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Blackout Caused By Device Meant To Protect Superdome’s Power Supply

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A general view of the Superdome after a sudden power outage in the second quarter during Super Bowl XLVII at the Mercedes-Benz Superdome on Feb. 3, 2013 in New Orleans, La. (credit: Jamie Squire/Getty Images)

A general view of the Superdome after a sudden power outage in the second quarter during Super Bowl XLVII at the Mercedes-Benz Superdome on Feb. 3, 2013 in New Orleans, La. (credit: Jamie Squire/Getty Images)

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NEW ORLEANS (AP) — The failure of a device meant to protect the power supply to the Superdome caused the Super Bowl blackout, the stadium’s power company said Friday as it took the blame for the outage that brought the game to a halt for more than a half-hour.

Officials of Entergy New Orleans, a subsidiary of New Orleans-based Entergy Corp., said the device, called a relay, had been installed to protect the Superdome from a cable failure between the company’s incoming power line and lines that run into the stadium.

Company officials said the device performed without problem during January’s Sugar Bowl and other earlier events.

They said the device has been removed and replacement equipment will be installed.

The power failure at Sunday’s big game cut lights to about half of the stadium for 34 minutes, halting play between the Baltimore Ravens and San Francisco 49ers.

Officials of the power company and from SMG, the company that manages the stadium for the state, had said earlier this week that they believed the problem originated in the switching gear, which is housed in a building known as “the vault” near the stadium. The Superdome has a direct line feeding from a nearby Entergy power substation. Once the line reaches the vault, it splits into two cables that then go into the Superdome.

The FBI had ruled out cyberterrorism as a cause.

The announcement came as Entergy officials prepared to go before a committee of the City Council on Friday for questions about the outage. The council is the regulatory body for the company.

SMG and Entergy announced earlier this week that they had been unable to find a specific cause for the outage and would hire an independent consultant. It wasn’t immediately clear whether they would go through with the hiring.

The electrical equipment had been replaced after stadium managers expressed concerns the Superdome might be vulnerable to a power failure like the one that struck Candlestick Park during a 49ers Monday Night Football game in 2011. That outage was blamed at least partly on a transformer explosion.

City officials had worried that the outage might harm New Orleans’ chances of getting another Super Bowl.

But NFL Commissioner Roger Goodell downplayed that possibility after the outage, saying the NFL planned to keep New Orleans in its Super Bowl plans. Mayor Mitch Landrieu said the city intends to bid for the NFL’s 2018 championship game.

(© Copyright 2013 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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