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Bletchley 3 > DT6 - 165 - Faults/Failures > Flashcards

DT6 - 165 - Faults/Failures Flashcards

1
Q

If the Cantrail light has illuminated on a specific coach what could that indicate?

A
  • PassCom pulled
  • Interlock lost
  • TCA fault
  • Fire System activated
  • Brake MCB tripped
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2
Q

If the PassCom light is flashing, what could that indicate?

A

With buzzer:
- PassCom pulled
- 2 keys

Without buzzer:
- Train Control MCB (any vehicle)
- Brake MCB (any vehicle)
- Couple button pressed in error

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3
Q

What is the general order of fault finding when you have an issue

A
  1. Look in front of you (cab desk)
  2. Look behind you (mcbs etc.)
  3. Look out the window (cant lights etc.)
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4
Q

Who must you inform if you have to isolate any of the safety systems on the train?

A
  • Signaller
  • Maintenance Supervisor / Person in Charge where appropriate
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5
Q

TRUE or FALSE: When you have a problem and are investigating how to resolve it you should ignore the customers and provide them with no information/updates

A

… FALSE

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6
Q

You’ve had an emergency brake application due to a fault, how would you tell it was caused by: AWS/TPWS

A
  • Cannot cancel
  • MCB tripped
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7
Q

You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: DSD/Vigilance

A
  • Cannot cancel DSD/Vigilance alarm
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8
Q

You’ve had an emergency brake application how would you tell it was caused by: PassCom Pulled

A
  • Pass Com light flashes
  • Pass Com buzzer
  • Cant light on affected vehicle
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9
Q

You’ve had an emergency brake application, how would you tell it was caused by: Egress pulled

A
  • Door interlock lost
  • Cantrail light on affected vehicle
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10
Q

You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Low Main Air Supply

A
  • General Fault Light Flashes (RED)
  • Parking Brake On (FIP RED)
  • Local FIP LIght (RED)
  • Less than 5.5 bar on main res. gauge
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11
Q

You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Door Control MCB Tripped

A
  • Door Interlock Lost
  • MCB Tripped
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12
Q

You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Tripcock Lever Operated

A
  • Tripcock light error light lit
  • All Systems Normal Light Out
  • Air leak below off side of cab
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13
Q

Where you can generally try to reset tripped MCBs 3 times, what are the two exceptions?

A
  • Earth
  • OTDR
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14
Q

If your train has been brought to a stop through an emergency brake application due to a fault with AWS, how would you resolve this?

A
  • Isolate AWS (this also isolates TPWS)
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15
Q

If your train has been brought to a stop through an emergency brake application due to a fault with TPWS, how would you resolve this?

A
  • Use Temp. Isolate TPWS switch on DA side
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16
Q

If your train has been brought to a stop through an emergency brake application due to a fault with DSD, how would you resolve this?

A
  • Isolate vigilance first;
  • Isolate DSD
    (wont be be able to isolate DSD first)
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17
Q

If your train has been brought to a stop through an emergency brake application due to a fault with Vigilance, how would you resolve this?

A
  • Isolate vigilance
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18
Q

If your train has been brought to a stop through an emergency brake application due to Pass Com being pulled, how would you resolve this?

A
  • Reset activated pass com (once stopped at appropriate place)
  • if it fails to reset, isolate PassCom
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19
Q

If your train has been brought to a stop through an emergency brake application due to Emergency Egress being pulled, how would you resolve this?

A
  • Reset activated egress handle
  • if it wont reset, isolate Traction Interlock
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20
Q

If your train has been brought to a stop through an emergency brake application due to low main air supply, how would you resolve this?

A
  • use compressor speed up
  • if unsuccessful, identify air leak and isolate the defective system
21
Q

If your train has been brought to a stop through an emergency brake application due to Brake MCB being tripped in a DMOS/L at the non-leading end, how would you resolve this?

A

If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- Isolate EBS, and Pass Com in your driving cab

22
Q

If your train has been brought to a stop through an emergency brake application due to a fault with Brake MCB being tripped in a DMOS/L at the leading end, how would you resolve this?

