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Metro Traineeship > General Fault Finding > Flashcards

General Fault Finding Flashcards

1
Q

What are the two types of faults? (not categories)

A
  • Persistent
  • Intermittent
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1
Q

What are the safety-critical faults that appear on the Fault Warning Notice book? (5)

(side note, it’s dumb we highlight/memorise this because in the field we would just look at the literal book)

A
  • Bogies Isolated
  • Airbag deflated
  • Lateral sway fault
  • Red EC/Yellow TECHAV isolated on a lead/trail motor
  • Doors isolated

(BALRD - as in, let me sing you the BALRD of Safety-Critical Faults that Appear on the FWN book)

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2
Q

Three indications of a defective whistle are:

A
  • Sounding continuously
  • Not sounding
  • Tone too low
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3
Q

How might a driver remedy a whistle sounding continuously or a whistle failing to sound?

A

Operate the whistle lever several times

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4
Q

If a whistle fails in service, what speed restrictions apply?

A

Reduced speed cautiously

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5
Q

If a whistle fails in service, what precautions must a driver take when approaching level crossings/persons near the line?

A

Alternate headlights between high and low, or use hazard lights if available

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6
Q

True or false:
When a whistle fails in service, a driver is required to pass level crossings with a speed restriction of 15km/h

A

False – it is reduced speed cautiously with use of high/low beams or hazard lights

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7
Q

If a whistle fails in service, what speed restriction is applied through yards, stations or near employees/track workers?

A

15km/h

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8
Q

How is a driver to operate if their whistle is a lower tone than normal?

A

Train will operate as normal, but a TMM must be submitted

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9
Q

Daylight hours:
If both headlights are defective but white marker lights are operational, what speed restrictions apply?

A

Maximum 50km/h through MURL and West Richmond tunnels

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10
Q

What restrictions must be adhered to in the hours of darkness if both headlights are defective? (5)

A
  • White marker lights must be operative
  • Advise train controller at Metrol
  • Nor exceed 50km/h between stations/crossing loops
  • Not exceed 15km/h through level crossings, stations or yards
  • Make frequent use of the whistle (particularly near pedestrian/level crossings)
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11
Q

What category of fault is both headlights defective during hours of darkness?

A

Critical (must be removed from service or re-marshalled if time permits)

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12
Q

What is the maximum speed of a train when skidding jammed/locked wheels to clear a section?

A

5km/h

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13
Q

If a train is skidded clear of an area, infrastructure personnel will attend and examine the track. What guidelines will the personnel put in place?

A

All following trains must be stopped, or travel at reduced speed, until the track is deemed to be safe.

(This questions is shonky but I couldn’t think of a better rewording)

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14
Q

If a train is skidded clear of an area and infrastructure personnel are NOT available, track force protection will attend. How will track force protection advise use of the track?

A

Train Controller will arrange for track force protection – flag signaller will instruct drivers to proceed cautiously not exceeding 15km/h until track is rectified fit for operational use

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15
Q

Isolated Bogies:
What percentage of bogies must be available for a train to remain in service?

A

50% of greater. If lower than 50% train is declared disabled.

16
Q

If number of isolated bogies equates to having between 50% to 80% of a train’s breaking power available, what speed restrictions apply?

A

Train must not exceed Extreme Caution

17
Q

What must a driver do if the FDCL continually flashes between platforms? (5)

A
  • Make PA requesting passengers stand clear of doors
  • View mirrors for passenger safety
  • Reduce speed
  • Advice train controller of situation
  • Stop train at next platform (regardless of conditions)
18
Q

What service restrictions apply if a train’s window is externally cracked?

A

Train may remain in service

19
Q

When a train has been combined in case of a fault, what speed restrictions apply if the train is powered and braked from the leading motor?

A

Reduced speed

20
Q

When a train has been combined in case of a fault, what speed restrictions apply if the train is powered from leading cab but braked from a trailing cab?

A

15km/h maximum

21
Q

When a train has been combined in case of a fault, what speed restrictions apply if the train is braked from leading cab but powered from a trailing cab?

A

40km/h maximum

22
Q

(from courseware)

Some defects that can occur to pantographs include but are not limited to: (7)

A
  • Worn/damaged carbon strips
  • Damaged panto heads
  • Damaged panto arms
  • main res leaks
  • electrical defects
  • end of overhead overruns
  • disarranged overhead wires
23
Q

(from courseware)
Damage that can occur to pantographs heads can include: (6)

A
  • Broken wires
  • Damaged/broken/missing carbon strips
  • damaged horns
  • twisted/bent/damaged frame
  • foreign object entaglements
  • excessive arcing
24
Q

If a driver observes defects in upcoming overheads, what must they do?

A

Use emergency brake to stop short of defect, and lower all pantographs if unable to stop in time

25
Q

What is the maximum time allowance required for pantographs to be lowered from the lead cab?

A

10 seconds

26
Q

After stopping their train, what is a driver’s responsibility to seeing disarranged overheads? (3)

A
  • Make emergency call to Metrol
  • Do not exit cab
  • Make PA announcement informing passengers of situation
27
Q

If a train lowers its pantographs to coast under a section of overhead, what type of breaking is available to all trains?

A

Friction breaking

28
Q

When coasting under a section of overhead, what must a driver do if a driver is only able to clear their leading pantograph under the obstruction?

A

Raise the lead pantograph only and pull the train through to the next platform.

29
Q

How are pantographs raised on a Comeng train?

A

Pneumatically, using main res air

30
Q

What kind of power is used to raise pantographs on a Siemens train?

A

Electric motor and battery power

31
Q

What kind of power is used to raise pantographs on an Xtrap train?

A

Electric motor and battery power

32
Q

What kind of power is used to raise pantographs on an HCMT train?

A

Electric signal and pneumatic power

33
Q

KT make flashcards from the Ask Yourself questions please

A

Metro Traineeship (32 decks)

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