33. NGV/CNG is not a new technology. It has 70 years of history. It is widely proven and its technological advances are constant.
34. Being lighter than air, in case of eventual leakage, compressed natural gas rises and rapidly dissipates. Instead, gasoline spills and moves downwards, what increases fire and explosion risk considerably during an accident or leakage.
35. NGV/CNG requires a 600º C temperature for ignition while gasoline and liquefied petroleum gas ignite at 450º C. This is the reason why it is much more improbable that an NGV catches fire, under any circumstance.
36. The fuel circuit for natural gas is hermetic and has no air inside. Therefore there is no spontaneous ignition. On the contrary, in liquid fuels tanks, there is always flammable mixture, since they are open to the atmosphere.
37. Cylinders are manufactured under very strict safety norms and are subject to tests with pressures much higher than the ones existing during a regular refilling. Design and testing pressure is 300 Bar, they do not explode at less than 460 Bar, and the working pressure is 200 Bar.
38. Due to their robustness, structure, shape and its location inside the vehicle, cylinders are much less dangerous than a gasoline tank in case of collision. For example, they undergo tests with fire and firearms.