HCMT Faults Flashcards
Which level of alert required immediate attention?
Level 1
Which BPS causes the safety system fault light to illuminate? (4)
• Traction Interlock
• Zero Speed
• Trip
• Driver Safety Device
What brake must be used on a Comeng on non-electrical rescue with another train?
Air brake
When safety system acknowledge button is active, in what intervals must it be pressed to avoid emy brake application?
30s
When performing a ‘Hard stable’ how long does a driver hold the start up button for?
7 seconds
What is the purpose of the traction interlock BPS?
To obtain traction power if there is a fault on the door status loop circuit
What BPS does a driver use with a fault with the hand and foot pilot valve?
Driver safety device
MR pressure switch is used when coupled to which EMU?
Comeng
True or False
The trip bypass must be operated if the trip has been isolated?
True
True or false
When the recovery switch is operated the HCMT automatically matches the MR pressure of the attached train?
True
In the event of a pulse switch module, which BPS needs to be operated?
Get home mode
What’s position 3 of the recovery switch?
Pulled
What’s position 3 of the recovery switch?
Pulled
What’s position 2 of the recovery switch?
Pulling other train
Which BPS if operated requires you to detrain passengers if operated?
(5 answers)
• MR Pressure Switch
• Traction Interlock
• zero speed
• trip
• drivers safety device
3 main electrical faults?
• Circuit breakers
• Traction
• Auxiliary Power
Which system monitors the status of the position of the CBs?
eTIS
When conducting a recovery procedure the HCS must be isolated?
Yes
Max amount of times a driver can re-set a CB?
Twice
At what BP pressure will the EMy brakes apply when in recovery mode
300kpa
Which of the follow are considered single point failure CBs?
(4 answers)
• Cab activation
• brake control supply
• emy brake loop supply
• traction control
True or False
If the single point CBs cannot be re-set the train needs to be declared disabled?
True
If the driver is presented with a traction and or aux fault, which button should a driver press to rectify the fault?
TCU/ACU reset
What is the most likely cause of the traction and aux power failing simultaneously?
HSCB tripping
What the functions of the towing unit?
It’s for the HCMT brake control to interface with other rolling stock via a traditional brake pipe connection
It reads and writes BP signals
The HCMT is fitted with a continuous brake pipe?
No
True or False
Most electrical system will self isolate?
True
Where is the uncouple button located?
OJT panel
When on the mainline, what needs to be met for a hard stable?
• Being on a platform
• Protected by a home signal
• Not fouling level crossings
• TC permission
How will an defective door, open or close, be shown on the screen?
Red
How will an isolated door be shown?
Yellow
How many times will an obstructed door attempt to close before returning to the open position?
4
Which scenarios will prevent a driver from obtaining traction? (3 answers)
• Obstructed door
• Trailing cab left open
• External EAD
True or False
If a bulkhead door cannot be closed, the driver must operate the traction interlock BPS to obtain traction?
False
If an internal emy release door is in stage 1 when stationary, how long before it could be open by a passenger?
20 seconds
After pressing the DER inhibit for door activation how long is it inhibited for?
120 seconds
How long does the cab EAD override inhibit the doors from releasing?
5 min
What are the drivers duties when isolating an affected door?
Tri key into mechanical isolation hole, rotate key in isolate position, observe the door indication lamp is illuminated red, push saloon door open button to confirm its lock, sticker
If an external saloon emy access device (EAD) has been operated, traction power is available?
No
What are the drivers duty when re-setting the DER?
• Release platform side doors
• Make PA
• Press DER INHIBIT button (if DER activated off-side), to extend timer one last time before exiting cab
• Log a TEC
• Conduct Full Cab Unattended
• Locate door
• Once affected door has been located:
- Check DER handle clear of obstruction
- Remove obstruction (if required)
- Return DER handle to upright position and close flap
After an external saloon emy access device (EAD) has been activation, manually closing the doors will auto reset the eTIS?
Yes
If an open external saloon emy access device (EAD) cover is not assessable on the platform side, it should be left open and closed on the next available station stop on the correct platform side?
Yes
How long must the external cab emy access device (EAD) be pressed before the cab door releases?
10 seconds
True or False
If there is a substandard beacon read, any doors that are not identified to be on the platform will remain grey and be inhibited from opening?
True
What are the steps of the ASDC override procedure?
• PA
• SDU to check doors
• Identify correct platform side by opening cab door
• Press ASDC override button and select cars to release
• Press door release for platform side
• Report fault and lost time to Metrol
Which isolating cock should be used to pneumatically isolate a panto?
Saloon area isolating cock (U12)
What are the drivers duties if presented with a brake disc over temperature warning TMS alert?
Operate at low speed, submit TMM
Physical signs of brake faults include?
• Smoke
• Retardation
• Smell
• Passenger report
When safe to do so what is the drivers duties if presented with a dragging brake bogie car XXX TMS alert?
• Main status screen on page 2 on the HMI to observe brake cylinder pressure
• MC to coast
• Observe brake cylinder pressure to below 20KPA
• MC to max brake and back to coast
• Repeat fanning the brakes
• Observe brake cylinder pressure to ensure sticking brake has released
True or False
If sticking brake does not release, it must be isolated?
True
If an individual bogie must be isolated, which isolating cock would the driver operate?
The one outside in the BCU
True or False
If both bogies on a Tc car require isolation, the train must be declared disabled?
True
True or False
There is no requirement to isolate the park brake when isolating EP friction brakes?
False
What indications would a driver get if there is a leak or rupture of 1 or more airbags?
Flat airbag tile illuminated, TMS
Where are the air suspension isolating cocks?
B side, end 2
Whats the max speed with defalted airbags?
40km/h
True or False
If the driver is required to isolate the air suspension, both bogie 1 and 2 isolating cocks must be operated?
True
If the lead Tc car main res reads 999kpa and the trailing Tc reads 510kpa where is the leak?
The trailing Tc
True or False
Is there is a MR failure in the Tc car the train is unbraked?
True
What Equipment is lost with a MR failure in a Tc Car?
(8 answers)
Trip – loss of function
Holding Brake – loss on Tc car
Emergency Brakes – Loss on Tc car
Friction Brakes – loss of service brake on Tc car
Sanders – affected car
Horn - inoperative
Air Suspension – 40km restriction
Drivers & OJT seat – no suspension
THE-F-SHAD
Where are the MR end/through cocks?
B side, 1 end and 2 end of every car
In the event of a MR fault on a Tc car which equipment must be isolated?
• MR
• Air compressor
• Trip
In the event of a MR fault in a DMp car which equipment must be isolated?
• MR
• Park Brakes
True or False
With MR failure on a DMp, the panto may remain raise due to the operation of the Aux compressor?
True
What equipment is lost with a MR failure in a Mp Car?
(7 answers)
• Traction Motors – lost of ED brakes
• APS (Auxiliary Power Supply) in Tc Car (variable) depending on the position on the Mp in the consist
• Pantographs – no 1500v DC
• Friction Brakes – on affected car
• Air Suspension – 40kms
• Park Brakes – remain in APPLIED position
• Sanders – affected car
TAP-FAPS
What equipment is lost with a MR failure in the centre Trailer car (DT)?
(4 answers)
• Friction brakes – on affected car
• Air suspension – 40km speed restriction
• Park Brakes – remain in APPLIED position
• Sanders – on affected car
FAPS
True or False
There is no electrical connection on a HCMT coupler?
True
Where is the transition coupler located?
Tc car
