Power company says Super Bowl blackout was caused by device designed to prevent power outages

  • Article by: KEVIN MCGILL , Associated Press
  • Updated: February 8, 2013 - 5:45 PM

NEW ORLEANS - The company that supplied electricity to the Super Bowl says the blackout that halted the big game was caused by a device it installed specially to prevent a power failure.

But the utility stopped short of taking all the blame and said Friday that it was looking into whether the electrical relay at fault had a design flaw or a manufacturing defect.

The relay had been installed as part of a project begun in 2011 to upgrade the electrical system serving the Superdome in anticipation of the championship game. The equipment was supposed to guard against problems in the cable that links the power grid with lines that go into the stadium.

"The purpose of it was to provide a newer, more advanced type of protection for the Superdome," Dennis Dawsey, an executive with Entergy Corp., told members of the City Council. Entergy is the parent company of Entergy New Orleans, the city's main electric utility.

Entergy officials said the relay functioned with no problems during January's Sugar Bowl and other earlier events. It has been removed and will be replaced.

All systems at the Superdome are now working, and the stadium was to host a major Mardi Gras event Saturday night, said Doug Thornton, an executive with SMG, the company that manages the stadium for the state.

The relay was installed in a building near the stadium known as "the vault," which receives a line directly from a nearby Entergy substation. Once the line reaches the vault, it splits into two cables that go into the Superdome.

Sunday's power failure cut lights to about half of the stadium, halting play between the Baltimore Ravens and San Francisco 49ers and interrupting the nation's most-watched sporting event for 34 minutes.

Not long after the announcement, the manufacturer of the relay, Chicago-based S&C Electric Co., released a statement saying that the blackout occurred because system operators had put the relay's so-called trip setting too low to allow the device to handle the incoming electric load.

The equipment was owned and installed by Entergy New Orleans.

"If higher settings had been applied, the equipment would not have disconnected the power," said Michael J.S. Edmonds, vice president of strategic solutions for S&C.

In a follow-up statement, Entergy said that tests conducted by S&C and Entergy on the two relays at the Superdome showed that one worked as expected, the other did not.

Entergy spokesman Mike Burns said both relays had the same trip setting.

Entergy's announcement came shortly before company officials went before a committee of the City Council, which is the regulatory body for the company.

During the committee hearing, council member Susan Guidry asked Entergy executives whether they were "fairly certain" that the relay was faulty.

"That is correct," Dawsey said.

However, when asked if the outage was caused by the design or a defect in a part of the equipment, Entergy New Orleans CEO Charles Rice said that had not been determined.

"The equipment did not function properly," Rice said. "At this particular time, based upon our analysis, we cannot say definitively that there was a defect in design. What we do know is that the equipment for some unknown reason, at this particular time, did not react the way that it should have."

Asked if Entergy and SMG still plan to hire a third-party investigator to get to the bottom of the cause, Rice said that possibility remains open.

"We'll work closely with SMG, and if there is a need for a third-party investigation, we will do that," Rice said, adding that Entergy was also working with the relay manufacturer.

Shabab Mehraeen, an assistant professor of electrical engineering at Louisiana State University, said relays are common electrical fixtures in businesses and massive facilities such as the Superdome.

"They are designed to keep a problem they sense from becoming something bigger, like a fire or catastrophic event," he said.

The devices vary in size. Mehraeen, who was not familiar with the relay at the Superdome, said he "wouldn't be surprised if it was bigger than a truck."

The reasons the devices fail are the subject of much academic research into the interaction of relays with the complex electrical systems they regulate.

"It's not unusual for them to have problems," Mehraeen said. "They can be unpredictable, despite national testing standards recommended by manufacturers."

Entergy and SMG had both upgraded lines and equipment in the months leading up to the Super Bowl. Rice said the new gear, with the faulty relay, was installed as part of a $4.2 million upgrade by Entergy that included a new power line dedicated solely to the stadium.

In a separate project, SMG replaced lines coming into the stadium after managers expressed concerns the Superdome might be vulnerable to a power failure like the one that struck Candlestick Park during an NFL game in 2011.

Thornton stressed Friday that the dome was drawing only about two-thirds of its power capacity Super Bowl night. He said typical NFL games in late August or September can draw a little more.

Friday's announcement appeared to absolve Superdome officials of any missteps in the blackout.

City officials had worried that the Super Bowl outage might harm New Orleans' chances of getting another NFL championship game.

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

___

Associated Press Writer Michael Kunzelman in New Orleans contributed to this report.

