Element 9 mark 4 traction

18問 • 1年前

問題一覧

9.1 Identify all the door interlock status indicators

External orange hazard lights for coach interlock status Internal orange light by Door A for coach interlock status Blue interlock status light at each activated panel by doors A and D Driving cab blue interlock lighting

9.2 Explain the process to follow when interlock is not gained during the dispatch process

Look for external hazard lights along the coaches Recycle door up to 3 times Try the black button Check DVT Try another panel Get signal reverted, liaise with driver and carry out fault finding procedures

9.3 What does a red bar light indicate?

That a passenger door is closed properly but not locked

9.4 If you hear the announcement “Attention train crew, passenger alarm operated” what are the three different reasons this could be for?

Disabled passenger alarm Passenger communication apparatus Emergency door release alarm

9.5 Describe the four stages of the K-Tex window breaking equipment and how each is reset

0-15% High pitched warbling sound emitted 15-20% Seal broken 50% onwards applies train emergency brakes 100% handle revealed, glass shatters when pulled

9.6 When would a simple door test be required and how would you carry it out?

Whenever the continuity of the UAC cable has been broken, for example re-attaching vehicles or after a collision with an object that has detached the UAC cable Blocking the adjacent line or choosing cess side Activate a panel by a passenger door (Not DVT crew access door) Release on one side Check yellow passenger door control buttons have been illuminated on the intended side and not on the other Physically press the passenger door buttons on the non-released side

9.7 When would a full door test be required and how would you carry it out?

When stated on TM diagram or instructed to do so by Control. Check with the Driver that the door test can commence and discuss and line block requirements Join train at DVT crew door; check in DVT that interlock present. Announce to staff onboard that a door test is about to commence Start with the off side – line blocked if required, release the off side Walk through the train checking the intended side is released and the other side is lock Open each door and close each door Check red bar light and passenger halo lights are illuminated on the intended side Check the yellow coach interlock light is illuminated (by door A) Perform a pinch test/Listen for the hustle alarm, close each door fully

9.8 Name three considerations that need to be made if your train is being loco-hauled

Brake continuity test Screw coupling if DVT leading Isolate power to kitchen

9.9 What is in the environmental panel that could cause loss of interlock on MK4 vehicles

ASCB tripping FDMCB tripping Auxulirary switch in the cut out position

9.10 What fault finding process would you adopt when interlock is lost on the move? How would you check it has come back?

Check DVT doors Walk through the train checking red bar lights by each door and the yellow interlock light in door A in each coach Look in the environmental panel for anything that has tripped Ask the driver if they have regained interlock

9.11 What would be the symptoms of the following circuit breakers tripping DCCB FDMCB ASCB

DCCB – Loss of functionality of the door controls. The red bar lights in the coach will be extinguished. Interlock is not lost and the train will not stop. When dispatching and not yet discovered both released doors on that coach will not close without manual assistance. B. FDMCB – interlock is lost in that coach, yellow interlock light by door A will be illuminated C. ASCB – total loss of power to the coach including door security. No lights, HVAC or sockets working

9.12 What is the procedure to follow if you find a single red bar light out on a MK4 vehicle?

Stop the train by calling the driver or if a few minutes from a station wait by the door Communicate with driver or dispatcher Once at a stand lock the door out of use, label Report to control Log book and place on table

9.13 How would you identify a wrong side door failure and what would your required actions be?

Doors release on the wrong side Lock them up as soon as possible Make an announcement to stay clear of the doors as there is a fault Report to control and use the egress handles to let passengers off

9.14 Why is it important to report all door faults?

So that the faults are highlighted for maintenance attention. Otherwise they may get worse or cause serious delays or further damage to the train

9.15 How would you reset the plug sockets if the red light is illuminated?

Local lights to the on position and if necessary check the circuit breaker

9.17 If you are asked to assist with a brake test and the locomotive has run around, where and how would you do this?

From the panel in coach B by door B Confirm with the driver that you are about to start Place the brake lever in the horizontal position Wait 30 seconds Reinstate the lever to the vertical position Confirm with the driver everything is ok

9.19 Describe how you would carry out a rotation test

The driver will inform you of the axle to check Use some ballast to mark both wheels on that axle in the same place Use hand signals to tell the driver to draw forward Watch the wheels and make sure they both turn at the same rate together

What fault could a train not leave a maintence depot with

brake fault, door fault, door control panel fault, missing safety equipment, driver safety device fault

week 2 pts

Chris C · 70問 · 2年前

week 2 pts