ON TRAIN FIRE SYSTEM Flashcards
What are the two types of fire extinguishers on a 150?
Automatic 1 x AFFF 15L bottle
Manual 1 x AFF 15L bottle
What does AFFF stand for?
Aqueous film forming foam.
How many portable fire extinguishers are on a class 150 unit?
Four. They can be found in the saloons and each driving cabs.
Within the cab is the fire integrity systems, what is their function?
To indicate the system is intact and has not been discharged.
If the fire integrity system is functioning correctly, what happens to the fire integrity light?
The yellow light will be illuminated at all times.
When must the fire integrity light be checked?
During train prep.
If the yellow fire integrity light is not illuminated on the train, can it go into service?
No, it can’t.
How do you operate the fire integrity system?
Using the fire switch provided in the driver’s cab, protected by a glass seal. MCB.
What happens when the fire switch seal is operated?
The automatic bottle will be discharged on the engine on that carriage only. If discharge takes place the yellow integrity light will go out in that cab only. (also known as the manual over-ride switch)
The fire system detects an engine fire through a pyrotechnic cord placed above the engine and auxiliary heater.
If this cord detects the heat of a fire, what following events will occur? (6 answers)
The fire bells ring (in all cabs)
The affected engine will shut down
The auxiliary heating will shut down
A hazard light will illuminate in the affected vehicle
The automatic extinguisher will activate below 3mph (to prevent foam from blowing off the engine at speed)
The in-cab fire integrity light will extinguish
Does the fire system apply the brakes?
No, it does not. It is the driver’s responsibility to stop the train in a safe place to deal with the emergency.
What procedures must you carry out if the automatic system does not discharge the foam? (4 answers)
Break the glass seal (override switch)
Operate the switch (the light should go out and foam discharges)
If this does not work you will have to operate the manual fire extinguisher
You must pull the manual ‘fire pull’ handle and this should discharge the fire bottle
If all else fails, you can use the hand held fire extinguisher
Do not place yourself in a position of danger.
The manually operated fire pull handle connects to the fire bottle via what?
Bowden cable.
If a fire has been extinguished, and authority has been gained to move the train to a designated location, the engine would have to be isolated out of use.
A competent person must be used to monitor the affected vehicle and raise the alarm should a fire restart, in conjunction with the rules.
True or false?
True.
How do you isolate the fire system?
Use the chrome switch in the cupboard to the left of the intermediate saloon door.
