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techav Flashcards

1
Q

what is the primary safety apparatus

A

Trip
Emergency application valve
Control governor
Hand and foot pilot valve
Anti-neutralisation device
VICERS

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2
Q

what happens when you turn the red EC cock

A

you isolate the primary safety apparatus and activate the secondary safety apparatus

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3
Q

where are the red EC and yellow TECHAV cocks located

A

B side under the drivers window adjacent to wheel 8 on motor cars only

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4
Q

when might you drive on the secondary safety system?

A

rescuing a train, suffering a fault to one of the TECHAV mechanisms

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5
Q

what is the secondary safety apparatus?

A

Foot operated pilot valve
Emergency pilot valve
Emergency control governor
Control governor by pass push button

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6
Q

what does the control governor do?

A

regulates the amount of pressure in the brake pipe to let the train move

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7
Q

how do you engage the secondary safety system?

A

modified cab unattended
turn the red EC of the driving cab
isolate VICERS key switch
operate foot pilot valve
press by pass push button

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8
Q

how often does the control governor by-pass slush button flash?

A

every 30 seconds for 10 seconds before engaging emergency

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9
Q

what happens if the red EC cock is turned on a non driving cab?

A

the brake pipe will exhaust to atmosphere rendering the train disabled

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10
Q

if you have an issue with the primary safety system in a non driving cab what do you do?

A

turn the yellow TECHAV cock to isolate the entire system and re-instate the red EC

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11
Q

what does the yellow techav cock do?

A

isolates both the primary and secondary safety systems

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12
Q

where are Spring Park Brakes located

A

wheels 1,3,5,7

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13
Q

what must a driver look at when performing cab unattended procedures

A

the illuminated red Train Line Park Brake button

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14
Q

how can you visually tell a park brake is engaged locally?

A

the gauge will tell you for the wheel locally

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15
Q

how is a spring park brake applied?

A

the spring is applied by exhausting air to atmosphere

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16
Q

where is the spring park brake gauge?

A

on the A side wall, green is off red is on

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17
Q

how do you engage train line spring park brake?

A

press the red park brake on button for 5 seconds

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18
Q

how do you release train line spring park brakes?

A

hold the green park brake off button for 5 seconds
park brakes will not release unless the reverser is in forward neutral or reverse

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19
Q

how long until the train lined buttons become active after 1 motor Alternator is applied

A

60 seconds

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20
Q

how can you energise the train line system?

A

1 panto and 1 motor alternator are needed

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21
Q

when will the train automatically engage spring park brake

A

after the train has been in neutral for 60 seconds

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22
Q

why might you need to isolate a spring park brake?

A

if there is a leak of air in the piping

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23
Q

what might you do if there is a defect regarding the spring park brake isolating cock

A

turn the spring park brake button to the on position and manually release the spring park brake

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24
Q

manual release SPB knorr

A

use your hand to turn one click anticlockwise, knorr cannot be manually re-instated

