After inspection, seven manholes in downtown Rio has 100% chance of exploding

Engineers say that access would cause any spark explosion.
Crea RJ-21 manholes inspected on Friday (8).

G1 RJ


The bottom of the Regional Council of Engineering, Architecture and Agronomy of Rio de Janeiro (CREA-RJ) who oversaw 21 manholes in downtown Rio, this Friday (8) indicates that, overall, seven of them have 100% chance to explode if any spark is lit near the culvert. Five are located in Uruguaiana Street, Seventh Street between September and Customs Street, and the other two are on the streets of the Assembly and seven in September. According to CREA, the risk is due to the presence of gas in the gallery.

Four culverts no evidence of gas and the remainder was considered unhealthy, that is, although not present a risk to the population, improper condition presents no case officer needs to come down and do some repair.

The engineer of the review committee and accident prevention Crea-RJ, Luis Cosenza Light argues that one should not be held responsible for the explosion of culverts.

"The origin of this gas has to be identified, but there is huge possibility that the CEG. For an explosion to occur it is necessary oxygen, and an element that makes the ignition, which can be a match or a short circuit. The presence of 5% to 15% gas already offers risk. What was proved is that irrespective of quantity, was found the presence of gas in the underground. It does not matter at this point blame, but rather find a solution to avoid this. "

According to information from the Crea-RJ, CEG representatives were also invited to the survey, but did not send representatives.

Next week, on a date to be set, the Crea-RJ to inspect drains in the neighborhood of Copacabana.

On the afternoon of Monday (4), four manholes exploded while in the Assembly Street, at the corner of Avenue Pecanha, near the Largo da Carioca.

According to information from the Crea-RJ, CEG representatives were also invited to the survey, but did not send representatives.

Problems in the fifth
More than two culverts had problems of Light on Thursday (7), the Center, however, there was no explosion. A cigarette butt thrown in a manhole caused smoke and startled pedestrians passing by Uruguaiana Street.

On Thursday night, firefighters were called the fire station to check a gas leak in a manhole Rua Sete de Setembro. Light said the technicians were doing an on-site maintenance, when they found gas in the manhole. Since the advice of the Gas Company (GEC) said it would investigate the case.

Manhole explosions
Since early 2011, Rio de Janeiro has suffered several outbreaks of culverts. The cases have frightened and caused inconvenience to pedestrians.

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