Safeworking - Adverse Weather Risks Flashcards

1
Q

What weather conditions can affect the safe operation of the railway?

A
  • Low temperature
  • Storms and Wind
  • High temperature
  • Fog
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2
Q

What damage and disruption can be caused to trains and rail infrastructure during weather events?

A
  • Obstruction on the tracks
  • Water over the rail
  • Obstruction in the Overhead and Fouling tracks
  • Broken rail
  • Buckled rail
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3
Q

What can COLD WEATHER CONDITIONS cause?

A
  • Broken rails
  • Low adhesion when braking and powering
  • Excessive arcing from the Pantograph
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4
Q

What can HOT WEATHER CONDITIONS cause?

A
  • Buckled rails
  • Damaged or Sagging Overhead wires
  • Trackside fires
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5
Q

Who are BUCKLED RAILS reported to?

A

Train Control

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6
Q

What can THUNDERSTORMS AND STRONG WINDS cause?

A
  • Bring down trees
  • Create flash flooding
  • Lose Overhead power
  • Entangled debris in Overhead wires
  • Reduced Visibility
  • Affect Signalling systems
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7
Q

Can you operate trains through flood water?

A

No

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8
Q

What can drivers do to mitigate the risk of fog?

A
  • Reduce the speed of the train
  • Approach signals with caution and assume the signal is at stop if it can’t be seen
  • Make frequent use of the whistle
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9
Q

What are some things drivers can do to reduce the risk of damage and mistakes during weather events?

A
  • Reduce speed
  • Use high beam lights (except in fog)
  • Be vigilant to changes of conditions
  • Use the whistle frequently
  • Approach fixed signals
  • Monitor train performance and driving style
  • Don’t drive through heavy smoke
  • Adhere to any speed restrictions implemented
  • Be prepared to stop short of any obstructions
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10
Q

Who must BROKEN RAILS be reported to?

A

Train Control

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11
Q

What are tell-take signs of a broken rail?

A
  • A thud or twang sound
  • Rough ride due to misaligned rails
  • Obvious gaps between the rail that can be viewed
  • A break or gap that can be felt as the train passes
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12
Q

Who inspects broken rails?

A

Track Maintenance Representative

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13
Q

What can be implemented when the is a broken rail?

A

CAN notices

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14
Q

If the TRACK MAINTENANCE REPRESENTATIVE deems it safe to pass a section with WATER OVER THE RAIL HEAD, what is the maximum speed?

A

5km/h

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15
Q

If the TRACK MAINTENANCE REPRESENTATIVE deems it unsafe to pass a section with WATER OVER THE RAIL HEAD, what is the reason?

A
  • The water level is above the rail head 75mm
  • The water is FLOWING which may cause the ballast to be dislodged
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16
Q

If a section has WATER BELOW THE RAIL HEAD, what is the maximum speed?

A

15km/h