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發表人 nicenter 於 2018/11/19 9:34:29 (4 人讀取)

PRISM selected for US test reactor programme


Idaho National Laboratory (INL) has selected GE Hitachi Nuclear Energy's (GEH) PRISM technology to support the US Department of Energy's Versatile Test Reactor (VTR) programme. The project is looking at what would be needed to establish a reactor-based fast-spectrum neutron irradiation capability for the USA by 2026.




GEH's PRISM (Image: GEH)

GEH has been subcontracted by INL and will work with Bechtel to advance the design and cost estimates for a VTR based on PRISM. A VTR is needed for the development of innovative nuclear fuels, materials, instrumentation and sensors, and the project will help inform a DOE decision about whether to construct a sodium-cooled test reactor.


Working in an INL-led team, GEH engineers will adapt the company's sodium-cooled reactor design to meet the needs of a test reactor for research and development purposes, INL said.


Bechtel is to perform conceptual design of the non-nuclear facilities surrounding the test reactor. The work will be carried out under contract to Battelle Energy Alliance, INL's management and operating contractor.


The VTR would provide a reactor-based source of the fast neutrons needed to test advanced reactor technology, fuels and related materials. Only a few capabilities are currently available for testing fast neutron reactor technology world-wide, and none in the USA. The VTR programme was authorised under the Nuclear Energy Innovation Capabilities Act, which was signed into law in September. INL on 4 October announced USD3.9 million in funding for 13 university-led projects to develop the instrumentation and tools needed to monitor and conduct experiments in the proposed test reactor.


INL’s Kemal Pasamehmetoglu, executive director of VTR, said the USA's "aggressive" schedule for establishing such capability means it is necessary to leverage an existing and mature sodium-cooled fast reactor design that can be modified to meet the needs of a VTR.


"Having a timely and detailed conceptual design is critical to generating an accurate cost and schedule estimate, which will then be key to DOE’s decision on whether to move forward in 2020," he said.


GEH President and CEO Jay Wileman described the VTR as "a vital and strategic project" for the USA's advanced reactor industry. "The mature PRISM technology is ideally suited to meet the VTR mission needs," he said.


Peggy McCullough, general manager of Bechtel's Nuclear, Security, and Operations business line, said the project was "extremely important" for the science community, industry, regulators, and the future of nuclear energy research.


"Advanced reactors hold great promise but their components need the proper testing before they can be licensed and used in energy-producing reactors. That's what the Versatile Test Reactor will provide," she said.


The PRISM reactor builds on the EBR-II, an integral sodium-cooled fast reactor prototype that operated at Argonne National Laboratory from 1963 to 1994. It is the only sodium-cooled reactor to date to have successfully completed the US Nuclear Regulatory Commission pre-application review process. For power generation, GEH envisages power blocks of two 311 MWe modules, each with one steam generator, that collectively drive one turbine generator.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/PRISM-selected-for-US-test-reactor-programme

發表人 nicenter 於 2018/11/19 9:27:09 (3 人讀取)

UK HPR1000 moves to next design assessment stage


The UK's Office for Nuclear Regulation (ONR) and the Environment Agency (EA) have completed "initial high-level scrutiny" of the UK HPR1000 reactor design. The design now moves onto the third of four stages in the Generic Design Assessment (GDA) process.




A rendering of the UK HPR1000 (Image: ONR)

The UK HPR1000 is the Hualong One design that General Nuclear Services (GNS) - a subsidiary of EDF and China General Nuclear (CGN) - proposes to use at a prospective new nuclear power plant in Bradwell, England.


The GDA process has a number of steps, with the technical assessment becoming increasingly more detailed. Step 2 is the first in which the regulators assess the acceptability of safety, security and environmental protection of the design.


The ONR and EA said they had not identified in Step 2 any fundamental issues to prevent a plant based on the UK HPR1000 from being built in the UK.


Nuclear regulator ONR is tasked with assessing the fundamental safety and security aspects of the design. It said that, together with GNS, it had completed the preparatory work necessary to enable commencement of Step 3. It noted, however, that there is still a considerable amount of work that will need to be undertaken by GNS going forward in the GDA process, "requiring significant resources across all of the topic areas" for the company.


GNS said progression of the UK HPR1000 to the next step of the GDA process follows a year of intensive work by teams in the UK, China and France, during which time the UK public has had the opportunity to comment on the design details shared during Step 2. Step 3 will move to deeper analysis of the design of the UK HPR1000 nuclear technology, and will continue to be open to public comment, it said.


"This is an important milestone for the GDA project, involving many thousands of hours of engineering work, and is a great demonstration of the effectiveness of the CGN and EDF joint venture in the UK," said Zhu Minhong, managing director of GNS. "I would encourage the public to continue to engage with the process and provide feedback on the next level of detail that is being provided as part of Step 3."


The regulators aim to complete the GDA of the UK HPR1000 in late 2021.


Under a strategic investment agreement signed in October 2016, CGN agreed to take a 33.5% stake in EDF Energy's Hinkley Point C project in Somerset, as well as jointly develop new nuclear power plants at Sizewell in Suffolk and Bradwell in Essex. The Hinkley Point C and Sizewell C plants will be based on France's EPR reactor technology, while the new plant at Bradwell in Essex will feature the Hualong One design.


As part of that agreement, CGN formed a joint venture company with EDF Energy to seek regulatory approval for a UK version of the Hualong One design.


The GDA is a voluntary process for reactor vendors - it is policy rather than law - but it is a government expectation for all new-build projects in the UK. In January 2017, the British government formally requested regulators start the process for the UK HPR1000. The initial preparatory step was completed in November last year.


CGN is constructing two demonstration HPR1000 reactors at the Fangchenggang site in China's Guangxi Autonomous Region, about 45km from the border with Vietnam. This is the reference plant for the Bradwell project. First concrete was poured for the nuclear island of unit 3 of the Fangchenggang plant - 39% owned by Guangxi Investment Group and 61% by CGN - in December 2015, while that for unit 4 was poured a year later. Unit 3 is expected to start up next year, with unit 4 scheduled to start up in 2020.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/UK-HPR1000-moves-to-next-step-of-design-assessment

發表人 nicenter 於 2018/11/19 9:25:07 (4 人讀取)

Orano prepares Fugen ATR fuel for reprocessing


Orano has been contracted to carry out preparatory work for the transport of 731 used fuel assemblies from the Fugen experimental Advanced Thermal Reactor (ATR) in Japan to France for reprocessing.




The Fugen ATR (Image: JAEA)

Fugen was a 165 MWe heavy water moderated, boiling light water cooled reactor of the pressure tube type. It was fuelled solely with mixed oxide (MOX) uranium and plutonium fuel. The reactor - at Tsuruga, Fukui Prefecture - entered commercial operation in March 1979 and was shut down in March 2003. The reactor's decommissioning programme was approved in February 2008.


Japan Atomic Energy Agency (JAEA) has now awarded Orano a contract - the value of which has not been disclosed - to prepare for the shipment of 731 used MOX fuel assemblies from Fugen to France.


