Skip to main content

New Welding Process Saves Calvert Cliffs $17.5 Million

NEI’s Top Industry Practice Awards recognize innovation in the nuclear energy industry. Presented at NEI’s annual conference, the awards honor accomplishments that help the industry improve safety, streamline processes and increase efficiency.

In a special series of articles this week, our publication Nuclear Energy Overview highlights the challenges and successes of five winners.


The staff at the Calvert Cliffs nuclear energy facility developed a new welding process that not only has improved efficiency at the plant but also saved millions of dollars.

The project earned a team from the plant the B. Ralph Sylvia Best of the Best Award, which honors the highest achievement among all TIP Award winners.



Led by Lennie Daniels, a senior project manager at Constellation Energy Nuclear Group, the team streamlined the welding required to install pressurizer lower head heater nozzles and level nozzles.

The results of the new process, known as “Mini-ID Temper Bead Welding,” are significant. For example, the volume of weld material needed was cut by 90 percent, and the time spent welding one installation dropped from 18 hours to four hours. Putting the new welding process in practice at Calvert Cliffs ultimately saved the company $17.5 million and 583 critical path hours during its maintenance outage.

Before replacing nozzles in 119 high-radiation-dose locations, the team put in plenty of time up front to optimize the entire process. With the welding to be performed on a platform eight feet in diameter 30 feet in the air, the team at the Maryland facility rehearsed the procedures on a full-scale mockup.

“It was while practicing the entire thing from start to finish that we could find those little … kinds of things that you’d never, ever think of,” said Daniels.

Daniels cited solutions like building a stairwell so that crews didn’t need to carry heavy tools up and down a ladder and changing small components of a work platform to make it maneuverable.

“It was the little user-friendly enhancements that went a long way to help us be successful,” he said.

Comments

Unknown said…
We were proud to support the Calvert Cliffs team with our innovative technology. Details on the tech via links in this release: http://us.areva.com/EN/home-2290/areva-inc-areva-technology-recognized-as-bestofthebest.html

Popular posts from this blog

Fluor Invests in NuScale

You know, it’s kind of sad that no one is willing to invest in nuclear energy anymore. Wait, what? NuScale Power celebrated the news of its company-saving $30 million investment from Fluor Corp. Thursday morning with a press conference in Washington, D.C. Fluor is a design, engineering and construction company involved with some 20 plants in the 70s and 80s, but it has not held interest in a nuclear energy company until now. Fluor, which has deep roots in the nuclear industry, is betting big on small-scale nuclear energy with its NuScale investment. "It's become a serious contender in the last decade or so," John Hopkins, [Fluor’s group president in charge of new ventures], said. And that brings us to NuScale, which had run into some dark days – maybe not as dark as, say, Solyndra, but dire enough : Earlier this year, the Securities Exchange Commission filed an action against NuScale's lead investor, The Michael Kenwood Group. The firm "misap...

Wednesday Update

From NEI’s Japan micro-site: NRC, Industry Concur on Many Post-Fukushima Actions Industry/Regulatory/Political Issues • There is a “great deal of alignment” between the U.S. Nuclear Regulatory Commission and the industry on initial steps to take at America’s nuclear energy facilities in response to the nuclear accident in Japan, Charles Pardee, the chief operating officer of Exelon Generation Co., said at an agency briefing today. The briefing gave stakeholders an opportunity to discuss staff recommendations for near-term actions the agency may take at U.S. facilities. PowerPoint slides from the meeting are on the NRC website. • The International Atomic Energy Agency board has approved a plan that calls for inspectors to evaluate reactor safety at nuclear energy facilities every three years. Governments may opt out of having their country’s facilities inspected. Also approved were plans to maintain a rapid response team of experts ready to assist facility operators recoverin...

Nuclear Utility Moves Up in Credit Ratings, Bank is "Comfortable with Nuclear Strategy"

Some positive signs that nuclear utilities can continue to receive positive ratings even while they finance new nuclear plants for the first time in decades: Wells Fargo upgrades SCANA to Outperform from Market Perform Wells analyst says, "YTD, SCG shares have underperformed the Regulated Electrics (total return +2% vs. +9%). Shares trade at 11.3X our 10E EPS, a modest discount to the peer group median of 11.8X. We view the valuation as attractive given a comparatively constructive regulatory environment and potential for above-average long-term EPS growth prospects ... Comfortable with Nuclear Strategy. SCG plans to participate in the development of two regulated nuclear units at a cost of $6.3B, raising legitimate concerns regarding financing and construction. We have carefully considered the risks and are comfortable with SCG’s strategy based on a highly constructive political & regulatory environment, manageable financing needs stretched out over 10 years, strong partners...