Reactor-grade plutonium (RGPu) is the isotopic grade of plutonium that is found in spent nuclear fuel after the uranium-235 primary fuel that a nuclear...

weapons-grade plutonium. Such operation is not possible with the light water reactors most commonly used to produce electric power. In these the reactor must...

a plutonium sample's usability for weapons or its quality as reactor fuel, and the percentage of plutonium-240 determines its grade (weapons-grade, fuel-grade...

for that purpose. Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235...

Oblast, Russia. The reactor is designed to generate 880 MW of electrical power. The plant was considered part of the weapons-grade Plutonium Management and...

barrier for weapons construction; see the article Reactor-grade plutonium. Burnup Isotopes of plutonium Audi, Georges; Bersillon, Olivier; Blachot, Jean;...

sometimes used generically to refer to any similar reactor. As with other plutonium-producing reactors, conserving neutrons is a key element of the design...

reprocessing, which can be redirected to produce weapons-grade plutonium. As of 2025[update], every fast reactor has used a liquid metal coolant, typically sodium-cooled...

Plutonium consisting of more than about 90% 239Pu is called weapons-grade plutonium; plutonium from spent nuclear fuel from commercial power reactors...

were required to render 34 tons of weapons grade plutonium, into reactor grade plutonium alongside reaching the spent fuel standard, that is mixed with...

create weapons-grade plutonium. Because the reactor-grade plutonium contains so much 241Pu, the presence of 241Am makes the plutonium less suitable for...

series to lead-206. Historically, most plutonium-238 has been produced by Savannah River in their weapons reactor, by irradiating neptunium-237 (half life...

mixed with between 4% and 7% reactor grade plutonium oxide. Only a few Generation II and about half of Generation III reactor designs are MOX fuel compliant...

uranium-oxide (MOX) fuel for Hanford's Fast Flux Test Facility and reactor-grade plutonium. Plutonium was valuable, and reducing waste saved landfill dispatches...

PUREX (plutonium uranium reduction extraction) is a chemical method used to purify fuel for nuclear reactors or nuclear weapons. It is based on liquid–liquid...

uranium-233 that is bred in the reactor. Plutonium-239 is produced at much lower levels and can be consumed in thorium reactors. The feasibility of using thorium...

coolant loop between the reactor and the turbines. IFRs and light-water reactors (LWRs) both produce reactor grade plutonium – which even at high burnups...

which can "burn" transuranic elements such as 240 Pu, 241 Pu (reactor grade plutonium) from LWRs. An MSR can react to load changes in under 60 seconds...

water reactor Magnox reactors were designed to be dual use producing both power and weapons grade plutonium later designs instead bred reactor-grade plutonium...

weapons. If the reactor has been used normally, the plutonium is reactor-grade, not weapons-grade: it contains more than 19% 240Pu and less than 80% 239Pu...

weapons grade plutonium, as the reactor design can handle a full inventory of MOX plutonium. After the Cold War ended, 100 tons of surplus weapons grade plutonium...

with neutrons. Examples of such materials include uranium and plutonium. Most nuclear reactors use a moderator to lower the kinetic energy of the neutrons...

5 kg of plutonium a year. CIRUS was shut down in September 1997 for refurbishment and was scheduled to resume operation in 2003. The reactor was brought...

tons) of spent fuel into 11 tonnes (11 long tons; 12 short tons) reactor grade plutonium (for immediate further processing into MOX fuel) and 1,045 tonnes...

Nuclear Weapon Archive. 4.1.7.1.2.1 Plutonium Oxide. Retrieved 20 October 2017. The critical mass of reactor grade plutonium is about 13.9 kg (unreflected)...

the Hanford Engineer Works and B Reactor, the first full-scale plutonium production reactor in the world. Plutonium manufactured at the site was used...

sophistication using reactor-grade plutonium. Moreover, reactors that are capable of refueling frequently can be used to produce weapon-grade plutonium, which can...

Lead-cooled fast reactor based on Soviet naval propulsion units. FBRs usually use a mixed oxide fuel core of up to 20% plutonium dioxide (PuO2) and...

Windscale reactors (the "Windscale Piles") and the associated First Generation Reprocessing Plant, producing the first British weapons grade plutonium-239,...

used nuclear fuel. Weapons-grade and reactor-grade plutonium can be used in plutonium–thorium fuels, with weapons-grade plutonium being the one that shows...