The achievement is a key predecessor for open vessel testing, which is scheduled to begin at the end of November. The achievement follows last week’s successful placement of the Unit 3 steam generator and continues positive momentum during the past few weeks. The first two sets of double-decker shield building panels were placed around the outer wall of the Unit 3 containment vessel. Following the Westinghouse bankruptcy filing on March 29, construction momentum has continued uninterrupted. Despite this, plant cool-down proceeded safely. At the same time, the electrical disturbance from the falling line striking the ground was detected by protective safeties on the Unit 2 main step-up transformer and a protective relay actuated, opening the transformer's output breaker. At 9:03 p.m., the RAT 2-B breakers in the switchyard were reset and offsite power was restored to the vital and non-vital "B" electrical trains, allowing reactor coolant pumps 2 and 4 to be restarted. Major milestones achieved at the construction site included a critical concrete 'super placement,' lasting 71 hours, for Unit 3 and the lift of the 237-ton CA03 module for Unit 4. After arriving in the port of Savannah, the steam generator was offloaded onto a specially designed railcar for the 118-mile trip to the Vogtle site. The modules, weighing 52 tons and 237 tons, respectively, are critical components and part of the In-Containment Refueling Water Storage Tank. Westinghouse purchased certain assets of the former Shaw Group from CB&I to allow the project to go forward. March - The NRC's ASLB held its hearings to review contentions on the Plant Vogtle ESP. [45] The U.S. government has given $8.3 billion of loan guarantees to help finance construction of the Vogtle reactors,[46] and a way forward to completing the plant has been agreed upon. August - The Energy Policy Act of 2005 was signed into law. In addition to providing structural support, the protective walls of CA05 will also separate various rooms in containment. The shield building will encapsulate the containment vessel and is comprised of more than 160 individual steel panels. All rights reserved. December - The Nuclear Regulatory Commission certified Westinghouse Electric Co.'s AP1000 reactor design. There are two steam generators per unit in the AP1000 design. On June 28, another key milestone was achieved with the placement of the middle containment vessel ring for Unit 4. The NRC, in its FSEIS, concluded that there are no environmental impacts that would preclude issuing the LWA and COLs for construction and operation of the proposed reactors at the site. Each generator is a vertical-shell U-tube evaporator with integral moisture separating equipment. Take a 360 degree live tour of the Vogtle construction site. Both of the Unit 4 steam generators are being prepared for delivery in the coming months. August - Plant Vogtle Units 3 and 4 received an ESP from the NRC. In 2008, both reactors were increased in power by 1.7% by an "Appendix K" uprate,[19] also called a Measurement Uncertainty Recapture (MUR) uprate. The milestone was achieved months ahead of schedule, another indicator of positive momentum on the site. One natural-draft tower and two NSCW towers serve each unit. August - Training classes began at a new state-of-the-art facility built for initial and continuing training of Vogtle units 3 and 4 employees. This key step was followed by energization of the 6.9kV switchgear and load centers. May - The Unit 4 containment vessel bottom head (CVBH) was successfully placed into that unit's nuclear island. Even though Unit 1 was offline at the time, residual heat from the natural decay of the radioactive fuel must be removed to prevent a dangerous rise in core temperature. 1. Plant Vogtle cost overruns once again an issue in Georgia PSC races Two seats are up for vote on the Georgia Public Service Commission, the body that regulates rates of … The Vogtle ESP is the first in the industry to reference a specific technology and to come with a Limited Work Authorization (LWA) which allows limited safety-related construction at the site prior to receiving the COL. July - Southern Nuclear begins training Operations instructors for Vogtle Units 3 and 4. In 2009, the Nuclear Regulatory Commission (NRC) renewed the licenses for both units for an additional 20 years[6] to 1/16/2047 for Unit 1,[7] and 2/9/2049 for Unit 2. Privacy Statement, Company Response to COVID-19 FAQ for our Business customers, Benefits of Building Energy Efficient Homes, Groundwater Monitoring and Dewatering Plant List, Georgia Power’s energy efficiency programs save customers money and help reduce impact of summer heat, Georgia Power crews scheduled to assist with Hurricane Laura recovery, Georgia Power customers to see $18 reduction on October bills, Georgia Power Prepared for Tropical Storm Zeta, Southern Company announces leadership change at Georgia Power as Paul Bowers, chairman, president and CEO of Georgia Power, announces succession plan. On Aug. 19, the second accumulator tank was successfully placed inside the Unit 