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發表人 nicenter 於 2019/2/13 10:28:11 (11 人讀取)

Clean energy ecosystem proposed for USA


Advanced nuclear reactors are part of a "critical subset" of technologies deemed to have very high breakthrough potential for the USA to transition to a "clean energy ecosystem", according to a new report. Meanwhile, a resolution introduced in both the US House and Senate proposes a framework for meeting 100% of the country's power demand through clean, renewable and zero-emissions energy resources.




Ernest Moniz addressing the Senate Committee on Energy and Natural Resources on 7 February (Image: @ErnestMoniz)

Advancing the Landscape of Clean Energy Innovation was commissioned by the Breakthrough Institute and prepared by consulting group IHS Markit and the non-profit Energy Futures Initiative, under the leadership of former US Secretary of Energy and Energy Futures Initiative founder Ernest Moniz and IHS Markit vice chairman Daniel Yergin. The report evaluates ways to maintain US leadership in clean energy innovation by aligning "policies, players and programmes" that will drive technologies that can keep the nation globally competitive.


The increasing focus on clean energy technology solutions and the potential for disruptive changes in energy systems points to the need for an objective review of the current clean energy innovation ecosystem, including identifying its strengths and weaknesses and how it can be improved or accelerated, the study notes. The changing US energy supply profile, advances in technologies such as digitalisation and big data analytics, expansion of electrification in transport and industry, the emergence of "smart cities", and broad social and economic forces pushing to decarbonise energy systems in response to the risks posed by global warming and associated climate change all present significant opportunities for clean energy innovation, it says.


The report uses a four-step methodology - focusing on technical merit, potential market viability, compatibility with other elements of the energy system, and consumer value - to identify breakthrough technologies to address national and global challenges and help meet near, mid- and long-term clean energy needs and goals. Applying these considerations to a list of 23 potential technology candidates, it then draws up a key technology shortlist of: storage and battery technologies; advanced nuclear reactors; technology applications for "difficult to decarbonise" sectors such as industry and buildings; electric grid modernisation and smart cities; and deep decarbonisation/large-scale carbon management.


"Nuclear energy can provide large-scale zero-emissions power generation, as well as clean energy support for industrial value chains," the report notes. Providing for a nuclear energy option - both nationally and globally - to provide clean, dispatchable baseload and scalable power in a complex and dynamic power grid environment is a "critical goal" to help support fundamental needs for stability and resiliency as the global energy system evolves toward a cleaner and more sustainable mix of generation sources, it says.


The current nuclear fleet's reliability and very high capacity factors are major assets but safety, cost, non-proliferation, environmental, and security concerns must also be satisfied going forward, it notes.


Advanced reactors have key attributes of improved economics, enhanced safety systems, reduced used fuel disposal requirements and proliferation risk, as well as the capability for longer refuelling cycles than the current fleet, the report finds. In addition, several advanced reactor technology options - small modular reactors - can be implemented at smaller scale and can be used to produce process heat. "The combination of these two characteristics makes these reactors potentially suitable for many industrial applications that are otherwise difficult to decarbonise," the report finds. Process heat for industrial processes is currently provided almost exclusively by the burning of fossil fuels and is the source of about 20% of total US energy-related CO2 emissions.


"We are now undergoing rapid change in the global competitive environment, challenging America's preeminent position but also offering immense opportunity for shaping the inevitable low-carbon global energy future," Moniz said. "These technologies provide an actionable framework for prioritising public resources and inspiring private innovation."



Green New Deal




A resolution introduced in both the US House and Senate yesterday proposes a framework for meeting 100% of the country's power demand through clean, renewable and zero-emissions energy resources.

 

The resolution, known as the Green New Deal, was introduced in the House by New York Representative Alexandria Ocasio-Cortez and in the Senate by Senator Edward Markey of Massachusetts. It says that, because the USA has historically been responsible for a "disproportionate amount" of greenhouse gas emissions and has a high technological capacity, the country must take a leading role in reducing emissions through economic transformation.

