<<>>>
From a first aid firefighting point of view a light duty fire blanket can cope with pans on hobs of up to 3 litre capacity/300mm diameter.
Over that Wet Chemical is more effective, usually in a fixed system with manual release and sometimes fusible links, as well as being in portables.
Not all facilities have fixed systems, it's hit and miss, with identical premises fitted out at the same time not both having them. If a fixed system isn't present we require portable Wet Chemical units as a minimum.
Good staff training and an effective duct cleaning & filter change regieme apply across the board (80% of the staff in one complex full of units with frying had little useful training and didn't know where the Ansul pull stations were or how they worked).
A pan on a hob with a domestic type cooker, no ductwork, etc as is seen i many places needs little more than a light duty blanket. Where gas hobs for pans are part of the frying range set up they have WC nozzles for them as well as the main fryers (why not as the pipework & links pass them anyway, plus they have the ducting above them). I've seen recent systems where extra vertical pipework has been fitted to direct a zozzle into grills as well
