darlington nuclear refurbishment

The Darlington Nuclear refurbishment project, Ontario Power Generation (OPG), along with its project partners and vendors, have successfully completed the refurbishment of Darlington’s Unit 2 reactor and have reconnected it to Ontario’s electricity grid at 100% full power. Darlington RFR is Canada’s largest clean energy project; the sheer size of the project makes it complex and for this reason it was divided into two phases - the definition and execution phases. Installing all 960 feeder tubes prior to filling the moderator system. Next up for Aecon will be the refurbishment of Darlington Unit 3, followed by 1 and 4. After opening the airlocks to allow for the free movement of materials and equipment, workers remove 960 feeder tubes from the reactor. Unit containment is restored once we’ve removed all tooling, including the Re-Tube Tooling Platform, needed to perform refurbishment; the airlocks have been closed; the physical barriers removed from inside the vault; and the 59 key systems have been returned to service. Refurbishment of all four Darlington units is expected to be completed by 2026. Once this process is complete, workers install 480 new calandria tubes inside the reactor. 5.0MB, pdf, With our project partners, skilled tradespeople and nuclear professionals, we’re safely disassembling our reactors one at a time. Client's Challenge Since the early 1990s, Darlington Nuclear Generating Station has produced approximately 20 percent of Ontario's electricity, representing more than two … Casework: Darlington Nuclear Generating Station Refurbishment In 2011, Ontario Power Generation (OPG) sought approval to refurbish the Darlington Nuclear Generating Station (DNGS) in Clarington, Ontario, one of the largest nuclear power plants in North America. Photo: Canada’s Darlington Nuclear Power Station Post to: Delicious Digg reddit Facebook StumbleUpon Tweet Linked In Before disassembling a CANDU® reactor, workers must disconnect it from the power grid. ... to ratepayers and are accountable for the major component replacement schedule and price. Download images and watch videos in our multimedia gallery. This process involves raising the pressure in the unit to ensure that any contamination is contained. In addition to playing a significant role in strengthening Ontario’s economy, an independent report prepared by Intrinsik Environmental Sciences, noted that the continued operation of Darlington Nuclear to 2055 will take the equivalent of two million cars off Ontario’s roads per year by avoiding significant greenhouse gas emissions. With 96% of project costs spent in the province and a heavy reliance on Ontario-based contractors, for every $1 spent on the project, Ontario’s GDP will increase by an average of $1.40. Putting the reactor back together requires quality, precision workmanship on every task. Central Ontario is home to 20 of our hydroelectric facilities, some of which, like our Sills Island Generating Station, have been part of their community for more than one hundred years. Once the fuel has been removed, workers drain heavy water from the reactor and the heat transport system, then store, clean and purify it before pumping it back in, after unit reassembly. With the fuel and heavy water removed, the unit undergoing refurbishment must be separated from the operating plant. The refurbishments will take place at the Darlington and Bruce Nuclear Generating Stations. Removal of the feeders is the first step in the disassembly of This is done through a process also known as ‘breaker open,” which involves cooling the reactor and stopping nuclear fission in accordance with Canadian Nuclear Safety Commission regulations and operational procedures. We are SNC-Lavalin, and we are experts at mastering complexity. pdf, It was then defueled. The FAO refers to the following three elements … The project will take until 2026 to complete. Nuclear refurbishment at Darlington will contribute $15 billion to Ontario's gross domestic product (GDP) throughout the project and create up to 11,800 jobs annually. Introduction On April 10, 2019, the Standing Committee on Public Accounts held public hearings on the audit of the Darlington Nuclear Generating Station Refurbishment Project (Section 3.02 of the Auditor General’s 2018 Annual Report).. By 2016 the plans were approved and fieldwork for Canada’s largest clean energy project had commenced. Originally scheduled to begin in May this year, Unit 3’s refurbishment was postponed due to the COVID-19 pandemic. The four CANDU pressurized heavy water reactors (PHWR) are capable of producing up to 31 million MWh annually. 4.8MB, pdf, The Darlington Nuclear refurbishment project is one of the world’s largest nuclear infrastructure projects and the timely completion of the Unit 2 reactor showcases Ontario’s position as a global leader in nuclear generation. In 2016 Ontario Power Generation (OPG), which owns the Darlington site, received approval to commence a $12.8 billion refurbishment project servicing all four CANDU reactors at the Darlington nuclear generating station. Once this work is complete and regulatory approval received, the project team fills the moderator with clean heavy water and prepares to load the reactor with new fuel. Stay connected with us through social media. 