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MT Trainee > Comeng Formative Gaps > Flashcards

Comeng Formative Gaps Flashcards

1
Q

What us introduced on the secondary circuit?

A

FPV
Control governor bypass button
Emergency pilot valve
Emergency control governor

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2
Q

What 4 things cause low pressure flag to rise

A

MR below 500
Lockout magnet valve deenergised
Loss of OH
BVIC

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3
Q

What 4 things does BVIC control flow of air to?

A

MR to air brake valves and BP
Electricity to:
- EP and Rheo switches
- LP flag and LOMV
- Door circuit

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4
Q

Purpose of auxiliary res (2)

A

Charged with BP pressure
Supplies brake cylinders with air

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5
Q

What limitation does westcode braking system have when using air brake

A

Depleted aux res after several applications resulting in reduced brake efficiency

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6
Q

What braking system has wheel slide protection during air braking

A

Knorr

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7
Q

Triple valve 3 main jobs

A

CHARGES aux res
APPLIES aux res air to brake cylinders
RELEASES brake cylinders to atmosphere

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8
Q

PEI time-out time

A

90 seconds

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9
Q

Anti neutralisation speed

A

8km

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10
Q

Release SPB knorr

A

1 turn

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11
Q

Release SPB wedtcode

A

6-8 turns

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12
Q

Apply SPB knorr

A

You cant

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13
Q

Westcode SPB apply

A

40-60 turns

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14
Q

Brake pipe continuity test pressures and timings

A

15 seconds - below 300
40 seconds - recoved to 425

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15
Q

FDCL causes

A

Second BVICS
Aux cb
Control cb
Rear marker lights
Door obstruction

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16
Q

Control gov open and close pressures

A

Open - 310 to 340
Close - 400 to 430

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17
Q

Trip test - what dies BP need to reduce to?

A

150

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18
Q

When air braking what valve provides a 10% increase to brake cylindars

A

Restricted application limiting valve and ball and check valve

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19
Q

What dies equalising res do

A

Allows BP to charge

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20
Q

What does control res do (2)

A

Supplies air to main equipment case for power and braking
Supplies air to trip latching lever

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21
Q

What does compressor governor do

A

Monitors MR

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22
Q

What’s the main component in aux equip case

A

MA

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23
Q

What does line breaker case do

A

Send 1500v to traction motors

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24
Q

What does main switch do

A

Stops 1500 to line breakers and traction motors

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25
Q

4 extra reservoirs on a knorr

A

APES
Aux res
Pre control.
EP res
Supplementary res

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26
Q

Local fault light

A

Traction / rheo overload

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27
Q

Line switch fault light

A

Power to traction motors or line breaker faults

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28
Q

What CB is attached to the train lined spring park brake

A

Compressor Gov CB

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29
Q

6 van area cocks and what they do

A
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30
Q

What is attached to the PLC CB

A

SHUT DA FUCKING FUCKING DOOR DOOR DOOR DOOR CUNT
Secondary PV
Door loop bypass
FPV
FDCL relay
Door delay closing relay
Door open close buttons
Door secondary release
Door chimes
Control gov bypass light and button

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31
Q

If PLC CB trips what indication will we have

A

FDCL

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32
Q

What does regulating valve do (2)

A

Works with relay valve to duplicate Eq res pressure in the brake pipe
Maintains BP at 550 when EP braking

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33
Q

What is relay valve

A

Controls flow in and out of BP

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34
Q

What is charge valve

A

Allows MR to flow to relay valve

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35
Q

What is variable load valve

A

Works with air suspension, adjusts braking depending on load

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36
Q

What allows 10% extra brake cyls when air braking

A

Restricted application limiting valve and ball and chrck valve

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37
Q

What is restricted application magnet valve

A

Prevents air and ep working together

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38
Q

What prevents sticking brakes

A

Dump valve

39
Q

What valve om brake unit is used to provide a passage through the triple valve when EP braking

A

Bypass check valve

40
Q

Explains full cab

A

Secure train (apply and iso emy brakes)
Secure cab (TD in portable, call TC, PA, lock everything up)

41
Q

FDCL causes (8)

