|
KBS-3
KBS-3 (an abbreviation of ''kärnbränslesäkerhet'', nuclear fuel safety) is a technology for disposal of high-level radioactive waste developed in Sweden by Svensk Kärnbränslehantering AB (SKB) by appointment from Statens Strålskyddsinstitut (the government's radiation protection agency). The technology was developed by studying different natural storage facilities such as the natural reactor in Oklo, Gabon and the uranium mine in Cigar Lake, Saskatchewan, Canada. The general theory is that radioactive rock in these sites has been present for thousands of years, and has not affected the health and well-being of human populations. KBS-3 is also to be used in Finland at the Onkalo spent nuclear fuel repository, being built by Posiva. The disposal method consists of the following steps: * The waste is first stored in intermediate storage for 30 years. * The waste is encapsulated in cast iron canisters. * The cast iron canisters are encapsulated in copper (CuOFP alloy) cap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onkalo Spent Nuclear Fuel Repository
The Onkalo spent nuclear fuel repository is a deep geological repository for the final disposal of spent nuclear fuel. It is near the Olkiluoto Nuclear Power Plant in the municipality of Eurajoki, on the west coast of Finland. It is being constructed by Posiva, and is based on the KBS-3 method of nuclear waste burial developed in Sweden by Svensk Kärnbränslehantering AB (SKB). The facility is expected to be operational in 2023. History After the Finnish Nuclear Energy Act was amended in 1994 to specify that all nuclear waste produced in Finland must be disposed of in Finland, Olkiluoto was selected in 2000 as the site for a long-term underground storage facility for Finland's spent nuclear fuel. The facility, named "Onkalo" (meaning "small cave" or "cavity") is being built in the granite bedrock at the Olkiluoto site, about five kilometers from the power plants. The municipality of Eurajoki issued a building permit for the facility in August 2003 and excavation began in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Geological Repository
A deep geological repository is a way of storing hazardous or radioactive waste within a stable geologic environment (typically 200–1000 m deep). It entails a combination of waste form, waste package, engineered seals and geology that is suited to provide a high level of long-term isolation and containment without future maintenance. This will prevent any radioactive dangers. A number of mercury, cyanide and arsenic waste repositories are operating worldwide including Canada (Giant Mine) and Germany (potash mines in Herfa-Neurode and Zielitz) and a number of radioactive waste storages are under construction with the Onkalo in Finland being the most advanced. Principles and background Highly toxic waste that cannot be further recycled must be stored in isolation to avoid contamination of air, ground and underground water. Deep geological repository is a type of long-term storage that isolates waste in geological structures that are expected to be stable for millions of years, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CuOFP
Oxygen-free copper (OFC) or oxygen-free high thermal conductivity (OFHC) copper is a group of wrought high-conductivity copper alloys that have been electrolytically refined to reduce the level of oxygen to 0.001% or below. Specification Oxygen-free copper is typically specified according to the ASTM/ UNS database. The UNS database includes many different compositions of high conductivity electrical copper. Of these, three are widely used and two are considered oxygen-free: * C10100 – also known as ''oxygen-free electronic'' (OFE). This is a 99.99% pure copper with 0.0005% oxygen content. It achieves a minimum 101% IACS conductivity rating. This copper is finished to a final form in a carefully regulated, oxygen-free environment. Silver (Ag) is considered an impurity in the OFE chemical specification. This is also the most expensive of the three grades listed here. * C10200 – also known as ''oxygen-free'' (OF). While OF is considered oxygen-free, its conductivity rating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spent Nuclear Fuel
Spent nuclear fuel, occasionally called used nuclear fuel, is nuclear fuel that has been irradiated in a nuclear reactor (usually at a nuclear power plant). It is no longer useful in sustaining a nuclear reaction in an ordinary thermal reactor and depending on its point along the nuclear fuel cycle, it may have considerably different isotopic constituents. The term "fuel" is slightly confusing, as it implies a combustion of some type, which does not occur in a nuclear power plant. Nevertheless, this term is generally accepted. Nature of spent fuel Nanomaterial properties In the oxide fuel, intense temperature gradients exist that cause fission products to migrate. The zirconium tends to move to the centre of the fuel pellet where the temperature is highest, while the lower-boiling fission products move to the edge of the pellet. The pellet is likely to contain many small bubble-like pores that form during use; the fission product xenon migrates to these voids. Some of this xeno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forsmark Nuclear Power Plant
Forsmark Nuclear Power Plant is a nuclear power plant in Forsmark, Sweden that provides 14% of Sweden's total electricity output, and also the site of the Swedish Final repository for radioactive operational waste. It is operated by a company mainly owned by Vattenfall. The radiation monitors at Forsmark were the first outside the Soviet Union to detect the elevated radiation levels resulting from the Chernobyl disaster in April 1986, over 1,000 km away, forcing the Soviet government to publicly acknowledge it after two days of them trying to cover it up. Reactors Forsmark NPP has three Boiling water reactors: * F1 with an ABB Atom BWR 69 at 2928 MW thermal and 1010 MWe net was first grid connection, connected to the grid on 5 June 1980, and commenced commercial operation on 10 December 1980. It has two turbo-alternators. * F2 with an ABB Atom BWR 69 at 3253 MW thermal and 1120 MWe net was first grid connected on 15 December 1980 and commenced commercial operation on 7 Jul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Östhammar
