don’t assume it’s loss of overhead, take initiative. check trips switches gauges and cocks. check DC supply. check AC supply, headlights saloon lights) try to reset MA on the underframe, repeat in leading centre. if still no compressors assume it’s loss of overhead TOTS
if you lose overhead and there’s no comms and then it comes back
you can drive off if your an up train after 30 seconds
and if your a down 60 seconds
drive in series
how long do you have on the battery in a comeng
2 hours
when will the LSM activate?
after 2 continuous seconds with less than 95vdc from overhead
what are the components of the LSM
the time delay relay which activates 4 mins after the BIVICS closes
the speed threshold of 8kms
what happens above the speed threshold when loss of overhead
the pantos will stay up
EP trips- LP flag up, air brake (lead)
MAC stays on in the lead, off in the trailing motors
MA’s shuts off
what happens when loss of overhead under the threshold
lead panto stays up
trailing pantos will lower
MAC stays on in the lead, off in trailing
MA’s turn off
EP will trip, LP flag, air brake
the VICERS application valve will activate after 5 minute of loss of overhead
leave brake handle in emergency so it doesn’t waste main res air on trying to charge the VICERS
what will be the effect of a weak substation output
reduced reactive effor
reduced rheo performance
loss of one or more MAs
loss of one or more air cons
what jolene once a weak substation has been identified
TC will ask one train at a time in that area to raise all the pantos and start only lead MA. drive in series until next substation area
when does the wheel slip light illuminate
when there is more than 15km/h difference between axles
where are the frequency generators and wheel slide cables?
1357
what is protected by the control circuit breaker
control circuit reverser
master controller
control governor
rheo brake
panto raise and lower
traction overload reset
auxiliary control circuit breaker protects
Bell
auxiliary start
doors release and close
saloon lights on and off
couple and uncouple
air con #1 control
local rheo brake
schafenberg coupler self centre
CONTROL CB
train line panto raise
manually raise panto individually by EP button, local panto raise button
CONTROL CB
train line panto lower
isolate panto electrically, (toggle switch) individually. once the fault is found lower and isolate that panto locally
CONTROL CB
traction overload reset button
locate this car light, isolate motors all out
CONTROL CB
master controller closed, reverser off brake in release no panto buttons or traction overload reset pressed
there’s a short circuit in the wire between the control cb and master controller. can’t drive from there
CONTROL CB
master controller is closed, reverser is off brake is APPLIED
1 defective rheo- isolate local rheo via toggle
2 short circuit in rheo demand(train lined cable) - isolate trainline cable by tripping EP CB
3 short circuit between CB and master controller- drive from another cab
CONTROL CB
master controller is open
try lower notches
if trips in 4, try 123
if in 3. 12
if in 2. 1
CONTROL CB
master controller is open notch 1 shunt trips
defective traction control equipment (traction motor) or control circuit cable is defective
1 isolate lead car motors
2 isolate leading centr car motors
3 divide the 6 cars and recouple non-electrically
4 if lead CB stays on issue is another unit drive from lead unit trip EP CB door loop bypass de train
5 if lead CB trips can’t drive from there, trip EP and door loop and de train
