That must have been a very unpleasant experience. With the Lehr 2.5 or 5.0 that can be run on the one pound Coleman type bottles, the only way to stop the leak in a situation like this is to unscrew the bottle.
The procedure to unscrew the bottle is this:
Flip the quick release on the band holding the tank.
Pull the tank back about three inches.
Grasp the brass hose fitting with one hand and rotate the tank with the other.
I've never tried to do this fast but it would take at least several seconds.
I don't think there was a lot of danger
but it would certainly make me pucker up a bit.
As Robwilk pointed out, the flash range of propane is pretty narrow. Actually a little narrower than gasoline vapors. It's high ignition point makes it unlikely that it would ignite unless there was an open flame present.
I think most of the propane vapors would have drained overboard
, but if the wind
was very calm, some might settle into the boat. It would dissipate from an open boat pretty quickly with just a small breeze. Gasoline on the other hand would fall into the bilge
as a liquid and slowly vaporize keeping the gas / air mixture in the danger
zone for a longer time.
I'll forward a link to this thread to the head engineer
at Lehr. I'm sure he'll be interested.