The New York Times The New York Times National August 25, 2003
Search:  
Get tips on: 


Advertisement




NYT Store
Photo: Cleveland Stadium, 1931.Photo: Cleveland Stadium, 1931.
Price: $195. Learn More.


Real Estate
Sign up for E-Mail Alerts!
Receive the latest property listings in your inbox...

Sell or Rent Your Home
Post a property listing on NYTimes.com…

Find a Mover
Get instant quotes for full-service, self-service and last-minute moves...

Get Mortgage Quotes
Get instant mortgage quotes and calculate payments...




ARTICLE TOOLS
Email This Article E-Mail This Article
Printer Friendly Format Printer-Friendly Format
Most E-mailed Articles Most E-Mailed Articles
Reprints & Permissions Reprints & Permissions


The Blackout of 2003


Audio Slide Show: Voices in the Dark



READERS' OPINIONS

. Forum: Join a Discussion on Power Failure in the Northeast


TIMES NEWS TRACKER

  Topics

Alerts
Blackouts (Electrical)


Ohio


FirstEnergy Corporation



In Investigation of Blackout, New Details on Timeline

By ANDREW C. REVKIN and JAMES GLANZ

Electrical problems were percolating around northern Ohio for at least an hour before failures in transmission lines there joined a chain of events leading to North America's biggest blackout, according to new details provided by utilities to a task force investigating the event.

The information, including second-by-second data on the conditions of some lines and records of conversations among grid operators, was presented to American and Canadian government investigators at a meeting in Newark on Friday, said several people who attended the session and industry officials who were told what was discussed there.

Government investigators and industry groups would not comment on the details of the inquiry.

But all signs point to northern Ohio as the place where troubles began on Aug. 14. In particular, those signs point to the failure of two big transmission lines in suburbs south of Cleveland, at 3:06 and 3:32 p.m.

The second of those two lines went out with a bang — actually, two. The line, which like its counterpart, was owned by FirstEnergy Corporation, overheated and sagged where it bisects the village of Walton Hills, until electricity arced into nearby trees.

Marlene Anielski, the village mayor, said she was taking something out of her car at her home a quarter-mile away. She described "this big boom, a couple seconds," and then another boom. "I was the second phone call in to the police department."

She said appliances in nearby homes were smoking and a crew from Nelson Tree Service, an Ohio company that had the FirstEnergy contract to keep trees from growing toward transmission lines, was running from house to house urging people to get out. Then at 4:10 p.m., the power went out.

"I figured something bigger must be going on," Ms. Anielski said. "Then the phone calls starting coming in that New York's power was out. Detroit was out."

Ms. Anielski said she knew of no problems in the area in recent years related to the lines or nearby trees.

In the search for possible causes of the blackout, questions have been raised about everything from tree-trimming efforts to computer viruses. Early this year, a virus affected a computer system at FirstEnergy's Davis-Besse nuclear power plant, but environmental groups say the computers were not linked to reactor operations.

Many power experts say the most likely cause of the blackout was a delay in finding ways to compensate for the lost line capacity in Ohio, followed by the failures of systems or procedures meant to keep one region's power troubles from becoming everyone's problem.

An update on the status of the government investigation may be provided as early as today by the Energy Department, which is directing the analysis in partnership with the Canadian Ministry of Natural Resources.

But an Energy Department spokeswoman, Corry Schiermeyer, said that far more data had to be collected and put in sequence before any conclusions could be drawn, and that people "should not have any kind of prejudgment in the meantime."

Still, many industry officials and energy experts have already identified Ohio and the transmission territory of FirstEnergy as a prime piece in the blackout puzzle.

On Friday, American Electric Power, another utility company in Ohio, released a detailed timeline of events on its lines, which connect from the south with FirstEnergy's system. Officials at American Electric said their system, detecting growing problems to the north, automatically severed connecting lines to cut off a drain of electricity.

On Friday, American Electric officials said they were providing more information to the international task force, and they briefed regulatory agencies in states served by the company.

Electrical links between Ohio and Michigan remain another focal point in the investigation. On these lines, devices called relays are supposed to cut the power at the first sign of big fluctuations.

But investigators and experts say that some problem — perhaps faulty settings on the relays or a delay in power managers' decisions — allowed Ohio's troubles to streak into Michigan.

That is where the dominoes really started to topple, experts say. As power plants in Michigan shut down in quick succession, Michigan started draining power from Ontario, abruptly reversing what had been an outward flow of electricity toward Canada.

The other vital puzzle piece remains the capacious power lines connecting Ontario and New York. Those links shut down as New York was exporting power to Canada. The abrupt shutdown left New York's lines overloaded, prompting plants in the state to start shutting down.

Those shutdowns then caused fluctuations in the electricity that prompted more New York plants to protect themselves by cutting off from the grid. And by 4:11 p.m., communities from Walton Hills to New York City found themselves girding for a long night in the dark.

Some industry officials participating in the inquiry said the data should provide more answers once the timelines kept by different regions and companies have been synchronized.

Elected officials from Ohio to New York are clamoring for answers. The New York State Assembly plans to hold a hearing in Albany on Wednesday, the first of several on why things went wrong in most of the state.




newspaper It's easy to follow the top stories with home delivery of The New York Times newspaper. Get seven days of The Times from $2.90 a week.

That's 50% off the regular home delivery rate.




Advertiser Links

All-Inclusive Jamaica from $199 per couple

Buy Stocks for just $4 No minimums

$7 Trades at Scottrade

RELATED ARTICLES
. Utilities Divided Over Managing Power Flow (August 22, 2003) 
. Oversight Group Warned Utilities on Power Flows (August 21, 2003) 
. Energy Dept. Will Take Control of Blackout Investigation (August 20, 2003) 
. Midwest Utilities Were Warned About Pushing Limits of System (August 18, 2003) 
. Storms and Twisters Ravage the Middle West  (April 10, 1999)  $
Find more results for Blackouts (Electrical) and Ohio .

TOP NATIONAL ARTICLES
. Old ID Card Gives New Status to Mexicans in U.S.
. Technology and Brain Power Used to Tame an Aging Grid
. News of Ex-Priest's Death Evokes Range of Emotions
. 3 Schizophrenia Drugs May Raise Diabetes Risk, Study Says
. Study Spurs Hope of Finding Way to Increase Human Life