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, nuclear decommissioning, rare-earth mining, and nuclear weapons reprocessing. The storage and disposal of radioactive waste is regulated by government agencies in order to protect human health and the environment.
Sellafield, formerly known as Windscale, is a large multi-function nuclear site close to Seascale on the coast of Cumbria, England. As of August 2022, primary activities are nuclear waste processing and storage and nuclear decommissioning. Former activities included nuclear power generation from 1956 to 2003, and nuclear fuel reprocessing from 1952 to 2022.
High-level waste (HLW) is a type of nuclear waste created by the reprocessing of spent nuclear fuel. It exists in two main forms:
The New Safe Confinement is a structure put in place in 2016 to confine the remains of the number 4 reactor unit at the Chernobyl Nuclear Power Plant, in Ukraine, which was destroyed during the Chernobyl disaster in 1986. The structure also encloses the temporary Shelter Structure (sarcophagus) that was built around the reactor immediately after the disaster. The New Safe Confinement is designed to prevent the release of radioactive contaminants, protect the reactor from external influence, facilitate the disassembly and decommissioning of the reactor, and prevent water intrusion.
A deep geological repository is a way of storing hazardous or radioactive waste within a stable geologic environment, typically 200–1,000 m below the surface of the earth. 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 is intended to prevent radioactive dangers. A number of mercury, cyanide and arsenic waste repositories are operating worldwide including Canada and Germany. Radioactive waste storage sites are under construction with the Onkalo in Finland being the most advanced.
The electricity sector in Sweden has three operational nuclear power plants with 6 operational nuclear reactors, which produce about 29.8% of the country's electricity. The nation's largest power station, Forsmark Nuclear Power Plant, has three reactors producing 3.3 GW and 14% of Sweden's electricity.
Nuclear decommissioning is the process leading to the irreversible complete or partial closure of a nuclear facility, usually a nuclear reactor, with the ultimate aim at termination of the operating licence. The process usually runs according to a decommissioning plan, including the whole or partial dismantling and decontamination of the facility, ideally resulting in restoration of the environment up to greenfield status. The decommissioning plan is fulfilled when the approved end state of the facility has been reached.
The Monti Aurunci is a mountain range of southern Lazio, in central Italy. It is part of the Antiappennini, a group running from the Apennines chain to the Tyrrhenian Sea, where it forms the promontory of Gaeta. It is bounded to the north-west by the Ausoni Mountains, to the north by the Liri river, to the east by the Ausente, to the south-east by the Garigliano and to the south by the Tyrrhenian sea. The line between the Aurunci and the Ausoni has not been clearly established but the Aurunci are considered by convention to be east of a line through Fondi, Lenola, Pico, S. Giovanni and Incarico. Altitudes vary from hills to the 1,533 m of Monte Petrella. Main peaks include the Redentore (1,252 m) and Monte Sant'Angelo (1,402 m). They include a regional park, the Parco Naturale dei Monti Aurunci, created in 1997.
La Crosse Boiling Water Reactor (LACBWR) was a boiling water reactor (BWR) nuclear power plant located near La Crosse, Wisconsin in the small village of Genoa, in Vernon County, approximately 17 miles south of La Crosse along the Mississippi River. It was located directly adjacent to the coal-fired Genoa Station #3. The site is owned and was operated by Dairyland Power Cooperative (Dairyland). Although the reactor has been demolished and decommissioned, spent nuclear fuel is still stored at the location.
Dodewaard nuclear power plant was a nuclear power plant with a 55 MWe boiling water reactor (BWR) of General Electric in the Dutch town of Dodewaard. The plant halted energy production in 1997. Its final decommissioning has been postponed for a period of 40 years and the plant was placed into a safe enclosure configuration in 2005.
Nuclear power in Switzerland is generated by three nuclear power plants, with a total of four operational reactors (see list below). Since 1985, nuclear power has been contributing approximately 40% of Switzerland's electrical energy. In 2022, it produced 23 terawatt-hours (TWh) of electricity, and accounted for 37% of the nation's gross electricity generation of 62 TWh, while 55% was produced by hydroelectric plants and 8% came from conventional thermal power stations and non-hydro renewable energy sources.
Nuclear power in Italy is a controversial topic. Italy started to produce nuclear energy in the early 1960s, but all plants were closed by 1990 following the 1987 referendum. As of 2023, Italy is one of only three countries, along with Lithuania and Germany, that completely phased out nuclear power for electricity generation after having operational reactors.
Spain has five active nuclear power plants with seven reactors producing 20% of the country's electricity as of 2023.
Nuclear entombment is a method of nuclear decommissioning in which radioactive contaminants are encased in a structurally long-lived material, such as concrete. This prevents radioactive material and other contaminated substances from being exposed to human activity and the environment. Entombment is usually applied to nuclear reactors, but also some nuclear test sites. Nuclear entombment is the least used of three methods for decommissioning nuclear power plants, the others being dismantling and deferred dismantling. The use of nuclear entombment is more practical for larger nuclear power plants that are in need of both long and short term burials, as well as for power plants which seek to terminate their facility licenses. Entombment is used on a case-by-case basis because of its major commitment with years of surveillance and complexity until the radioactivity is no longer a major concern, permitting decommissioning and ultimate unrestricted release of the property. Considerations such as financial backing and the availability of technical know-how are also major factors.
Nuclear power in the European Union accounted for approximately 26% of total electricity production in 2019 and nearly half of low-carbon energy production across the EU.
High-level radioactive waste management addresses the handling of radioactive materials generated from nuclear power production and nuclear weapons manufacture. Radioactive waste contains both short-lived and long-lived radionuclides, as well as non-radioactive nuclides. In 2002, the United States stored approximately 47,000 tonnes of high-level radioactive waste.
The Morsleben Radioactive Waste Repository is a deep geological repository for radioactive waste in the Bartensleben rock salt mine in Morsleben, Börde District, in the federal state of Saxony-Anhalt, Germany.
NUKEM Technologies GmbH is a nuclear engineering and consulting company managing radioactive waste and spent fuel and decommissioning of nuclear facilities. The company is located in Alzenau, Germany. It was established in 2006 as a subsidiary of Nukem Energy. On 14 December 2009, Nukem Technologies was sold to Russian Atomstroyexport for €23.5 million.
The Low-Level Radioactive Waste Storage Site, formerly Lanyu Storage Site, is a facility to store all of the nuclear waste produced by three nuclear power plants in the Republic of China in Lanyu Island, Taitung County. It is owned and operated by Taipower.
SOGIN is an Italian state-owned enterprise responsible for nuclear decommissioning as well as management and disposal of radioactive waste produced by industrial, research and medical processes. Founded in 1999 following the 1987 Italian referendums on nuclear power, SOGIN was originally part of state owned ENEL but became independent, but still government owned, in 2000. The company initially took over the Caorso, Enrico Fermi, Garigliano and Latina nuclear power plants, later adding other sites including ENEA's EUREX. The company has commenced the decommissioning of all the plants and is predicted to complete the work in 2036. The company has been involved in environmental remediation, radioactive waste management and nuclear safety work in Armenia, Bulgaria, China, Czech Republic, France, Kazakhstan, Lithuania, Romania, Russia, Slovakia and the Ukraine. SOGIN also undertakes other decontamination work and in 2005 started to help to decommission nuclear submarines of the Russian Navy.