Orano said it will conduct all the technical preparatory works for the future shipments of 111 tonnes of nuclear materials planned to be carried out between 2023 and 2026, including the design and manufacturing of a fleet of transport casks which will meet national and international nuclear safety and security regulations.


The contract also envisages studies to be carried out prior to the acceptance and recycling operations for the used fuel at its La Hague plant, Orano said.


"The signature of this major contract confirms that our customers are choosing nuclear recycling as a responsible and efficient solution for managing their used fuel. It consolidates the international dimension of our industrial platform in France", said Pascal Aubret, executive vice president of Orano's Recycling Business Unit. "This important step forward is also a reward for the all the work and effort put in by our teams on this project".


Frédéric de Agostini, senior executive vice president of Orano's Nuclear Packaging and Services Business Unit, said: "The choice that the JAEA has made further strengthens the long-term relationship that we have with our Japanese partners. Orano has internationally recognized know-how both in the design and approval of packaging by the competent authorities, and in the transport of nuclear materials. This unique expertise enables us to propose a solution that is safe, reliable and perfectly adapted to our customer's needs".


Used fuel from the Fugen ATR had previously been reprocessed at JAEA's Tokai reprocessing plant in Ibaraki prefecture, which entered full operation in 1981. However, the plant was idled in 2006 when a contract for reprocessing used fuel from commercial power reactors came to an end. JAEA announced in September 2014 that it would permanently shut down the reprocessing plant as modifications required under post-Fukushima safety regulations were too costly.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Orano-prepares-Fugen-ATR-fuel-for-reprocessing

發表人 nicenter 於 2018/11/9 9:44:29 (10 人讀取)

Toshiba decides to scrap Moorside project


Toshiba Corp is withdrawing from its nuclear new-build project in the UK and plans to wind up NuGeneration (NuGen), its board of directors decided at a meeting today.




Three AP1000 units were planned at Moorside (Image: NuGen)

NuGen - which was formed in 2009 as the UK joint venture between Japan's Toshiba and France's Engie - planned to build a nuclear power plant of up to 3.8 GWe gross capacity at the Moorside site in West Cumbria, using AP1000 nuclear reactor technology provided by Westinghouse. That reactor design completed the UK regulatory assessment process in March 2017. At that time, Toshiba owned Westinghouse, which filed for Chapter 11 protection with US courts the same month.


In July last year, Toshiba became the sole owner of NuGen, after Engie exercised its right to require the Japanese conglomerate to purchase its stake. The following December, Toshiba announced that Korea Electric Power Company (Kepco) had been selected as the preferred bidder for NuGen. Then, in August this year, Toshiba announced Kepco had lost that status, adding it would however continue to negotiate with Kepco, along with other companies, to acquire NuGen.



Economically rational


Toshiba said today that, "notwithstanding negotiations with multiple companies", it was unable to anticipate being able to complete the sale of NuGen during FY2018 (ending 31 March 2019).


"After considering the additional costs entailed in continuing to operate NuGen, Toshiba recognises that the economically rational decision is to withdraw from the UK nuclear power plant construction project and has resolved to take steps to wind up NuGen," it said.


As part of this, Toshiba has also resolved to liquidate Advance Energy UK Limited (AEUL), the special purpose company it established for holding its shares in NuGen.


Toshiba said it will start the winding-up process by 31 January and will follow all UK legal procedures required to bring it to completion.


As a result of winding up NuGen and AEUL, Toshiba expects to record a consolidated loss before tax of about JPY15 billion (USD132 million). This amount is included in Toshiba’s consolidated business results forecasts for FY2018, announced. In addition, Toshiba also expects to record a loss on the valuation of stocks of subsidiaries and affiliates related to AEUL of about JPY3.8 billion. This loss will be eliminated from the consolidated financial statements and there will be no change in consolidated business results, Toshiba said.


NuGen has capital stock worth GBP381,870,010 (about JPY56.7 billion), according to notes included in Toshiba's statement today. NuGen recorded a net loss of JPY5.38 billion in FY2015, JPY6.91 billion FY2016 and JPY10.23 billion FY2017, respectively.



Moorside


In September, NuGen announced it was reducing its team at Moorside from more than 100 to fewer than 40 - leading to speculation the plant's development was in jeopardy. NuGen said today it has retained a team to support the implementation of the winding-up process and will work with Toshiba and its other stakeholders.


"Whilst NuGen will not be taking the project forward, the Moorside site in Cumbria remains a site designated by government for nuclear new build, and it is now for the Nuclear Decommissioning Authority (NDA) as the owner of the site and the government to determine its future," the Manchester-based company said.


NuGen paid tribute to colleagues, its shareholder, Toshiba, and to the other stakeholders, and the "many various friends of the project both in Cumbria and beyond", who have supported its efforts through the development phase and the proposed sale negotiations.


Tom Greatrex, chief executive of the UK's Nuclear Industry Association, said Toshiba's announcement today to wind-up NuGen was "sad news" for all those involved in the project and for the nuclear sector.


"The Moorside site in Cumbria remains a site designated by government for nuclear new build and has huge local support. It is therefore vital [the] government facilitates the build of new nuclear on the site for the sake of the energy security of the UK and for the local economy in Cumbria," Greatrex said. "With all but one of the UK's nuclear power plants due to come offline before 2030, there's an urgent need for new nuclear to be built quickly, and the Moorside site has a key role to play in this."



Vital need


The GMB trade union said a new nuclear power plant in West Cumbria "remains vital" for the UK's future energy security and requires urgent action.


GMB said the NDA "needs to be scrapped as it currently exists", and a "re-tasked" Nuclear Development Agency created to make sure Moorside, and the accompanying creation of thousands of new jobs and apprenticeships, goes ahead. GMB has "long argued" the government should take a stake in the financing of the Moorside plant, which would have provided 7% of the UK’s electricity needs from 2025.


In the 12 months from 7 March 2017, every 1-in-5.6 days was a low wind day (65 days in total), which meant wind turbines in the UK produced less than 10% of their installed and connected capacity for more than half of the day, GMB said. For 341 days in the year, solar output was below 10% of installed capacity for more than half of the day, it added.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Toshiba-decides-to-scrap-NuGens-Moorside-project

發表人 nicenter 於 2018/11/7 9:30:04 (15 人讀取)

Hurricane-hit Puerto Rico to consider nuclear power


The majority New Progressive Party in Puerto Rico's House of Representatives yesterday introduced a resolution instructing the chamber’s Government Committee to investigate the possibility of building nuclear power plants on the island, Caribbean News has reported.




Properties in Puerto Rico damaged by Hurricane Maria in 2017 (Image: US Customs and Border Patrol)

The party's spokesman, Gabriel Rodríguez, said that following Hurricane Maria’s damaged to Puerto Rico's power grid it was "imperative to look for new, more efficient and less expensive sources" of energy generation.


Hurricane Maria was the strongest storm to make landfall in Puerto Rico in 85 years. It came ashore on 20 September last year, with sustained winds of 155 mph, knocking out power to the entire island.