A

Door faults
Control cb in rear
Rear tail lights off
PLC cb
Coupler sensing still coupled
Aux cb in rear
Train cable open circuit (loss 110v)
Second bvics

42
Q

What’s being tested on EP brake test

A

ABC wires
35kpa increment increases to b.cyls with step 1 and 2 being the same

43
Q

What’s being tested on air brake test (functionality)

A

-Simulate loss of OH when de-energising LOMV
-When in brake zone, your reg, relay and eq res are working to reduce BP and increase b.cyl
-EMY position tests exhaust valve and closing or charging valve
-RR position tests closing of emy exhaust valve and charge valve open

44
Q

HFPV and cont gov testing

A

Testing emy application valve
Testing cont gov opens and closes

45
Q

Trip test testing

A

BP exhausted through trip valve
BP won’t go below 0 as charging valve still open
Ensuring trip only resets in emy

46
Q

On a continuity test if BP doesn’t charge to 425 in 40 seconds what could be cause

A

Blockage

47
Q

What’s being tested on panto test (3)

A

Short circuits in control cb
LOMV deegergises
Emy pressure in b.cyls

48
Q

Detail the ROBBDS test

A
49
Q

2 indications I have 110v

A

Bell
LP flag down

50
Q

5 causes of traction faults

A

Control res
Air leaks
Traction overloads
1500v failure
CB fail

51
Q

Isolating traction faults procedure

A

MC - off
Controller key in motors switch hole
Choose position
Press OVERLOAD button
Waiting for line switch to extinguish, but may stay illuminated.

Continue to change switch positions to locate faulty motors if required.

52
Q

What is om the control cb

A

MR BOPC
Master controller
Reverser
Brake (rheo)
Overload (traction reset)
Panto raise and lower
Control gov

53
Q

What is on the aux cb

A

BADSCARS
Bell
Aux start
Door control
Saloon lights
Couple uncouple
Air con 1
Local rheo
Schafenberg self centre

54
Q

How to isolate panto (6)

A

Panto lower valve
Inspect
Iso panto ep cock
Iso panto toggle switch
Traction motors all out
Tmm

55
Q

1 MA fails indication (4)

A

1/2 saloon lighting
1/2 air-conditioning
1/2 cab lighting
Local rheo innop (no cooling fan)

56
Q

What is on MR system (10)

A

Doors
Pantos
MA
Air suspension
BP charge
Comp gov
EP
Control res
SPB
Whistle

57
Q

Loss of MR pressure steps (4)

A

Straight into emergency
Check derailed
Wait for MR to rise - if it doesn’t go and find leak
Attempt recharge BP as could be BP instead that’s leaking

If MR doesn’t recover - find leak

58
Q

MR tank rupture steps (3)

A

MR delivery cocks
Compressor contractor switch OFF
Comp gov CB

59
Q

If you have MR pipe rupture what are your 3 goldern rules

A

DLBP
Iso vicers
Detrain passengers

60
Q

MR pipe rupture in lead - 7 things to iso

A

Close end cocks
Lower and iso pantos
Isolate comp gov
Trip EP (emy brake only)
Manually release SPB
Iso motors/rheo
DLBP

61
Q

MR ruptured in lead is CE needed?

A

Yes to charge BP

62
Q

MR ruptured in lead what have you lost (5)

A

Doors whistle airbag MA control res

63
Q

MR ruptured in lead speed

A

15

64
Q

Mr ruptured in any other motor car, what’s an additional thing that needs isolating

A

Yellow techav (iso trip)

65
Q

Mr ruptured in any other motor car, what’s an additional thing that needs isolating

A

Yellow techav (iso trip)

66
Q

MR ruptured any other motor car speed

A

Max 30 (no airbags)

67
Q

MR ruptured in trailer car - isolated equipment (3)

A

Trip EP
Close end cocks
DLBP

68
Q

If BP doesn’t recharge what do we reset and if that doesn’t work what do we turn

A

vicers
Red EC

69
Q

How to locate to a BP leak

A

Isolate end cocks
Check Local SPB in both centres
Enter trailing centre
Open BVICS
Leave in S7
If BP does not charge its in that consist

70
Q

3 goldern rules with BP pipe rupture

A

Drive from longest portion BP
15km Max speed
If burst in LM or TM always a comp emp to apply SPB in case of brakeaway

71
Q

BP leak in cars 1 2 3 isolate (3)

A

BP end cocks
Release brakes via hand release wire
Trip Ep from droving cab (longest portion BP)

72
Q

BP leak 1 2 3 where is CE?

