AP1000

The AP1000 is a nuclear power plant designed and sold by Westinghouse Electric Company. The plant is a pressurized water reactor with improved use of passive nuclear safety and many design features intended to lower its capital cost and improve its economics.

Computer generated image of AP1000

The design traces its history to the System 80 design, which was produced in various locations around the world. This initially led to the AP600 concept, with a smaller 600 to 700 MWe output, but this saw limited interest. In order to compete with other designs that were scaling up in size in order to improve capital costs, the design re-emerged as the AP1000 and found a number of design wins at this larger size.

Six AP1000s are currently in operation or under construction. Four are located at two sites in China, two at Sanmen Nuclear Power Station and two at Haiyang Nuclear Power Plant. Two are under construction at the Vogtle Electric Generating Plant in the US, while a further two at the Virgil C. Summer Nuclear Generating Station were cancelled in 2017. As of 2019, all four Chinese plants have completed construction and are at various stages of connecting to the grid. Construction at Vogtle has suffered numerous delays and Unit 3 is now expected to be completed in 2021. Cost overruns at Vogtle and the cancellation of Summer led to Westinghouse's bankruptcy in 2017.

The first AP1000 began operations in China at Sanmen, where Unit 1 became the first AP1000 to achieve criticality in June 2018,.[1] and was connected to the grid the next month. Further builds in China will be based on the modified CAP1400 design.

History

Previous work

The AP1000 design traces its history to two previous designs, the AP600 and the System 80.

The System 80 design was created by Combustion Engineering and featured a two-loop cooling system with a single steam generator paired with two reactor coolant pumps in each loop that makes it simpler and less expensive than systems which pair a single reactor coolant pump with a steam generator in each of two, three, or four loops. Built to the extent of three reactors in the US and another four in South Korea, it was among the most successful Generation II+ designs. ABB Group bought Combustion Engineering in 1990 and introduced the System 80+, with a number of design changes and safety improvements. As part of a series of mergers, purchases and divestitures by ABB, in 2000 the design was purchased by Westinghouse Electric Company, who had itself been purchased in 1999 by British Nuclear Fuels Ltd (BNFL).

Through the 1990s, Westinghouse had been working on a new design known as the AP600 with a design power of about 600 MWe. This was part of the Department of Energy's Advanced Light Water Reactor program that worked on a series of Generation III reactor designs. In contrast to Generation II designs, the AP600 was much simpler, with a huge reduction in the total number of parts, and especially pumps. It was also passively safe, a key feature of Gen III designs.[2]

The AP600 was at the small end of the reactor scale. Smaller plants are periodically introduced because they can be used in a wider variety of markets where a larger reactor is simply too powerful. The downside of such designs is that the construction time, and thus cost, does not differ significantly to larger designs, so these smaller designs often have less attractive economics. The AP600 addressed this through modular construction and aimed to go from first concrete to fuel load in 36 months. In spite of these attractive features, Westinghouse had no sales of the AP600.[2]

With the purchase of the company by BNFL and its merger with ABB, a design combining the features of the System 80+ with the AP600 started as the AP1000. BNFL in turn sold Westinghouse Electric to Toshiba in 2005.

AP1000

In December 2005, the Nuclear Regulatory Commission (NRC) approved the final design certification for the AP1000.[3] This meant that prospective US builders could apply for a Combined Construction and Operating License before construction starts, the validity of which is conditional upon the plant being built as designed, and that each AP1000 should be identical. Its design is the first Generation III+ reactor to receive final design approval from the NRC.[4] In 2008 China started building four units of the AP1000's 2005-design.

In December 2011, the NRC approved construction of the first US plant to use the design.[5] On February 9, 2012 the NRC approved the construction of two new reactors.[6]

In 2016 and 2017 cost overruns constructing AP1000 plants in the U.S. caused Westinghouse's owner Toshiba to write down its investment in Westinghouse by "several billion" dollars.[7] On 14 February 2017 Toshiba delayed filing financial results, and Toshiba chairman Shigenori Shiga, formerly chairman of Westinghouse, resigned.[8][9][10] On March 24, 2017, Toshiba announced that Westinghouse Electric Company will file for Chapter 11 bankruptcy because of US$9 billion of losses from nuclear reactor construction projects, which may impact the future of the AP1000.[11] Westinghouse emerged from bankruptcy in August 2018.[12]