"One of the most damaged areas and which took longer to restore service was the mountainside. In my representative district #13, there were sectors where electricity was restored a year after Hurricane Maria," the lawmaker reportedly said. Production of power from natural gas or renewable energy have been discussed publicly, but each has advantages and disadvantages, he added.


"The important thing is we do not rule out any of the options in advance, among them the production of nuclear energy," he said, adding that "a feasibility study for its incorporation for the benefit of our citizens" has not yet been conducted.


House Resolution 1189 states that research on the incorporation of nuclear energy should include a careful look at new modular technologies for the design and operation of the plants and the safety measures required, according to the news report. If passed, the committee will have 180 days to present a report on the findings to the House of Representatives.


Rodríguez noted that there are 104 nuclear power units in operation stateside - in California, South Carolina, Florida, New Jersey, Texas, among others.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Hurricane-hit-Puerto-Rico-to-consider-nuclear-powe

發表人 nicenter 於 2018/11/7 9:28:12 (17 人讀取)

Saudi Arabia lays research reactor foundation stone


A foundation stone for Saudi Arabia's first research reactor has been laid at King Abdulaziz City for Science and Technology (KACST).




Prince Mohammed bin Salman at the inauguration ceremonies (Image: Saudi Press Agency)

The low-energy research reactor was one of seven strategic projects in renewable and atomic energy, water desalination, genetic medicine and aircraft manufacturing formally inaugurated yesterday by Crown Prince Mohammed bin Salman bin Abdulaziz, who is also vice president of Saudi Arabia's Council of Ministers and the country's minister of defence.


Saudi Arabia's official press agency did not give further details of the research reactor project. However, according to the Riyadh Daily, construction of the 100 KW reactor is already under way and the project is due to be completed by the end of 2019.


"[The] specifications and design of the reactor were developed by Saudi nuclear experts and with the participation of the King Abdullah City for Atomic and Renewable Energy and international expert houses with the highest international safety standards," it reported.


Saudi Arabia intends to add nuclear power to the country's energy mix with the objective of diversifying and boosting its production capacity. The King Abdullah City for Atomic and Renewable Energy (KA-CARE) last year announced that it was soliciting proposals for 2.9 GWe of nuclear capacity from China, Japan, Russia and South Korea. The country is also advancing plans for small reactors.


Research reactors have been included in the scope of cooperation agreements previously signed by Saudi Arabia with China, Russia and South Korea. A programme of cooperation signed in October 2017 between KA-CARE and Russian nuclear company Rosatom focused on small and medium reactors and on building a new research reactor.


The International Atomic Energy Agency in July completed a mission to assess the development of the infrastructure required for a Saudi nuclear power programme, and KA-CARE has contracted French engineering group Assystem to conduct site characterisation and impact studies for the country's first nuclear power plant.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Saudi-Arabia-lays-research-reactor-foundation-ston

發表人 nicenter 於 2018/11/7 9:25:41 (15 人讀取)

First reactor on Russia's floating plant starts up


One of the two reactors aboard Russia's first floating nuclear power plant, Akademik Lomonosov, has achieved a sustained chain reaction for the first time. The second reactor will be started up and tests carried out before the plant is towed to Pevek next year.




Akademik Lomonosov at Murmansk (Image: Rosatom)

"The physical launch of the reactor unit on the starboard side of the floating nuclear power plant Akademik Lomonosov happened on Friday," a spokesperson for state nuclear corporation Rosatom told Ria Novosti. "The reactor unit reached the minimum controlled power level at 5.58pm Moscow time."


Comprehensive testing of the reactor is expected to start within a few days. The vessel's second reactor will be started in the near future. All the final technological operations at the facility are scheduled to be completed by the end of this year.


The keel of Akademik Lomonosov was laid in April 2007 at Sevmash in Severodvinsk, but in August 2008 Rosatom cancelled the contract - apparently due to the military workload at Sevmash - and transferred it to the Baltic Shipyard in Saint Petersburg, which has experience in building nuclear icebreakers. New keel-laying took place in May 2009 and the hull was launched at the end of June 2010. The two 35 MWe KLT-40S reactors were installed in October 2013.


Akademik Lomonosov - 144 metres in length, 30 metres wide and having a displacement of 21,000 tonnes - left the Baltiysky Zavod Shipyard on 28 April. It arrived in Murmansk on 17 May after having been towed over 4000 kilometres and travelling through four seas: the Baltic, Northern, Norwegian and Barents.

The loading of fuel into the two reactors aboard the floating plant began on 24 July and was completed on 2 October.

The vessel is expected to be towed to its permanent base at Pevek in Russia's Chukotka region in the summer of 2019. Construction work is under way in Pevek, Russia's northernmost city, to create all the necessary on-shore infrastructure. Rosatom said that once in operation the facility will be both the world's only operational floating nuclear power plant and the northernmost nuclear installation. Akademik Lomonosov will replace the Bilibino nuclear power plant and the Chaunskaya thermal power plant, which are being retired. The first Bilibino unit is scheduled to be shut down next year and the whole plant will be shut down in 2021.


"The capacity of the floating nuclear power plant is higher than the current need for Pevek," Vitaly Trutnev, head of the construction and operation of the floating nuclear power plant, was quoted as saying by Vesti. He added that the floating plant will allow for the development of the region.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/First-reactor-on-Russia-s-floating-plant-starts-up

發表人 nicenter 於 2018/11/7 9:21:42 (13 人讀取)

Cameco notes market improvements


The uranium market is showing a marked improvement compared with a year ago but there is still a long way to go, Cameco CEO Tim Gitzel said on 2 November.




Drums of U3O8 at Key Lake (Image: Cameco)

The company has updated its outlook for 2018 and 2019, with changes in exchange rates, higher uranium prices and additional sales opportunities leading to increases in volumes, revenue and average realised uranium price for 2018, Gitzel said in the company's quarterly conference call.


Additional market demand has seen the company's delivery volumes for 2018 increase to 35-36 million pounds U3O8 (13,463-13,847 tU), up from the 34-35 million pounds given in the company's second quarter outlook, and 2019 sales commitments have increased to 27-29 million pounds (previously 25 million-27 million pounds).


Cameco remains on track to produce about 9 million pounds U3O8 this year, Gitzel said. The company expects it may need to purchase an additional 1-3 million pounds in 2018 and 10-12 million pounds in 2019, to meet its increased delivery commitments and maintain its inventory. This is in addition to committed purchases and material already secured in the spot market.


Gitzel said the Canadian company's results reflect the impact of its decision to extend the shutdown of its McArthur River and Key Lake operations, which it announced in July along with its half-yearly results.


"There is no question that the uranium spot market is showing a significant improvement compared to a year ago, but make no mistake it has a long way to go," Gitzel said. Production cuts, reductions in producer inventories and an increase in spot market uranium demand from producers and financial players have helped to remove excess material from the spot market, he said. The current spot market price is up almost 40% from a year ago and the long-term price up about 6%, he noted.


"We at Cameco have played a big role in the spot market cleanup," Gitzel said.


