DOTE (360)

Question 1

What faults can a 360 enter service with?

Answer 1

• AC Earth faults
• Windscreen damaged (not obscuring vision)
• PIS defective (manual PAs to be made)
• Defective Couplers (mechanical and/or electrical)
• Dynamic Brake defective
• HVAC (dependant on weather and passenger comfort)
• Driving cab door defective (Egress is operational)
• Single TCU (traction container) failure

Question 2

Conditions and speeds attached to ATP isolated?

Answer 2

[High risk - Detrain at next station]
- If TPWS is operational, you can run line speed but cannot run west of Hayes and Harlington

• If both ATP and TPWS isolated- 40mph max- or line speed with competent person (40mph in poor visibility)
• If ATP is isolated within Heathrow Tunnel- must not exceed 5mph from the entrance of each platform

Question 3

Conditions and speeds attached to Isolated Brakes?

Answer 3

[1 Vehicle in 5, or 2 in 10]
- If isolated on an intermediate vehicle (TOS/PTOS)- 20% below line speed

• if isolated on any DMOS vehicle- 5mph max

Question 4

Conditions and Speeds attached to any external doors not being able to close?

Answer 4

• Move passengers away from the affected vehicle- competent person to guard door
• Get adjacent line blocked
• must not exceed 20mph

Question 5

Conditions and speeds attached to DSD isolated?

Answer 5

• Detrain at next suitable Category A station

- 40mph max, or line speed with competent person

Question 6

Conditions and Speeds attached if both headlamps defective?

Answer 6

• with authority of TVSC you could run at a reduced speed of 20mph with marker lights
• if portable headlamp is provided at the next terminal station- 75mph

Question 7

Conditions and Speeds attached with defective tail lamps?

Answer 7

• 1 lamp defective- no action required
• 2 lamps defective- portable tail lamp must be provided
• no portable tail lamp- out of service

Question 8

Actions if TMS becomes defective?

Answer 8

• Detrain at next suitable Category A station

Question 9

Conditions and Speeds attached to defective secondary suspension (air bags)?

Answer 9

• Detrain at next available or suitable category A station dependent on guidance from technicians
• 30mph max

Question 10

Conditions and Speeds attached to defective primary suspension (springs)

Answer 10

• Detrain at next available or suitable category A station dependent on guidance from technicians

(no speed attached)

Question 11

Conditions and Speeds attached to a defective warning horn?

Answer 11

• If one tone is working you could possibly remain in service
• if both tones not working- detrain at the next station- 20mph max

Question 12

Conditions attached if WSP is isolated on intermediate vehicles (TOS/PTOS)?

Answer 12

• possibly remain in service or detrain at the next station dependent on environmental or low adhesion conditions

Question 13

Conditions and speeds if WSP is isolated on DMOS vehicles?

Answer 13

• Detrain at the next station

- brakes will need to be isolated on the affected vehicle