 

The resolution sets out goals and projects for a ten-year national mobilisation which include among other things: building US resiliency against climate change-related disasters; meeting 100% of national power demand through clean, renewable and zero-emission energy sources; maximising energy efficiency; spurring growth in "clean" manufacturing and removing pollution and greenhouse gas emissions from manufacturing and industry; overhauling transport systems; and making the USA the "international leader" on climate action.

 

It does not define what is meant by "clean, renewable and zero-emission energy sources," but says this goal should be met by "dramatically expanding and upgrading renewable power sources; and … by deploying new capacity".

 

Writing in Forbes, Michael Shellenberger - head of the Environmental Progress environmental research and policy organisation - noted that a written statement distributed by the office of Ocasio-Cortez stated that the plan would be to "transition off" nuclear. If attempted nationally, said Shellenberger, this would lead to increased emissions. "[T]he only green new deals that have ever worked were done with nuclear, not renewables," he said.

 

Maria Korsnick, president and CEO of the Nuclear Energy Institute (NEI) responded to the resolution by commending the effort to promote the adoption of clean and zero-emission sources of electricity to address climate change. "Nuclear energy operates 24/7, generates 20% of US electricity and more than 50% of our carbon-free generation, more than all other sources of zero-carbon electricity combined. Any approach to eliminating greenhouse gas emissions requires all clean energy technologies, including nuclear, to work together to address that urgent problem," she said.

 

"There is a growing consensus among climate advocates, including the UN Intergovernmental Panel on Climate Change, The Nature Conservancy, and even The Union of Concerned Scientists, that any climate solution must include nuclear energy," she added. "Former Energy Secretary Ernest Moniz said this week that the notion of achieving a grid composed of 100% renewables by 2050 is 'not realistic'."

 


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Clean-energy-ecosystem-proposed-for-USA

發表人 nicenter 於 2019/2/13 10:25:44 (9 人讀取)

Fuel loading underway at new South Korean reactor


A ceremony has been held to mark the loading of the first fuel into unit 4 at South Korea's Shin Kori nuclear power plant. The country's nuclear regulator gave Korea Hydro & Nuclear Power (KHNP) permission to start up the APR1400 unit on 1 February.




Workers in the control room of Shin Kori 4 celebrate the start of fuel loading (Image: KHNP)

The event, on 7 February, marked the loading of the first of 241 fuel assemblies into the core of Shin Kori 4. The ceremony was attended by Chung Jae-hoon, President and CEO of KHNP, and Kepco Engineering & Construction Company (Kepco E&C) CEO Lee Bae-Soo.


The loading of all the fuel assemblies is expected to be completed by the end of this month. Shin Kori 4 is scheduled to start commercial operation in September following seven months of commissioning tests.


Construction of the first pair of the domestically-designed APR1400 reactors - Shin Kori 3 and 4 - was authorised in 2006, although the actual construction licence was not issued until April 2008.


First concrete for Shin Kori 3 was poured in October 2008, with that for unit 4 following in August 2009. Unit 3 was originally scheduled to enter commercial operation at the end of 2013, with unit 4 due to start in September 2014. However, their operation was delayed by the need to test safety-related control cabling and its subsequent replacement.


Unit 3 eventually reached first criticality in December 2015, was connected to the grid in January 2016 and entered commercial operation in December that year.


KHNP completed cold hydrostatic testing and hot functional testing of Shin Kori 4 in November 2015 and April 2016, respectively. The company announced in August 2017 that it expected to load fuel into the unit last January, with commercial operation beginning in September. However, it said fuel loading was delayed due to slight improvements in the unit's design resulting from commissioning work carried out so far. Additional seismic assessment work has also been carried out in response to the Gyeongju earthquake in September 2016 and the Pohang earthquake in November 2017.


At a meeting on 1 February, the Nuclear Safety and Security Commission approved the start up of Shin Kori 4 after considering the results of an inspection carried out by the Korea Institute of Nuclear Safety.


