The explosion of a automobile powered by pure gasoline (CNG) at a gasoline station within the north of Rio de Janeiro on Tuesday (26) raised new doubts in regards to the security of such a gasoline in vehicles. It turned in style as a result of it’s cheaper than gasoline and ethanol, nevertheless it requires further care in putting in the right gear, in order to not trigger accidents.
This various has existed in Brazil for years, however the truck drivers’ strike in 2018, which led to a scarcity of gasoline and ethanol at service stations, made drivers search for different gasoline options. Along with availability, such a gasoline might be 50% cheaper than different functions, in accordance with the Brazilian Affiliation of Piped Gasoline Distributors (Abegás).
In precept, any automobile might be transformed to gasoline with CNG. The method, nonetheless, have to be carried out by an entity acknowledged by the Nationwide Institute of Metrology, High quality and Know-how (Inmetro), in addition to all the upkeep required for many who use pure gasoline.
Relying on the scale of the automobile, the cylinder to carry the gasoline may have better or lesser capability. Normally, they’re positioned within the trunk of the automobile, however they are often below the trunk or exterior the automobile, a place that will increase the probabilities of explosions.
Is pure gasoline harmful?
In keeping with Gustavo Galiazzi, technical supervisor at Abegás, vehicular pure gasoline by itself is a comparatively protected gasoline. “Along with being much less flammable than gasoline or ethanol, CNG is lighter than air and dissipates rapidly within the occasion of a leak”, he argues.
Environmental benefit of CNG
When in comparison with different fuels resembling gasoline and diesel, pure gasoline has a 20% decrease emission of carbon dioxide. Taking into consideration that it’s a low cost gasoline choice, it finally ends up being a viable various for lowering environmental injury.
CNG has been inspired in giant metropolises in a number of international locations for passenger automobiles, city transport, cargo and rubbish assortment. In Madrid, half of the municipal bus fleet already makes use of pure gasoline, and the trail is similar within the US, the place there are already 200,000 vans tailored to the gasoline.
In Brazil, at the moment, the fleet powered by pure gasoline is simply over 2.5 million automobiles, most of them mild, resembling taxis, captive fleets, autonomous and personal vehicles.
However that actuality is about to vary. In keeping with mechanical engineer Gilmar Vigiodri Godoy, Comgás already has a undertaking to make use of CNG in vans and buses as effectively. Worth for cash once more is the rationale. Gasoline runs 250 kilometers at R$ 25, whereas a liter of diesel runs two.
What precautions ought to I take?
Yearlyin accordance with the Nationwide Company of Petroleum, Pure Gasoline and Biofuels (ANP), the automobile must move a pure gasoline system survey, the identical as that carried out instantly after the conversion to CNG. Cylinders additionally must move assessments that assess their situation each 5 years.
In keeping with Bruno Leone, supervisor of GNV Anchieta, a pure gasoline installer licensed by Inmetro, cylinder upkeep is crucial precaution. It performs a “retest” or “requalification”, which checks for potential corrosion within the cylinder, if it has the identical weight because it had initially and analyzes the hydrostatics, that’s, if the inner gases and liquids are in steadiness. “Following all of the institute’s regulatory requirements, the danger is minimal”, feedback Leone.
Additionally it is really useful that drivers run, not less than as soon as every week, with the automobile’s unique gasoline. As a result of it’s dry, CNG shouldn’t be used uninterruptedly, as it could trigger injury to the automobile.
One other suggestion is that the motive force and passengers get out of the automobile and stand in entrance of it throughout refueling. Thus, within the case of explosions, the injury will solely be materials. The identical is oriented to the vehicles which can be ready their flip on the station.
The ANP harassed that it continuously inspects the installations of gasoline stations. The prospect of accidents, for the company, is because of insufficient set up or upkeep or carried out in non-accredited workshops.