Cook Nuclear 1 return-to-service date expected in November

24 October 2008 -- Initial inspections and disassembly of the main turbine are complete at American Electric Power's 1,030 MW Cook Nuclear Plant Unit 1, out of service since Sept. 20 after vibrations -- likely caused by a broken low pressure turbine blade -- damaged the main turbine.

The turbine rotors and other major components have been shipped to the original manufacturers for engineering analysis and repair.

AEP expects to have a return-to-service schedule and cost estimates for the nuclear power unit by late November.

The vibration also caused a hydrogen leak, resulting in a fire in the main generator that caused minimal damage to the facility, which is located in Michigan.

Cook Unit 1 has three low-pressure turbines manufactured by Siemens and one General Electric high-pressure turbine and main generator.

The low-pressure turbine rotors, casings and other support equipment were shipped to the Siemens turbine facility in Charlotte, N.C., to determine whether the components will be repaired or replaced.

The high-pressure turbine rotor was shipped to a General Electric facility in Chicago and is undergoing similar assessments.

Disassembly of the main generator is also complete. The generator rotor will be shipped to the GE facility in Chicago for testing and repair.

Initial electrical testing of the generator rotor and stator has not detected any major issues. Generator parts, such as high voltage bushings and current transformers damaged during the event have been ordered.

At the site, AEP personnel have developed a schedule for the remaining inspections and completion of repairs on other plant equipment such as associated turbine piping and insulation, turbine bearings and turbine plant motors and pumps.

In addition, cleaning of broken insulation in the turbine building, water from fire suppression and oil released from the turbine lube oil system during the event will be done. The oil was contained within plant systems during the event resulting in no impact to the environment.

Siemens and GE are working to deliver parts and perform repairs. Once parts delivery and repair estimates are completed, they will be integrated into the plant schedule and AEP will release a return to service timeline and total cost estimate.

Stories of interest:

AEP's Cook Nuclear Plant Unit 2 briefly enters emergency plan for internal filter leak

AEP's Cook Nuclear Plant Unit 1 briefly enters emergency plan during refueling

Sponsored by FLSmidth

Related Articles

Fuel Tech receives air pollution control contracts worth $3.6Mn

Fuel Tech Inc. has received multiple air pollution control (APC) contracts, worth approximately $3.6 million, from customers in China, Europe and the U.S.

Duke Energy completes ash excavation at W.S. Lee Steam Station

Duke Energy (NYSE: DUK) has submitted filings, to state regulators, outlining additional ash excavation plans for its W.S. Lee Steam Station in Belton, South Carolina.

Follow Power Engineering on Twitter

Latest News

 Electric utility Dominion flexes political muscles in Virginia

Electric utility Dominion flexes political muscles in Virginia

Virginia's 2015 legislative session was a good one for energy giant Dominion Resources Inc. (...
Callaway Energy Center's Replacement Reactor Vessel Closure Head Project

[Image Gallery] Callaway Energy Center Nuclear Power Upgrade Project

 DOE to help tribes advance onsite, renewable energy projects

DOE to help tribes advance onsite, renewable energy projects

DOE announced the third round of START Renewable Energy Project Development Assistance, which...
Report: 2014 was the best year for utility-scale solar power

Report: 2014 was the best year for utility-scale solar power

With more than 3.7 GW installed, 2014 was the best year yet for utility-scale solar power ins...
CHP: Energy Independence Offers a Competitive Edge

[Image Gallery]

Best Boiler Cleaning Practices

[Image Gallery]

 FirstEnergy Nuclear Operating Co. elects new president, CNO

FirstEnergy Nuclear Operating Co. elects new president, CNO

FirstEnergy Nuclear Operating Co. (FENOC), a subsidiary of FirstEnergy Corp. (NYSE: FE),...
 Enbridge’s Texas wind project reaches commercial operation

Enbridge’s Texas wind project reaches commercial operation

Enbridge’s 110-MW Keechi Wind Project has reached commercial operations in Jack County, Texas.

Power Engineering Current Issue

03/01/2014
Volume 118, Issue 3
1403PE-cover

Products Showcase

Dynamic Fluoride Ion cleaning DFIC of industrial natural gas turbines Hi-Tech Furnace Systems

Dynamic Fluoride Ion Cleaning of IGT Parts

The Dynamic Fluoride Ion Cleaning (DFIC) Process from Hi-Tech Furnace Systems is able to clean deep, narrow cracks of oxides by cycling between negative, atmospheric, and positive pressure.

Archived Articles

2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013

Buyers Guide Categories

Buyers Guide Product Listings

Predictive Maintenance

IPS field service technicians use state-of-the-...

Mitsubishi Gas Turbines

Mitsubishi's advanced turbine technology includ...

Condition Monitoring

TIGER® Monitoring System automates the knowledg...

Turbine Services Limited

Turbine Services Limited, a wholly owned subsid...

Power Industry Wire News

Western Gas Announces Acquisition and 2015 Outlook

Western Gas Announces Acquisition and 2015 Outlook

Thinnest, Rugged Laptop With 15" Display

Thinnest, Rugged Laptop With 15" Display

BioCNG, LLC Announces Expansion of St. Landry Parish Solid Waste District BioCNG(TM) System to Include Mother-Daughter Fuel Station

BioCNG, LLC Announces Expansion of St. Landry Parish Solid Waste District BioCNG(TM) Sy...

Letter From CGE Energy President Bryan Zaplitny

Letter From CGE Energy President Bryan Zaplitny

UGE International and OTEPI Renewables Selected to Supply Solar Energy Systems for Retail Chain's Portfolio of Facilities

UGE International and OTEPI Renewables Selected to Supply Solar Energy Systems for Reta...

Power Engineering

Article Archives for Power Engineering Magazine

Continuing Education

Professional Development Hours

To access a course listing associated to a specific topic listed below, click on the topic of choice from the list below.

Latest Energy Jobs

View more Job Listings >>