Plan B involved cutting an opening approximately 25-feet by 27-feet through the containment concrete wall and liner above the equipment hatch as shown in Figure 3.

In 2015, the nuclear plant reached its SAFSTOR condition.

The deal was approved without the extra consumer protections requested by the Office of Public Counsel. Florida PSC approves plan to decommission Crystal River Nuclear Plant – Daily Energy Insider Florida PSC approves plan to decommission Crystal River Nuclear Plant The Florida Public Service Commission (PSC) approved the plan submitted by Duke Energy Florida to decommission the Crystal River Nuclear Plant (CR3) by 2038. This move enables active decommissioning for the power plant which has been offline since 2009 but was not officially retired until four years later. 0000008539 00000 n

But the equipment hatch was also too small for the replacement steam generators to enter intact.

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The NRC team reported that the Crystal River 3 containment experienced concrete delamination about a year after the tendons had been initially tightened.

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Duke Energy completed a transaction Thursday allowing a contractor to begin de-contaminating and dismantling the Crystal River Nuclear Plant. Greg Vaday, Atlanta Regional Office, t: (404) 730-3009, e: John Hickman, Project Manager, (t): (301) 415-3017, e.

The concrete has not yet been poured in that section of containment, so the metal reinforcing bars and horizontal tendon sleeves (the vertical rows of white dots on either side of the equipment hatch) embedded in the concrete are visible.

These tendons functioned like reinforcing bands—workers tightened, or tensioned, them to give the concrete wall additional strength against the internal pressure that could occur during an accident.
Posted in: Nuclear Power Safety The repair project ran into numerous difficulties and Embedded in the concrete walls were 5.25-inch round tendons encased within metal sleeves.

And the sequencing used to loosen the tendons prior to cutting the steam generator replacement opening resulted in high localized stresses that exacerbated the design and material conditions to cause cracking. When you visit Clarion Events (and our family of websites), we use cookies to process your personal data in order to customize content and improve your site experience, provide social media features, analyze our traffic, and personalize advertising. The owner’s decision to permanently retire rather than repair the plant without the NRC’s thumb on either side of the scales. Role of Regulation in Nuclear Plant Safety #10. This containment design was used for more than half of the PWRs operating in the United States. FAQs. 15760W. later.

0000003605 00000 n 0000009001 00000 n The company has a diverse mix of generation resources, including nuclear, coal-fired, oil- and natural gas-fired, and hydroelectric power plants. The NRC imposed no sanctions following the investigation by its Special Inspection Team.

In May 2019, Duke Energy announced a plan to decommission the Crystal River Nuclear Plant by 2027 instead of 2074 and to contract with Accelerated Decommissioning Partners, a joint venture between NorthStar Group Services and Orano USA, to perform the work.

This event reflects just right regulation by the NRC. Just The Facts The process leading up to Duke Energy’s approval process for decommissioning its retired nuclear plant started seven years ago. The facility is currently in SAFSTOR condition although they are still considering beginning active decommissioning.
The equipment hatch is wide open much of the time during Refueling mode, so having a damaged section of containment wall above that large opening did not violate regulatory requirements. Tags: crystalriver, just-right-regulation, NRC, nuclear power, nuclear power safety, The Role of Regulation in Nuclear Plant Safety, turkeypoint. 0000001303 00000 n https://www.tampabay.com/news/business/2020/04/02/federal-regulators-say-duke-energy-florida-can-decommission-nuclear-plant-faster/. Dave Lochbaum, former director of the UCS Nuclear Safety Project, is one of the nation's top independent experts on nuclear power.

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On February 5, 2013, the company announced that the reactor had been permanently shut down and would transition into decommissioning.

The approval by the Florida Public Service Commission means that Duke Energy locked in a $540 million price tag for a contractor to dismantle the nuclear portion of the plant by 2027, about 50 years sooner than scheduled.

The delamination affected about 15 inches of the 36-inch thick concrete dome, with the maximum gap between layers being about two inches wide. for the decommissioning. Discover tools and information for improving project outcomes andcatalyzing economic recovery. The team determined that the containment was damaged after the reactor entered the Refueling mode.

0000005151 00000 n Figure 6 shows that the delamination area resembled a butterfly, extending far beyond the crack around the steam generator replacement (SGR) opening. The containment at Crystal River 3 was a 3-D post-tensioned concrete cylinder with a steel liner.

In certain areas, the anchors would not hold. Economic Development Administration Representative: Unless specific costing information has been provided, decommissioning costs were derived from 2017 Decommissioning Funding Status Report. On Oct. 1, 2020, Duke Energy and Accelerated Decommissioning Partners successfully completed a transaction to start decontamination and dismantlement of the Crystal River Nuclear Plant in Citrus County, Fla., in 2020 instead of 2067 – nearly 50 years sooner than originally planned. When the cost of fixing the broken containment rose too high, the owner opted to permanently shut down the facility before its original operating license expired.

nuclear plant, property and equipment, as well as the trust fund which is paying The plant began construction of an ISFSI in 2016, and begin loading fuel in summer 2017. Workers planned to replace the steam generators during the outage. The Crystal River nuclear plant is located at Duke Energy's Crystal River Energy Complex on Florida's Gulf Coast, about 85 miles north of Tampa. Workers drilled dozens of bore holes into the containment wall supplemented by impulse response testing (essentially ultrasonic probing of the wall to look for voids within the concrete) to map out the extent of the delamination. Role of Regulation in Nuclear Plant Safety #10. The NRC dispatched a Special Inspection Team to investigate the cause and corrective actions for the concrete degradation at Crystal River 3 even though the problem had no adverse safety implications for the reactor in refueling mode.

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