Construction of two further 1350 MWe APR1400 pressurised water reactors at Shin Kori - units 5 and 6 - began in April 2017 and September 2018, respectively. Unit 5 is scheduled to begin commercial operation in March 2022, with unit 6 following one year later. Two further APR1400 units are under construction in South Korea as units 1 and 2 of the Shin Hanul site.


Four APR1400s are under construction at Barakah in the United Arab Emirates. All four are scheduled to be in operation by 2020.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Fuel-loading-underway-at-new-South-Korean-reactor

發表人 nicenter 於 2019/2/13 10:24:23 (7 人讀取)

Indian government takes steps to get nuclear back on track


A lack of available domestically produced nuclear fuel and delays in constructing and commissioning nuclear power plants, including first-of-a-kind plants and the Prototype Fast Breeder Reactor (PFBR), meant that India failed to meet its nuclear generation targets under the governmental plans over the decade to 2017.




PFBR nuclear island and turbine buildings (Image: Bhavini)

India's nuclear generation target under its 11th five-year plan, covering the period 2007-2012, was 163,395 million units (MUs) and the 12th five-year Plan (2012-17) was 241,748 MUs, Minister of state for the Department of Atomic Energy and the Prime Minister's Office Jitendra Singh told parliament on 6 February. Actual nuclear generation in those periods was 109,642 MUs and 183,488 MUs respectively, Singh said in a written answer to questions in the Lok Sabah.


Singh attributed the shortfall in generation to a lack of availability of the necessary quantities of domestically produced fuel during the three years before 2009-2010; delays to the commissioning of two 1000 MWe nuclear power plants at Kudankulam due to local protests and legal challenges; and delays in the completion of two indigenously designed pressurised heavy water reactors and the PFBR.


Kudankulam 1 and 2 are VVER-1000 pressurised water reactors (PWRs) supplied by Russia's Atomstroyexport under a Russian-financed contract. The units were built by Nuclear Power Corporation of India Ltd (NPCIL) and were commissioned and are operated by NPCIL under International Atomic Energy Agency (IAEA) safeguards, with supervision from Russian specialists. Construction of the units - the first PWRs to enter operation in India - began in 2002.


Singh said local protests resulted in the halt of commissioning work at Kudankulam for nine months from September 2011 to March 2012, when he said project commissioning had been at its peak. As a consequence, additional time was needed to remobilise the workforce and contractors, he said. Litigation by anti-nuclear groups, and compliance with supreme court directives, impacted commissioning in 2013, he said. Unit 1 entered commercial operation in December 2014 and unit 2 in April 2017.


Delays in the manufacture and supply by domestic industry of critical equipment for first-of-a-kind 700 MWe pressurised heavy water reactors -  Kakrapar units 3 and 4, and Rajasthan units 7 and 8 - has led to delays in the completion of those units, the minister said, as well as noting the delay in completion of the PFBR, which is being built at Kalpakkam by Bhavini. In answer to a separate question, Singh said the PFBR is in an "advance stage of integrated commissioning" and is "expected to approach first criticality by the year 2020."


Eight of India's operating nuclear power plants are not under IAEA safeguards and can therefore only use indigenously-sourced uranium. The other 14 units operate under IAEA safeguards and can use imported uranium. The Indian government has taken several measures to secure fuel supplies for reactors in operation and under construction, concluding fuel supply contracts with several countries for existing and future reactors under IAEA Safeguards and by "augmentation" of fuel supplies from domestic sources, Singh said.


Kakrapar 3 and 4 and Rajasthan 7 and 8 are all currently expected to enter service in 2022, according to World Nuclear Association information.



Joint venture discussions


In February 2016 the government amended the Atomic Energy Act to allow NPCIL to form joint venture companies with other public sector undertakings (PSUs) for involvement in nuclear power generation and possibly other aspects of the fuel cycle. In answer to another question, Singh confirmed that NPCIL has entered into joint ventures with NTPC Limited (National Thermal Power Corporation, India's largest power company) and Indian Oil Corporation Limited. Two joint venture companies - Anushakti Vidhyut Nigam Limited and NPCIL-Indian Oil Nuclear Energy Corporation Limited - have been incorporated, and discussions on possible projects to be set up by the joint venture companies are in progress.