DateMilestone
January 27, 2006NRC issues the final design certification rule (DCR)
March 10, 2006NRC issues revised FDA for Revision 15 of the Westinghouse design
May 26, 2007Westinghouse applies to amend the DCR (Revision 16)
September 22, 2008Westinghouse updated its application
October 14, 2008Westinghouse provides a corrected set for Revision 17 of the design
December 1, 2010Westinghouse submits Revision 18 of the design
June 13, 2011Westinghouse submits Revision 19 of the design
December 30, 2011NRC issues the final DC amendment final rule

Design specifications

The AP1000 is a pressurized water reactor[3] with two cooling loops, planned to produce a net power output of 1,117 MWe.[13] It is an evolutionary improvement on the AP600,[4] essentially a more powerful model with roughly the same footprint.[3]

A design objective was to be less expensive to build than other Generation III reactor designs, by both using existing technology, and needing less equipment than competing designs that have three or four cooling loops. The design decreases the number of components, including pipes, wires, and valves. Standardization and type-licensing should also help reduce the time and cost of construction. Because of its simplified design compared to a Westinghouse generation II PWR, the AP1000 has:[13]

  • 50% fewer safety-related valves
  • 35% fewer pumps
  • 80% less safety-related piping
  • 85% less control cable
  • 45% less seismic building volume

The AP1000 design is considerably more compact in land usage than most existing PWRs, and uses under a fifth of the concrete and rebar reinforcing of older designs.[13] Probabilistic risk assessment was used in the design of the plants. This enabled minimization of risks, and calculation of the overall safety of the plant. According to the NRC, the plants will be orders of magnitude safer than those in the last study, NUREG-1150. The AP1000 has a maximum core damage frequency of 5.09 × 10−7 per plant per year.[14] Used fuel produced by the AP1000 can be stored indefinitely in water on the plant site.[15] Aged used fuel may also be stored in above-ground dry cask storage, in the same manner as the currently operating fleet of US power reactors.[13]

Power reactors of this general type continue to produce heat from radioactive decay products even after the main reaction is shut down, so it is necessary to remove this heat to avoid meltdown of the reactor core. In the AP1000, Westinghouse's Passive Core Cooling System uses a tank of water situated above the reactor. When the passive cooling system is activated, the water flows by gravity to the top of the reactor where it evaporates to remove heat. The system uses multiple explosively-operated and DC operated valves which must operate within the first 30 minutes. This is designed to happen even if the reactor operators take no action.[16] The electrical system required for initiating the passive systems doesn't rely on external or diesel power and the valves don't rely on hydraulic or compressed air systems.[3][17] The design is intended to passively remove heat for 72 hours, after which its gravity drain water tank must be topped up for as long as cooling is required.[13]

Revision 15 of the AP1000 design has an unusual containment structure which has received approval by the NRC, after a Safety Evaluation Report,[18] and a Design Certification Rule.[19] Revisions 17, 18, and 19 were also approved.[20]

Design disputes

In April 2010, some environmental organizations called on the NRC to investigate possible limitations in the AP1000 reactor design. These groups appealed to three federal agencies to suspend the licensing process because they believed containment in the new design is weaker than existing reactors.[21]

In April 2010, Arnold Gundersen, a nuclear engineer commissioned by several anti-nuclear groups, released a report which explored a hazard associated with the possible rusting through of the containment structure steel liner. In the AP1000 design, the liner and the concrete are separated, and if the steel rusts through, "there is no backup containment behind it" according to Gundersen.[22] If the dome rusted through the design would expel radioactive contaminants and the plant "could deliver a dose of radiation to the public that is 10 times higher than the N.R.C. limit" according to Gundersen. Vaughn Gilbert, a spokesman for Westinghouse, has disputed Gundersen's assessment, stating that the AP1000's steel containment vessel is three-and-a-half to five times thicker than the liners used in current designs, and that corrosion would be readily apparent during routine inspection.[22]

Edwin Lyman, a senior staff scientist at the Union of Concerned Scientists, has challenged specific cost-saving design choices made for both the AP1000 and ESBWR, another new design. Lyman is concerned about the strength of the steel containment vessel and the concrete shield building around the AP1000, claiming its containment vessel does not have sufficient safety margins.[23]

John Ma, a senior structural engineer at the NRC was quoted on his stance about the AP1000 nuclear reactor.[23]