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25
manual release SPB westscode
use the socket and brace to turn 6-8 times anti-clockwise
26
manually engage SPB westcode
with socket and brace 40 to 60 turns clockwise until the nut will turn no further (park brake button must be ON!)
27
how many SPB isolating cocks are there?
1 per bogie per motor cab so 8?
28
what are the VICERS tasks?
Powering breaking whistle
29
what are the 5 components of VICERS?
1 task linking 2 acknowledgment button 3 audible buzzer 4 fault indicator 5 activation valve/ relay
30
what does the VICERS need to run?
110vDC
31
how long will VICERS function after loss of overhead?
5 minutes until it will shut down and apply emergency brake
32
how does the VICERS apply emergency brake after 5 mins no overhead
valve on comeng is opened air released relay will brake the electrical circuit
33
how can you reset the VICERS
kPa below 25 (emergency) 0km/h 10 seconds push acknowledge button
34
what are the three positions on VICERS key switch?
isolate (covered by a flap) operate test
35
what key is needed to turn the VICERS switch from isolate to operate?
pink fitters key
36
what does the isolate position on the VICERS switch do?
stop the acknowledge button, used when travelling on the secondary safety system because the by pass button is enough to focus on
37
what happens if you press the vigilance button for 5 continuous seconds?
emergency applied
38
the VICERS runs on 110v DC attached to the brake pipe, it is energised to hold closed and will dump if if the timing cycle is not acknowledged/ opening the brake pipe dumping air?
39
how do you test VICERS?
brake pipe needs to be fully charged (above 500 kPa) reverser to OFF trip lowered and set BVICS open key switch to test button will flash noise will sound fault light will illuminate and extinguish when test is complete
40
what are two reasons for VICERS faults?
fault with vigilance system loss of brake pipe air pressure
41
what to do if VICERS fault?
never isolate without permission 1 lift the flap 2 insert blue key 3 turn left 90 degrees report via TMM (the fault light will remain illuminated after isolation)
42
how does the trip work?
brake pipe pressure feeds directly into the trio valve and if the trip is activated the valve opens air exhausts
43
how can you reset a trip?
place brake to emergency position needs 0 kPa to ‘set’ (when it has been activated it will continue to exhaust brake pipe pressure until it has been set)
44
what can you do if brake to emergency position doesn’t reset the trip
manual reset button on top of the trip valve
45
can you get traction if the trip isn’t set?
no
46
what is a good kPa when trip is activated?
under 150 but not 0 or it will reset
47
low pressure flag
two positions, lowered and raised
48
what does the LP flag monitor?
main res pressure, will raise if falls too low electrical current to the EP/rheo via the electro magnetic valve
49
what is ideal brake pipe pressure?
550 min 425
50
what is the main res range?
585-725
51
trip set/reset pressure
500/0
52
control governor open
no power
53
control governor closed
power
54
VICERS reset
below 25 (brake to emergency)
55
what controls the main res
compressor governor
56
BIVICS open
1 main res air through brake controller into brake pipe 2 blue close door button illuminates 3 rheo/ED brake 4 low pressure flag down = lockout magnet valve energised
57
what does the LP flag warn?
that pressure in the main res is below safe level / 500 kPa the EP out due to failure or isolation of power supply to lock out magnet valve brake valve isolating cock and switch is closed
58
when the LP flag is up who monitors main res pressure?
we do
59
how do you isolate the LP flag?
turn the EP MR isolate cock
60
list the cocks behind the panel door next to the park brake
PANTO EP MA EP TRIP GEAR BP SENSOR PANTO & MA EP MR
61
couple button
de-energises the self cantering device for couplings on a curve
62
uncouple buttons
when the train is set up you can use these to uncouple
63
compressor contact or button
controls air compressor on the motor car of that switch
64
what are the two things the duplex gauge tells you
main res pressure- red air pressure in brake pipe- white
65
what does the brake cylinder gauge indicate
air pressure in the brake cylinders of the no.1 bogie it is fitted to
66
amp meter tells us?
electrical current flowing to the traction motors on the motor car it’s fitted too during powering or rheo breaking
67
how long must you press saloon door buttons?
2 seconds always wait for a steady blue light
68
safety system isolation
when illuminated indicates door loop system has been by passed to allow traction when flashing door light is operating
69
local fault light
over load had tripped within the traction equipment system or rheo braking system
70
line switch illuminated
fault with power supply to traction motors or Line Breaker case
71
air con lights
off- air con works steady one air con has failed in a carriage flashing- both have failed in the same carriage
72
supply light
illuminated indicated that 110 v DC is operational at least one motor alternator is operating for this
73
wheel slip light
if it is steady when the train is stationary it means there is a fault in the wheel slip system
74
centre cab light
when marker light switch is set to ‘centre cab’ which means they’re extinguished - if set to centre can incorrectly the door loop system will fail
75
test button
is to test the lights on the fault panel
76
marker light switch
auto- when the train is attached red- for emergency situations white- when reverser is off centre cab- for centre cabs of attached units (may be cause for blue flashing light)
77
how long will emergency marker lights continue
2 hours, after 1.45 the light status will flash and need to be reset by changing the status of the lights it can then be reinstated. emergency marker lights will activate if pantos are lowered or loss of overhead
78
stabling indicator light
will illuminate when train is being stabled if the marker lights are set to auto the stabling indicator will flash for 15mins and then both indicator light and marker lights will extinguish
79
if your marker light is in the correct position it will stay on for 15 mins
if they are in the wrong position they will last 1hr45
80
reverser positions
0 coast 1 shunt 2 series - good for taking off in wet weather or on a medium speed aspect 3 parallel 4 weak field
81
when in reverse or for are the master controller will…
release the pilot valve which means you need to have it set to prevent involuntary emergency breaking
82
how to use train line park break release
reverser in forward neutral or reverse green park breaks off button for 5 seconds (apply is same with red ‘on’ button)
83
door indicator lights switch (not button)
brightness of door indicator lights
84
LSM switch
protects the over head power from busting up
85
BVICS
brake valve isolating cock and switch allows driver to control braking functions of the train
86
EP brake circuit breaker
will de energise the lock out magnet valve and cause auto air brake to activate (simulates loss of overhead) this is what you use to drive on air
87
2. DC supply breaker
train lined- protects DC supply circuit (only one needs to be set for the train to move)
88
3. control circuit breaker
if this is tripped on the leading motor the train will fail, if tripped on a rear motor will cause blue flashing light
89
4. AUX control circuit breaker
protects a bunch or circuits bell auxiliary start door release / close (if doors are open and this trips the train will fail) saloon lights couple/ uncouple air con 1 local rheo schafenberg self centring
90
5. compressor governor circuit breaker
train line park breaks ON and OFF buttons are on this circuit and will not operate in this cab if tripped
91
local on or off park brake buttons on van wall do not need electricity to operate but
train line park brake needs 110vDC (local is for divide and attach)
92
door loop bypass switch
need permission before instigating no passengers allowed when this is isolated door light will remain flashing even when isolated
93
van area emergency clock
applies emergency brake
94
saloon area switches and circuit breakers
above the number three saloon door (in the carriage)
95
PLC programmable logic control
saloon door chimes saloon door secondary release function door open and close buttons in drivers cab door delay closing relay door loop bypass controls
96
8 things FDCL
doors fail to close isolate PLC open circuit in the train cable marker light in last cab wrong position coupler sensor defective aux tripped in the last control tripped in the last second BVICS open
97
when do you need a FWN
lateral sway fault air bag faults bogie faults doors isolate yellow techav
98
the speed must not exceed how many kms when skidding wheels
5 flagged will instruct 15km/h until inspected
99
bogie isolated speeds
80-100% (1 or 2) 10km off until 60 50-80% no pass extreme caution less than 50% disabled
100
how far do you go to protect a train?
500m or fixed signal radio keys flag DRA
101
panto faults include
damaged carbon strip arms heads main res air leaks end of overhead distanced wires isolate pneumatically electrically mechanically- motors out
102
theo brake faults
local fault light theo brake fault light only operates when the train is in motion so will need a second person to find the this car light while running

Comeg (13 decks)

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