An exploratory discussion had also been held with Oil & Natural Gas Corporation, Singh said. Indian Railways - which has in the past been identified as a potential joint venture partner for NPCIL - had "conveyed that they were not contemplating entering into an MoU for setting up of nuclear power plants," Singh said.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Indian-government-takes-steps-to-get-nuclear-back

發表人 nicenter 於 2019/2/13 10:20:58 (7 人讀取)

Cooperation agreement for Rosatom and Russian Academy


Russian state atomic energy corporation Rosatom and the Russian State Academy of Sciences are to cooperate on joint scientific, technical and innovative activities in areas including nuclear energy, nuclear medicine and other areas under an agreement signed in Moscow on 7 February.




Sergeev (left) and Likhachov (right) at the signing ceremony (Image: Rosatom)

The cooperation agreement was signed by Rosatom Director General Alexei Likhachov and President of the Russian Academy of Sciences Alexander Sergeev during a joint meeting to mark Russian Science Day. Under its terms, the partners will cooperate in organising research and development activities aimed at providing technological advantages in various sectors of the domestic industry, as well as creating and developing interdisciplinary scientific and technological centres and organisations. They will also jointly develop strategic planning documents, improve the technical and scientific regulatory and legal framework, and carry out expert evaluations of scientific and technical projects and scientific consultations.


Rosatom said the main areas of cooperation in the agreement are: the development of laser technologies and particle accelerators; the creation of modern diagnostic equipment, nuclear medicine and radiation therapy; controlled thermonuclear fusion; nuclear energy of the future; new materials; the nuclear fuel cycle and its closure; safety of nuclear energy; environmental aspects of radioactive waste management; modern supercomputers, databases, application packages, and import-substituting codes; and also X-ray astronomy and nuclear planetology.


Likhachov said joint activities between Rosatom and the Academy would strengthen the Russian nuclear industry's "leadership" in the world and allow the creation of new technologies that would shape the future image of the nuclear industry in Russia. "Within the framework of the Agreement, we intend to expand work on the entire spectrum of advanced scientific research. The most important direction of our cooperation will be the integration of fundamental, exploratory and applied scientific research, including in the interests of the development of the nuclear industry. We will work together to form the nuclear energy industry of the future, to create new materials, new radiation technologies,” he said.


Sergeyev noted the "rich history" of cooperation between the Academy of Sciences and the nuclear industry. “All major projects in the field of military and peaceful nuclear energy were carried out jointly by scientists and specialists of our organisations, which largely ensured their timeliness and success," he said.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Cooperation-agreement-for-Rosatom-and-Russian-Acad

發表人 nicenter 於 2019/2/13 9:56:55 (8 人讀取)

First Light Fusion commissions pulsed power device


The UK's First Light Fusion has successfully completed constructing and testing its Machine 3 - the only pulsed power machine of its scale in the world dedicated to researching fusion energy. The company aims to demonstrate first fusion later this year.




A rendering of Machine 3 (Image: First Light Fusion)

First Light uses a high-velocity projectile to create a shockwave to collapse a cavity containing plasma inside a 'target'. The design of these targets is First Light's "technical USP", the company said.


Machine 3 can discharge up to 200,000 volts and more than 14 million amperes - the equivalent of nearly 500 simultaneous lightning strikes - within two microseconds. The GBP3.6 million (USD4.6 million) machine uses some 3 kilometres of high-voltage cables and another 10 kilometres of diagnostic cables. Machine 3 uses electromagnetism to fire projectiles at around 20 kilometres per second.


Last July, First Light Fusion successfully fired the first test 'shot' on one of the six limbs of Machine 3 and swiftly proceeded to test three-limb shots in September.