In 2009, the NRC made a safety change related to the events of September 11, ruling that all plants be designed to withstand the direct hit from a plane. To meet the new requirement, Westinghouse encased the AP1000 buildings concrete walls in steel plates. Last year Ma, a member of the NRC since it was formed in 1974, filed the first "non-concurrence" dissent of his career after the NRC granted the design approval. In it Ma argues that some parts of the steel skin are so brittle that the "impact energy" from a plane strike or storm driven projectile could shatter the wall. A team of engineering experts hired by Westinghouse disagreed...[23]

In 2010, following Ma's initial concerns, the NRC questioned the durability of the AP1000 reactor's original shield building in the face of severe external events such as earthquakes, hurricanes, and airplane collisions. In response to these concerns Westinghouse prepared a modified design.[24] This modified design satisfied the NRC, with the exception of Ma, hence the "non-concurrence". In contrast to the NRC's decision, Ma believed that computer codes used to analyze the modified design were not precise enough and some of the materials used were too brittle.[25]

A US consultant engineer has also criticized the AP1000 containment design arguing that, in the case of a design-basis accident, it could release radiation; Westinghouse has denied the claim.[26] The NRC completed the overall design certification review for the amended AP1000 in September 2011.[27]

In May 2011, US government regulators found additional problems with the design of the shield building of the new reactors. The chairman of the Nuclear Regulatory Commission said that: computations submitted by Westinghouse about the building's design appeared to be wrong and "had led to more questions."; the company had not used a range of possible temperatures for calculating potential seismic stresses on the shield building in the event of, for example, an earthquake; and that the commission was asking Westinghouse not only to fix its calculations but also to explain why it submitted flawed information in the first place. Westinghouse said that the items the commission was asking for were not "safety significant".[28]

In November 2011, Arnold Gundersen published a further report on behalf of the AP1000 Oversight Group, which includes Friends of the Earth and Mothers against Tennessee River Radiation. The report highlighted six areas of major concern and unreviewed safety questions requiring immediate technical review by the NRC. The report concluded that certification of the AP1000 should be delayed until the original and current “unanswered safety questions” raised by the AP1000 Oversight Group are resolved.[29]

In 2012, Ellen Vancko, from the Union of Concerned Scientists, said that "the Westinghouse AP1000 has a weaker containment, less redundancy in safety systems, and fewer safety features than current reactors".[30] In response to Ms. Vancko's concerns, climate policies author and retired nuclear engineer Zvi J. Doron, replied that the AP1000's safety is enhanced by fewer active components, not compromised as Ms. Vancko suggests.[30] As in direct contrast to currently operating reactors, the AP1000 has been designed around the concept of passive nuclear safety. In October 2013, Li Yulun, a former vice-president of China National Nuclear Corporation (CNNC), raised concerns over the safety standards of the delayed AP1000 third-generation nuclear power plant being built in Sanmen, due to the constantly changing, and consequently untested, design. Citing a lack of operating history, he also questioned the manufacturer's assertion that the AP1000 reactor's "primary system canned motor pumps"[31] were "maintenance-free" over 60 years, the assumed life of the reactor and noted that the expansion from 600 to 1,000 megawatts has not yet been commercially proven.[32]

Chinese design extensions

In 2008 and 2009, Westinghouse made agreements to work with the Chinese State Nuclear Power Technology Corporation (SNPTC) and other institutes to develop a larger design, the CAP1400 of 1,400 MWe capacity, possibly followed by a 1,700 MWe design. China will own the intellectual property rights for these larger designs. Exporting the new larger units may be possible with Westinghouse's cooperation.[33][34]

In September 2014, the Chinese nuclear regulator approved the design safety analysis following a 17-month review.[35] In May 2015 the CAP1400 design passed an International Atomic Energy Agency's Generic Reactor Safety Review.[36]

In December 2009, a Chinese joint venture was set up to build an initial CAP1400 near the HTR-PM at Shidao Bay Nuclear Power Plant.[33][37] In 2015, site preparation started, and approval to progress was expected by the end of the year.[38][39] In March 2017, the first CAP1400 reactor pressure vessel passed pressure tests.[40]

In February 2019, the Shanghai Nuclear Engineering Research & Design Institute announced that it had begun the conceptual design process for the CAP1700.[41]

Construction plans

China
Sanmen Nuclear Power Plant, the world's first AP1000, was commissioned in 2018.