3 containment vessel. Four smaller mechanical draft cooling towers provide nuclear service cooling water (NSCW) to safety and auxiliary non-safety components, as well as remove the decay heat from the reactor when the plant is offline. At 9:40 a.m., the plant operators declared a site area emergency (SAE) per existing procedures which called for an SAE whenever "vital" power is lost for more than 15 minutes. Weighing more than 2.2 million pounds, or 1,100 tons, and towering more than five stories tall, the module is the heaviest "lift" of the project to date. The ESP determined whether the site was appropriate for additional reactors, and this process is separate from the Combined Construction and Operating License (COL) application process. [3] Plant Vogtle units 3 and 4 will be the first new nuclear units built in the United States in the last three decades. Once complete, the new units will produce enough electricity to power 500,000 Georgia homes and businesses. Three other project partners—Oglethorpe Power Corp., the … [27][28] Bechtel will replace Fluor, who will no longer be involved in the project. raised more than $144,000. Measurement uncertainty recapture power uprates are less than 2 percent, and are achieved by implementing enhanced techniques for calculating reactor power. August - Vogtle Unit 4 deaerator arrives on site. The CVBH weighs more than 1.8 million pounds, or 900 tons, and is nearly 38 feet tall and 130 feet wide. On December 21, 2017, the PSC approved the continuation of construction on Units 3 and 4, with conditions that reduced the costs that can be recovered from ratepayers over the life of the project. The NRC approved Vogtle's License Amendment Request (LAR) in March 2008. In June 2016, the final reactor coolant pump for Unit 3 was received on site. Georgia Power also continues work with the project’s Co-owners (Oglethorpe Power, MEAG Power and Dalton Utilities) to complete a full-scale schedule and cost-to-complete analysis of the project. [12] Unit 4 has also seen progress with the installation of the final two "big six" structural modules. The agreement fairly balances the company's contribution with customer benefits and is expected to deliver approximately $325 million in savings to customers during the construction period, while keeping the project's overall projected rate impact to customers at 6 to 8 percent. June - Southern Nuclear cleared another hurdle in the licensing process for new units at Plant Vogtle when the Nuclear Regulatory Commission's Atomic Safety and Licensing Board issued its ruling on contentions related to the Early Site Permit (ESP) application. Once complete, the Vogtle site will produce enough safe, reliable, afford-able electricity to power 1 million Georgia homes and businesses. Officials said it was the heaviest lift ever for the Savannah port. In the event of a loss of reactor coolant, the tanks are designed to provide a high rate of coolant flow into the reactor for several minutes. March - Safety-related construction began with the first placement of backfill soil into the area excavated for Unit 3. The startup was successful. The Unit 4 Shield Building is made of steel and concrete in what is known as a steel composite design that is about 150 feet high and about three feet thick. June - Containment vessel bottom head placed into Unit 3 nuclear island. February - The condenser for Unit 3 arrives on-site in the first rail delivery of components for the Vogtle 3 and 4 project. Under the agreement, all capital costs incurred by the company up to $5.68 billion, including $3.3 billion invested through the end of 2015 and the $350 million settlement agreement with the project's contractors will be presumed to be reasonable and prudent. February - Nuclear Regulatory Commission issues Construction and Operating Licenses for Vogtle units 3 and 4. Courtesy: Georgia Power. As construction continues, Georgia Power remains focused on completing Vogtle units 3 and 4 with safety and quality as top priorities. After the power loss, EDG 1-A failed to start due to a protective safety trip. August - Southern Nuclear filed an Early Site Permit (ESP) for new units at the Plant Vogtle site. Limited construction at the new reactor sites began, with Unit 3 then expected to be operational in 2016, followed by Unit 4 in 2017, pending final issuance of the Combined Construction and Operating License by the NRC. [8][9] During Vogtle's first two units construction, capital investment required jumped from an estimated $660 million to $8.87 billion. [38] By June 2013, the construction schedule had been extended by at least 14 months. The tanks are manufactured in Italy by Mangiarotti, a manufacturer of components for nuclear plants and oil and gas drilling. In November 2016, the reactor vessel for Unit 3 was set within the nuclear island. [5] The Unit 3 shield building is now more than 80 percent complete as the construction team moves closer to completion of the protective barrier that surrounds the Unit 3 containment vessel.
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