Nicholas Hawker, founder and CEO of First Light Fusion, said: "This is another major milestone for First Light Fusion. Commissioning of Machine 3 has been completed and performance has been confirmed to meet the design specification. We have now started our experimental campaigns. These will culminate in the first demonstration of fusion from one of our target designs. These targets have many elements and we are holding ourselves to a very high scientific standard, verifying operation of each element in isolation and cross-comparing with simulation predictions at all stages."


He said the company is confident that it will be able to demonstrate first fusion using Machine 3 by mid-2019. "After fusion, the next phase is to show energy gain, which we aim to complete by 2024," Hawker added.


The fusion energy gain factor is the ratio of fusion power produced in a nuclear fusion reactor to the power required to maintain the plasma in steady state.


"In parallel we are working on the reactor concept and on the commercial aspects of the technology," Hawker said. "Our technology is uniquely scalable and we believe we can see a clear pathway to the first reactors producing power. We must be led by the science and there is still a lot to do, but if we can find the target that works with our reactor design, fusion would not be 'always 30 years away' - we could make it happen much faster than that."


Last December, First Light Fusion said it was collaborating with the UK Atomic Energy Authority on a project to convert fusion reactions into heat to enable clean power production. The 'fusion island' project is to be partly funded by a grant from the Department for Business, Energy & Industrial Strategy.


First Light Fusion was founded by Professor Yiannis Ventikos, who is currently the head of the Mechanical Engineering Department at University College, London, and Dr Nicholas Hawker, formerly an engineering lecturer at Lady Margaret Hall, Oxford. The company was spun out from the University of Oxford in July 2011, with seed capital from IP Group plc, Parkwalk Advisors Ltd and private investors. Invesco and OSI provided follow-on capital.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/First-Light-Fusion-commissions-pulsed-power-device

發表人 nicenter 於 2019/2/12 10:04:06 (16 人讀取)

Silex and Cameco agree terms for GLE acquisition


Australian technology company Silex Systems Limited and Canadian company Cameco Corporation have signed a term sheet on their proposed joint purchase of GE-Hitachi Nuclear Energy's (GEH) share of GLE, the exclusive licensee for SILEX laser uranium enrichment technology.




(Image: Pixabay)

The proposed restructure of GE-Hitachi Global Laser Enrichment LLC (GLE) would result in Silex holding a 51% interest in the company, with Cameco increasing its interest from its current 24% to 49%. This is subject to finalising a binding purchase agreement and obtaining US government approvals. The term sheet also sets out funding for continuing activities at a test loop located at Global Nuclear Fuel's Wilmington, North Carolina fuel fabrication facility, with the companies paying USD300,000 per month pro-rata backdated from 1 September 2018 until closing, or termination of the agreement should closing not be reached.


The term sheet also provides for a deferred purchase price of USD20 million payable to GEH in four annual instalments beginning after the first calendar year in which GLE achieves revenues of USD50 million. This is also to be paid pro-rata according to the interests acquired in GLE by Silex and Cameco.


Other key terms negotiated by the companies include an option for Cameco to purchase from Silex, at "fair market value", an additional 26% interest in GLE. This would be subject to US government approvals, and would increase Cameco's interest in the company to 75%.


Silex CEO Michael Goldsworthy yesterday said the term sheet was a "very positive step forward" for both Silex and GLE. "Should the binding Purchase Agreement be successfully completed, this will provide a viable path for the commercialisation of the SILEX technology through the Paducah project," he said. GLE has an agreement with the US Department of Energy (DOE) to enrich about 300,000 tonnes of depleted uranium tails to natural-grade uranium at a SILEX plant to be built at Paducah, Kentucky.


The parties aim to execute the binding purchase agreement by 30 April. In addition to US government approvals, closing will be conditional on the 2016 agreement for GLE's purchase of DOE depleted tails inventories remaining in full force and effect, Silex said. "The availability of the DOE's tails inventories is critical to the Paducah Commercial Plant project," it noted.