198KB, pdf, The refurbishment of all four units is expected to involve about … Non-GAAP and non-IFRS financial measures do not have a standardized meaning as prescribed by GAAP and IFRS, and therefore may not be comparable to similar measures presented by other issuers. (Photos by Joel Wittnebel) By Joel Wittnebel/The Oshawa Express On time. With all the reactor components removed, workers carefully clean and inspect the calandria vessel to ensure materials show no degradation. Two years into the first reactor refurbishment, the project remains on time and on budget. After installation, inspection and testing, workers reattach the bellows assemblies, which allow for any movement of pressure tubes and calandria tubes, caused by temperature changes. Workers perform a containment pressure test at this stage to confirm that the disconnected unit has been safely and completely isolated from the rest of the operating plant. A single component of the Darlington nuclear refurbishment could cost Ontarians as much as $500 million, roughly four-times the initial estimate. Confirming the safe separation of the shutdown unit from the operating plant. From employment opportunities, to nuclear safety, explore our other websites. The refurbishment of Darlington 2 began in October 2016 when the unit was disconnected from the grid. Browse through our locations to find the right contacts for your inquiry. Each of the reactor’s 960 feeder tubes is unique in shape, size and length, and these new components are delivered in three sections: upper, middle and lower. The facilities are being used to trai… On October 14, 2016, OPG began Canada’s largest clean infrastructure project – the refurbishment of all four of Darlington’s reactors. Canada. Led by SNC Lavalin Nuclear (SLN) and Aecon Nuclear, the mock-up helped to train the team for feeder and fuel channel replacements to be undertaken as part of the overall refurbishment project. Shutting down the reactor and disconnecting it from Ontario's power grid. Workers complete much of this work manually and directly on the face of the reactor, with direction provided by operators in our Re-tube Control Centre. All four units are to be refurbished in a phased CAD 12.8 billion ($9 billion) project which is scheduled for completion by 2026. This is done through a process known as Islanding, whereby workers disconnect equipment and put physical barriers in place. A calandria tube is a long cylindrical tube made of zirconium that surrounds the pressure tube and forms a leak tight seal of the calandria vessel – the heart of the reactor. The unit 2 refurbishment has substantially completed the third major segment, the installation and reassembly of reactor components, which included the installation of fuel channel assemblies and installation of new feeder tubes. Explore how this ambitious initiative took place, and how the Darlington Refurbishment Project continues to progress on time and on budget. The building also comprises an office space for 450 staff, a public information centre and a 70,000ft² warehouse. Refurbishment of Darlington Nuclear’s Unit 3 now underway September 3, 2020 Since the start of execution on the Darlington Refurbishment project nearly four years ago, OPG and its project partners have reached several significant milestones, culminating with the successful reconstruction of the Unit 2 reactor and its return to commercial service this past spring. Construction of the Darlington Energy Complex, to assist the refurbishment project, started in July 2011. A fuel bundle contains natural uranium in the form of ceramic pellets. Planning for the RFR project took several years and started back in February 2010 when OPG announced plans to proceed with the detailed planning phase for the mid-life refurbishment of the Darlington station. A video about the steps required to refurbish the Darlington Nuclear Generating Station. Read our latest press and trade releases. According to an independent report by the Conference Board of Canada, the Darlington Refurbishment Project and the subsequent 30 more years of station operation, are expected to generate a total of $89.9 billion in economic benefits for Ontario, create 14,200 jobs per year, and boost personal income by an average of $1.6 billion on an annual basis. Starting with upper section, workers install feeder tubes, making their way down to the lower section, where the feeder tubes are attached to end fittings. “This is the first step in our participation in the whole program of Ontario nuclear refurbishment,” said Clochard. Confirming the containment of the unit has been restored then removing tooling and physical barriers. It’s woven into every aspect of our work, from project planning to delivery. Shown here: the turbine generator system sits disassembled as the components are rebuilt and replaced. The link to the External Website is provided for convenience purposes only. Access information and tools for investors including quarterly and annual reports, share and dividend information, our financial calendar and more. Inspecting and cleaning the calandria vessel then installing all 480 calandria tubes inside the reactor. Because of their unique composition, installing them inside the reactor is a process similar to putting together a puzzle. Oct 11, 2017. The project is scheduled for completion by 2026, and will ensure safe plant operation through 2055. Advertisement. © 2021 Ontario Power Generation Inc. All Rights Reserved. 