15X Traction Flashcards
What is the maximum speed of a GWR 15X unit, including mixed formations in multiple?
75mph mixed 150/158
90 if only 158
What is the maximum number of vehicles that can be coupled to form a train , formed of 15X units?
12 units/vehicles
What emergency equipment can be found on a 15X unit. Where can it be found?
Universal toilet (LCRASH1)
L - Ladder
C - Crowbar
R - Rope
A - Axe
S - Saw
H - Hammer
1 - 1st aid box
Fire extinguishers - cab and saloons
Glow sticks - internal doors saloon
Where are the passcomms located on a class 15X?
In saloon
Toilet Universal
Vestibule doors
What are the indications in the driving cab of a passcomm having been operated?
Brake demand
What external indication will identify the vehicle where the passcomm has been operated?
Cantlight (BIL) lit on affected vehicle
How do you reset the passcomm?
By inserting a T key
Where are the CALL FOR AID devices on a class 15X?
Universal toilet
At disabled seating area
What are the indications to the driver of a call for aid device having been operated?
Talk back request on train (APIS)
How is a call for aid device activation reset?
Correctly replace the handset into the cradle
What could cause a body side indicator/can’t tail light to illuminate?
Fire activation
Egress pulled
TIS tripped
Doors open
Passcomm activated
Local doors open
TCA failure
Shore supply attached (158)
What are the effects of an emergency egress being operated at a passenger door?
Brake demand
Hussel alarm sounding
Doors release (not fully open)
After 20 seconds - doors fully open
If an egress has been operated what are your immediate actions on becoming aware?
Stop and secure train
Emergency call to signaler (emergency switch off electric if needed)
Confirm if anyone has fallen from the train
Recontact signaler and provide update
What would the sound of a loud bell indicate in the drivers cab?
A fire alarm
When you hear the fire alarm what are your actions?
Stop train in suitable location
Emergency call to signaler - lines blocked and electrical switch off
Check outside (bil/can’t) light lit on vehicle
Activate fire bottles if not already activated (automatic)
What train-borne equipment is fitted for use in a fire scenario? Explain the automatic and manual system.
Fire bottles activate at 3mph (auto)
If bottle do not automatically activate,
Use manual pull cord.
Ensue you take up the slack cord then pull firmly.
If still not out - use portable fire extinguisher 🧯
What could be indicated by the driver-guard buzzer sounding continuously?
DKS active
(Two keys in drivers desks)
If a train fault light we’re to illuminate on moving the DDS from N to F, what initial action should the driver take?
Move the selector from N to F to R - at least 6 times to try and clear the fault.
The train fault light is still lit after moving the drive selector from F to N to R - over six times what action may you need to take?
Possible gearbox/transmission fault
Check light (drivers cab and internal MOS ) to confirm which vehicle
Isolate gearbox, switch off engine
Restart engine to see if fault clears
How can you access a vehicle if there is NO res air supply?
Find Bowden cable
Pull cable to release doors
Push doors apart
Ensure you reset Bowden cable and close cover plate
How is a defective door locked out of use?
Insert a T key into upper area and turn once to expel air. Turn again to lock door.
Door not in use will illuminate
Ground level lights will extinguish
With specific reference to a class 15x, how should the driver respond to experiencing wheel slip (when taking power)
Describe the indications received and explain the operation of the relevant on-train equipment.
Reduce power notches - less power
Use sand if necessary
Allow wheels to gain traction over time before increasing power
(Train light) will illuminate
Engine revs will drop
If unit light illuminates then report to signaller
When driving a 15X how should the driver respond to wheel-slide when braking?
What indications will the driver receive and the relevant on-train equipment?
Increase braking (auto sanding)
Puffing sound where air is expelled
Speedometer fluctuation
If needed full emergency brake
Give 5 causes of an engine or engines failing to start, or an engine or engines stopping, and for each the indicate initial checks that could be made to determine if it is the cause?
Low fuel
Low engine oil
Shore supply still attached
Low coolant level
Coolant overheating (engines switch off or idle)
Faulty engine button
If the auxiliary batteries on the rear vehicle of a class, 15X train are not being charged, what will be the eventual outcome?
What actions are then required?
Loss of rear tail lights
Use remote switch to take part from another vehicle.
Move passengers to another vehicle with a full lighting
Give five causes of an unsolicited brake application or of been unable to release the brakes?
TPWS brake demand
Egress pulled
Passcomm activated
Brake control MCB tripped
Low air pressure
Division
In the event of an unsolicited brake demand, what must be the first check the driver makes?
Check the TPWS panel
The check of this panel is due to timing. The panel lights will extinguish through time.
If still unable to release the brakes after fault finding, how can you brake demand be overridden?
Activate the EBS - when authorised
If the EBS has been activated what controls/equipment will no longer function to stop the train?
Passcomm
Emergency plunger
You are driving a 4-car 150/2 train and you notice the following:
Unit and train lights lit
Sluggish performance
Possible smoke from area around the bogie on lead vehicle
Bodyside indicator light NOT lit.
Dragging brake
If you have identified a dragging brake what must your actions be?
Stop train
Contact signaller
Cut and run policy
How could you ultimately resolve a dragging brake?
Isolate the brake using the BCIC (sealed) with authority
You have identified the dragging brake but no assisting train is available to proceed. What rule applies if you have a rigid bar coupler?
The 1 in 5 rule
Train can proceed, reduced speed, to 1st suitable location where passengers must be removed.
