@tsah15
yes, u are right, it wasnt an exposion, I was ther at thespot when the fire started (the dabba was about 5 cars ahead of us), it started as a small fire in the engine under theseat, the driver tried in vain to stop the fire but eventually backed off when the flames got too much,, Despite the whole car being engulfed in fire, (including the rear, where the cng cylinder was, The cylinder did not explode, its emergency relief valve burst and there was a quite a firejet while the valve was at it, BUT, the point is, even thought CNG was responsible for the fire, the Cylinder did NOT Explode