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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 Nuclear energy may refer to: *Nuclear power, the use of sustained nuclear fission or nuclear fusion to generate heat and electricity * Nuclear binding energy, the energy needed to fuse or split a nucleus of an atom *Nuclear potential 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 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&n ...
, Necsa also operates the
Vaalputs Vaalputs is the only South African radioactive waste-disposal facility, called the ''Vaalputs Radioactive Waste Disposal Facility'', operated by NECSA. The facility is located about 100 km south-east of Springbok, in the Northern Cape. It cov ...
radioactive waste disposal Radioactive waste disposal may refer to: *High-level radioactive waste management * Low-level waste disposal *Ocean disposal of radioactive waste **Ocean floor disposal *Deep borehole disposal *Deep geological repository See also * Radioactive wast ...
facility. The corporation also serves the State's other nuclear institutional obligations. The chief executive officer of Necsa is Mr. Phumzile Tshelane since 1 September 2012. Necsa is organisationally divided into a commercial group, Pelindaba Technology (PT), which conducts business in a variety of products and markets and another group, Pelindaba Nuclear Institute (PNI), which is concerned with statutory functions, R&D, support and facility operations. Pelindaba Technology (PT) is a portfolio of businesses of which Nuclear Technology Products (NTP) is a division and serves the international markets for radiation-based technology and products. Also, the Uranium Enrichment Corporation of South Africa, Ltd. (UCOR) which operated a facility at
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 ...
(known as the 'Y' plant) to produce HEU. Necsa employs some 1,400 people in diverse areas such as
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
,
engineering Engineering is the use of scientific method, scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad rang ...
,
chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
and
electronics The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification ...
. With changes in the country's positioning on nuclear involvement and South Africa's re-entry into world markets in 1990, a decision was taken to focus the organisation on commercially driven projects. Today, Necsa supplies a wide range of products and services to South African and foreign market sectors with the
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 En ...
reactor as the cornerstone of the commercial
isotope 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) ...
production programme. This research reactor at
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&n ...
,
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 En ...
produces medical isotopes such as
Molybdenum-99 Molybdenum (42Mo) has 33 known isotopes, ranging in atomic mass from 83 to 115, as well as four metastable nuclear isomers. Seven isotopes occur naturally, with atomic masses of 92, 94, 95, 96, 97, 98, and 100. All unstable isotopes of molybdenum ...
which are sold globally by the NTP. The NTP Radioisotopes Group had sales of 1.222 billion ZAR (€75M) in 2016.


History

The 20 MW
research reactor Research reactors are nuclear fission-based nuclear reactors that serve primarily as a neutron source. They are also called non-power reactors, in contrast to power reactors that are used for electricity production, heat generation, or maritim ...
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 En ...
was initially used for high level
nuclear physics Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies the ...
research programmes and was commissioned in 1965. In the 1970s and 1980s, amid reduced output due to embargo of international fuel supply, the focus of activities at Pelindaba was on the exploitation of South Africa's
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 weak ...
resources through the successful design, construction and commissioning of commercial
uranium hexafluoride Uranium hexafluoride (), (sometimes called "hex") is an inorganic compound with the formula UF6. Uranium hexafluoride is a volatile white solid that reacts with water, releasing corrosive hydrofluoric acid. The compound reacts mildly with alumin ...
,
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 ...
, and
nuclear fuel Nuclear fuel is material used in nuclear power stations to produce heat to power turbines. Heat is created when nuclear fuel undergoes nuclear fission. Most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing ...
assembly production facilities. In 1993 focus shifted to commercial operations and over the following years typical output increased back to 20MW. Since 2009 the reactor has operated solely on
low enriched uranium 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 ...
fuel. In December 2018 the South African government replaced all members of the Necsa board, giving as reasons failures in its statutory duties, failure to adhere to shareholder instructions, financial mismanagement, remuneration irregularities and failing to restore its radioisotope manufacturing facility on schedule. This included signing Memoranda of Understanding with foreign companies against express instructions of the government.


See also

*
Helikon vortex separation process The Helikon vortex separation process is an aerodynamic uranium enrichment process designed around a device called a vortex tube. Paul Dirac thought of the idea for isotope separation and tried creating such a device in 1934 in the lab of Peter Ka ...
*
Nuclear fuel cycle The nuclear fuel cycle, also called nuclear fuel chain, is the progression of nuclear fuel through a series of differing stages. It consists of steps in the ''front end'', which are the preparation of the fuel, steps in the ''service period'' in w ...
*
Nuclear reprocessing Nuclear reprocessing is the chemical separation of fission products and actinides from spent nuclear fuel. Originally, reprocessing was used solely to extract plutonium for producing nuclear weapons. With commercialization of nuclear power, the ...
*
South Africa and weapons of mass destruction From the 1960s to the 1990s, South Africa pursued research into weapons of mass destruction, including nuclear, biological, and chemical weapons under the apartheid government. Six nuclear weapons were assembled. South African strategy was, if ...


References


External links


South African Nuclear Energy Corporation (NECSA) Web site

Nuclear Liabilities Management
a division of NECSA tasked with
Nuclear Waste Radioactive waste is a type of hazardous waste that contains radioactive material. Radioactive waste is a result of many activities, including nuclear medicine, nuclear research, nuclear power generation, rare-earth mining, and nuclear weapons r ...
management
NTP Radioisotopes
a division of NECSA involved in the production and distribution of


Further reading

* Fig, David (2005). "Uranium Road: Questioning South Africa's Nuclear Direction", Jacana Media. {{Authority control Economy of Gauteng Nuclear technology companies of South Africa Nuclear power companies of South Africa