  • get related content delivered to your inbox

  • manage my email subscriptions

ADVERTISEMENT

Toronto - LP: D. Hutchison 2 FINAL
NY Yankees - WP: M. Tanaka 5
Washington - WP: S. Strasburg 2 FINAL
Miami - LP: N. Eovaldi 1
NY Mets - WP: J. deGrom 10 FINAL
Atlanta - LP: E. Santana 2
Boston - WP: J. Kelly 3 FINAL
Baltimore - LP: M. Gonzalez 2
Milwaukee - LP: W. Peralta 0 FINAL
Pittsburgh - WP: V. Worley 1
Chicago WSox - WP: J. Danks 10 FINAL
Tampa Bay - LP: N. Karns 5
Cleveland - WP: C. Kluber 7 FINAL
Minnesota - LP: A. Swarzak 2
Detroit - LP: R. Porcello 2 FINAL
Kansas City - WP: J. Guthrie 5
Seattle - LP: H. Iwakuma 3 FINAL
Houston - WP: C. McHugh 8
Los Angeles - WP: C. Perez 8 FINAL
Chicago Cubs - LP: J. Turner 5
Texas - WP: S. Tolleson 2 FINAL
LA Angels - LP: H. Street 1
Philadelphia - LP: M. Gonzalez 6 FINAL
Oakland - WP: S. Doolittle 8
San Francisco - LP: R. Vogelsong 2 FINAL
San Diego - WP: I. Kennedy 8
Arizona - LP: W. Miley 3 FINAL
Colorado - WP: C. Bergman 8
Cincinnati - WP: A. Simon 7 FINAL
St. Louis - LP: L. Lynn 2
San Diego 22 FINAL
Buffalo 10
Dallas 34 FINAL
St. Louis 31
Washington 34 FINAL
Philadelphia 37
Houston 17 FINAL
NY Giants 30
Minnesota 9 FINAL
New Orleans 20
Tennessee 7 FINAL
Cincinnati 33
Baltimore 23 FINAL
Cleveland 21
Green Bay 7 FINAL
Detroit 19
Indianapolis 44 FINAL
Jacksonville 17
Oakland 9 FINAL
New England 16
San Francisco 14 FINAL
Arizona 23
Denver 20 FINAL
Seattle 26
Kansas City 34 FINAL
Miami 15
Pittsburgh 37 FINAL
Carolina 19
Chicago 9/22/14 7:30 PM
NY Jets
NY Giants 9/25/14 7:25 PM
Washington
Columbus 4 FINAL
Carolina 3
Buffalo 0 FINAL
Washington 1
St. Louis 3 FINAL
Columbus 4
Calgary 1 FINAL
Edmonton 3
Edmonton 0 FINAL
Calgary 1
Old Dominion 45 FINAL
Rice 42
Troy 0 FINAL
(12) Georgia 66
Georgia Tech 27 FINAL
Virginia Tech 24
Eastern Mich 14 FINAL
(9) Michigan State 73
Iowa 24 FINAL
Pittsburgh 20
Bowling Green 17 FINAL
(19) Wisconsin 68
Maryland 34 FINAL
Syracuse 20
Tulane 13 FINAL
Duke 47
Hawaii 12 FINAL
Colorado 21
Marshall 48 FINAL
Akron 17
North Carolina 41 FINAL
(23) East Carolina 70
Army 21 FINAL
Wake Forest 24
Virginia 33 FINAL
(20) BYU 41
(6) Texas A&M 58 FINAL
SMU 6
Rutgers 31 FINAL
Navy 24
Central Mich 10 FINAL
Kansas 24
Utah 26 FINAL
Michigan 10
Florida 21 FINAL
(3) Alabama 42
Louisville 34 FINAL
FIU 3
Fla Atlantic 19 FINAL
Wyoming 20
Indiana 31 FINAL
Missouri 27
San Jose St 7 FINAL
Minnesota 24
Texas State 35 FINAL
Illinois 42
Massachusetts 7 FINAL
Penn State 48
Georgia State 14 FINAL
Washington 45
Appalachian St 20 FINAL
Southern Miss 21
(14) Miss State 34 FINAL
(17) LSU 29
Northern Ill 14 FINAL
Arkansas 52
Middle Tennessee 17 FINAL
Memphis 36
Utah State 14 FINAL
Arkansas State 21
Miami-Ohio 24 FINAL
Cincinnati 31
Idaho 24 FINAL
Ohio U 36
Ball State 23 FINAL
Toledo 34
(13) So Carolina 48 FINAL
Vanderbilt 34
(4) Oklahoma 45 FINAL
West Virginia 33
Ga Southern 28 FINAL
South Alabama 6
UNLV 14 FINAL
Houston 47
Miami-Florida 31 FINAL
(21) Nebraska 41
New Mexico 38 FINAL
New Mexico St 35
Clemson 17 FINAL
(1) Florida State 23
California 45 FINAL
Arizona 49
San Diego St 7 FINAL
Oregon State 28
(2) Oregon 38 FINAL
Washington St 31
Louisiana 9 FINAL
Boise State 34
Texas Tech 9/25/14 6:30 PM
(24) Oklahoma State
Appalachian St 9/25/14 6:30 PM
Ga Southern
(11) UCLA 9/25/14 9:00 PM
(15) Arizona State
Middle Tennessee 9/26/14 7:00 PM
Old Dominion
Fresno State 9/26/14 7:00 PM
New Mexico
Texas-El Paso 9/27/14 11:00 AM
(25) Kansas State
Tennessee 9/27/14 11:00 AM
(12) Georgia
Vanderbilt 9/27/14 11:00 AM
Kentucky
Wyoming 9/27/14 11:00 AM
(9) Michigan State
Northwestern 9/27/14 11:00 AM
Penn State
TCU 9/27/14 11:00 AM
SMU
Iowa 9/27/14 11:00 AM
Purdue
Tulane 9/27/14 11:00 AM
Rutgers
So Florida 9/27/14 11:00 AM
(19) Wisconsin
Colorado State 9/27/14 11:30 AM
Boston College
Western Mich 9/27/14 11:30 AM
Virginia Tech
Maryland 9/27/14 12:30 PM
Indiana
Akron 9/27/14 12:30 PM
Pittsburgh
Bowling Green 9/27/14 2:00 PM
Massachusetts
Arkansas 9/27/14 2:30 PM
(6) Texas A&M
Kent State 9/27/14 2:30 PM
Virginia
Western Ky 9/27/14 2:30 PM
Navy
Minnesota 9/27/14 2:30 PM
Michigan
Wake Forest 9/27/14 2:30 PM
Louisville
FIU 9/27/14 2:30 PM
UAB
(1) Florida State 9/27/14 2:30 PM
NC State
Miami-Ohio 9/27/14 2:30 PM
Buffalo
Colorado 9/27/14 3:00 PM
California
Louisiana Tech 9/27/14 3:00 PM
(5) Auburn
Texas 9/27/14 3:00 PM
Kansas
Temple 9/27/14 3:00 PM
Connecticut
(16) Stanford 9/27/14 3:15 PM
Washington
TX-San Antonio 9/27/14 4:00 PM
Fla Atlantic
South Alabama 9/27/14 4:00 PM
Idaho
Cincinnati 9/27/14 5:00 PM
(22) Ohio State
Rice 9/27/14 6:00 PM
Southern Miss
Missouri 9/27/14 6:00 PM
(13) So Carolina
Boise State 9/27/14 6:00 PM
Air Force
North Carolina 9/27/14 6:00 PM
Clemson
Central Mich 9/27/14 6:00 PM
Toledo
Troy 9/27/14 6:00 PM
ULM
New Mexico St 9/27/14 6:30 PM
(17) LSU
Memphis 9/27/14 6:30 PM
(10) Ole Miss
Duke 9/27/14 6:30 PM
Miami-Florida
Texas State 9/27/14 7:00 PM
Tulsa
Washington St 9/27/14 7:00 PM
Utah
(8) Notre Dame 9/27/14 7:00 PM
Syracuse
(7) Baylor 9/27/14 7:00 PM
Iowa State
UNLV 9/27/14 7:00 PM
San Diego St
Illinois 9/27/14 8:00 PM
(21) Nebraska
Oregon State 9/27/14 9:30 PM
(18) USC
Nevada 9/27/14 9:30 PM
San Jose St
Chivas USA 0 FINAL
Toronto FC 3
Toronto 40 FINAL
Brt Columbia 23
Edmonton 23 FINAL
Hamilton 25
Calgary 15 FINAL
Montreal 31
Ottawa 32 FINAL
Saskatchewan 35
Connect with twitterConnect with facebookConnect with Google+Connect with PinterestConnect with PinterestConnect with RssfeedConnect with email newsletters