On the demand side, annual basis consumption has returned to pre-2011 levels, but Gitzel said market conditions, including price and long-term contracting opportunities, were not yet right to support a restart at McArthur River and Key Lake. "While we are seeing some positive developments, we have not yet seen the type of response needed from the uranium market. Unfortunately, today's prices are still nowhere near, not even close to the levels needed," he said.



Tax decision


The Tax Court of Canada in September issued an unequivocal ruling in favour of Cameco in a tax dispute with the Canada Revenue Agency (CRA) for 2003, 2005 and 2006. As a result, the company has reversed a CAD61 million (USD46.6 million) provision on its balance sheet and also expects to receive a refund of CAD5.5 million plus interest. The CRA has appealed the decision, but Gitzel said Cameco expects the court's decision to be upheld. The company also believes the decision should apply in principle to subsequent tax years, he said.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Cameco-notes-market-improvements

發表人 nicenter 於 2018/11/5 9:36:36 (16 人讀取)

UK, Canada sign Nuclear Cooperation Agreement


The UK and Canada today signed a bilateral Nuclear Cooperation Agreement (NCA), the third such agreement signed by the UK this year in preparation for its exit from the European Union. It will allow the UK and Canada to continue their "mutually beneficial" civil nuclear cooperation when current European Atomic Energy Community (Euratom) arrangements cease to apply in the UK, Department of Business, Energy and Industrial Strategy (BEIS) said.




Gwozdecky and le Jeune d'Allegeershecque signing the Nuclear Cooperation Agreement in Ottawa today (Image: BEIS)

Announcing the agreement, BEIS said the UK has now concluded all replacement international agreements needed to ensure continuity of civil nuclear trade following Euratom exit.


"The signing of this NCA follows the recent signing of bilateral NCAs with Australia in August and the US in May. These NCAs will continue the effect of current arrangements provided for by UK membership of Euratom, which will cease to apply to the UK upon departure from the EU, ensuring a seamless transition for the nuclear sector in terms of its international relations," BEIS said.


"The UK-Canada NCA is the final NCA necessary to meet a legal requirement set in the Nuclear Safeguards Act 2018 to have in place all of the instruments required to ensure continuity of civil nuclear trade with international partners following the UK’s withdrawal from Euratom," it added.


The NCA with Canada was signed in Ottawa by Mark Gwozdecky, Canadian assistant deputy minister, International Security & Political Affairs, and Susan le Jeune d'Allegeershecque, British high commissioner to Canada.


Following the signing ceremony, UK Business and Industry Minister Richard Harrington said: "This latest international agreement will help ensure our civil nuclear trade with Canada can continue seamlessly, providing certainty for our world-leading nuclear sector which provides one fifth of all our electricity. These preparations have been recognised as gold standard."


The three bilateral NCAs will shortly be laid before the UK Parliament for ratification, alongside the two nuclear safeguards agreements signed with the International Atomic Energy Agency in June. This will ensure that, "in the unlikely event” of there being no Brexit deal, they can come into effect at the end of March next year, BEIS said.


The UK itself does not require NCAs to be in place in order for trade in nuclear-related items, BEIS noted. However, NCAs are a requirement for civil nuclear trade in some countries, where there is a domestic legal or policy requirement for an NCA to be in place before such trade with other countries can be permitted. Australia, Canada, Japan, and the USA all require NCAs to be in place to facilitate nuclear-related trade. Therefore, these NCAs are an essential prerequisite for ensuring that the UK’s civil nuclear cooperation can continue unaffected.

The UK has had a bilateral NCA in place with Japan since 1998. The UK and Japan are putting in place arrangements to ensure that this NCA remains operable following the UK’s withdrawal from Euratom.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/UK,-Canada-sign-Nuclear-Cooperation-Agreement

發表人 nicenter 於 2018/11/5 9:34:12 (14 人讀取)

Idaho proposed for HALEU fuel fabrication


The US Department of Energy (DOE) is seeking public comment on a draft environmental assessment for a proposal to fabricate nuclear fuel at Idaho National Laboratory (INL) to support US efforts to develop and deploy new reactor technologies.




EBR-II, which operated until 1964 (Image: INL)

The high-assay low enriched uranium (HALEU) fuel would be fabricated from blended-down used fuel from the now-decommissioned Experimental Breeder Reactor-II (EBR-II), which operated at the site from 1964 to 1994.


Used high-enriched uranium fuel from EBR-II's operations are currently refined and downblended at INL's Materials and Fuels Complex (MFC) using an electrorefiner. The HALEU thus produced - which contains 5-20% of fissile uranium-235 - is currently stored at INL.


The low-enriched uranium (LEU) fuel used in today's nuclear power plants typically contains less than 5% of fissile uranium-235, but many of the advanced reactor designs currently under development will require HALEU fuel. There are at present no commercial facilities in the US that are immediately capable of producing HALEU.


DOE proposes expanding capabilities at MCF and at the Idaho Nuclear Technology and Engineering Center to convert metallic HALEU into about 10 tonnes of reactor fuel for research and development purposes. This would be used to support near-term research, development and demonstration needs of private-sector developers and government agencies, including advanced reactor developers. Most of the HALEU would come from the processing and treatment of used fuel from EBR-II, as well as other small quantities of the material that are stored at INL.


"There are several US companies pursuing advanced reactor designs that would use fuel enriched with higher levels of uranium-235, and need a source so they can conduct the research and development needed to bring these new technologies to market," DOE Deputy Assistant Secretary for Nuclear Technology Research and Development John Herczeg said. "Being able to provide a source of this fuel would support this research and development and aligns with the Office of Nuclear Energy's mission to advance nuclear power as a resource capable of meeting the nation's energy, environmental and national security needs."


Earlier this year the US Senate approved a proposal for a USD15 million pilot programme to demonstrate to the blending down of used HEU fuel from the USA's naval programme to produce useable HALEU.


EBR-II was a 62.5 MWt demonstration reactor, typically operating at 19 MWe, and was used to demonstrate a complete sodium-cooled breeder reactor power plant with onsite reprocessing of metallic fuel, as well as providing heat and over 2 TWh of power to the Idaho facility during its operating life. It was also used for testing materials and fuels for larger fast reactors and became the basis of the US Integral Fast Reactor, proving the concept of fuel recycling and passive plant safety characteristics. Several small modular reactor designs currently under development reference EBR-II, including Advanced Reactor Concepts's ARC-100 integral fast reactor and GE-Hitachi's PRISM sodium-cooled fast reactor.


A deadline of 30 November is set for public comments on the draft environmental impact statement.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Idaho-proposed-for-HALEU-fuel-fabrication

發表人 nicenter 於 2018/11/5 9:32:35 (12 人讀取)

IAEA reviews long-term safety of Argentinean plant


An International Atomic Energy Agency (IAEA) team of experts yesterday completed a review of long-term operational safety at Argentina's Atucha I nuclear power plant. The team reviewed the plant's preparedness, organisation and programmes related to long-term operation against IAEA safety standards.




