Monju (もんじゅ) was a Japanese sodium-cooled fast reactor, located near the Tsuruga Nuclear Power Plant, Fukui Prefecture. Its name is a reference to Manjusri. Construction started in 1986 and the reactor achieved criticality for the first time in April 1994. The reactor has been inoperative for most of the time since it was originally built.

Case 1 of Teaching Case Studies of Accidents in Nuclear Energy Development in Japan describes a fire caused by a massive sodium coolant leak at the Monju fast breeder reactor.

Following a programmed shutdown, Monju restarted operation on December 6, 1995. On December 8, while power was being raised for a plant trip test as part of the 40% electric power test (thermal power 43%), a high sodium temperature alarm at the outlet of the IHX in SHTS Loop C

2022年1月1日 · The prototype fast breeder reactor “Monju” is a loop-type sodium-cooled fast neutron reactor with an electric power of 300 MW developed in Japan. The initial criticality was achieved in 1994, and the reactor power reached 40% of the rated power in 1995.

2000年10月1日 · Monju is Japan's prototype fast breeder reactor: 280 MWe (714 MWt), fueled with mixed oxides of plutonium and uranium, cooled by liquid sodium. Construction was started in 1985 and initial criticality was attained in April 1994. On 8th December 1995, sodium leakage from a secondary circuit occurred in a piping room of the reactor auxiliary ...

As a part of the work for investigating the sodium leak accident which occurred in Monju on December 8, 1995, three tests, (1) sodium leak test, (2) sodium fire test-I, and (3) sodium fire test-II, were carried out at OEC/PNC. Main objectives of these tests are to confirm leak and burning

Molten sodium leaked from the "Monju" prototype fast breeder reactor, and a fire occurred. In circulation piping of molten sodium, an inserted thermo-well was vibrated by a symmetrical vortex, and it was broken by high-cycle fatigue.

2011年10月6日 · Monju, which is designed to burn the world’s deadliest substance, plutonium, had been shut down since a December 1995 accident in which a secondary cooling pipe burst. Liquid sodium coolant leaked out and, as sodium burns when it …

2010年5月6日 · Japan's Atomic Energy Agency says it has restarted a controversial nuclear reactor, more than 14 years after its operations were suspended. A spokesman for the agency said work began at the...

2017年1月3日 · Japan has finally pulled the plug on Monju, an experimental fast breeder nuclear reactor that has been plagued by accidents, cover-ups and cost overruns. But why did Monju fail and is there still a future for fast breeder technology? Molly Lempriere finds out.