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Valindaba
The Valindaba site, also known as Pelindaba East or Y-plant, was an experimental uranium enrichment plant, located 35 km west of Pretoria, Gauteng province, South Africa. Valindaba is a Zulu word that means "about this we do not speak at all". The plant's name is consistent with the South African government's policy of official secrecy that concealed the plant's role in nuclear weapons production. History The South African government announced in July 1970, that it was able to enrich uranium by means of the Helikon vortex separation process, by means of a jet-nozzle to accumulate the uranium 235 isotope. It was a variation of a method developed by Erwin Becker in Karlsruhe, Germany. West German firm Steinkohlen-Elektrizitats (STEAG) facilitated the transfer of the German process to the South Africans. Y-Plant was completed in 1975 by the Uranium Enrichment Corporation of South Africa (UCOR) and started producing HEU in 1978. During the 1970s, it was speculated that Valind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAFARI-1
SAFARI-1 is a 20 MW light water-cooled, beryllium reflected, pool-type research reactor, initially used for high level nuclear physics research programmes and was commissioned in 1965. The reactor is owned and operated by South African Nuclear Energy Corporation (NECSA) at their facility in Pelindaba, South Africa. The reactor is a tank in pool type reactor and is designed to run on enriched uranium. Currently the fuel in use is the remains of the decommissioned South African nuclear weapons. History The reactor was built in cooperation with the Atoms for Peace program run by the US DOE in the 1950s and '60s. Planning started in 1960 and construction occurred between 1961 and 1965. In March 1965 the reactor was commissioned and initially operated at 6.75 MW, a limitation imposed by the capacity of the secondary cooling circuit. Output was increased to 20 MW in 1968 after the secondary cooling circuit was upgraded. Initially the reactor was fueled with HEU supplied by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelindaba
Pelindaba ("Pelile Ndaba", Zulu for "end of story" or "the conclusion") is South Africa's main nuclear research centre, run by the South African Nuclear Energy Corporation. It is situated near the Hartbeespoort Dam, approximately 33 km (22 miles) west of Pretoria, on the farm that once belonged to Gustav Preller. During the apartheid era, it was the location where South Africa's atomic bombs were partially developed and constructed. History The research reactor SAFARI-1 was received from the U.S., constructed and inaugurated in 1965. Since then, it has operated with an output of up to 20 MW. The reactor cost $10.5 million. Enriched uranium for use in the reactor was initially supplied by the U.S. and has been subject to IAEA safeguards. At the time of Pelindaba's inauguration, future cooperation between France and South Africa on nuclear technology was anticipated. That relationship ultimately lead to the establishment of the Koeberg Nuclear Power Station. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NECSA
The South African Nuclear Energy Corporation (Necsa) was established as a public company by the Republic of South Africa Nuclear Energy Act in 1999 and is wholly owned by the State. The name is correctly indicated above, although the sequence of letters in the acronym may be taken as suggesting that the name should be the "Nuclear Energy Corporation of South Africa". Operations Necsa replaced the country's Atomic Energy Corporation. Apart from several ancillary functions, the main functions of Necsa are to undertake and promote research and development in the field of nuclear energy and related technologies; to process and store nuclear material and other restricted material; and to co-ordinate with other organisations in matters falling within these spheres. Apart from its main operations at Pelindaba, Necsa also operates the Vaalputs radioactive waste disposal facility. The corporation also serves the State's other nuclear institutional obligations. The chief executive off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Enrichment
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2739–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7202%), and uranium-234 (234U, 0.0050–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation. There are about 2,000 tonnes of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FW De Klerk
Frederik Willem de Klerk (, , 18 March 1936 – 11 November 2021) was a South African politician who served as state president of South Africa from 1989 to 1994 and as deputy president from 1994 to 1996 in the democratic government. As South Africa's last head of state from the era of white-minority rule, he and his government dismantled the apartheid system and introduced universal suffrage. Ideologically a conservative and an economic liberal, he led the National Party (NP) from 1989 to 1997. Born in Johannesburg to an influential Afrikaner family, de Klerk studied at Potchefstroom University before pursuing a career in law. Joining the NP, to which he had family ties, he was elected to parliament and sat in the white-minority government of P. W. Botha, holding a succession of ministerial posts. As a minister, he supported and enforced apartheid, a system of racial segregation that privileged white South Africans. After Botha resigned in 1989, de Klerk replaced him, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. In nature, uranium is found as uranium-238 (99. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotope Separation Facilities