The Atucha I plant (Image: NA-SA)

The 11-member Pre-SALTO (Safety Aspects of Long Term Operation) mission team focused on aspects essential to the safe long-term operation of the 362 MWe (gross) pressurised heavy water reactor, which began commercial operation in 1974. Nucleoelectrica Argentina SA (NA-SA), operator of the plant, is preparing to extend its operating period until 2024. The review mission was requested by NA-SA.


The plant has made progress in ageing management and preparedness for long-term operation (LTO), the IAEA said. The team noted that the plant's LTO project already addresses several topics recommended by IAEA safety standards, with some activities partially implemented and many others already begun. The team - comprising nine experts from Belgium, Canada, Finland, Spain, Sweden, Switzerland and the UK, as well as two IAEA staff members - found plant personnel to be "professional, open and receptive to suggestions for improvement".


The team identified several good performances that will be shared with the nuclear industry globally. These included that the plant has implemented short-term trending of preventative maintenance activities, allowing for information to be validated and short-term abnormalities to be identified. Condition assessment reports in the mechanical area are well developed with regards to both traceability and completeness. In addition, the plant has also revalidated time limited ageing analysis (TLAA) to confirm effective management of cumulative fatigue in certain areas. TLAAs are plant calculations and analyses that consider the effects of ageing, involve time–limited assumptions defined by the current operating term and generate conclusions or provide the basis for conclusions related to the capability of a structure or component to perform its intended function.


The mission team provided several recommendations for further enhancing LTO safety at Atucha I, including that the plant should improve LTO organisational arrangements and processes to ensure timely implementation of all activities to demonstrate preparedness for safe LTO. The plant should also establish and consistently apply a clear and unambiguous scope setting methodology for LTO assessment. In addition, it should fully establish and implement a comprehensive equipment qualification programme.


The team provided a draft report to the plant management at the end of the mission. A final report will be submitted to the plant, the Argentinean regulatory authority and the government within three months.


The plant management said it was committed to implementing the recommendations and requested that the IAEA schedule a SALTO mission in November 2020.


A SALTO peer review is a comprehensive safety review addressing strategy and key elements for the safe long-term operation of nuclear power plants. SALTO missions complement IAEA Operational Safety Review Team (OSART) missions which are designed as a review of programmes and activities essential to operational safety. SALTO peer reviews can be carried out at any time during the lifetime of a nuclear power plant, although according to the IAEA the most suitable time lies within the last ten years of the plant's originally foreseen operating period. SALTO and OSART reviews are carried out at the request of the IAEA member country in which the review is to take place.


In April, Argentina's nuclear regulator issued an amendment to the operating licence of Atucha I, which authorises the start of Stage A of the plant's long-term operation. The Autoridad Regulatoria Nuclear said that during this phase progress will be made in the preparation of the plant's modernisation project, which would make its operation viable in the longer term, at Stage B. The new permit allows Atucha 1 to operate for five years of full power generation, or until 29 September 2024, the end date of the current periodic safety review, whichever occurs first.


Atucha is home to two of Argentina's three operating nuclear power plants, all pressurised heavy water reactors. With total generating capacity of 1627 MWe, the three units - Atucha I and II plus Embalse - provide about 10% of the country's electricity. A prototype domestically designed and developed 25 MWe small pressurised water reactor - CAREM - is under construction at a site adjacent to the Atucha plant.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/IAEA-reviews-long-term-safety-of-Argentinean-plant

發表人 nicenter 於 2018/11/5 9:30:50 (10 人讀取)

Decommissioning milestone for space fuel plant


Equipment contaminated with plutonium from the manufacturing of fuel for deep space missions has been removed from the 235-F building at the US Department of Energy's Savannah River Site, marking a milestone in reducing risk at the South Carolina facility.




Operators prepare for training in the 235-F mock-up (Image: DOE Office of Environmental Management)

The Plutonium Fuel Form (PuFF) Facility, located in 235-F, was used to make fuel spheres and pellets out of plutonium-238 (Pu-238). These were used to power deep space missions, such as the Galileo space probe to Jupiter launched from the Space Shuttle Atlantis in October 1989.


The PuFF Facility contains nine cells of thick concrete walls with shielded windows. An estimated 1500 grams of Pu-238 remain in its shielded cells. Its removal is extremely challenging because of the amount of material involved, the very tight spaces with limited accessibility, and the way in which the spheres and pellets were made, which means the Pu-238 was left in some cells as a very fine particulate dust that is easily disturbed. Material entered the facility in Cell 1 and travelled through the other cells to be made into spheres and pellets, handled with remote manipulators.


The Savannah River National Laboratory is using existing technology and developing new tools to locate and remove the Pu-238 or to fix it to ensure it will not become mobile during decontamination activities. Any Pu-238 and tools containing it will be safely stored for eventual packaging and shipment to the Waste Isolation Pilot Plant in New Mexico for disposal. The material to be removed includes wires and manipulator handles. Operators will work remotely as they pass the items through the cells for removal, after which the cells will be vacuumed and otherwise cleaned to remove the leftover plutonium. DOE Office of Environmental Management workers have practiced cleanup work in a mock-up of 235-F.


"This material removal marks a huge milestone in the multi-year process to reduce the risk and clean up the PuFF Facility cells," 235-F Project Manager Jeff Hasty said. "We started planning for removal in 2012 and have been preparing the cells since then. Work completed so far in the facility includes removing fixed combustibles, upgrading the fire detection system, de-energizing unneeded electrical circuits, draining and cleaning shield windows after their partial disassembly, and installing light sources."


Deep space missions require reliable, long-lasting power sources both for propulsion once they are in space and to power experiments and equipment. Radioisotope thermoelectric generators (RTGs), usually powered by Pu-238, have been widely used as power sources in satellites and other space but production of the isotope ceased at Savannah River in 1988 and supplies are now scarce. The USA's The National Aeronautics and Space Administration currently testing the Kilopower reactor, a uranium-fuelled Stirling engine for use in possible future missions to Mars.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Decommissioning-milestone-for-space-fuel-plant

發表人 nicenter 於 2018/11/2 9:51:26 (17 人讀取)

Climate goal demands huge boost in Chinese nuclear


China's nuclear generating capacity must increase to 554 GWe by 2050 if the country is to fulfill its part in meeting a proposed target of limiting global temperature rise to below 1.5°C, according to a study by the National Development and Reform Commission's Energy Research Institute.




The Tianwan nuclear power plant in China (Image: AtomStroyExport)

The Paris Climate Change Agreement, which entered into force in November 2016, aims to limit the global temperature rise to below 2°C by 2010. The agreement also aims to drive efforts to limit temperature increases to below 1.5°C.


Researchers at China's Energy Research Institute analysed the nuclear power capacity needed in the country by 2050 to realise the 1.5°C target, as well as the feasibility, necessary measures and difficulty. The results were published in Advances in Climate Change Research earlier this year.


China's nuclear power capacity will need to increase from 26 GWe in 2015 to 554 GWe in 2050, the study concluded. The share of nuclear power in country's energy mix would increase from 3% to 28% over this period.