Four AP1000 reactors were constructed in China, at Sanmen Nuclear Power Plant in Zhejiang, and Haiyang Nuclear Power Plant in Shandong.[42] The Sanmen unit 1 and unit 2 AP1000s were connected to the grid on 2 July 2018 and 24 August 2018 respectively.[43] Haiyang 1 started commercial operation on October 22, 2018,[44] Haiyang 2 on January 9, 2019.[45]

In 2014, China First Heavy Industries manufactured the first domestically produced AP1000 reactor pressure vessel, for the second AP1000 unit of Sanmen Nuclear Power Station.[46]

The first four AP1000s to be built are to an earlier revision of the design without a strengthened containment structure to provide improved protection against an aircraft crash.[47] China had officially adopted the AP1000 as a standard for inland nuclear projects.[48] But following Westinghouse's bankruptcy in 2017, decided in 2019 to build the domestically designed Hualong One rather than the AP1000 at Zhangzhou.[49]

Nevertheless as of 2020 site preparations have been done for Haiyang, Lufeng, Sanmen, and Xudabao for the construction of additional eight AP1000.

India
See also: India–United States Civil Nuclear Agreement

In June 2016, the US and India agreed to build six AP1000 reactors in India as part of civil nuclear deal signed by both countries.[50] Westinghouse's parent company Toshiba decided in 2017 to withdraw from the construction of nuclear power plants, following financial difficulties, leaving the proposed agreement in doubt.[51] During a visit to India in February 2020 by U.S. President Donald Trump, Westinghouse was expected to sign a new agreement with state-run Nuclear Power Corporation of India for the supply of six nuclear reactors. However, because of disagreements over liability and layout, this did not take place. [52][53].

Turkey
Main article: Nuclear_energy_in_Turkey

In October 2015 it was announced that technology for the İğneada Nuclear Power Plant in Turkey will come from US based firm Westinghouse Electric Company in the form of two AP1000 and two CAP1400.[54]

United Kingdom

In December 2013, Toshiba, through its Westinghouse subsidiary, purchased a 60% share of NuGeneration, with the intention of building three AP1000s at Moorside near the Sellafield nuclear reprocessing site in Cumbria, England, with a target first operation date of 2024.[55]

On 28 March 2017, the Office for Nuclear Regulation (ONR, UK) issued a Design Acceptance Confirmation for the AP1000 design, stating that 51 issues identified in 2011 had received an adequate response.[56][57] However, the following day the designer, Westinghouse, filed for Chapter 11 bankruptcy in the U.S. because of $9 billion of losses from its nuclear reactor construction projects, mostly the construction of four AP1000 reactors in the U.S.[58] In 2018, following an unsuccessful attempt to sell NuGeneration Toshiba decided to liquidate the company and abandon the project. [59][60]

United States

Two reactors are being constructed at the Vogtle Electric Generating Plant In the state of Georgia (Units 3 & 4).[61]

In South Carolina, two units were being constructed at the Virgil C. Summer Nuclear Generating Station (Units 2 & 3).[62] The project was abandoned in July 2017, 4 years after it began, due to Westinghouse's recent bankruptcy, major cost overruns, significant delays, and other issues.[63] The project's primary shareholder (SCANA) initially favored a plan to abandon development of Unit 3, while completing Unit 2. The plan was dependent on approval of a minority shareholder (Santee Cooper). Santee Cooper's board voted to cease all construction resulting in termination of the entire project.

All four reactors were identical and the two projects ran in parallel, with the first two reactors (Vogtle 3 and Summer 2) planned to be commissioned in 2019 and the remaining two (Vogtle 4 and Summer 3) in 2020.[64][65] After Westinghouse filed for bankruptcy protection on March 29, 2017, the construction has stalled.

On April 9, 2008, Georgia Power Company reached a contract agreement with Westinghouse and Shaw for two AP1000 reactors to be built at Vogtle.[66] The contract represents the first agreement for new nuclear development since the Three Mile Island accident in 1979.[67] The license request for the Vogtle site is based on revision 18 of the AP1000 design.[68] On February 16, 2010, President Obama announced $8.33 billion in federal loan guarantees to construct the two AP1000 units at the Vogtle plant.[69] The cost of building the two reactors is expected to be $14 billion.[70]

Environmental groups opposed to the licensing of the two new AP1000 reactors to be built at Vogtle filed a new petition in April 2011 asking the Nuclear Regulatory Commission's commission to suspend the licensing process until more is known about the evolving Fukushima I nuclear accidents.[71] In February 2012, nine environmental groups filed a collective challenge to the certification of the Vogtle reactor design and in March they filed a challenge to the Vogtle license. In May 2013, the U.S. Court of Appeals ruled in favor of the Nuclear Regulatory Commission (NRC).

