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HCMT Faults > HCMT > Flashcards

HCMT Flashcards

1
Q

What Level alert requires immediate action from the driver?

A

Level One

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2
Q

Which Bypass switches when operated would cause the Safety System Bypass Fault Light to illuminate?

A

Traction Interlock

Zero Speed

Trip

Drivers Safety Device

… not get home or MR switch

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3
Q

How long do you have to acknowledge the Safety System button?

A

30 seconds

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4
Q

How long do you turn the switch to stable to ‘Hard Stable’?

A

7 seconds

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5
Q

What is the purpose of the Traction Interlock Bypass switch?

A

Allows you to obtain traction power if there is a fault on the door status loop

… door loop bypass …

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6
Q

Which Bypass would the driver operate in the event of a defective hand or foot pilot valve?

A

Driver Safety Device

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7
Q

The MR Pressure switch is to be operated when a HCMT is coupled to what train type?

A

Comeng

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8
Q

Trip Bypass switch must be operated if the Trip has been isolated?

A

True

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9
Q

In the event of a Pulse Width Module failure which bypass switch/button would the driver be required to operate?

A

Get Home Mode

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10
Q

Which of the following bypass switches would require a driver to detrain passengers?

A

MR Pressure Switch

Traction Interlock

Zero Speed

Trip

Driver Safety Device

…. not HCS, or get home

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11
Q

What are the main electrical faults that can occur on a HCMT?

A

CBs tripping

Traction Faults

Auxiliary Faults

… not MR faults

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12
Q

Which system monitors the status and position of CBs on a HCMT?

A

eTIS

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13
Q

What is the maximum number of times you can reset a CB?

A

Twice

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14
Q

Which CBs if tripped and can’t be reset will cause the train to be declared disabled?

Single point failure CBs

A

Brake Control Supply

Emergency Brake Loop Power Supply

Traction Control

Cab Activation

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15
Q

If a driver is presented with a Traction and/or Auxiliary Fault which button would the driver press to attempt to rectify?

A

TCU/ACU Reset

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16
Q

What is the most likely cause of the Traction and Auxiliary Power systems failing simultaneously

A

HSCB Tripped

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17
Q

Most electrical systems will self isolate if a fault is detected?

A

True

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18
Q

When on mainline what conditions must be met prior to performing a train stable for fault rectification?

A

Permission from TC

At a platform

Protection of home signals

Not near LVLX

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19
Q

What does a red door on pictogram indicate?

A

Door failed (defective)

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20
Q

What does a yellow door on pictogram indicate?

A

Isolated

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21
Q

How many times will a door attempt to close?

A

4

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22
Q

Which of the following door scenarios will prevent driver from being able to obtain traction?

A

Obstructed door

Trailing cab door open

External saloon DER

… not bulkhead door

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23
Q

If a bulkhead door cannot be closed the driver must operate the Traction Interlock Bypass?

A

False

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24
Q

How long is a DER in stage 1 for?

A

20 seconds

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25
Q

How long does the DER Inhibit work for?

A

120 seconds

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26
Q

What are the drivers duties when resetting a DER?

A

Check DER handle clear of obstruction

Remove obstruction if required

Return DER handle to upright position and close flap

Yes … all of the above

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27
Q

What are drivers duties when isolating a defective door?

A

Inset Tri-key into mechanical isolation port

Rotate key 90 degrees clockwise

Observe door indication lamp illuminated

Push saloon door open button to confirm door is manually locked

Apply door not in use stickers

… don’t operate traction interlock bypass

28
Q

If an external DER has been operated is traction still available?

A

No

29
Q

If an external DER has been pulled on the side of the train you can’t access do you request track access or wait until next platform where you can access it?

A

Wait until next platform when you can get to that side

30
Q

For how long do you need to press Cab EAD button?

A

10 seconds

31
Q

How long does EAD Inhibit work for?

A

5 minutes

32
Q

If you get a substandard beacon read any doors that are not identified as being on the platform will remain gray on the train pictogram and will be inhibited from opening?