Laser enrichment technologies - which can be atomic or molecular - potentially offer lower energy inputs, lower capital costs and lower tails assays, and hence significant economic advantages over current commercial centrifuge enrichment technology. The molecular technique uses a laser beam to preferentially excite the uranium-235 isotope in gaseous uranium hexafluoride, which can then be separated. The principles of the SILEX (Separation of Isotopes by Laser EXcitation) process were formulated by Goldsworthy and Horst Struve in the early 1990s. GE Energy in 2006 entered a partnership with Silex to develop the process, leading to the establishment of the GLE joint business venture which Cameco joined in 2008.


In 2016 GEH announced its desire to reduce its equity interest in GLE and signed a term sheet with Silex giving the Australian company an exclusive option to acquire GEH's entire 76% interest. Silex in June 2018 abandoned the acquisition, citing risks associated with GLE's business case. At the time it said a "worsening outlook" for the global nuclear fuel market was the overarching factor contributing to its decision, but also named several issues connected with the commercialisation programme.


While some of those risks have now diminished, other risks remain to be mitigated, Silex said yesterday. "In particular, a recovery in the uranium market price, and further work on market access issues and project financing are required to reduce risks associated with the Paducah project," it said. In the meantime, a "reduced but focused" commercialisation effort will continue at the Wilmington test loop facility, together with a parallel effort continuing at Silex's facility at Lucas Heights in Sydney.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Silex-and-Cameco-agree-terms-for-GLE-acquisition

發表人 nicenter 於 2019/2/12 10:01:49 (7 人讀取)

IMSR materials to be tested at Petten


NRG is to carry out testing of materials, including graphite, for key components of Terrestrial Energy's Integral Molten Salt Reactor (IMSR) power plant in the High-Flux Reactor at Petten in the Netherlands under a contract announced on 5 February.




A rendering of the IMSR core unit (Image: Terrestrial Energy)

The agreement will see NRG provide expert technical services to support Terrestrial Energy’s "in-core" materials testing and the development of its generation IV plant. NRG's services include technical advice on test design and preparation, high-flux irradiation of test specimens, and in-process and post-irradiation examinations and evaluations of the test materials.


"NRG has decades of experience with the controlled irradiation and examination of fuel and materials for innovative Generation-IV reactors," NRG CEO Huub Cuijpers said. "Innovative Generation-IV reactors have truly transformative potential and Terrestrial Energy’s IMSR molten salt reactor is a promising design."


Simon Irish, CEO of Terrestrial Energy, described NRG's testing capability at Petten as world-class. "With the benefit of the high-flux facility and NRG's clear expertise, we anticipate time-efficient materials testing and qualification that will advance IMSR engineering and regulatory activities," he said.


Molten salt reactors use fuel dissolved in a molten fluoride or chloride salt which functions as both the reactor's fuel and its coolant. This means that such a reactor could not suffer from a loss of coolant leading to a meltdown. Terrestrial's IMSR integrates the primary reactor components, including primary heat exchangers, to a secondary clean salt circuit, in a sealed and replaceable core vessel. It is designed as a modular reactor for factory fabrication, and could be used for electricity production and industrial process heat generation.


Terrestrial Energy in 2017 completed the first phase of the Canadian Nuclear Safety Commission's pre-licensing vendor review of the IMSR, and the company is planning to submit either an application for design certification or for a construction permit for the IMSR-400 by late 2019 to the US Nuclear Regulatory Commission. The company and Canadian Nuclear Laboratories are considering the feasibility of siting a commercial plant at Chalk River.


The company has also signed collaborative agreements to advance the design with US Oak Ridge National Laboratory and with the Dalton Nuclear Institute in the UK, and in 2017 entered into a contract with the University of New Brunswick for validation and verification work for the IMSR. It has applied for a US loan guarantee of up to USD1200 million to support financing of a project to licence, construct and commission the first US IMSR, a 190 MWe commercial facility. An agreement was signed with Energy Northwest in March 2018 for the first US IMSR to be built at a site on the Idaho National Laboratory.


