For the "NRX" series of nuclear thermal rocket designs, see NERVA. For the Neoreactionary movement (NRx), see Dark Enlightenment. For the racing series, see Nitro Rallycross.
NRX (National Research Experimental) was a heavy-water-moderated, light-water-cooled, nuclear research reactor at the Canadian Chalk River Laboratories, which came into operation in 1947 at a design power rating of 10 MW (thermal), increasing to 42 MW by 1954. At the time of its construction, it was Canada's most expensive science facility and the world's most powerful nuclear research reactor.[1]
NRX was remarkable both in terms of its heat output and the number of free neutrons it generated. When a nuclear reactor such as NRX is operating, its nuclear chain reaction generates many free neutrons. In the late 1940s, NRX was the most intense neutron source in the world.
NRX experienced one of the world's first major reactor accidents on 12 December 1952. The reactor began operation on 22 July 1947 under the National Research Council of Canada, and was taken over by Atomic Energy of Canada Limited (AECL) shortly before the 1952 accident. The accident was cleaned up and the reactor restarted within two years. NRX operated for 45 years, then shut down permanently on 30 March 1993.[2] Decommissioning is underway at the Chalk River Laboratories site.
NRX was the successor to Canada's first reactor, ZEEP. Because the operating life of a research reactor was not expected to be very long, in 1948 planning started for construction of a successor facility, the National Research Universal reactor, which started self-sustained operation (or "went critical") in 1957.
^"Scientific Research Helps World War II War Effort - National Research Council Canada". Archived from the original on 2008-02-25. Retrieved 2007-09-06.
^"IAEA Research Reactor Database". Retrieved 2017-10-19.
NRX (National Research Experimental) was a heavy-water-moderated, light-water-cooled, nuclear research reactor at the Canadian Chalk River Laboratories...
Enlightenment, also called the neo-reactionary movement (sometimes abbreviated to NRx), is an anti-democratic, anti-egalitarian, reactionary philosophical and...
nrx or NRX may refer to: Ngomburr language (ISO 639-3: nrx), a supposed extinct Australian Aboriginal language Noadar Dhal railway station (Indian Railways...
1952, when there was a power excursion and partial loss of coolant in the NRX reactor, which resulted in significant damage to the core. The control rods...
for the alt-right. Land disputes that the NRx is a movement, and defines the alt-right as distinct from the NRx. Mark Fisher, a British cultural theorist...
Apimostinel (GATE-202, formerly NRX-1074) is an investigational antidepressant, acting as a novel and selective modulator of the NMDA receptor. It is...
seconds) as the baseline for the NERVA NRX (NERVA Reactor Experiment). Whereas Kiwi was a proof of concept, NERVA NRX was a prototype of a complete engine...
philosophical movement known as the Dark Enlightenment or neoreactionary movement (NRx). One of the most influential terms he first popularized in the political...
research was consolidated at Chalk River Laboratories. On July 22, 1947, the NRX (National Research Experimental) reactor, the most powerful reactor in the...
outside of the United States, which went critical in 1945, followed by the NRX reactor in 1947. He also looked into cosmic rays, the decay of muons, and...
disasters". Power Technology. 7 October 2013. Canadian Nuclear Society (1989) The NRX Incident by Peter Jedicke Archived 21 May 2015 at the Wayback Machine The...
Territory Ethnicity Ngormbur Extinct (date missing) Language family unattested Language codes ISO 639-3 nrx Glottolog ngur1260 AIATSIS N40.1 ELP Ngomburr...
updated 2021 schedule". Racer. June 17, 2021. Retrieved July 6, 2021. "2021 NRX Calendar". June 17, 2021. Archived from the original on July 27, 2021. Retrieved...
Council of Canada (NRC). ZEEP was instrumental in the development of the NRX and NRU reactors, which led to the development of the successful CANDU reactor...
of the Montreal Laboratory, and oversaw the development of the ZEEP and NRX reactors, and the creation of the Chalk River Laboratories. After the war...
Schenectady, New York. On December 12, 1952, an accident with the experimental NRX reactor at Atomic Energy of Canada's Chalk River Laboratories caused a partial...
fundamentally a Canadian design, significantly advanced from NRX. It was built as the successor to the NRX reactor at the Atomic Energy Project of the National...
September 1945; ZEEP remained in use by researchers until 1970. A larger 10 MW NRX reactor, which was designed during the war, was completed and went critical...
NOA Norontair NORONTAIR Canada HMF Norrlandsflyg LIFEGUARD SWEDEN Sweden NRX Norse Air Charter NORSE AIR South Africa N0 NBT Norse Atlantic Airways LONGSHIP...
The small ZEEP went critical on 5 September 1945, and the larger NRX on 21 July 1947. NRX was for a time the most powerful research reactor in the world...
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