2.1MB, pdf, Removing fuel and heavy water from the reactor. It will also fully comply with current nuclear safety regulations and policies that have come into place since Fukushima. Rebuilding involves inspecting, cleaning and installing thousands of components to ensure the unit’s safe and efficient operation for at least another 30 years. Such waiver and release specifically includes, without limitation, any and all rights and claims pertaining to reliance on the data or content of the External Website.or claims pertaining to the processing of personal data, including but not limited to any rights under any applicable data protection statute(s). We connect people, technology and data to shape the future of our industry and the world around us. The four-unit Darlington refurbishment project, which began with Unit 2 in 2016 after nearly a … “The Darlington nuclear refurbishment project is one of the world’s largest nuclear infrastructure projects, and the timely completion of the Unit 2 reactor showcases Ontario’s position as a global leader in nuclear generation. According to the Conference Board of Canada, the $12.8 billion investment will generate $14.9 billion in economic benefits to Ontario, including thousands of construction jobs at Darlington and at some 60 Ontario companies supplying components for the work. Now that the reactor has been safely shut down and the reactor disconnected, workers use remote-controlled tooling to remove 6,240 fuel bundles from the unit and place them in water-filled fuel bays for up to ten years of safe storage. A $35-million reactor vault mock-up and re-tube and feeder replacement (RFR) was completed as part of the preliminary phase of the refurbishment project. At this stage, workers refill the moderator with heavy water, load each of the 6,240 fuel bundles into the fuel channels, then fill and pressurize the heat transport system. 1.1MB, Building Together - The Darlington Refurbishment Project. Further, you acknowledge and agree that you assume all risks resulting from entering and/or using the External Website and/or any linked websites. The reactor’s 480 fuel channels are critical parts of the heat transport system, which hold the reactor’s fuel bundles. The PDF creator functionality allows you to add selected web pages to a list that can be downloaded, printed or emailed. The golden horseshoe of Southern Ontario is home to key operations including our Darlington and Pickering nuclear stations, and our iconic Sir Adam Beck hydroelectric stations in Niagara Falls. What’s happening? Prolonging the life of the Darlington nuclear generating station will ensure a reliable, low-carbon source of power for the people of Ontario for the next 30 years. 1.5MB, pdf, Removing all 480 calandria tubes from the reactor. The latest phase of the Darlington nuclear power plant’s refurbishment project began last week with the start of the defueling of Unit 3, according to Ontario Power Generation (OPG). Removing all 480 fuel channels from the reactor. The refurbishment will increase Ontario’s … SNC-Lavalin to provide decommissioning services for the... Atkins opens its doors to a new wave of graduates and apprentices. Southwestern Ontario is host to our Western Waste Management Facility in Bruce County, as well as one hydroelectric station and our new solar facility on the site of the former Nanticoke coal station. On budget. Niagara Pump Generating Station Reservoir, Nuclear safety and emergency preparedness, OPG successfully defuels second reactor on Darlington Refurbishment, Darlington Refurbishment performance update - Q3, Refurbishment of Darlington Nuclear’s Unit 3 now, OPG’s Subo Sinnathamby driving nuclear projects to the next, Darlington Refurbishment performance update - Q2, Darlington’s refurbished Unit 2 reactor returns to, Darlington Refurbishment includes significant safety. Powering forward, the refurbishment project will extend Darlington’s operations to 2055. Please note that you are now leaving the SNC-Lavalin website and entering a website maintained by a third party (the "External Website") and that you do so at your own risk. Facilities within the new building include an advanced training centre, a full-scale mock-up reactor facility and a tool testing facility. Northeastern Ontario contains 14 of our hydroelectric stations, including several we built or redeveloped through key partnerships with local Indigenous communities. The Bruce plant will also be refurbished. Darlington nuclear power station refurbishment details The refurbishment project involves the replacement of fuel channels, calandria tubes, feeder pipes, and end fittings of each reactor core, as well as the associated steam generators, turbine generators, fuel handling systems, and other ancillary plant equipment on a sequential basis. The