In February 2012, the US Nuclear Regulatory Commission approved the two proposed reactors at the Vogtle plant.[72]

For VC Summer, a delay of at least one year and extra costs of $1.2 billion were announced in October 2014, largely due to fabrication delays. Unit 2 was then expected to be substantially complete in late 2018 or early 2019, with unit 3 about a year later.[73]

In October 2013, US energy secretary Ernest Moniz announced that China was to supply components to the US nuclear power plants under construction as part of a bilateral co-operation agreement between the two countries. Since China's State Nuclear Power Technology Corporation (SNPTC) acquired Westinghouses's AP1000 technology in 2006, it has developed a manufacturing supply chain capable of supplying international power projects. Industry analysts have highlighted a number of problems facing China's expansion in the nuclear market including continued gaps in their supply chain, coupled with Western fears of political interference and Chinese inexperience in the economics of nuclear power.[74]

On July 31, 2017, after an extensive review into the costs of constructing Units 2 and 3, South Carolina Electric and Gas decided to stop construction of the reactors at VC Summer and will file a Petition for Approval of Abandonment with the Public Service Commission of South Carolina.[75]

Operations

In March 2019 Sanmen Unit 2 was shut down because of a reactor coolant pump[31] defect. A replacement pump has been shipped from the U.S. by Curtiss-Wright. There have been previous problems with these pumps, with several pumps returned from China. The pumps are the largest hermetically sealed pumps used in a nuclear reactor. Westinghouse and Curtiss-Wright are in a financial dispute over responsibility for the costs of pump delivery delays.[76][77]