In March 2018, Terrestrial Energy signed a technical services agreement with the European Commission’s Joint Research Centre (JRC) in Karlsruhe, Germany. Under that contract, JRC will perform confirmatory studies of the fuel and primary coolant salt mixture for the IMSR.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/IMSR-materials-to-be-tested-at-Petten

發表人 nicenter 於 2019/2/12 9:59:59 (8 人讀取)

GNF and Enusa extend nuclear fuel joint venture


Global Nuclear Fuel (GNF) and Spanish state-owned nuclear fuel manufacturer Enusa Industrias Avanzadas have signed an agreement to extend their GNF Enusa Nuclear Fuel SA (Genusa) joint venture for an additional six years.




A worker inspects a fuel assembly at the Juzbado fabrication plant (Image: Enusa)

Incorporated in 1996, Genusa manufactures and sells nuclear fuel and related services to boiling water reactor (BWR) operators across Europe.


"GNF is committed to the BWR market worldwide and we are pleased to continue to provide customers in Europe with state-of-the-art fuel technology and services by extending the Genusa joint venture," said Amir Vexler, CEO of GNF and president of the Genusa board of directors.


"Extending the Genusa joint venture with GNF is very important for Enusa because it provides stability to our relationship at a time when Genusa has the majority share of the European BWR fuel market," said Roberto González, business development and technology director at Enusa and member of the Genusa board of directors.


Last year, Genusa was awarded a contract by Finnish utility Teollisuuden Voima Oyj to supply fuel reloads for Olkiluoto units 1 and 2, both 880 MWe BWRs. It was also contracted by Swedish utility Vattenfall to supply fuel assemblies for units 1 and 2 at the Forsmark plant. Fuel for these plants is being manufactured by Enusa at its Juzbado fuel fabrication facility in Spain.


GNF is a GE-led joint venture with Hitachi and operates primarily through Global Nuclear Fuel-Americas in Wilmington, North Carolina, and Global Nuclear Fuel-Japan in Kurihama, Japan.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/GNF-and-Enusa-extend-nuclear-fuel-joint-venture

發表人 nicenter 於 2019/2/12 9:58:17 (8 人讀取)

Urenco USA announces HALEU activities


Enrichment company Urenco USA has announced a new programme covering the production of high-assay low enriched uranium (HALEU), and is considering the construction of a dedicated HALEU unit at its US uranium enrichment facility.




Urenco USA (Image: Urenco)

HALEU - uranium enriched up to 19.75% in fissile uranium-235 - is described by the company as a sub-category of low enriched uranium that will be used for civil, peaceful applications in existing and new power plants as well as for research, test and medical isotope facilities. Urenco's advanced gas centrifuge enrichment technology is capable of producing all levels of uranium enrichment, and some of its facilities are already licensed to produce at enrichments above 5%, which is the maximum enrichment level of fuel typically used in most currently operating commercial reactors.


The company said yesterday it is "exploring the construction" of a dedicated HALEU facility at the Urenco USA enrichment facility, and is progressing design engineering and related licensing activities to support the project. Further activity at Urenco USA is underway to support near-term delivery of slightly greater than 5% U235 enrichments for existing light water reactors interested in higher burn-up rates and/or extended operating cycles, the company said.


Urenco Chief Executive Thomas Haeberle said the work fell within the company's core expertise. "We have proven enrichment technology which benefits from modular deployment. This was successfully demonstrated when we built the USA's world scale commercial enrichment plant which can suitably accommodate a HALEU facility," he said, adding that the company is "well placed" to support operators in industry, medicine and research in order to meet the practical and logistical challenges of producing and transporting HALEU.


"This represents an exciting next stage in the civil nuclear power industry and we look forward to collaborating with existing and new customers on their requirements and using our expertise to provide a reliable fuel supply for the future demand," Haeberle said.


HALEU will be required to fuel many advanced reactor designs currently under development, including the U-Battery micro small modular reactor concept which was initiated in 2008 by Urenco and developed by the UK's Universities of Manchester Dalton Institute and the Technology University of Delft in the Netherlands. The single-unit gas-cooled reactor design has an output of 4MWe (10MWt) and uses TRISO (tristructural isotropic) fuel.


