Out Of Course (Part12)

Question 1

What constitutes as an extensive signal failure and what 2 methods of working through the affected areas?

Answer 1

Two or more consecutive malfunctioning signals

2 working methods are:

• Temporary Block Working (TBW)
  &
• Emergency Special Working (ESW)

Question 2

Describe the Temporary Block Working (TBW) method of work? (10)

Answer 2

1. Hand signaller will stand at the entrance signal to the TBW which will be kept at danger, holding a red flag and a detonator placed on the track
2. Driver will stop at hand signaller who will call the signaller requesting permission for the train to enter the block section
3. Hand signaller will relay relevant info and instructions to the driver with a completed RT3184 form
4. Driver tells the conductor what’s happening as they are entering a TBW section
5. Hand signaller removes detonator and holds up a yellow proceed at caution flag
6. Train passes through TBW section at a speed no more than 50mph
7. At the exit signal (first working signal), another hand signaller will be present with a red flag and a detonator on the line
8. Driver will hand over RT3184 form to hand signaller, the hand signaller will then contact will contact the signaller to ask permission for the train to exit the TBW section
9. Hand signaller will then remove detonator and show a yellow proceed at caution flag
10. Train will proceed and then the system will restart when the train passes 200m

Question 3

Describe the Emergency Special Working (ESW) method? (6)

Answer 3

1. Driver stops at the entrance signal which is the last working signal before the ESW section which will be at danger. Driver will contact signaller via GSM-R
2. Signaller relays instructions out to the driver and he fills out an NR3190 (ESW ticket)
3. Driver informs the conductor and enters the ESW section
4. Train passes through the ESW section and stops at the exit signal which will be at danger and may have additional signage (yellow board with EW and red line through it)
5. Driver then contacts the signaller for permission to leave the ESW section
6. Driver writes CANCELLED on there NR3190 and proceeds on there way

Question 4

What changes to emergency protection need to be remembered for TBW and ESW sections?

Answer 4

Detonators need to be placed on opposite tract as well as your own
1 1/4mile from obstruction

Question 5

Considerations for the conductor during single line working? (4)

Answer 5

1. Platforms on the opposite side to normal
2. Signals may not be visible
3. Delays may be likely
4. Station access may be affected