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See also

References
  1. "Chinese AP1000s pass commissioning milestones". www.world-nuclear-news.org. 22 June 2018. Retrieved 23 June 2018.
  2. Gangloff, W. Westinghouse AP600 Advanced Nuclear Plant Design (PDF) (Technical report). IAEA.
  3. T.L. Schulz (2006). "Westinghouse AP1000 advanced passive plant". Nuclear Engineering and Design. 236 (14–16): 1547–1557. CiteSeerX 10.1.1.175.1734. doi:10.1016/j.nucengdes.2006.03.049.
  4. "AP 1000 Public Safety and Licensing". Westinghouse. 2004-09-13. Archived from the original (web) on 2007-08-07. Retrieved 2008-01-21.
  5. Wald, Matthew L. (2011-12-22). "N.R.C. Clears Way for Nuclear Plant Construction". The New York Times.
  6. "First new nuclear reactors OK'd in over 30 years". CNN. 2012-02-09.
  7. Mochizuki, Takashi. "Toshiba Expects Write-Down of as Much as Several Billion Dollars". Wall Street Journal. Retrieved 28 December 2016.
  8. Makiko Yamazaki, Taiga Uranaka (14 February 2017). "Delays, confusion as Toshiba reports $6.3 billion nuclear hit and slides to loss". Reuters. Retrieved 14 February 2017.
  9. "Toshiba chairman quits over nuclear loss". BBC News. 14 February 2017. Retrieved 14 February 2017.
  10. Karishma Vaswani (14 February 2017). "Toshiba: Why troubled Japanese firms survive". BBC News. Retrieved 14 February 2017.
  11. Fuse, Taro (24 March 2017). "Toshiba decides on Westinghouse bankruptcy, sees $9 billion in charges: sources". Reuters. Retrieved 25 March 2017.
  12. "Westinghouse emerges from Chapter 11 - World Nuclear News". www.world-nuclear-news.org. Retrieved 27 August 2018.
  13. Adrian Bull (16 November 2010), "The AP1000 Nuclear Power Plant - Global Experience and UK Prospects" (PDF), Westinghouse UK, Nuclear Institute, archived from the original (presentation) on 22 July 2011, retrieved 14 May 2011
  14. Westinghouse AP 1000 Step 2 PSA Assessment
  15. Westinghouse certain of safety, efficiency of nuclear power, Pittsburgh Post-Gazette, March 29, 2009
  16. "UK AP1000 Pre-Construction Safety Report" (PDF). UKP-GW-GL-732 Revision 2 explains the design of the reactor safety systems as part of the process of seeking approval for construction in the UK. Westinghouse Electric Company. Archived from the original (PDF) on 2011-07-17. Retrieved 2010-02-23.
  17. R.A. and Worrall, A. “The AP1000 Reactor the Nuclear Renaissance Option.” Nuclear Energy 2004.
  18. "NRC: Issued Design Certification - Advanced Passive 1000 (AP1000)". www.nrc.gov.
  19. "Issued Design Certification - Advanced Passive 1000 (AP1000), Rev. 15 Design Certification Rule for the AP1000 Design".
  20. "Design Certification Application Review - AP1000 Amendment".
  21. "Groups say new Vogyle Reactors need study". August Chronicle. Archived from the original on 2011-07-07. Retrieved 2010-04-24.
  22. Matthew L. Wald. Critics Challenge Safety of New Reactor Design New York Times, April 22, 2010.
  23. Piore, Adam (June 2011). "Nuclear energy: Planning for the Black Swan". Scientific American.
  24. Robynne Boyd. Safety Concerns Delay Approval of the First U.S. Nuclear Reactor in Decades. Scientific American, July 29, 2010.
  25. Matthew L. Wald (March 2011). "Reactor Design Edges Toward Approval, but Not Without Complaints". The New York Times Company. Retrieved 15 May 2014.
  26. AP1000 containment insufficient for DBA, engineer claims Archived June 13, 2011, at the Wayback Machine Nuclear Engineering International, 29 April 2010.
  27. ACRS Concludes AP1000 Maintains Robustness of Previously Certified Design and is Safe Archived October 8, 2011, at the Wayback Machine Westinghouse. Retrieved 2011-11-04.
  28. Matthew L. Wald, Washington DC, “Regulators Find Design Flaws in New Reactors” New York Times, 20 May 2011.
  29. “Fukushima and the Westinghouse-Toshiba AP1000: A Report for The AP1000 Oversight Group” Arnie Gundersen, November 10, 2011
  30. "Sunday Dialogue: Nuclear Energy, Pro and Con". New York Times. February 25, 2012.
  31. "The world's largest canned motor pump". Nuclear Engineering International. 1 January 2013. Retrieved 23 July 2019.
  32. "China nuclear plant delay raises safety concern" Eric Ng, 7 October 2013, published in South China Morning Post
  33. "Nuclear Power in China". World Nuclear Association. 2 July 2010. Archived from the original on 31 July 2010. Retrieved 18 July 2010.
  34. Lin Tian (27 June 2013). "CAP 1400 Design & Construction" (PDF). SNPTC. IAEA. Retrieved 20 September 2016.
  35. "CAP1400 preliminary safety review approved". World Nuclear News. 9 September 2014. Retrieved 10 September 2014.
  36. "Large-scale Chinese reactor design passes IAEA safety review". World Nuclear News. 5 May 2016. Retrieved 20 September 2016.
  37. "New reactor design taking shape in China". World Nuclear News. 15 January 2014. Retrieved 16 January 2014.
  38. "China looks forward to reactor firsts". World Nuclear News. 14 September 2015. Retrieved 24 September 2015.
