Originally Posted by Andy Stevens
AFFF-what a waste of time.
..........with useless AFFF.
Cobblers ! AFFF is absolutely fantastic stuff! When we had it fitted to the pumps (way back in a former life) it made a huge difference in knock down times. We used it for everything barring 'leccy and metals....
The point is it is good for what it was designed for, not in titchy quantities in extinguishers. Stick it through a spray/fog nozzle on an HP reel attached to a 2500L/Min pump and it will put down anything......
In extinguishers, it just makes a water/gas extinguisher more efficient on fires that you would normally tackle with this particular type of extinguisher. Don't remember ever using one on a car fire. DP for fuel fire knock down (No cooling so watch for re-ignition) or CO2 for Engine compartment (through the grill) or small electrical wiring fires to minimise "collateral" damage.
I carry DP on board as fuel leak or spillage seems to be, in my opinion, the biggest threat and DP gets the job done there. Engine fire under the cowling, I suppose CO2 would be my preferred through an aperture followed by copious buckets of (free!) water…… put enough water on most things and they will go out due to the cooling effect, rather than blanketing/starving. Not metals, though I did put out a magnesium fire with water once (huge amounts of water, mind). Spectacular but effective (and definitely not recommended for the faint-hearted)..
Have I rambled on enough yet? Thought so….. TAXI!