# Rapsodie

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Retired experimental nuclear reactor in France

Not to be confused with [Rhapsody (disambiguation)](/source/Rhapsody_(disambiguation)).

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**Rapsodie** was an experimental [nuclear reactor](/source/Nuclear_reactor) built in [Cadarache](/source/Cadarache) in [France](/source/France).

It was France's first fast reactor, and first achieved criticality in 1967. Rapsodie was a sodium-cooled fast neutron [loop-type reactor](/source/Loop_type_LMFBR) with a thermal output of 40MW and no electrical generation facilities, and closed in 1983.[1]

Rapsodie was operated in conditions considered representative of a commercial plant in terms of temperatures (inlet 400 °C (752 °F), outlet 550 °C (1,022 °F)) and neutron flux (3.2e15n/cm^2/s), and served to prove many elements used in later, larger, [breeder reactors](/source/Breeder_reactor).

Rapsodie operated for 15 years, and suffered two leaks, a sodium micro leak in 1978 that was so small it was never found, and a nitrogen gas leak in 1982.[2]

Rapsodie is currently in Stage 2 decommissioning.

## See also

- [Fast neutron reactor](/source/Fast_neutron_reactor)

## References

1. **[^](#cite_ref-1)** ["Decommissioning of LMRs in France"](https://web.archive.org/web/20150402132154/http://www.iaea.org/OurWork/ST/NE/NEFW/CEG/documents/ws102003_michaille1-e.pdf) (PDF). Archived from [the original](http://www.iaea.org/OurWork/ST/NE/NEFW/CEG/documents/ws102003_michaille1-e.pdf) (PDF) on 2015-04-02. Retrieved 2015-04-01.

1. **[^](#cite_ref-2)** ["Sodium fast reactors overview"](http://www.tesionline.com/__PDF/23539/23539p.pdf) (PDF). *www.tesionline.com*.

[43°40′36″N 5°46′22″E / 43.6766°N 5.7727°E / 43.6766; 5.7727](https://geohack.toolforge.org/geohack.php?pagename=Rapsodie&params=43.6766_N_5.7727_E_source:wikidata)

v t e Nuclear power in France Power plants Active Belleville Blayais Bugey Cattenom Chinon Chooz Civaux Cruas Dampierre Flamanville Golfech Gravelines Nogent Paluel Penly Saint-Alban Saint-Laurent Tricastin (Saint-Paul-Trois-Châteaux) Closed Brennilis Bugey 1 Chinon (A1/A2/A3) Chooz A Creys-Malville SPX (Superphénix) Fessenheim Marcoule Saint-Laurent (A1/A2) Reactor types Power plant reactors UNGG CP0, CP1, CP2, CPY P4, P'4 N4 EPR Research, experimental, prototype reactors and concepts EL-1 (Zoé) EL-2, EL-3 (CEA Paris-Saclay) TFR EL-4 (Brennilis) Rapsodie Phénix Superphénix JHR (under construction) ITER (under construction) ASTRID Flexblue (concept) Research locations CEA Cadarache CEA Fontenay-aux-Roses CEA Grenoble Institut Laue–Langevin (Grenoble) CEA Marcoule (Marcoule, Pierrelatte) CEA Saclay Meuse/Haute Marne Underground Research Laboratory (Andra) Tricastin Nuclear Site (Bollène, Lapalud, Pierrelatte, Saint-Paul-Trois-Châteaux) Fuel cycle locations Malvési Tricastin Eurodif Romans (fr) La Hague Manche Organisations ANCCLI Andra Areva Naval Group (formerly DCNS) ASNR ASN IRSN CEA Électricité de France (EDF) Framatome (formerly Areva NP) Orano Orano Cycle (formerly COGEMA and Areva NC) Public discourse and opposition Accidents and incidents Anti-nuclear movement in France 1999 Blayais Nuclear Power Plant flood Death of Sébastien Briat Corinne Lepage Stéphane Lhomme Mycle Schneider Monique Sené Dominique Voynet Yves Marignac Solange Fernex CRIIRAD Groupement des scientifiques pour l'information sur l'énergie nucléaire Sortir du nucléaire Related categories Nuclear power in France Nuclear power stations in France Nuclear technology in France List of nuclear reactors in France

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Adapted from the Wikipedia article [Rapsodie](https://en.wikipedia.org/wiki/Rapsodie) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Rapsodie?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.