The UNGG (Uranium Naturel Graphite Gaz) is an obsolete nuclear power reactor design developed in France. It was graphite moderated, cooled by carbon dioxide...

graphite-moderated nuclear reactors have been used in commercial electricity generation: Gas-cooled reactors Magnox UNGG reactor Advanced gas-cooled reactor (AGR) Water-cooled...

gas-cooled reactor (AGR), an improved Generation II gas cooled reactor. In France, the UNGG was replaced by the pressurized water reactor (PWR). Gas-cooled...

contrasted to generation I reactors, which refer to the early prototype of power reactors, such as Shippingport, Magnox/UNGG, AMB, Fermi 1, and Dresden...

The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator;...

A boiling water reactor (BWR) is a type of nuclear reactor used for the generation of electrical power. It is the second most common type of electricity-generating...

build the UNGG itself: By participating in a British high-temperature gas reactor prototype (Dragon) in 1964. Building an experimental reactor moderated...

all being pressurized water reactors. The 5th reactor (unit 1) is currently being dismantled. It was the last UNGG reactor built in the world. Some of...

The small modular reactor (SMR) is a class of small nuclear fission reactor, designed to be built in a factory, shipped to operational sites for installation...

A pressurized water reactor (PWR) is a type of light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with...

Generation IV (Gen IV) reactors are nuclear reactor design technologies that are envisioned as successors of generation III reactors. The Generation IV International...

natural nuclear fission reactor is a uranium deposit where self-sustaining nuclear chain reactions occur. The idea of a nuclear reactor existing in situ within...

pressurized water reactors (each 900MWe), which began operation in 1983. They are cooled by the water of the Loire River. Two retired UNGG reactors exist at the...

commercial nuclear reactors in the world, sorted by country, with operational status. The list only includes civilian nuclear power reactors used to generate...

Spain. Unit one was a 508 MWe carbon dioxide gas cooled reactor modeled on the UNGG reactor at the Saint Laurent Nuclear Power Plant in France. It was...

reactor") is a class of graphite-moderated nuclear power reactor designed and built by the Soviet Union. It is somewhat like a boiling water reactor as...

first generation French UNGG reactors, all of which have been shut down. Since then, it has also operated two heavy water reactors to produce tritium. Cooling...

plants in France were three UNGG reactors at the Marcoule Nuclear Site between 1956 and 1960, followed by the Chinon reactors in Avoine from 1962. As a...

A pressurized heavy-water reactor (PHWR) is a nuclear reactor that uses heavy water (deuterium oxide D2O) as its coolant and neutron moderator. PHWRs...

19 October 1989. At the end of Francoist Spain, France sold Spain a UNGG reactor. This already obsolete energy technology was installed because as a by-product...

A fast-neutron reactor (FNR) or fast-spectrum reactor or simply a fast reactor is a category of nuclear reactor in which the fission chain reaction is...

metal cooled nuclear reactor (LMR) is a type of nuclear reactor where the primary coolant is a liquid metal. Liquid metal cooled reactors were first adapted...

pebble-bed reactor (PBR) is a design for a graphite-moderated, gas-cooled nuclear reactor. It is a type of very-high-temperature reactor (VHTR), one...

CANDU (CANada Deuterium Uranium) is a Canadian pressurized heavy-water reactor design used to generate electric power. The acronym refers to its deuterium...

A breeder reactor is a nuclear reactor that generates more fissile material than it consumes. These reactors can be fueled with more-commonly available...

The liquid fluoride thorium reactor (LFTR; often pronounced lifter) is a type of molten salt reactor. LFTRs use the thorium fuel cycle with a fluoride-based...

first generation of French plants, of UNGG-type (similar to the Magnox design), which have now closed. These reactors were named EDF1, EDF2, EDF3 and were...

In Europe, this reactor design was called European Pressurised Reactor, and the internationalised name was Evolutionary Power Reactor, but it has been...

station. In 1967 a board of inquiry initially laid out plans for two UNGG reactors with an output of 800 MWe each. Due to falling petroleum prices and...

UNGG reactors: CO2-cooled, graphite-moderated, natural uranium fuel reactors of French design. Operated 1966 - 1994. BN-350; BN-600 & BN-800 reactors:...