A

In lead to observe track and operate SPB

73
Q

BP leak cars 4 or 5 isolate COMP EMP AVAILABLE (3)

A

Bo end cocks
Hand release wire
Trip EP

74
Q

BP leak cars 4 or 5 where is driver where is comp emp?

A

Driver in lead
Comp emp in rear charging BP, operating van cockif needed and using SPB in breakaway

75
Q

BP leak car 4 or 5 extra 2 steps

A

Isolate MR to 7 step on leaky car
Open bvic in trailing and place handle to r and r

76
Q

BP leak car 6 isolate and where is comp emp

A

BP end cocks
Hand release wire
Trip EP
CE in rear to apply SPB in case of breakaway.

77
Q

BP fails to charge steps (charge valve issue) (6)

A

Mr to brake controller cock - close
Trip EP
Fan brake RR -> EMY
(This will help free valve)
Ensure SPB applied
Open MR to BC cock
RR

78
Q

First thing ti check if BP fails to charge (charge valve issue)

A

Mr to brake controller cock

79
Q

If freeing charging valve steps don’t work what can we do next (5)

A

Set EP CB
S7 leave BVIC open
Ensure SPB
Open second BVICS
Apply and isolate

80
Q

LOMV defect in closed position

A

No air
Run on EP (15km speed detrain and shunt)

81
Q

LOMV defect open positio

A

Super brake (all 3)
Run on air

82
Q

How to determine if regulating valve defect

A

Charge BP
Close BVIC
if BP drops - BP leak
If BP does not fall
- EMY
- open bvics
- release brake
If BP only rises to previously low pressure then regulating valve issue

83
Q

If brake controller moving to a more release position - what do we do (1)

A

Run on air

84
Q

Sticking brakes rectification IN RUNNING (3)

A

Check pressures
Ensure no charge valve air heard
Trip EP -> full service back to RR

85
Q

Sticking brakes WHILE STATIONARY (2)

A

Check Pressures
Fan EP brake

86
Q

Pressure - BP full service reduction

A

380-410

87
Q

Number these

A

1 Restricted application magnet valve
2 dump valve
3 release ensuring valve
4 bypass check valve
5 triple valve
6 restricted application limiting and ball and check valve
7 hand release wire
8 variable load valve
9 7 step relay

88
Q

Prior to manually applying SPB (westcode) What 2 things should you ensure

A

Van area park brake button ON
OR
SPB isolating cock turned

89
Q

FDCL locating procedure (in running)

A

PA - stand clear of doors
Stop at plat - door sequence
If not rectified close doors
FCA, TEC call, take stickers and PR
Walk to Centre, listen for door chimes
Press door open close again
Get to trailing centre and look for
- markers in auto
- control CB
- open BVICS
- check door light

If doesn’t steady then locate door and isolate and add stickers

90
Q

LSM needs to be off when (4)

A

Panto won’t raise or stay raised
MA won’t start
Panto lower for no reason
EP CB keeps tripping

91
Q

BP leak in car 4 or 5 no comp emp (6)

A

Iso end cocks
Hand release wire
Iso MR to 7 step
Open BVIC on trailing M and handle to RR
Power and brake from lead on EP
BONUS - iso vicers

92
Q

During divide - coupler doors not closing. How to move the train (3)

A

Lower pantos
Close BP and MR end cocks
Raise pantos and move

93
Q

Divide - coupler doors not closing - how to close

A

Need 2 drivers
Apply and isolate and park brake on
MR and BP cocks open
Press switch stick in BP sensor
Second driver press uncouple buttons

94
Q

How to turn off auto announcementd

A

Mode
Disable audio

MT Trainee (53 decks)

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