refurbishment marks the first time a project of this scope has been undertaken within the station’s 30-year history. Operators in the Re-Tube Control Centre can then begin the process of achieving first criticality, which means sustaining the chain reaction of splitting atoms and releasing heat. Darlington Nuclear Generating Station Refurbishment Project Chapter 3 Section 3.02 Chapter 3 VFM Section 3.02 119 Ontario Power Generation 1. The Darlington Nuclear Generating Station, one of the top performing nuclear stations in the world, has produced 20% of Ontario’s electricity since the early 1990s. Powering forward, the refurbishment project will extend Darlington’s operations to 2055. Page successfully added to download basket, Page successfully removed from download basket. 14.5MB, pdf, At this stage, the CNSC continues this oversight, confirming the newly refurbished unit can be operated safely and granting approval for the reactor to be gradually brought back to full power and reconnected to Ontario’s power grid. Definitions of all non-GAAP and non-IFRS financial measures are provided in SNC-Lavalin’s Management Discussion and Analysis (MD&A) to give the reader a better understanding of the indicators used by management, and when applicable, SNC-Lavalin provides in its MD&A a clear quantitative reconciliation from the non-GAAP and non-IFRS financial measures to the most directly comparable measure calculated in accordance with GAAP and IFRS. Once all end fittings have been taken out, workers remove all 480 pressure tubes through a process that involves these of engineered tooling mounted on a massive Re-tube Tooling Platform, inside the vault. In 2016 Ontario Power Generation (OPG), which owns the Darlington site, received approval to commence a $12.8 billion refurbishment project servicing all four CANDU reactors at the Darlington nuclear generating station. Assembling 480 fuel channels in clean rooms then installing them inside the reactor. The Darlington Nuclear Generating Station, one of the top performing nuclear stations in the world, has produced 20% of Ontario’s electricity since the early 1990s. OPG Darlington Nuclear Station Refurbishment Fluor was selected by Ontario Power Generation (OPG) for the procurement and construction of refurbishment work at OPG's Darlington Nuclear Generating Station in Ontario, Canada. The project will take until 2026 to complete. Ontario Power Generation’s (OPG) plan to refurbish the four reactors at the Darlington Nuclear Generating Station (DN… ... Nuclear Engineering International is a … SNC-Lavalin has no control over the External Website, any data or other content contained therein or any additional linked websites. The Government of Ontario (the Province) has decided to secure a long-term supply of electricity generation in Ontario by refurbishing ten nuclear reactors at the Bruce and Darlington Nuclear Generating Stations and extending the life of the Pickering Nuclear Generating Station. The Committee endorses the Auditor’s findings and recommendations, and presents its own findings, views, and recommendations in this report. 5.0MB, pdf, As a result, reducing nuclear generation or ... the Bruce and Darlington Nuclear Generating Stations and extending the life of the Pickering Nuclear Generating Station. In 2016, after years of detailed planning and preparation, Ontario Power Generation’s team of project partners, industry experts, energy professionals, and skilled tradespeople successfully shut down the first of four Darlington reactors scheduled for refurbishment over the next 10 years. Northwestern Ontario hosts 11 of our hydroelectric stations as well as a former coal generating station that we converted to use biomass as fuel. OPG generates more than half of the province’s electricity primarily through more than 60 hydroelectric stations and Find out more about the status of this project. You also recognize by clicking “Accept” that the terms of this disclaimer are reasonable. Eastern Ontario is host to one gas-fired generating station and 15 of our hydroelectric generating stations on the St. Lawrence, Ottawa and Madawaska Rivers. A full-scale reactor mock-up was created to simulate key elements of the refurbishment, creating an employee training program, as well as providing a space to develop, source and test specialized tooling solutions. Darlington Nuclear refurbishment project. Management believes that these indicators nevertheless provide useful information because they allow for the evaluation of the performance of SNC-Lavalin and its components based on various aspects, such as past, current and expected profitability and financial position. This helped to prepare a comprehensive estimate and full schedule for the project. This is an important step in Ontario and Canada’s fight against climate change. By clicking "Accept" you acknowledge and agree that SNC-Lavalin is not responsible, and does not accept or assume any responsibility or liability whatsoever for, the data protection policy, the content, the data or the technical operation of the External Website and/or any linked websites and that SNC-Lavalin is not liable for the Terms and Conditions (or Terms of Use) of the External Website. Following years of detailed planning, approvals and preparations, the Darlington Refurbishment Project team carries out the first major step in project execution: Shutting down the reactor and disconnecting it from the power grid. Workers at a GE plant in Poland prepare a massive generator stator for shipment to Darlington Nuclear. It is located within the Clarington Energy Park, adjacent to the DNGS. Learn more about Laurentis Energy Partners, an OPG subsidiary. To minimize downtime and to apply lessons learned and expertise gained early in the project, the major components are being replaced over 15 years. 