DT6 - 165 - Faults/Failures Flashcards
If the Cantrail light has illuminated on a specific coach what could that indicate?
- PassCom pulled
- Interlock lost
- TCA fault
- Fire System activated
- Brake MCB tripped
If the PassCom light is flashing, what could that indicate?
With buzzer:
- PassCom pulled
- 2 keys
Without buzzer:
- Train Control MCB (any vehicle)
- Brake MCB (any vehicle)
- Couple button pressed in error
What is the general order of fault finding when you have an issue
- Look in front of you (cab desk)
- Look behind you (mcbs etc.)
- Look out the window (cant lights etc.)
Who must you inform if you have to isolate any of the safety systems on the train?
- Signaller
- Maintenance Supervisor / Person in Charge where appropriate
TRUE or FALSE: When you have a problem and are investigating how to resolve it you should ignore the customers and provide them with no information/updates
… FALSE
You’ve had an emergency brake application due to a fault, how would you tell it was caused by: AWS/TPWS
- Cannot cancel
- MCB tripped
You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: DSD/Vigilance
- Cannot cancel DSD/Vigilance alarm
You’ve had an emergency brake application how would you tell it was caused by: PassCom Pulled
- Pass Com light flashes
- Pass Com buzzer
- Cant light on affected vehicle
You’ve had an emergency brake application, how would you tell it was caused by: Egress pulled
- Door interlock lost
- Cantrail light on affected vehicle
You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Low Main Air Supply
- General Fault Light Flashes (RED)
- Parking Brake On (FIP RED)
- Local FIP LIght (RED)
- Less than 5.5 bar on main res. gauge
You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Door Control MCB Tripped
- Door Interlock Lost
- MCB Tripped
You’ve had an emergency brake application do you to a fault, how would you tell it was caused by: Tripcock Lever Operated
- Tripcock light error light lit
- All Systems Normal Light Out
- Air leak below off side of cab
Where you can generally try to reset tripped MCBs 3 times, what are the two exceptions?
- Earth
- OTDR
If your train has been brought to a stop through an emergency brake application due to a fault with AWS, how would you resolve this?
- Isolate AWS (this also isolates TPWS)
If your train has been brought to a stop through an emergency brake application due to a fault with TPWS, how would you resolve this?
- Use Temp. Isolate TPWS switch on DA side
If your train has been brought to a stop through an emergency brake application due to a fault with DSD, how would you resolve this?
- Isolate vigilance first;
- Isolate DSD
(wont be be able to isolate DSD first)
If your train has been brought to a stop through an emergency brake application due to a fault with Vigilance, how would you resolve this?
- Isolate vigilance
If your train has been brought to a stop through an emergency brake application due to Pass Com being pulled, how would you resolve this?
- Reset activated pass com (once stopped at appropriate place)
- if it fails to reset, isolate PassCom
If your train has been brought to a stop through an emergency brake application due to Emergency Egress being pulled, how would you resolve this?
- Reset activated egress handle
- if it wont reset, isolate Traction Interlock
If your train has been brought to a stop through an emergency brake application due to low main air supply, how would you resolve this?
- use compressor speed up
- if unsuccessful, identify air leak and isolate the defective system
If your train has been brought to a stop through an emergency brake application due to Brake MCB being tripped in a DMOS/L at the non-leading end, how would you resolve this?
If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- Isolate EBS, and Pass Com in your driving cab
If your train has been brought to a stop through an emergency brake application due to a fault with Brake MCB being tripped in a DMOS/L at the leading end, how would you resolve this?
If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- unable to drive from this cab, will need to use rearmost cab as leading end
- isolate EBS and Pass com in this cab
If your train has been brought to a stop through an emergency brake application due to a fault with Brake MCB being tripped in a MOS, how would you resolve this?
If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- isolate the Pass com in the driving cab
If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a DMOS/L at the non-leading end, how would you resolve this?
If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- Isolate EBS, Traction Interlock and Pass com in your driving cab
If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a DMOS/L at the leading end, how would you resolve this?
If you cannot reset:
- use PBBC and BCIC on the affected vehicle
- unable to drive from this cab, will need to use rearmost cab as leading end
- Isolate EBS, Traction Interlock and Pass com in your driving cab
If your train has been brought to a stop through an emergency brake application due to Train Control MCB being tripped in a MOS, how would you resolve this?
If you cannot reset:
- isolate Traction Interlock in the driving cab
If your train has been brought to a stop through an emergency brake application due to Door Control MCB tripped, how would you resolve this?
If you cannot reset:
- Isolate Traction Interlock in the driving cab
If your train has been brought to a stop through an emergency brake application due to Tripcock Lever Operated, how would you resolve this?
- Reset by pressing uncouple button
- If unable to reset, brake glass bar and isolate tripcock
Indications: General Fault light lit, Cantrail Light rear coach
TCA tripped in rear coach
Stopped in a station, doors released
Indications: middle coach doors not operating, Passcom pulled
Door Supply, middle coach
Indications: Interlock lost, tripcock light lit, emergency brake application, flashing passcom no buzzer, GSMR dead, PIS in slave mode
Train Control, leading cab.
Indications: loss of power
Local Control in a coach
Indications:
- emergency brake application
- general fault light flashing
- passcom flashing no buzzer
- contrail light, rear coach
Brake MCB rear coach
Indications:
- interlock lost
- emergency brake application
- cantrail light, middle coach
Emergency egress, middle coach
Indications:
- interlock lost
- emergency brake application
- Door control somewhere or
- train control on MOS
Indications:
- emergency brake application
- tripcock light lit
- parking brake light lit
- passcom flashing no buzzer
- cantrail light, leading coach
Brake MCB leading coach
Indications:
- passcom flashing with buzzer
- cantrail leading coach
Passcom pulled, leading coach
Indications:
- passcom flashing with buzzer on startup
Two keys in train
Indications:
- emergency brake application
- possibly general fault light lit
- passcom flashing no buzzer
- cantrail middle coach
Brake MCB, middle coach
Indications:
- fire alarm
- cantrail light middle coach
Engine fire on middle coach
Indications:
none
Door supply
Indications:
- interlock lost
- possibly general fault light lit
- passcom flashing no buzzer
- coupling light yellow
- emergency brake application
Coupler button pressed in error
Indications:
- interlock lost
- tripcock lit
- possibly general fault light lit
Train control in MOS
What isolations do you need to do if the Brake MCB has tripped and won’t reset
In DMOSL/DMOS:
- Air: PBBC + BCIC
- Electric: Passcom + EBS
In MOS:
- Air: PBBC + BCIC
- Cab: Passcom
What isolations do you need to do if the Train Control MCB has tripped and won’t reset
In DMOS/DMOSL:
- Air: PBBC + BCIC
- Cab: EBS + Traction Interlock + Passcom
In MOS:
- Cab: Traction Interlock
Need to check all doors before any movement.
Where are the MCBs on a MOS?
Hinged cupboard at the North end
Where are the Parking Brake ICs on a MOS?
On the North End, DA side under the Sol Bar