The study noted that, up to the end of August 2017, 37 power reactors were in operation in China, with a combined generating capacity of 35,820 MWe. A further 19 reactors with an installed capacity of 22,140 were under construction.


An additional 290 reactors will need to be constructed in order to add a further 361.3 to 433.3 GWe of generating capacity, depending on the size of the reactors built.


"Only if the additional nuclear reactors all feature large capacities similar to CAP1400 in the future, and the annual uptime of nuclear power plants reaches 7500 hours, can the demand of the 1.5°C target for nuclear power in China be met narrowly."


To achieve this growth in nuclear generating capacity, new reactors must be built at a rate of ten per year up to 2046. China's three major equipment manufacturing bases currently have the capacity to supply 10-12 reactors annually, the study notes. However, the country's nuclear power plant construction capacity would need to double. In addition, the workforce required to operate nuclear power plants would also be ten-times the current size.


With regards to the cost of constructing up to 433.3 GWe of new nuclear capacity, the study says that assuming an "all-in cost" of CNY20,000 (USD2867) per kW, an investment of more than CNY8.7 trillion (USD1.3 trillion) will be required. Based on investment in new capacity over the past few years, the 2050 total investment demand is "feasible".


"If by 2050, around 21% of China's electricity is generated with nuclear energy, nuclear and renewable power will basically account for over 80% in the power mix," the report concludes. "In such context, total installed nuclear power capacity only needs to reach around 415 GWe, which is easy considering available site resources, nuclear power construction capacity, available funds, and the operation and management talents pool."


It added, "Such massive development also needs public acceptance, which in fact already affects the development of China's nuclear power and will have more impact in the future. Therefore, significant improvement of public acceptance has become an important work and must be carried forward across the country."


The Energy Research Institute of the National Development and Reform Commission was established in 1980. It is a national research organisation conducting comprehensive studies on China's energy issues. The scope of research conducted by ERI covers the fields of energy production, distribution, and consumption. The main focus is on soft scientific studies in the fields of energy economy, energy efficiency, energy and the environment, and renewable energy.


A large increase in the use of nuclear power would help keep global warming to below 1.5 degrees, according to a United Nations report published earlier this month. The Intergovernmental Panel on Climate Change (IPCC) special report - Global Warming of 1.5 degrees - was commissioned by governments at the Paris climate talks in 2015 and will inform the COP24 summit in Katowice, Poland this December.


The nuclear industry has set the Harmony goal for nuclear energy to provide 25% of global electricity by 2050. This will require trebling nuclear generation from its present level. Some 1000 GWe of new nuclear generating capacity will need to be constructed by then to achieve that goal.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Climate-goal-demands-huge-boost-in-Chinese-nuclear

發表人 nicenter 於 2018/10/31 9:37:12 (18 人讀取)

Poland needs nuclear power, explains energy minister


Polish Energy Minister Krzysztof Tchórzewski has made the case for the country to adopt nuclear power in an opinion piece published in online magazine Wszystko Co Najważniejsze. The minister explained how such a policy would boost investment in Polish engineering know-how and a knowledge-based economy.




Krzysztof Tchórzewski (Image: Polish Ministry of Energy)

Tchórzewski will make a keynote speech at World Nuclear Spotlight Poland, a World Nuclear Association event to be held in Warsaw on 20-21 November.


Poland produces most of its electricity from coal and imported gas, and Tchorzewski has warned that the country will not meet European Union carbon emissions reduction targets unless it revives plans to build a nuclear power plant. In 1990, coal-fired power plants accounted for 98% of electricity in Poland. Today its share is 80%.


In the magazine article, he wrote: "The climate policy of the European Union and the winter package compel further decrease of the percentage of coal in the energy mix amid the continuously growing demand for electricity. Against this background, we must answer the strategic question: What source of energy can provide us with a stable supply of electricity no matter the weather conditions and in keeping with the foundations of our energy security?"



Emissions


Poland's membership of the European Union and the global approach to climate protection have a “natural influence” on Polish coal-based energy generation, he wrote, and the winter package - which limits investing in high-emission energy sources due to Poland’s aging coal-fired power plants - "reduces room for manoeuvre" in choosing its energy strategy.


"In order to keep the coal-fired power plants, underpinning our energy security, in the energy production system, we must introduce a new energy source that will allow [us] to reduce the average CO2 pollution caused in the course of generation. Such a source that can be incorporated into our energy system without creating any emission-related costs is nuclear energy."


Renewable energy sources are as emission-free as nuclear power, he wrote, but depend on the weather.


"During this summer's heat wave in Poland, demand for electricity hit records. Extreme temperatures created a threat to security of local energy supply. Unfortunately, there was no wind, so the installed capacity in wind farms could not be used to remedy the situation. In July, wind farms provided a mere 4% of the energy consumed, and for many days the share was at the zero level. On average, only 14% of all the installed wind power capacity was used. At peak times, we put to work everything that was possible, and had to resort to large imports."


Renewables cannot be stored on a large scale, he noted, and must be used when they are produced. This means additional generation capacities must be installed as a reserve. However, a gas-fired power plant with a capacity of 1000 MW requires more than a billion cubic metres of gas each year.


"A gas power plant is cheaper to build, but its output is much more expensive than a nuclear one," he wrote. It is also vulnerable to external risks. "Nuclear fuel can be stored for over twn years, since one nuclear unit needs only two fuel trucks a year. By contrast, one coal unit requires about 200 coal wagons daily, and natural gas must be combusted nonstop," he added.



Nuclear


There are 23 nuclear power units within a 300km radius of Poland, he noted, including 14 in the Visegrád Group alone. The Visegrád Group, or V4, is a cultural and political alliance of four Central European states - the Czech Republic, Hungary, Poland and Slovakia, that are members of the European Union. Poland is the only V4 country that does not have nuclear power in its energy mix, he wrote.


"Hungary, the Czech Republic and Slovakia are expanding their production capacity in this area. The atom's renaissance is well on its way. There are 455 nuclear units worldwide, and 55 more are under construction. In the last couple of months, first reactors of the third/third+ generation were commissioned, with the rapidly developing Asian countries leading the charge. According to the International Energy Agency, it will be impossible to achieve any climate goals without further development of nuclear energy," he wrote.


"The odds of a major accident in the latest reactor of the third/third+ generation are less than 1:400,000,000, while the risk of a man struck by lightning is 1:3,000. Nuclear energy is stable and safe. In Poland, we are able to deal with radioactive waste, an example of which is the radioactive waste repository in Różan, which has been in safe service for over 50 years. The fact that no one died of radiation exposure in Fukushima failed to break through to public awareness," he added.


The Polish Energy Ministry has prepared an amendment to the Nuclear Energy Programme, which he said will be submitted to the Council of Ministers by the end of this year.