The Urenco USA enrichment plant at Eunice, New Mexico, is the only uranium enrichment plant currently operating in the USA. Construction of the plant - the first in the USA to use centrifuge enrichment technology - began in 2006 and the plant's first enrichment cascade reached full production in June 2010. By March 2017 the plant had 63 cascades in production. Its current capacity is 4800 tSWU per year, about a third of US enrichment demand.


The US Department of Energy (DOE) has proposed converting metallic HALEU - from used fuel from an earlier experimental breeder reactor programme - to fuel to support US companies in the development and deployment of new reactor technologies. The DOE also recently announced plans to award a contract to a subsidiary of Centrus Energy Corp to demonstrate the production of HALEU in a cascade of US-designed 16 AC-100M centrifuges at Piketon, Ohio. Technology that is not of US origin can be used to produce HALEU for use in US civilian advanced reactor applications, but only US-origin technology can be used in both civilian and defence-related advanced reactor applications.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Urenco-USA-announces-HALEU-activities

發表人 nicenter 於 2019/2/12 9:56:16 (10 人讀取)

Kansai reschedules restarts of three reactors


Kansai Electric Power Company has informed Fukui Prefecture that the restart of units 1 and 2 of the Takahama nuclear power plant and unit 3 of the Mihama plant has been delayed as work to bolster safety measures will now take longer than originally expected.




Containment building reinforcement work at Takahama unit 1 (Image: Kansai)

Kansai said yesterday that it had completed a review of construction work needed for the units to meet revised safety standards and concluded the schedule needed revising. The upgrades are aimed at preparing the three units for operation beyond 40 years.


At Takahama 1 and 2, work is being carried out to reinforce their containment buildings. Kansai is reinforcing the existing concrete wall surrounding the containment vessel of each unit and as well as installing secondary domes.


Kansai said completion of this work will be postponed by about nine months. The construction work at unit 1 is now scheduled to be completed in May 2020, instead of this August, while at unit 2 it will be finished in January 2021, instead of March 2020.


The utility is also improving fire protection at the two units by replacing fire-resistant cabling and installing fire protection sheeting, as well as installing additional fire detectors and fire extinguishing facilities. It is also replacing the refueling water tank and constructing an anti-tornado wall around the tank. The seawater intake facility of unit 2 is also being relocated by excavating a new tunnel in the bedrock. An anti-tornado wall is also to be built around the new seawater intake facility. The existing central control panels of both units are also being replaced.


Takahama units 1 and 2 are both 780 MWe (net) pressurised water reactors (PWRs) which began operating in 1974 and 1975, respectively. In June 2016, they became the first Japanese units to be granted a licence extension beyond 40 years under the revised regulations.


Most of the work at Mihama 3 is related to improving the unit's seismic resistance. Kansai is reinforcing the used fuel storage pool and replacing its fuel assembly rack. It is also replacing the internal structure of the reactor core and improving the seismic resistance of the reactor containment vessel. The company said this work is now expected to be completed in July 2020, instead of January 2020, as drilling work was taking longer than planned because the supporting bedrock had been found to be deeper than expected.


Other work at Mihama includes improving fire protection work, including replacing old cables with fire-resistant cabling, installing fire protection panels and fire detectors, as well as installing new fire extinguishing equipment. A new, higher tidal barrier is also being constructed at the plant.


Mihama 3 - also a 780 MWe PWR - entered commercial operation in 1976. In November 2016, the Nuclear Regulation Authority approved an extension to the operating period for the unit until 2036.


So far, nine of Japan's 39 operable reactors have cleared inspections confirming they meet the new regulatory safety standards and have resumed operation. These are: Kyushu's Sendai units 1 and 2 and Genkai units 3 and 4; Shikoku's Ikata unit 3; and Kansai's Takahama units 3 and 4 and Ohi units 3 and 4. Another 16 reactors have applied to restart.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/Kansai-reschedules-restarts-of-three-reactors

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