  39. Liao Liang (September 2015). Introduction of CAP1400 (PDF). SNERDI (Report). IAEA. Retrieved 24 February 2016.
  40. "CAP1400 reactor vessel passes pressure tests". World Nuclear News. 22 March 2017. Retrieved 22 March 2017.
  41. "上海核工院召开专家技术咨询会". 上海核电办公室. Retrieved 24 August 2019.
  42. "Second Summer AP1000 under construction". World Nuclear News. 6 November 2013.
  43. "Second Sanmen AP1000 connected to grid". World Nuclear News. 24 August 2018. Retrieved 27 August 2018.
  44. "China's Haiyang-1 Becomes Second Westinghouse AP1000 to Begin Commercial Operation".
  45. "Fourth Chinese AP1000 enters commercial operation". World Nuclear News. 9 January 2019. Retrieved 9 January 2019.
  46. "China produces first AP1000 vessel". World Nuclear News. 11 June 2014. Retrieved 6 August 2014.
  47. Mark Hibbs (April 27, 2010), "Pakistan Deal Signals China's Growing Nuclear Assertiveness", Nuclear Energy Brief, Carnegie Endowment for International Peace, archived from the original on 17 January 2011, retrieved 25 February 2011
  48. Li Qiyan (September 11, 2008). "U.S. Technology Picked for Nuclear Plants". Caijing. Archived from the original on 2008-10-15. Retrieved 2008-10-29.
  49. "Permits issued for construction of new Chinese plant". World Nuclear News. 15 October 2019. Retrieved 15 October 2019.
  50. IANS (8 June 2016). "N-joy: US firm to finally start work on nuclear power plants in India". Business Standard India – via Business Standard.
  51. Chakraborty, Nitya (10 February 2017). "India-US N-deal Under Threat". Millinium Post. Retrieved 24 February 2017.
  52. "Exclusive: Westinghouse set to sign pact with Indian firm for nuclear reactors during Trump visit". 20 February 2020. Retrieved 1 March 2020.
  53. "NPCIL-Westinghouse deal: Still many differences to resolve". 27 February 2020. Retrieved 8 March 2020.
  54. "Turkey Plans to Build Nuclear Power Plant Close to Border with Bulgaria". novinite.com. 2015-10-14. Retrieved 2020-07-12.
  55. "First AP1000 at Moorside online by 2024, Westinghouse says". Nuclear Engineering International. 14 January 2014. Retrieved 15 January 2014.
  56. "AP1000 design completes UK regulatory assessment". World Nuclear News. 30 March 2017. Retrieved 8 April 2017.
  57. "New nuclear power stations: Generic Design Assessment: Design Acceptance Confirmation for the AP1000® Reactor" (PDF). ONR. 28 March 2017. Retrieved 8 April 2017.
  58. "Westinghouse files for bankruptcy". Nuclear Engineering International. 29 March 2017. Retrieved 4 April 2017.
  59. Vaughan, Adam (8 November 2018). "UK nuclear power station plans scrapped as Toshiba pulls out". The Guardian. Retrieved 24 November 2018.
  60. "Toshiba Nugen Liquidation Announcement" (PDF). Toshiba Corporation. Retrieved 9 November 2018.
  61. Southern Company. "Plant Vogtle 3 and 4". Retrieved 2017-08-29.
  62. Westinghouse (2013). "AP1000 Construction Project Updates - VC Summer". Archived from the original on 2013-10-19.
  63. "Scana to evaluate Summer options". www.world-nuclear-news.org. 30 March 2017. Retrieved 11 April 2018.
  64. SCANA (2013). "Nuclear Financial Information".
  65. "The Augusta Chronicle: Local & World News, Sports & Entertainment in Augusta, GA". The Augusta Chronicle.
  66. Terry Macalister (10 April 2008). "Westinghouse wins first US nuclear deal in 30 years". The Guardian. London. Archived from the original on 11 April 2008. Retrieved 2008-04-09.
  67. "Georgia Power to Expand Nuclear Plant". Associated Press. Archived from the original on 2008-04-13. Retrieved 2008-04-09.
  68. "NRC: Combined License Application Documents for Vogtle, Units 3 and 4 Application". NRC. Archived from the original on 2011-07-21. Retrieved 2011-03-11.
  69. "Obama Administration Announces Loan Guarantees to Construct New Nuclear Power Reactors in Georgia". The White House Office of the Press Secretary. Archived from the original on 2010-05-01. Retrieved 2010-04-30.
  70. Rob Pavey (May 11, 2012). "Price of Vogtle expansion could increase $900 million". The Augusta Chronicle. Retrieved July 25, 2012.
  71. Rob Pavey (April 6, 2011). "Groups want licensing of reactors suspended". Augusta Chronicle.
  72. "NRC Approves Vogtle Reactor Construction". Nuclear Street. Retrieved 2012-02-09.
  73. "Cost of Summer AP1000s increases". World Nuclear News. 3 October 2014. Retrieved 6 October 2014.
  74. “China set to supply components to US nuclear power plants.” Lucy Hornby (Beijing) and Ed Crooks (New York), Financial Times, 30 October 2013 “Analysis - China needs Western help for nuclear export ambitions” David Stanway (Beijing) Reuters, 17 December 2013
  75. "Terms of Service Violation". www.bloomberg.com.
  76. "US-designed Chinese nuclear reactor forced to shut by pump defect". Platts. S&P Global. 14 March 2019. Retrieved 23 July 2019.
  77. "Curtiss-Wright Provides Update on AP1000 Reactor Coolant Pumps". Business Wire. 1 April 2019. Retrieved 23 July 2019.
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