The full article is here: https://wszystkoconajwazniejsze.pl/krzysztof-tchorzewski-why-poland-needs-nuclear/


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Poland-needs-nuclear-power,-explains-energy-minist

發表人 nicenter 於 2018/10/31 9:33:52 (16 人讀取)

Fourth Tianwan unit connected to grid


Unit 4 of the Tianwan nuclear power plant in China's Jiangsu province has been connected to the electricity grid, bringing global nuclear generating capacity to over 400 GWe for the first time.




Tianwan units 1-4 (Image: Rosatom)

Tianwan Phase I - units 1 and 2 - was constructed under a 1992 cooperation agreement between China and Russia. First concrete was poured in October 1999, and the units were commissioned in June 2007 and September 2007, respectively.


Tianwan Phase II - units 3 and 4 - are similar to the first stage of the Tianwan plant, comprising two AES-91 VVER-1000 units designed by Gidropress and supplied by Russian state nuclear corporation Rosatom. First concrete for unit 3 was poured in December 2012, while construction of the fourth unit began in September 2013. Unit 3 achieved first criticality on 29 September last year and was connected to the grid on 30 December. The unit entered commercial operation on 15 February having completed demonstration operation at nominal capacity for 100 hours.


The loading of a total of 163 fuel assemblies into the core of unit 4 was started on 25 August and completed on 2 September. The reactor achieved first criticality at 30 September.


Following permission from the Chinese regulator, power at Tianwan 4 was raised to 25% of capacity, after which the turbine was brought into operation and electrical tests of the field and power delivery systems were carried out. This process was completed at 1.53am on 27 October. "The result of the work was the connection of the power unit to the electricity system," Rosatom said. "All systems of the power unit were operating according to the design mode."


Power output from the reactor will now be maintained at 25%. Dynamic tests will later be performed at 50%, 75% and 100% of capacity. Upon completion of initial testing at full thermal capacity, demonstration operation will proceed at nominal capacity for 100 hours, after which preliminary acceptance procedures will follow. Preliminary acceptance is the starting point of a two-year warranty period for the operation of Tianwan 4. The unit is scheduled to enter commercial operation later this year.


Construction of Tianwan Phase III - units 5 and 6 - was originally scheduled to start in early 2011. However, following the March 2011 accident at Japan's Fukushima Daiichi plant, the Chinese government suspended the approval of new nuclear power projects, including those two units.


The latest Five-Year Plan called for construction of Phase III of the Tianwan plant to be accelerated. China's State Council gave its approval for Tianwan units 5 and 6 - both featuring 1080 MWe ACPR1000 reactors - on 16 December 2015. First safety-related concrete was poured for unit 5 on 27 December 2015, with that for unit 6 poured on 7 September 2016. CNNC plans to put both units 5 and 6 into commercial operation by the end of 2021.


On 8 June, Russia and China signed four agreements, including for the construction of two VVER-1200 reactors as units 7 and 8 of the Tianwan plant. In addition, two VVER-1200 units are to be constructed at the new Xudabao site in Liaoning province.


"The Tianwan nuclear power plant is currently the largest Russian-Chinese power project that is being developed successfully thanks to the synergy of specialists from the two countries," said Alexey Likhachov, director general of Rosatom. "And start-up of the fourth power unit is further proof of that. At the Tianwan plant site we became a united team with our Chinese colleagues, which has facilitated the achievement of this milestone. Our further cooperation, both in the construction of the next phases of the Tianwan plant and on the new Xudapu site, will for sure also be efficient and fruitful."


Connection of Tianwan 4 to the electricity grid brings the number of operable power reactors worldwide to 454, with a combined generating capacity of 400,287 MWe. As such, global nuclear capacity has exceeded 400 GWe for the first time. A further 54 reactors are currently under construction, with a total capacity of 54,675 MWe.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Fourth-Tianwan-unit-connected-to-grid

發表人 nicenter 於 2018/10/29 9:22:07 (17 人讀取)

NEI to review US-China export policy


The US Nuclear Energy Institute (NEI) is working to determine the impact of the US government's recently announced policy framework for civil nuclear cooperation with China. Careful implementation is critical to mitigate commercial harms, the NEI's Dan Lipman said.






The Department of Energy (DOE) announced the new policy framework on 11 October, following a government policy review led by the US National Security Council. The policy guidance covers exports of technology, equipment and components, and material, and sets out a framework for the disposition of the DOE's authorisation requests for transfers to China under Part 810 of Title 10 of the Code of Federal Regulations (10 CFR part 810).


Lipman, NEI vice president of Suppliers, New Reactors and International Programs, acknowledged the policy framework is based on legitimate concerns, but cautioned that careful implementation is critical to mitigate commercial harm.


"The US government has undertaken a thorough review of civil nuclear cooperation with China and developed a policy that seeks to balance national and economic security concerns with potential harms to our strategically important industry," Lipman said. "NEI is working with our member companies to determine the scope of commercial impact from the policy framework. Given that various nuclear technologies will be shut out of the world's largest market that impact is clearly significant and we are reviewing this very carefully."


The guidance "appears to have little effect on the approved transfer of large light water reactor technologies and components", such as those for Westinghouse AP1000s that are now already operating in China, the NEI said. Applications under 10 CFR parts 110 and 810 have been on hold since 2017, pending the policy review. DOE and the US Nuclear Regulatory Commission have said they will meet with applicants "immediately" to clear the backlog of pending applications.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/NEI-to-review-US-China-export-policy

發表人 nicenter 於 2018/10/29 9:20:04 (10 人讀取)

Taiwanese to have say on nuclear phase-out policy


A referendum on the Taiwanese government's policy to phase out the use of nuclear energy by 2025 is to be held alongside local elections next month, Taiwan's Central Election Commission (CEC) has announced after initially rejecting the proposal.




Pro-nuclear activists outside the CEC on 10 October 2018 (Image: Nuclear Myth-Busters)

Taiwan has four operable nuclear power reactors - two each at the Kuosheng and Maanshan plants - which account for around 15% of the island's electricity generation. Construction of two units at Lungmen began in 1999, but the project has been beset with political, legal and regulatory delays. The completed unit 1 was mothballed in July 2015, while construction of unit 2 was suspended in April 2014.


Taiwan's Democratic Progressive Party (DPP) was elected to government in January 2016 having a policy of creating a "nuclear-free homeland" by 2025. Shortly after taking office, the DPP government passed an amendment to the Electricity Act, passing its phase-out policy into law.


The referendum proposal asks voters whether they agree with abolishing Paragraph 1 of Article 95 of the Electricity Act, which stipulates that "all nuclear energy-based power-generating facilities shall completely cease operations by 2025".


The call for a referendum on the government's phase-out policy was led by pro-nuclear and pro-democracy activist Shih-Hsiu Huang, co-founder of Nuclear Myth-Busters.


Under Taiwanese law, petitioners must deliver an initial 2000 signatures before gaining permission to spend six months gathering more signatures. The pro-nuclear activists reportedly submitted the initial signatures in March, but did not get permission until July to gather further signatures.


In August, former Taiwanese president Ma Ying-jeou endorsed the referendum and joined pro-nuclear environmentalists in gathering signatures on the streets of Taipei.