A

If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- unable to drive from this cab, will need to use rearmost cab as leading end
- isolate EBS and Pass com in this cab

23
Q

If your train has been brought to a stop through an emergency brake application due to a fault with Brake MCB being tripped in a MOS, how would you resolve this?

A

If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- isolate the Pass com in the driving cab

24
Q

If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a DMOS/L at the non-leading end, how would you resolve this?

A

If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- Isolate EBS, Traction Interlock and Pass com in your driving cab

25
Q

If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a DMOS/L at the leading end, how would you resolve this?

A

If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- unable to drive from this cab, will need to use rearmost cab as leading end
- Isolate EBS, Traction Interlock and Pass com in your driving cab

26
Q

If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a MOS, how would you resolve this?

A

If you cannot reset:
- isolate Traction Interlock in the driving cab

27
Q

If your train has been brought to a stop through an emergency brake application due to Door Control MCB tripped, how would you resolve this?

A

If you cannot reset:
- Isolate Traction Interlock in the driving cab

28
Q

If your train has been brought to a stop through an emergency brake application due to Tripcock Lever Operated, how would you resolve this?

A
  • Reset by pressing uncouple button
  • If unable to reset, brake glass bar and isolate tripcock
29
Q

Indications: General Fault light lit, Cantrail Light rear coach

A

TCA tripped in rear coach

30
Q

Stopped in a station, doors released
Indications: middle coach doors not operating, Passcom pulled

A

Door Supply, middle coach

31
Q

Indications: Interlock lost, tripcock light lit, emergency brake application, flashing passcom no buzzer, GSMR dead, PIS in slave mode

A

Train Control, leading cab.

32
Q

Indications: loss of power

A

Local Control in a coach

33
Q

Indications:
- emergency brake application
- general fault light flashing
- passcom flashing no buzzer
- contrail light, rear coach

A

Brake MCB rear coach

34
Q

Indications:
- interlock lost
- emergency brake application
- cantrail light, middle coach

A

Emergency egress, middle coach

35
Q

Indications:
- interlock lost
- emergency brake application

A
  • Door control somewhere or
  • train control on MOS
36
Q

Indications:
- emergency brake application
- tripcock light lit
- parking brake light lit
- passcom flashing no buzzer
- cantrail light, leading coach

A

Brake MCB leading coach

37
Q

Indications:
- passcom flashing with buzzer
- cantrail leading coach

A

Passcom pulled, leading coach

38
Q

Indications:
- passcom flashing with buzzer on startup

A

Two keys in train

39
Q

Indications:
- emergency brake application
- possibly general fault light lit
- passcom flashing no buzzer
- cantrail middle coach

A

Brake MCB, middle coach

40
Q

Indications:
- fire alarm
- cantrail light middle coach

A

Engine fire on middle coach

41
Q

Indications:
none

A

Door supply

42
Q

Indications:
- interlock lost
- possibly general fault light lit
- passcom flashing no buzzer
- coupling light yellow
- emergency brake application

A

Coupler button pressed in error

43
Q

Indications:
- interlock lost
- tripcock lit
- possibly general fault light lit

A

Train control in MOS

44
Q

What isolations do you need to do if the Brake MCB has tripped and won’t reset

A

In DMOSL/DMOS:
- Air: PBBC + BCIC
- Electric: Passcom + EBS

In MOS:
- Air: PBBC + BCIC
- Cab: Passcom

45
Q

What isolations do you need to do if the Train Control MCB has tripped and won’t reset

A

In DMOS/DMOSL:
- Air: PBBC + BCIC
- Cab: EBS + Traction Interlock + Passcom

In MOS:
- Cab: Traction Interlock

Need to check all doors before any movement.

46
Q

Where are the MCBs on a MOS?

A

Hinged cupboard at the North end

47
Q

Where are the Parking Brake ICs on a MOS?

A

On the North End, DA side under the Sol Bar

48
Q
A

Bletchley 3 (8 decks)

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