Constellation Energy Group completes steam generator replacement outage at Calvert Cliffs Nuclear Power Plant


BALTIMORE, April 25, 2003 -- Constellation Energy Group completed its Unit 2 steam generator replacement and refueling outage at Calvert Cliffs Nuclear Power Plant in 66 days, 32 days ahead of schedule, placing the plant near a world record for steam generator replacement.

This 66 day outage was completed in 58 fewer days than a similar outage completed at Calvert Cliff's Unit 1 in 2002.

"The steam generator replacement at Calvert Cliffs was accomplished with an unprecedented level of efficiency, safety, and overall operational excellence," said Mayo A. Shattuck III, Chairman, President and CEO of Constellation Energy Group. "Our crisp execution enabled us to complete this far ahead of schedule. This was much more than a routine refueling outage and major equipment replacement. It was truly an example of what can be achieved with high performance teamwork and meticulous planning."

In addition, the outage placed Constellation Energy among U.S. industry leaders for superior welding quality on the steam generator. Calvert Cliffs is believed to be the only nuclear power plant to complete welding with zero rejectable indications shown in radiography testing (RT) on the steam generator girth, and reactor coolant system "hot" and "cold" legs.

With zero rejectable indications, no weld repairs were required in these locations, cutting outage duration time. The most significant, the girth weld, covered 52 feet in circumference per steam generator. Calvert Cliffs uses two steam generators in each unit. Each girth weld required 2,200 pounds of weld material and was completed in only 8.25 days.

During the outage, Constellation Energy also inspected the reactor vessel head, including all nozzles. A bare metal visual inspection and ultrasonic testing showed the head to be in good condition, with no indication of cracking or boric acid damage. Calvert Cliffs was one of the first U.S. nuclear power plants to inspect its reactor vessel head after the U.S. Nuclear Regulatory Commission issued an inspection order Feb. 11, 2003.

In addition to normal refueling activities, Constellation Energy employees and more than 1,000 contractors replaced Unit 2's two main step-up transformers, modified fuel thimbles, and conducted routine maintenance work on the unit's secondary systems, including the turbine and intake structure.

"Many of our facilities are experiencing top quartile or top decile performance when compared to similar facilities," according to Michael J. Wallace, President of Constellation Generation, Constellation Energy Group's power generation line of business. "Performance at Calvert Cliffs in this outage, drawing on resources across our fleet, is indicative of the talent of our team in construction, operations and maintenance of power plants. This talent will serve us well as we continue to add facilities to our fleet."

Calvert Cliffs Vice President Peter Katz attributed the outage's success to the outage team's ability to work cohesively and to incorporate lessons learned from across the industry. "We built a strong team to focus specifically on the outage, and we spent months prior to the outage training, qualifying personnel and testing equipment and techniques," Katz said. Constellation Energy owns generating facilities in thirteen states, totaling 12,300 megawatts.

Constellation Energy Group, a Fortune 500 company based in Baltimore, is a competitive supplier of electricity to large commercial and industrial customers. Constellation markets energy nationally and manages the associated risks. It owns and operates a diversified fleet of generation plants throughout the United States. It also delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), our regulated utility in Central Maryland. In 2002, the combined revenues of our integrated energy company totaled $4.7 billion.

Sponsored by FLSmidth

Related Articles

Exelon to buy Integrys retail electricity company for $60mn

Exelon Corp. (NYSE: EXC) and Integrys Energy Group (NYSE: TEG) have signed a definitive agreement for Exelon to purchase Integrys Energy Services for $60 million plus adjusted net working capital at the time of closing.

PsomasFMG Constellation Exelon distributed generation solar on-site California

Companies to develop 50-MW of distributed solar projects in CA

PsomasFMG and Constellation agreed to develop up to 50-MW of solar distributed generation projects for schools and municipalities in California through the end of 2015.

Follow Power Engineering on Twitter

Latest News

Monticello nuclear power plant has increased NRC oversight

NRC continues oversight of Monticello nuclear power plant

The U.S. Nuclear Regulatory Commission (NRC) said it will continue increased oversight of the...
Hinkley Point C nuclear power plant lawsuit Germany

German co-op to sue over Hinkley Point C nuclear incentives

A German energy cooperative said it will sue the European Commission over incentives for a nu...
University of Iowa plans steam generating power plant

University of Iowa proposes $75 million power plant

University of Iowa officials are ready to begin planning a steam production plant on the west...
Saudi Arabia South Korea nuclear power cooperation deal memorandum of understanding

Saudi Arabia, S. Korea sign nuclear power deal

Saudi Arabia and South Korea signed a deal to build nuclear power plants in the Kingdom.

W.Va. gov signs bill letting lawmakers OK state carbon plan

Democratic Gov. Earl Ray Tomblin has signed a bill letting lawmakers approve state plans to m...
 Nuclear company Areva in turmoil after billions in losses

Nuclear company Areva in turmoil after billions in losses

Nuclear manufacturer Areva has announced a 4.8 billion euro loss for 2014, more than its enti...
 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

Power Engineering Current Issue

12/01/2014
Volume 118, Issue 12
1412pe-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

Power Industry Wire News

CRMI Retools Transition Team; Senior Management Changes Announced; New Stock Transfer Agent Appointed

CRMI Retools Transition Team; Senior Management Changes Announced; New Stock Transfer A...

GulfSlope Energy to Present at the 27th Annual Roth Conference

GulfSlope Energy to Present at the 27th Annual Roth Conference

Will the U.S. Shale Boom Fuel Asia's Economic Future and Europe's Energy Security?

Will the U.S. Shale Boom Fuel Asia's Economic Future and Europe's Energy Security?

American Dryer's eXtremeAir Cold Plasma Clean(R) Technology Kills Influenza A Virus

American Dryer's eXtremeAir Cold Plasma Clean(R) Technology Kills Influenza A Virus

LIG Assets, Inc. Takes Position in North Dakota Oil Leases

LIG Assets, Inc. Takes Position in North Dakota Oil Leases

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 >>