Organisers said they delivered 315,000 signatures to the CEC on 6 September - more than the required 282,000 for a referendum. An additional 24,000 signatures were delivered on 13 September, which the CEC rejected after the deadline for submitting them was brought forward.


In protest to the CEC's rejection of the signatures, Huang began a hunger strike the same day. However, after 140 hours without food, he was rushed to hospital on 19 September with high blood pressure and a fast heartbeat. Two fellow activists continued the hunger strike on Huang's behalf.


Ten renowned scientists, conservationists, energy experts and pro-democracy advocates wrote to President Tsai Ing-wen on 19 September to "express their concern" over the government-run CEC's handling of the proposed referendum.


"We urge you and the CEC to accept all signatures delivered before the official deadline of 14 September, and to treat the petitioners fairly," they said in a joint letter. "Whether you support or oppose nuclear energy, it is vital that the people of Taiwan be able to deliberate and decide on this matter themselves."


The CEC said on 12 October that the petitioners had fallen short of the legal threshold to launch a referendum by 2326 signatures. However, on 17 October the Taipei High Administrative Court ordered the commission to accept the additional signatures submitted on 13 September.


The CEC announced yesterday that, taking these additional signatures into account, the petitioners had sufficient signatures to include the referendum in local elections on 24 November.


Huang said if the proposed referendum is passed the clause in the Electricity Act will be removed three days after the commission announces the voting results, the Taipei Times reported. He also said another referendum proposal may also be submitted to resume work on two reactors at Lungmen if the government refuses to change its nuclear power policy.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Taiwanese-to-have-say-on-nuclear-phase-out-policy

發表人 nicenter 於 2018/10/26 9:37:55 (10 人讀取)

Indian reactor breaks operating record


Unit 1 of India's Kaiga nuclear power plant has completed its 895th day of continuous operation, a new world record for continuous operation of a pressurised heavy water reactor (PHWR) and the second-longest for a nuclear power reactor of any type.




Kaiga nuclear power plant (Image: NPCIL)

The 220 MWe Indian-designed and domestically fuelled reactor has now operated without a break since 13 May 2016, Nuclear Power Corporation of India Ltd (NPCIL) announced today.


The previous operating record for a PHWR of 894 days was set in October 1994 by the Pickering 7 reactor in Canada. The current world record for continuous operation for a commercial nuclear power reactor of any type is held by unit 2 of the UK's Heysham II plant, an advanced gas-cooled reactor (AGR) which had completed an unbroken 940 days in service when it was taken offline for a scheduled maintenance outage in September 2016.


PHWRs and AGRs are designed to be refuelled without being shut down first, and Indian reactors have achieved operating runs of over a year 28 times, NPCIL said. Kaiga 1 is one of three Indian reactors to have operated continuously for more than two years, alongside Rajasthan unit 3, with 777 days of continuous operation, and Rajasthan 5, with 765 days.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Indian-reactor-breaks-operating-record

發表人 nicenter 於 2018/10/24 9:43:27 (10 人讀取)

Second AP1000 enters commercial operation


Unit 1 of the Haiyang nuclear power plant in China's Shandong province has completed 168 hours of full-power continuous operation. The unit is now deemed to be the second AP1000 reactor to enter commercial operation.




The two AP1000 units at Haiyang (Image: State Nuclear Power Technology Corporation)

Haiyang 1 completed the full-power demonstration test run at 10.12pm yesterday, State Power Investment Corporation has announced. The reactor, it said, has now met "commercial operation conditions". Although operator China National Nuclear Corporation must still obtain necessary permits and documentation, the unit can now be considered to be in commercial operation.


In September 2007, Westinghouse and its partner the Shaw Group received authorisation to construct four AP1000 units in China: two at Sanmen in Zhejiang province and two more at Haiyang in Shandong province. Construction of Sanmen 1 began in April 2009, while first concrete for Sanmen 2 was poured in December 2009. Construction of Haiyang 1 and 2 began in September 2009 and June 2010, respectively.


Unit 1 of the Haiyang plant attained first criticality on 8 August and was grid connected on 17 August.


On 21 September, Sanmen 1 became the first AP1000 to enter commercial operation. Unit 2 of the Sanmen plant is also expected to enter commercial operation by the end of this year, while Haiyang 2 is expected to start up early next year.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Second-AP1000-enters-commercial-operation

發表人 nicenter 於 2018/10/22 9:20:02 (18 人讀取)

First neutron accelerator delivered to Mo-99 facility


The first production accelerator has been delivered to Shine Medical Technologies' isotope production campus in Janesville, Wisconsin. The unit will be used to gain operating experience, train employees and develop maintenance procedures at the plant, which at full capacity will be able to supply over one third of world demand for molybdenum-99 (Mo-99).




Shine CEO Greg Piefer with parts of the first production unit accelerator (Image: Shine)

The accelerator system has been designed and built specifically for the Shine project by Phoenix LLC, also of Wisconsin, and will produce radioisotopes for use in medical imaging. Phoenix has previously designed prototypes to demonstrate the neutron output and up-time required for medical radioisotope production, but this is the first system designed for regular commercial use, Shine said yesterday.


"This delivery represents the culmination of almost a decade of joint work between Phoenix and Shine, moving from proof of concept, to proof of scale, and now to a commercial-ready unit that can produce thousands of doses of medicine per day when paired with the Shine target," Shine CEO Greg Piefer said. The tests will prove the technology is ready for production and provide important maintenance and operational data well in advance of starting up the actual plant, he added.


Ross Radel, CEO of Phoenix, said the company's mission is to tackle "humanity's greatest challenges" with nuclear technology. "Through our partnership with Shine, our neutron generators will support production of enough Mo-99 to provide millions of people a year with the critical imaging procedures they need," he said.


Mo-99 is the precursor of technetium-99m (Tc-99m), the most widely used isotope in nuclear medicine. With a half-life of only 66 hours, Mo-99 cannot be stockpiled, and security of supply is a key concern. Mo-99 has primarily been produced by a limited number of research reactors, many of which have been operating since the 1960s, and at times supply has been subject to disruptions and significant radioisotope shortages following outages at those reactors.


There has been no commercial production of the isotope in the USA since 1989. Since 2009 the US Department of Energy's National Nuclear Security Administration (NNSA) has been working in partnership with US commercial entities to accelerate the development of technologies to produce the radioisotope domestically, without the highly-enriched uranium (HEU) targets from which most Mo-99 is currently produced. The HEU targets are themselves seen as a potential nuclear proliferation risk.


Shine's system uses low-energy, accelerator-based neutron source to fission a low-enriched uranium target dissolved in an aqueous solution. The company in 2016 received approval from the US Nuclear Regulatory Commission to construct the facility, and announced the completion of the first building on its Jamesville campus - Building One, where the first production unit is to be installed - earlier this year.


Construction of the commercial facility, which will contain eight isotope production units each with its own Phoenix neutron generator, is to begin in next spring. Commercial production of Mo-99 is scheduled to begin in 2021.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/First-neutron-accelerator-delivered-to-Mo99-facili

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