Östhammar is a locality and the seat of Östhammar Municipality, Uppsala County, Sweden with 4,534 inhabitants in 2010. Today Östhammar Municipality is a part of Uppsala County, but the area has historically been a part of Stockholm County. History Östhammar's city status was granted by king Albert in 1368. During this period a castle called Östhammarshus was built, but already in 1434 the castle was burnt down by its Danish vogt, who fled to Denmark over the sea when faced with the Engelbrekt rebellion. By the late 15th century the post-glacial rebound had made it hard to reach Östhammar by boat and its city status was transferred to Öregrund. Östhammar regained its city status in 1538, and moved closer to the sea. In 1651 Östhammar got a town hall, and in 1795 Östhammar was heavily damaged by fire. Between the early 17th century and the middle of the 19th century the fishing of herring played a very important role in Östhammar's economy. Sister cities * Valka Valka ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Language
Swedish ( ) is a North Germanic language spoken predominantly in Sweden and in parts of Finland. It has at least 10 million native speakers, the fourth most spoken Germanic language and the first among any other of its type in the Nordic countries overall. Swedish, like the other Nordic languages, is a descendant of Old Norse, the common language of the Germanic peoples living in Scandinavia during the Viking Era. It is largely mutually intelligible with Norwegian and Danish, although the degree of mutual intelligibility is largely dependent on the dialect and accent of the speaker. Written Norwegian and Danish are usually more easily understood by Swedish speakers than the spoken languages, due to the differences in tone, accent, and intonation. Standard Swedish, spoken by most Swedes, is the national language that evolved from the Central Swedish dialects in the 19th century and was well established by the beginning of the 20th century. While distinct regional varieties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiation And Nuclear Safety Authority
The Radiation and Nuclear Safety Authority ( fi, Säteilyturvakeskus, sv, StrÃ¥lsäkerhetscentralen), often abbreviated as STUK, is a government agency tasked with nuclear safety and radiation monitoring in Finland. The agency is a division of the Ministry of Social Affairs and Health; when founded in 1958 STUK was first charged with inspection of radiation equipment used in hospitals. The agency is also a scientific research and education organization, researching the nature, effects and damaging effects of radiation. The agency currently employs about 320 people, and is led by Petteri Tiippana. The agency works in collaboration with EU and other nearby countries, as part of the European Nuclear Safety Regulators Group (ENSREG), and with the UN organization International Atomic Energy Agency (IAEA) along with the International Commission on Radiological Protection (ICRP). Director generals The director general of Nuclear Safety Authority was Jukka Laaksonen during 1997â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strålsäkerhetsmyndigheten
The Swedish Radiation Safety Authority ( sv, Strålsäkerhetsmyndigheten) is the Swedish government authority responsible for radiation protection. It sorts under the Ministry of the Environment. It was created on 1 July 2008 with the merging of the Swedish Nuclear Power Inspectorate and the Swedish Radiation Protection Authority. It employs 300 people and is located in Stockholm, with an annual budget of about 400 million Swedish krona. Its Director-General is Nina Cromnier. On the first of March 2022, the Swedish Radiation Safety Authority increased their readiness to handle an "radiological emergency" in the wake of Russian invasion of Ukraine On 24 February 2022, in a major escalation of the Russo-Ukrainian War, which began in 2014. The invasion has resulted in tens of thousands of deaths on both sides. It has caused Europe's largest refugee crisis since World War II. An .... References External links Official Website in English Government agencies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Institute Of Technology
The KTH Royal Institute of Technology ( sv, Kungliga Tekniska högskolan, lit=Royal Institute of Technology), abbreviated KTH, is a public research university in Stockholm, Sweden. KTH conducts research and education in engineering and technology and is Sweden's largest technical university. Currently, KTH consists of five schools with four campuses in and around Stockholm. KTH was established in 1827 as the ''Teknologiska institutet (Institute of Technology)'' and had its roots in the ''Mekaniska skolan (School of Mechanics)'' that was established in 1798 in Stockholm. But the origin of KTH dates back to the predecessor of the ''Mekaniska skolan'', the ''Laboratorium mechanicum'', which was established in 1697 by the Swedish scientist and innovator Christopher Polhem. The Laboratorium mechanicum combined education technology, a laboratory, and an exhibition space for innovations. In 1877 KTH received its current name, Kungliga Tekniska högskolan (KTH Royal Institute of Technol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skanska
Skanska AB () is a multinational construction and development company based in Sweden. Skanska is the fifth-largest construction company in the world according to ''Construction Global'' magazine. Notable Skanska projects include renovation of the United Nations Headquarters, the World Trade Center Transportation Hub project, Moynihan Train Hall, 30 St Mary Axe, MetLife Stadium, Mater Dei Hospital, among others. History Aktiebolaget Skånska Cementgjuteriet (Scanian Cement Casting Ltd) was established in Malmö, Sweden, in 1887 by Rudolf Fredrik Berg and started by manufacturing concrete products.Skanska: History It quickly diversified into a construction company and within ten years the company received its first international order. The company played an important role in building Sweden's infrastructure i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
