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By Timothy B. Wheeler and Baltimore Sun reporter | February 24, 2010
Federal inspectors are at Calvert Cliffs nuclear power plant this week to investigate an unexpected shutdown of both reactors last week, which a plant spokesman said apparently was triggered by melting snow leaking through the plant's roof. The Nuclear Regulatory Commission sent a five-member "special inspection team" Monday to the 1,750-megawatt plant near Lusby in Calvert County, which is owned by Constellation Energy. It's expected to remain there all week, NRC spokeswoman Diane Screnci said.
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By Timothy B. Wheeler, The Baltimore Sun | August 8, 2014
The operators of Calvert Cliffs nuclear power plant have been cited for a miscalculation that federal safety inspectors said might have triggered an unnecessary evacuation or other emergency response to an insignificant radiation leak. The Nuclear Regulatory Commission said Friday it had preliminarily classified the mistake by Exelon Generation Co. as one of "low to moderate" safety significance. But an NRC spokesman said it could lead to increased federal scrutiny of the twin-reactor plant in Lusby, 70 miles south of Baltimore.
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NEWS
September 22, 2010
The September 15 letter about the removal of fossils from Calvert Cliffs by Phyllis Bonfield and Marcia Seifert (Readers respond) provides a good opportunity to clarify how the Calvert Marine Museum goes about that work. Their concerns are varied and will be addressed in the order in which they appear in their entry. Their first concern was for our safety, which is a legitimate concern and one that we take great care to address. The cliff in the immediate area where this skull was removed is approximately 20 feet high.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | May 5, 2014
The Calvert Cliffs nuclear power plant restarted its reactor that automatically shut down last week after a malfunction at the Southern Maryland facility. Operator Exelon Corp. said Monday that the Unit 1 reactor returned to full power at 9 a.m. Sunday. The facility's second reactor continued to run during the outage, one of three incidents in the last eight months in which one or both of the units had unplanned shutdowns. The malfunction that caused Unit 1 to power down Thursday morning happened during electrical breaker testing, Exelon said.
NEWS
July 8, 2010
Max Obuszewski is both inaccurate and misleading in his complaints about Rep. Steny H. Hoyer's support for the new Calvert Cliffs reactor ("Readers Respond," July 6). It is untrue that "the insurance companies refuse to issue policies for nuclear power plants." There is a consortium of insurance companies, the American Nuclear Insurers, which provides the insurance mandated by the Price-Anderson Act, which requires the owner of each reactor to carry $110 million of insurance to cover the clean-up and liability costs of an accident at any other reactor in the U.S. (if a company owns multiple reactors, it must carry that multiple of $110 million)
NEWS
By Ellen Vancko | March 9, 2011
Gov. Martin O'Malley should reject Electricité de France's (EDF) proposal to force Maryland residents to underwrite construction of a third nuclear reactor at Calvert Cliffs in Southern Maryland. Why? Because it makes no economic sense. Little more than a year ago, the Maryland Public Service Commission approved EDF's acquisition of Constellation Energy's nuclear assets. But the commission wisely conditioned its approval on a series of protections that would ensure that Baltimore Gas & Electric's customers would not only be held harmless from any future bad business decisions by Constellation (BGE's parent company)
NEWS
By Frank D. Roylance, The Baltimore Sun | September 14, 2010
The ancient "whale" skull discovered eroding from the clay at Calvert Cliffs last spring is actually that of an extinct species of dolphin. Scientists and volunteers extracted the 16 million-year-old fossil from the cliffs over the weekend. They revealed what paleontologist Stephen Godfrey of the Calvert Marine Museum tentatively identified Tuesday as a Eurhinodelphinid , an odd-looking marine mammal with a long, slender upper snout and a lower jaw about half that length. "It looks a little like a swordfish," he said.
NEWS
By Johanna Neumann | October 14, 2010
The news that EDF Group still wants to pursue building a new reactor after Constellation Energy pulled out of their partnership is unwelcome news for taxpayers. Just days after Constellation canceled the project because they couldn't stomach the financial risk, EDF continues to seek to shift this risk onto U.S. taxpayers, even though better energy solutions abound. Now is the time for Maryland's leaders to launch a renewed push for a smarter and cleaner energy future. Constellation walked away from its plans to build a new reactor at Calvert Cliffs because it was unwilling to shoulder the huge financial risk involved in building an expensive new reactor.
BUSINESS
March 24, 2010
A reactor at the Calvert Cliffs nuclear power plant has resumed operations after a planned refueling outage, owner Constellation Energy Nuclear Group announced Tuesday. In February, one reactor shut down after an electrical malfunction caused by melting snow on a leaky roof, triggering the other to shut down as well, a Constellation spokesman said at the time. One reactor returned to service March 1 after confirming there were no safety issues, but the second reactor was scheduled to be shut down for refueling.