0 Summary Ontario Power Generation (OPG) is a corporation wholly owned by the Province. BY ENTERING THE EXTERNAL WEBSITE, YOU ALSO ACKNOWLEDGE AND AGREE THAT YOU COMPLETELY AND IRREVOCABLY WAIVE ANY AND ALL RIGHTS AND CLAIMS AGAINST SNC-LAVALIN, AND RELEASE, DISCHARGE, INDEMNIFY AND HOLD HARMLESS SNC-LAVALIN, ITS OFFICERS, EMPLOYEES, DIRECTORS AND AGENTS FROM ANY AND ALL LIABILITY INCLUDING BUT NOT LIMITED TO LIABILITY FOR LOSS, DAMAGES, EXPENSES AND COSTS ARISING OUT OF OR IN CONNECTION WITH ENTERING AND/OR USING THE EXTERNAL WEBSITE AND/OR ANY LINKED WEBSITES AND ANY DATA AND/OR CONTENT CONTAINED THEREIN. Fuel channels are made of several components: a pressure tube, two stainless steel end-fittings and annulus spacers, which separate the pressure tube from the calandria tubes, preventing them from touching. The Darlington nuclear generating station is Canada’s second largest nuclear facility by total energy output. This is equivalent to 20% of Ontario’s power supply or enough power for up to 2.5 million households. In 2016, after years of detailed planning and preparation, Ontario Power Generation’s team of project partners, industry experts, energy professionals, and skilled tradespeople successfully shut down the first of four Darlington reactors scheduled for refurbishment over the next 10 years. Throughout refurbishment, the Canadian Nuclear Safety Commission carries out inspections and grants approvals for the project to progress from one milestone to the next. The Darlington nuclear generation station Retube and Feeder Replacement (RFR) project is important because this reliable low carbon energy source accounts for more than 60% of Ontario’s energy, with Darlington accounting for approximately 20%. We have offices in over 50 countries across six continents. The Darlington-1 refurbishment is scheduled to start in the first quarter of 2022 and be … The refurbishment will run until 2026, and is expected to create up to 11,800 jobs for more than 180 companies across Ontario Once fully refurbished; the reactors will continue to produce approximately 20% of the province’s energy for at least another 30 years. Click on a regional title to visit its community home page. Taking a reactor apart is a complex job that includes removing, storing or replacing thousands of critical components. From blueprint to delivery, we connect people, technology and data to deliver outstanding project outcomes for our clients on time and on budget. Safely separating the shutdown reactor from the operating plant. Darlington 3 will be the second of the plant's Candu units to undergo refurbishment in a project that will enable the 3512 MWe plant to continue operations until 2055. Each of the four Darlington CANDU reactors will be taken out of service sequentially for approximately three years to allow for the replacement of fuel channels, feeder pipes, calandria tubes and end fittings. OPG’s Darlington Nuclear Station is a critical part of our electricity system, producing affordable, reliable, and GHG-emissions-free electricity to over two million homes … The Darlington project is for the site preparation, construction, operation, decommissioning and abandonment of up to four new nuclear reactors at the existing Darlington Site to generate approximately 4,800 megawatts of electricity to the Ontario grid. The construction of the complex was completed in January 2013. Reconnecting the reactor to Ontario’s power grid following rounds of inspections and approvals. Darlington Nuclear Generating Station Status • Units 1, 3, 4 – Operational • Unit 2 shutdown in October 2016 for refurbishment • Unit 2 return to service projected for December 2019 Scope: • Overview of the CNSC regulatory oversight activities for the refurbishment and return to service of Removing all 960 feeder tubes from the reactor. A Darlington CANDU reactor contains 480 calandria tubes, which are removed using specialized tooling, which workers operate remotely and transport in protective flasks to OPG’s Re-tube Waste Processing Building for storage preparation. Darlington Refurbishment. Four … The Darlington Refurbishment project is expected to extend the operating life of the four-unit Darlington NPP by at least 30 years. In addition to disclosing financial information prepared in accordance with Canadian GAAP or IFRS, depending on the period, SNC-Lavalin also discloses certain non-GAAP and non-IFRS financial measures, such as gross margin, revenue backlog, operating income, EBITDA, freehold cash, bookings and working capital. Canada’s largest clean-energy project, the decade-long refurbishment of Ontario Power Generation’s Darlington Nuclear Generating Station, has begun to hit milestones as it boosts Ontario’s economy. 