ADVERTISEMENT

ADVERTISEMENT

Date/Opponent Time W L Score
2014 preseason     
Aug 8 - vs. Oakland 7 pmX10-6
Aug 16 - vs. Arizona 7:30 pmX30-28
Aug 23 - at Kansas City 7 pmX30-12
Aug 28 - at Tennessee 7 pmX19-3
2014 regular season     
Sep 7 - at St. Louis NoonX34-6
Sep 14 - vs. New England NoonX30-7
Sep 21 - at New Orleans Noon
Sep 28 - vs. Atlanta 3:25 pm
Oct 2 - at Green Bay 7:25 pm
Oct 12 - vs. Detroit Noon
Oct 19 - at. Buffalo Noon
Oct 26 - at Tampa Bay Noon
Nov 2 - vs. Washington Noon
Nov 9 - Bye
Nov 16 - at Chicago Noon
Nov. 23 - vs. Green Bay Noon
Nov. 30 - vs. Carolina Noon
Dec 7 - vs. NY Jets Noon
Dec 14 - at Detroit Noon
Dec 21 - at Miami Noon
Dec 28 - vs. Chicago Noon

ADVERTISEMENT

ADVERTISEMENT

ADVERTISEMENT

question of the day

Poll: Grade the Vikings offense

Weekly Question

ADVERTISEMENT

 
Close