[pietor]

https://en.m.wikipedia.org/wiki/Viareggio_train_derailment

32 dead because of derailment of LPG transporting train. Is the hazard posed by LPG much different to LNG?

[jjk166]

Petroleum gas is heavier than air so it stays at ground level for an extended period of time, natural gas is lighter than air so it is dispersed quickly. The gasses in petroleum gas also have significantly lower ignition temperatures.

[ars]

Yes. Propane is heavier than air, so it sits on the ground and just burns and burns.

LNG rises up into the air and is gone.