Russia’s BN-800 Reactor Enters Commercial Operation
The plant achieved 100% power last August.
(WNN) The BN-800 fast neutron reactor, Unit 4 of the Beloyarsk nuclear power plant in Russia, has started commercial operation, state nuclear corporation Rosatom announced this week.
Rosatom described the achievement as “one of the most important events of the year for Russian nuclear power.”
(Wikipedia) The plant is a pool-type reactor, in which the reactor, coolant pumps, intermediate heat exchangers and associated piping are all located in a common liquid sodium pool.
The reactor core is, in size and mechanical properties, very similar to the BN-600 reactor core, but the fuel composition is very different. While BN-600 uses medium-enriched uranium dioxide, the new plant will burn mixed uranium-plutonium fuel, helping to reduce the weapon-grade plutonium stockpile and provide information about the functioning of the closed uranium-plutonium fuel cycle. The closed cycle will not require plutonium separation or other chemical processing.
The unit employs a three-circuit coolant arrangement; sodium coolant circulates in both the primary and secondary circuits. Water and steam flow in the third circuit. This heat is transferred from the reactor core via several independent circulation loops. See video below.
Each comprises a primary sodium pump, two intermediate heat exchangers, a secondary sodium pump with an expansion tank located upstream, and an emergency pressure discharge tank. These feed a steam generator, which in turn supplies a condensing turbine that turns the generator
The BN-800 reactor was brought to minimum controlled power for the first time in June 2014, at which time commercial operation was planned for the end of that year. However, in December 2014 Rosenergoatom announced that nuclear fuel for the unit would first be developed further. It was brought again to the minimum controlled power level in August 2015, and again in November 2015, eventually being connected to the grid on 10 December 2015.
The 789 MWe BN-800 Beloyarsk 4 is fuelled by a mix of uranium and plutonium oxides arranged to produce new fuel material as it burns. Its capacity exceeds that of the world’s second most powerful fast reactor – the 560 MWe BN-600 Beloyarsk 3.
Lightbridge and Areva Agree Terms for Nuclear Fuel Joint Venture
(WNN) Lightbridge Corporation and Areva NP announced they have agreed key terms for the creation of a 50-50 joint venture to develop, manufacture and commercialize fuel assemblies based on Lightbridge’s “next generation” metallic nuclear fuel technology.
The two companies announced today they have signed a term sheet outlining key agreements for a US-based joint venture covering fuel assemblies for most types of light water reactors, including pressurized water reactors, boiling water reactors, small modular reactors and research reactors.
Lightbridge’s advanced metallic fuel is made from a zirconium-uranium alloy and uses a unique composition and fuel rod geometry, which, the company says, enables it to operate at a higher power density than uranium oxide fuels in use today.
Lightbridge CEO Seth Grae said the signing of the term sheet “creates a viable and well-defined commercialization path for our patented metallic nuclear fuel technology in the global market”. He added, “This agreement marks a major milestone for Lightbridge. We appreciate the support from Areva NP in rapidly moving this process forward.”
Lionel Gaiffe, senior executive vice president for Areva NP’s fuel business unit, said: “We look forward to advancing nuclear fuel performance through this relationship … Next-generation fuel technology has significant potential to help sustain existing nuclear energy assets, which will serve as the foundation for a clean energy portfolio worldwide.”
In January, Lightbridge received final regulatory approval for irradiation testing of its metallic fuel at Norway’s Halden research reactor, which is expected to begin in 2017.
Six Companies Interested In Building Czech Reactors
(NucNet)(Reuters) Six companies have shown interest in building additional nuclear reactors at existing power station sites in the Czech Republic, but a decision to proceed with construction will probably come after elections in October 2017.
Jan Stuller, the Czech government’s special envoy for nuclear power, said that Russia’s Rosatom, French group EDF, US company Westinghouse, Korea Hydro & Nuclear Power, China General Nuclear Power and a grouping of France’s Areva and Mitsubishi Atmea had all shown interest in future construction.
“It is important to stress that this is not about offers for the construction of new nuclear plant blocks, but responses to our request for information.”
The Czech Republic’s National Action Plan for the Development of Nuclear Energy counts on at least one new reactor being built at the Dukovany and Temelín nuclear sites, with a probable total of four new reactors in the long term at the two locations.
Priority for construction of the first reactor will be given to the Dukovany site, where the first of four reactors operating there will probably be shut down in 2035. The Czech Republic has six commercially operational reactor units: four VVER-440 units at the Dukovany site and two VVER-1000 units at Temelín.
Thge Czech government owned nuclear electric utility CEZ has driven potential bidders crazy in recent years with a series of on-again/off-again announcements about a nuclear tender. At one time it was considering up to five new reactors worth an estimate $25 billion. It cancelled that tender, and a subsequent one which involved CEZ disqualifying Areva for unstated reasons.
Environmental Review Sees No Impact Precluding Turkey Point COLs
(NucNet) There is no environmental impact that precludes issuing combined construction and operating licences (COLs) to Florida Power & Light for two additional units at its Turkey Point site about 25kms south of Miami in Florida.
The NRC and the US Army Corps of Engineers developed a final environmental impact statementointly. FPL is proposing to build two AP1000 units, Turkey Point-6 and -7, at the site of two existing reactors.
The NRC staff continues to work on the project’s final safety evaluation report, which will include a review by the NRC’s advisory committee on reactor safeguards, an independent group of nuclear safety experts.
The Atomic Safety and Licensing Board is conducting a legal hearing on a challenge to the application. When the technical review is completed, the NRC’s commissioners will conduct a separate mandatory hearing regarding the application and the staff’s review. All of these steps must be completed before the NRC can reach a final decision on the Turkey Point application, the NRC said. FPL submitted a COL application in June 2009. The NRC certified the AP1000 design for US use in December 2011.
India, Japan Likely to Sign Nuclear Energy Deal During Modi Visit
(Business Standard)(Press Trust of India) India and Japan are likely to sign a civil nuclear cooperation agreement during Prime Minister Narendra Modi’s two-day visit to that country next week as the two sides completed the internal procedures for the much- awaited agreement.
The two countries had sealed a broad agreement for cooperation in civil nuclear energy during Japanese Prime Minister Shiozo Abe’s visit here last December but the final deal was yet to be signed as certain technical and legal issues were to be thrashed out.
There was political resistance in Japan to go ahead with a nuclear deal with India, particularly after the disaster at the Fukushima Nuclear Power Plant in 2011.
Japan is a major player in the nuclear energy market and an atomic deal with it will also make it easier for US-based nuclear plant makers Westinghouse Electric Corporation and GE Energy Inc to set up atomic plants in India as both these conglomerates have Japanese investments.
Japanese members of the Diet, the countgry’s parliament, have resisted commercial nuclear ties with India because it has not signed the nuclear nonproliferation treaty.
Even if the agreement goes through, India may add a new condition to having Japanese firms do business there. It will ask for Japan’s support to become a member of the Nuclear Suppliers Group, which controls global markets for commercial nuclear reactor fuel. India has been holding U.S. firms hostage to this request by passing a so-called Nuclear Supplier Liability Law. The law also benefits the country’s massive coal interests who have no desire to see coal fired power plants swapped out for nuclear reactors.