Snabba neutronreaktorer (FNR, fast neutron reactor) har varit i drift tidigare (särskilt natriumkylda snabba reaktorer i Europa), men med dagens säkerhetskrav, 

Jul 29, 2020 Russian state nuclear corporation Rosatom will help Kazakhstan decommission the BN-350 fast neutron reactor at the shutdown Aktau nuclear 

Years of operation 1959-2002. BN-350, constructed by the Soviet Union in Shevchenko (today's Aqtau) on the Caspian Sea, 130 MWe plus 80,000 tons of fresh water per day. Thermal Reactor Fast Reactor; In thermal reactors, the fission chain reaction is sustained by the thermal neutrons that have energy of 0.025eV and velocity of 2.2km/s. In fast reactors, the chain reaction is sustained by fast neutrons that have energy of 1 – 10MeV and velocity of around 50,000km/s. The first fast neutron reactor that supplied electricity at an industrial scale was the French breeder Superphenix. It was stopped in 1997 more for political than technical reasons.

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BR-5 - research fast neutron reactor at the Institute of Physics and Energy in Obninsk. Years of operation 1959-2002. BN-350, constructed by the Soviet Union in Shevchenko (today's Aqtau) on the Caspian Sea, 130 MWe plus 80,000 tons of fresh water per day. Thermal Reactor Fast Reactor; In thermal reactors, the fission chain reaction is sustained by the thermal neutrons that have energy of 0.025eV and velocity of 2.2km/s. In fast reactors, the chain reaction is sustained by fast neutrons that have energy of 1 – 10MeV and velocity of around 50,000km/s.

av P Andersson · 2014 · Citerat av 1 — under reactor-relevant conditions. By deploying portable neutron generators in transmission tomography, the technique becomes applicable to 

Its power was just 100 kW, it was fueled by metallic plutonium and cooled by mercury. Just a few months after the start of operations in 1955, mercury revealed itself as a terrible coolant for a reactor. In contrast to most normal nuclear reactors, however, a fast reactor uses a coolant that is not an efficient moderator, such as liquid sodium, so its neutrons remain high-energy.

Talrika exempel på översättningar klassificerade efter aktivitetsfältet av “fast neutron reactor” – Engelska-Svenska ordbok och den intelligenta 

Snabbneutronreaktor - Fast-neutron reactor En sådan reaktor behöver ingen neutronmoderator , men kräver bränsle som är relativt rikt på klyvbart material  av L Devell · 1995 — som står för fast breeder reactor) har följts översiktligt under året. Snabba (omodererade) neutroner, vilket är grundläggande för god neutron-. There is no neutron moderator, as the chain reaction is sustained by fast Heavy water is used as a neutron moderator and coolant for nuclear reactors.

A fast neutron reactor or simply a fast reactor is a category of nuclear reactor in which the fission chain reaction is sustained by fast neutrons. Such a reactor needs no neutron moderator, but must use fuel that is relatively rich in fissile material when compared to that required for a thermal reactor.
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This power level is the minimum necessary to achieve the desired rate of neutron production.

Ansvarig kommitté: IEC TC 45 - Nuclear instrumentation.
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BR-5 - research fast neutron reactor at the Institute of Physics and Energy in Obninsk. Years of operation 1959-2002. BN-350, constructed by the Soviet Union in Shevchenko (today's Aqtau) on the Caspian Sea, 130 MWe plus 80,000 tons of fresh water per day.

Application of (Pu,Zr)N fuel permits the design of a core with very  Nuclear reactor kinetics-book. obtainable by some methods when predicting neutron and gamma ray attenuation and fast neutron spectrum in reactor shields. Svensk översättning av 'fast neutron' - engelskt-svenskt lexikon med många fler will be absorbed by the reactor blanket, which would become hot and heat  av H Forsström · 2013 — the risks for diversion of nuclear weapons material from the fast reactor fuel cycle, Uran-238 kan dock absorbera en neutron och omvandlas till plutonium-239,  The FANTOM system is a tabletop sized fast-neutron radiography and Water Reactor thermal-hydraulic studies using a portable fusion neutron generator. Deals in particular with measurements: of neutron fluence rate (flux); of residual activity; of the temperature, flow rate, activity and purity of the sodium (or other  Avhandlingar om SODIUM COOLED FAST REACTOR. Sök bland 100176 Development of a Neutron Flux Monitoring System for Sodium-cooled Fast Reactors. Light-ion production in the interaction of 96 MeV neutrons with carbon and benchmarks for nuclear data uncertainty propagation on a lead fast reactor's safety  av L Oliver · 2002 — fast reactor FRO. Part 2.

But in a fast reactor, you don't have a material that slows down those neutrons. So, they remain high-energy, and that has different properties than light-water reactors. In fact, some of the advantages that the developers of these reactors claim, stems from this property of having fast neutrons.

Application of (Pu,Zr)N fuel permits the design of a core with very  Nuclear reactor kinetics-book. obtainable by some methods when predicting neutron and gamma ray attenuation and fast neutron spectrum in reactor shields. Svensk översättning av 'fast neutron' - engelskt-svenskt lexikon med många fler will be absorbed by the reactor blanket, which would become hot and heat  av H Forsström · 2013 — the risks for diversion of nuclear weapons material from the fast reactor fuel cycle, Uran-238 kan dock absorbera en neutron och omvandlas till plutonium-239,  The FANTOM system is a tabletop sized fast-neutron radiography and Water Reactor thermal-hydraulic studies using a portable fusion neutron generator.

en They will therefore have to be replaced by reactors incorporating new designs: high-temperature reactors, new pressurised water reactors and new fast neutron reactors. Nuclear reactor that uses slow or thermal neutrons. ("Thermal" does not mean hot in an absolute sense, but means in thermal equilibrium with the medium it is interacting with, the reactor's fuel, moderator and structure, which is much lower energy than the fast neutrons initially produced by fission.) The use of fast neutrons in 'fast reactors' allows for the production of more fissile nuclei than are destroyed, as the absorption of at least one neutron per fission  A Fast Breeder Reactor (FBR) is a nuclear reactor that uses fast neutron to generate more nuclear fuels than they consume while generating power, dramatically  Nov 24, 2015 A fast neutron reactor or simply a fast reactor is a category of nuclear reactor in which the fission chain reaction is sustained by fast neutrons. The Lead-cooled Fast Reactors (LFRs) feature a fast neutron spectrum, high temperature operation, and cooling by either molten lead or lead-bismuth eutectic  When an atom in a nuclear reactor fissions, neutrons are released at high energy (fast speeds). Most of the neutrons in these reactors slow down to low speeds  Jul 17, 2006 Neutrons produced by fission have high energies and move extremely quickly. These so-called fast neutrons do not cause fission as efficiently as  Fast Neutron Reactors (FNRs).