Isotopes are two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei. While all isotopes of a given element have almost the same chemical properties, they have different atomic masses and physical properties. The term isotope is formed from the Greek roots isos ( ἴσος "equal") and topos ( τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. It was coined by Scottish doctor and writer Margaret Todd in 1913 in a suggestion to the British chemist Frederick Soddy. The number of protons within the atom's nucleus is called its atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economy Of Gauteng
The Gauteng Province's total GDP for 2010 was R811 billion, making the province the single largest contributor to South Africa's GDP with a contribution of 33.8%, despite having only 1.4% of South Africa's land area. Gauteng also generates approximately 10% of the entire African continent's GDP. Gauteng's Gini coefficient of 0.62 makes it more equal than South Africa (the Gini coefficient of which is 0.63 (2014)) as a whole, although this is still a very high figure by international standards. The cities Johannesburg, Midrand and Pretoria, which are all economic powerhouses, and Vanderbijlpark, which is an industrial powerhouse, are all in Gauteng. Gauteng is home to the Johannesburg Stock Exchange, the largest stock exchange in Africa, as well as the head offices of over 140 local and international banks. Some of the largest companies in Africa and abroad are based in Gauteng, or have offices and branches there, such as Vodacom, MTN, Neotel, Microsoft South Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Gauteng
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IAEA
The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to promote the peaceful use of nuclear energy and to inhibit its use for any military purpose, including nuclear weapons. It was established in 1957 as an autonomous organization within the United Nations system; though governed by its own founding treaty, the organization reports to both the General Assembly and the Security Council of the United Nations, and is headquartered at the UN Office at Vienna, Austria. The IAEA was created in response to growing international concern toward nuclear weapons, especially amid rising tensions between the foremost nuclear powers, the United States and the Soviet Union. U.S. President Dwight D. Eisenhower's " Atoms for Peace" speech, which called for the creation of an international organization to monitor the global proliferation of nuclear resources and technology, is credited with catalyzing the formation of the IAEA, whose treaty came int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armscor (South Africa)
Armscor (stylized as ARMSCOR), the Armaments Corporation of South Africa is the arms procurement agency of the South African Department of Defence. It was originally established in 1968 as an arms production company, primarily as a response to the international sanctions by the United Nations against South Africa due to apartheid which began in 1963 and were formalised in 1977. History Until the 1970s, South Africa's apartheid government had placed a disproportionate emphasis on civilian law enforcement and the maintenance of internal security. However, a Cuban intervention in Angola, and the escalation of the South African Border War convinced the government that it faced a serious external threat. In 1978, the premiership was accepted by PW Botha, a former South African security chief, and defence expenditure spiraled upwards. Armscor, then a relatively new entity, was charged with modernising the arsenal of the South African Defence Force (SADF). This was a difficult tas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Proliferation Treaty
The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament and general and complete disarmament. Between 1965 and 1968, the treaty was negotiated by the Eighteen Nation Committee on Disarmament, a United Nations-sponsored organization based in Geneva, Switzerland. Opened for signature in 1968, the treaty entered into force in 1970. As required by the text, after twenty-five years, NPT Parties met in May 1995 and agreed to extend the treaty indefinitely. More countries are parties to the NPT than any other arms limitation and disarmament agreement, a testament to the treaty's significance. As of August 2016, 191 states have become parties to the treaty, though North Korea, which acceded in 1985 but n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
