Train Prep & Safety Apparatus Flashcards
What are the different kind of Train Preps?
Post Maintenance
Mainline Prep
Revenue Prep
Pre-movement Prep
When is a Post Maintenance Prep done?
After full maintenance exam
After repairs following collision
After safety critical equip. repair or brake failure repairs
When is a Mainline Prep done?
Prior to train entering mainline or revenue service for the first time that day
When is a Revenue Prep done?
When train has received Post Maint. or Mainline prep earlier that day and it is returning to service
When is a Pre-movement Prep done?
When train is being moved within a workshop/yard/siding
(Same as Revenue Prep but Trip isn’t included)
What does the ‘safety apparatus’ on the train consist of? (8)
Hand operated pilot valve
Foot operated pilot valve
Emergency application valve
Emergency pilot valve
Control governor bypass circuit
Control governor
Trip apparatus
VICERS Equipment
When does the Emergency Application Valve activate?
When pressure on the pilot valve (hand or foot) is released
What pressure in the BP does the control governor cut power to the master controller?
310-340 kPa
What pressure in the BP will the control governor restore power to the master controller again?
400-430 kPa
What pressure is main res. air at when BP is fully charged at 550kPa?
Main res. air is between 585-725kPa
How do you do a EP Brake Test?
BCH to RUNNING and RELEASE
- observe BC pressure red. to 0
Ensure BP (550)and Main res. (725)
at operating pressure and EP CB is set
Increase BCH through each step,
pausing in each step to check
BC and BP pressure remain
constant
Decrease BCH through each step
pausing in each step to check
BC and BP pressure remains
constant
Move BCH to RUNNING and RELEASE and observe BC
pressure reduces to 0kPa
As you move the BCH through each braking step what are you testing?
That the A, B and C wires are functioning correctly
How do you do a Automatic Air Brake Test?
Ensure BP fully charged and no audible air flow from Charging valve
Move BCH to Step 2 and trip the EP CB
- Low pressure flag rises
- BP pressure down, BC
pressure up
Move BCH through to FULL SERVICE
- BP pressure down,
- BC pressure up
Return BCH to MINIMUM REDUCTION. Leave for 10 seconds, observe:
- no reduction in BC and no rise
in BP
Move BCH to EMERGENCY and observe BP pressure deplete rapidly to 0kPa
Return BCH to RUNNING and RELEASE and observe no audible air flow
- BP pressure up to operating
pressure
- BC pressure depletes to 0kPa
Reset the EP CB and observe low pressure flag lowers
Place BCH to STEP 7 EP
How do you do the Hand Pilot valve and Control Governor test?
Insert controller key into Reverser and unlock
Depress MCH and move Reverser to FORWARD
Remove hand from MCH and observe BP pressure reduce rapidly
When BP pressure falls below 290kPA depress MCH and move to NOTCH 1
- Observe Ammeter does not register
any current - confirming Control
Governor is OPEN
As BP pressure rises, observe Ammeter registers current when Control Governor closes, then immediately shut off power by moving the MCH to OFF
How do yo do the Foot Pilot valve and Control Governor test?
Depress Foot Pilot valve to SET, noting indicator on fault panel illuminated
Release Hand pilot valve and observe BP pressure remains constant
Depress Foot Pilot valve to NOT SET position, observe BP pressure reduces rapidly and Foot Pilot valve indicator light extinguishes
Return Foot Pilot valve to SET and observe BP pressure rising
Remove Foot completely from Foot Pilot valve and observe BP pressure reduce rapidly
Return foot pilot valve to the SET position and observe BP pressure rises to operating pressure
How do you do the VICERS test?
Turn the key switch momentarily to TEST and release to initiate an automatic self-test sequence.
Observe:
Acknowledgement button flash
Audible buzzer
Vigilance fault indicator illuminates, then extinguishes
Auto test involves:
The VAV relays twice in quick succession
- monitor BP pressure change
VAV releases until BP pressure drops to the point Control Governor opens
VAV will then re-energise allowing pressure to rise and Control Governor to close
Check of task linking between driver controls and VM40
How do you do the Trip Apparatus test?
Head lights on HIGH BEAM
Marker lights to WHITE
Exit cab through B side door with switch stick
Inspect front of train for high and low beam lights, white marker lights, headboard operational
Strike the trip mechanism with switch stick
Observe BP pressure in van area and duplex gauge reducing below 150kPa
Switch off headlights
Marker lights to AUTO
BCH to EMERGENCY and drain BP to 0kPa
BCH to RUN and RELEASE - charge BP
BCH to STEP 7 EP