NEWS
October 11, 2010
Jay Hancock's blaming the Calvert Cliffs 3 setback on the failed passage of a climate bill doesn't show his usual careful analysis ("Lack of climate change bill helped kill new reactor," Oct. 10). Tampering with market pricing of energy sources because of unsubstantiated climate models is extremely risky. Hard empirical evidence shows climate changes prior to, and therefore uncaused by, fossil-fuel usage. No one has yet justified their claims that present climate change is uniquely man-made.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | May 1, 2014
A malfunction at the Calvert Cliffs nuclear power plant caused an automatic shutdown of one of the two reactors there Thursday morning, the latest in a series of issues at the Southern Maryland facility. Chicago-based Exelon Corp., which operates Calvert Cliffs, said the malfunction happened during electrical breaker testing. The Unit 1 reactor shut down as a result at about 10:15 a.m. "All safety systems responded as designed and the plant came off-line as expected," Exelon said in a statement.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | March 14, 2014
Federal inspectors found no violations as they delved into the reactor shutdowns in January at Calvert Cliffs in Southern Maryland, the Nuclear Regulatory Commission said Friday. An electrical malfunction caused both of the nuclear power plant's reactors to shut down during a snow and ice storm in January, sending natural gas prices soaring as energy providers rushed to make up for the lost electricity production. The commission sent a three-person special inspection team to the plant the following week.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | January 27, 2014
The Nuclear Regulatory Commission announced Monday that it is conducting a special inspection at the Calvert Cliffs nuclear power plant in Southern Maryland after an electrical malfunction caused the two reactors there to shut down. The plant, which restarted both reactors over the weekend, suffered the shutdown after snow and ice during a storm Jan. 21 apparently affected a ventilation louver filter and caused a short circuit. After the electrical supply system shut down, so did several plant systems and components that rely on electricity, the nuclear regulatory agency said Monday.
FEATURES
Tim Wheeler | October 18, 2013
A new government report raises questions about the consistency of federal nuclear power plant oversight, noting regional disparities in the frequency with which plants - including Maryland's Calvert Cliffs - have been cited for safety problems or violations. The review released this week by the Government Accountability Office , an investigative arm of Congress, found significant differences across the country in how often the Nuclear Regulatory Commission reported finding low-risk safety problems and low-level violations at the nation's 62 operating nuclear plants.  While there were not similar regional disparities in the number of serious violations reported, the differences in identifying minor problems could affect the NRC's ability to head off safety lapses before they get worse.
FEATURES
Tim Wheeler | September 6, 2013
The operators of Calvert Cliffs nuclear power plant in southern Maryland shut down one of its two reactors Thursday after a control rod assembly malfunctioned during testing, federal safety regulators announced. The shutdown occurred without complications and did not pose any risks for the public or plant staff, Nuclear Regulatory Commission spokesman Neil Sheehan said. Unit 2 was powered down around 5 p.m. Thursday after operators checking a control rod "received some indication that electrical maintenance was needed on one of the assemblies," said Kory Raftery, plant spokesman.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | July 30, 2013
French energy firm Electricite de France outlined an exit strategy Tuesday from its stake in three of Exelon's nuclear power plants, including Calvert Cliffs in Southern Maryland. Both companies disclosed that EDF has an option to sell its 49.99 percent stake in Constellation Energy Nuclear Group to Exelon - which owns the rest - for fair market value between 2016 and 2022. Constellation, bought by Exelon last year, also worked out a deal with EDF to transfer the power plants' licenses to its parent.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | July 29, 2013
Regulators said Monday that they will hear about the performance of Constellation Energy Nuclear Group power plants next week - including Calvert Cliffs in Southern Maryland - in a public meeting in Baltimore. Officials from Exelon-owned Constellation are scheduled to talk to Nuclear Regulatory Commission staffers about activities and licensing actions regarding its nuclear plants. The meeting is to begin 8 a.m. Monday at the Royal Sonesta Harbor Court Baltimore hotel, 550 Light St. A part of the meeting will be behind closed doors, as officials discuss security issues, but the rest will be open to the public, the regulators said.
BUSINESS
By Jamie Smith Hopkins, The Baltimore Sun | July 17, 2013
A new report suggests that a substantial number of U.S. nuclear reactors — including one or both at Calvert Cliffs in Southern Maryland — are at risk of early retirement. Mark Cooper with the Vermont Law School's Institute for Energy and the Environment said a third of the country's nuclear fleet have a number of risk factors, largely economic, that could lead to their owners' deciding to shut them down before their licenses expire. A single problem, such as a costly repair, could be enough to push any of the reactors over the brink, he said.
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