[Cresterk]

Originally Posted by shortbread

CNG has very different properties to LPG. Even if a leak were to occur, the natural gas would dissipate into the atmosphere because it is lighter than air. Natural gas is not toxic or corrosive and doesn't contaminate. So this theory of the gas coming out of the ruptured tank, lying about, causing a big fire hazard is highly unlikely.
.

Please read my comment properly. I didn’t say anything about CNG leaking out and catching fire. I said the cylinder itself is under extremely high pressure so sufficient external impact from an accident could immediately cause an explosion from the gases suddenly escaping.

https://youtu.be/itGK47ogVBI?si=JF8u9QQbjwGBiNx2

Something like this is what I’m referring to. Crash tests of CNG equipped vehicles would provide some interesting data.