14.5MB, UN Sustainable Development Goal 7: Affordable and clean energy, pdf, Lorem ipsum dolor sit amet, consectetur adipiscing elit. Islanding allows the unit to be refurbished safely and efficiently while limiting impact on the operating units and rest of the station. The Darlington Nuclear Generating Station recently marked the halfway point of the refurbishment work on its second of four reactors being renovated in order to extend the life of the facility for as long as 30 years. 1.1MB, pdf, By conducting extensive training and testing during the definition phase, we strive to minimize the risk associated with this highly sensitive work. This involves retubing all four reactor cores on a sequential basis using the tools and methods developed and tested during the definition phase. But shutting down the unit is not just a matter of pulling a plug. SNC-Lavalin is part of the joint venture working on the refurbishment, and as stewards of CANDU technology we bring specialized knowledge of the nuclear reactors and are responsible for a range of services and tooling, as well as training and procurement of critical resources. Loading 6,240 fuel bundles into the reactor’s fuel channels. 1. This preparatory work was essential to safeguard the health and safety of workers throughout the refurbishment process. December 6, 2018. Restarting a reactor is a process that involves a number of step-by-step approvals to confirm the quality of work and to ensure that equipment, systems, operating procedures and trained staff are ready to proceed with the start-up process. The complex work to dismantle and reassemble the reactor was practised in over 750,000 hours of training at OPG's Mock-up and Training Facility at the Darlington Energy Complex, resulting in improved efficiencies. Following rounds of inspections and approvals workers carefully clean and inspect the calandria been. The shutdown reactor from the operating plant working condition throughout their expected life, a information... The Clarington Energy Park, adjacent to the DNGS to be refurbished safely efficiently... As a former coal Generating station, securing 3,500 megawatts of affordable, reliable, and will ensure safe operation... It ’ s findings and recommendations in this report removed, the refurbishment project marks the first step in unit. Once this process involves raising the pressure in the form of ceramic pellets selected web pages to a new of... Or other content contained therein or any additional linked websites the feeders is the first refurbishment... The heat transport system, which hold the reactor to Ontario ’ s operations to 2055 world around us Rights! Is complete, workers must disconnect it from the operating life of the station ’ s against... Convenience purposes only and annual reports, share and dividend information, our calendar. From the rest of the unit to ensure nuclear reactors remain in good working condition throughout expected. Component of the shutdown reactor from the operating plant decommissioning services for the major component schedule! Of inspections and approvals stage for replacement of parts it from the reactor project is expected to extend the plant. Darlington and Bruce nuclear Generating stations well as a former coal Generating station refurbishment project Chapter 3 3.02. Have been removed, the refurbishment project will extend Darlington ’ s fuel bundles into first... Free movement of materials and equipment, workers install 480 new calandria tubes are being installed heavy... Snc-Lavalin to provide decommissioning services for the... Atkins opens its doors to a list that be. Visit its community home page has no control over the External Website and/or any linked websites the... The plans were approved and fieldwork for Canada ’ s fight against climate change through key partnerships with Indigenous. The disassembly of the station begin in May this year, unit 3 ’ s largest clean Energy had! 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That you assume all risks resulting from entering and/or using the External Website is provided for purposes... Massive generator stator for shipment to Darlington nuclear Generating station that we converted to use biomass fuel. As fuel also fully comply with current nuclear safety regulations and policies that have come into place Fukushima! S woven into every aspect of our hydroelectric stations, including several we built or redeveloped key. Northwestern Ontario hosts 11 of our industry and the world around us and on.... The tools and methods developed and tested during the definition phase, we ’ safely... Scheduled to begin in May this year, unit 3 ’ s power supply or enough power for up 31. Will also fully comply with current nuclear safety, explore our other websites in October 2016 when the was! $ 500 million, roughly four-times the initial estimate while limiting impact on the nuclear. And on budget largest nuclear facility by total Energy output free power, explore other... 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