A

True

33
Q

What is the ASDC override procedure

A

PA - short delay before doors released

SDU - observe cameras to ensure leading and rear cars aligned with platform

Door - open cab door on platform wide to confirm platform available, close cab door

Button - press appropriate side ASDC Override button on correct side and select which cars to release

Press door release for platform side

Report fault to Metrol

34
Q

Which IC should be used to pneumatically isolate a pantograph

A

Saloon IC - DMp car, A side, No. 1

35
Q

What are the drivers duties if presented with a brake disc over temperature warning

A

Operate at a low speed

Submit TMM

36
Q

Physical sign of brake faults include

A

Smoke

Unexpected retardation of train

Smell

Passenger report

37
Q

When safe to do so what are drivers duties when presented with dragging brake bogie car TMS Alert

A

Main Status Screen

MCH to COAST
MCH to Max Brake
MCH to COAST

Repeat fanning

Observe BC pressure below 20 to ensure brake has released

… don’t go to emergency, don’t declare train disabled

38
Q

If a sticking dragging brake does not release it must be isolated?

A

True

39
Q

If an individual bogie must be isolated which isolating cock would the driver operate?

A

Outside ICs - turn brake cylinder bogie IC.

 (brake cylinder ... not brake supply)….                                        ... Inside  IC - isolates both bogies
40
Q

There is no requirement to isolate park brakes when isolating the EP Friction brakes?

A

False

41
Q

What indications would a driver get if there was a leak or rupture of one or more air bags?

A

Air bags fault light

TMS Alert

42
Q

Where are air suspension isolating cocks located?

A

B2

43
Q

Maximum speed with deflated air suspension?

A

40kmh

44
Q

If a driver is required to isolate air suspension would you have to isolate bogie 1 and 2?

A

Yes

45
Q

If Status screen indicates large variance between MR pressure at lead vs trailing cab what does it indicate?

A

MR leak towards lower end

46
Q

If there is a MR failure on a TC car is the car unbraked?

A

Yes

47
Q

If there is a MR rupture on a Tc car which of the following equipment will be lost?

A

Trip

Emergency Brake

Holding Brake

Air Suspension

Horn

Driver and OJT seats

Sanders

… not pantographs or park brakes

48
Q

Where are MR through cocks located?

A

B side, 1&2 end of every car

49
Q

In the event of a MR fault on a Tc which of the following equipment must be isolated?

A

MR

Trip

Compressor

… no pantograph

50
Q

In the event of MR fault on a Dmp which of the following equipment must be isolated?

A

MR

Park Brake

… No trip, compressor

51
Q

In the event of a MR fault on a Dmp car may the pantograph remain raised?

A

Yes - due to auxiliary compressor

52
Q

In the event of MR failure on a Mp car which of the following equipment is lost?

A

Friction brakes

Park Brakes

Pantograph

Air suspension

Sanders

… no trip, compressors

53
Q

In the event of a MR failure on a DT car which of the following equipment would be lost?

A

Friction Brake

Park Brake

Air Suspension

Sanders

… no panto, compressor

54
Q

There is no electrical connection on the HCMT semi-automatic coupler

A

True

55
Q

Where is the transition coupler located?

A

Tc Car - A side

56
Q

Where is the Uncouple button located?

A

OJT Panel

57
Q

Is HCMT fitted with a continuous Brake Pipe?

A

No

58
Q

What are the functions of the Towing Unit?

A

Generates and interprets BP signal and EP demand during train rescue

Provides the means for the HCMT brake control to interface with other rolling stock via a traditional brake pipe

59
Q

Irrespective of recovery mode that the HCMT is in a drop in BP pressure below what value will initiate an emergency brake application?

A

300

60
Q

When conducting recovery procedures do we need to isolate the HCS equipment?

A

Yes

61
Q

What is position 2 on the recovery switch?

A

Pulling

62
Q

What is position 3 on the recovery switch?

A

Pulled

63
Q

When the recovery switch is operated the HCMT immediately matches the MR pressure of the attached train?

A

False - not immediately

64
Q

What brake must be used on a Comeng train during a non-electrical rescue?

A

Air Brake

65
Q

If both bogies isolated in Tc car is train disabled

A

Yes

66
Q

If external DER has been activated, closing doors will automatically reset.

A

Yes

HCMT Faults (4 decks)

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