on 03/04/2018, Scott supposed :
Surely not? Electrical equipment in the vicinity of a gas leak. Why
do you think mobile phones are banned at petrol pumps?

They are mostly banned because they distract the pump operator, there
has never been a recorded incident of a phone causing ignition, but
plenty of myths.

I did say 'More effective, would be something like a vacuum cleaner
hose, which you could drop to the bottom and suck the gas out - except
for the fact that the gas would then pass through the vacs motor.' In
other words, not something to try.