What is the difference between plutonium and weapons-grade plutonium?

Plutonium recovered from LWR spent fuel, while not weapons grade, can be used to produce nuclear weapons at all levels of sophistication, though in simple designs it may produce only a fizzle yield. Weapons made with reactor-grade plutonium would require special cooling to keep them in storage and ready for use.

What does weapons-grade plutonium mean?

The resulting “weapons-grade” plutonium is typically about 93 percent plutonium-239. Such brief irradiation is quite inefficient for power production, so in power reactors the fuel is left in the reactor much longer, resulting in a mix that includes more of the higher isotopes of plutonium.

Are there different grades of plutonium?

Definitions of plutonium usually refer to the level of the unwanted plutonium-240 isotope: * Weapon grade plutonium contains less than 7% plutonium-240. (A sub-category – super grade plutonium – contains 2-3% plutonium-240 or less.) * Reactor grade plutonium contains over 18% plutonium-240.

Can reactor grade plutonium nuclear weapons?

Even for plutonium from high-burnup PWR fuel, though most weapons would predetonate, the average yield would still be about 2 kilotons. These results show that a country can produce powerful nuclear weapons using reactor-grade plutonium with near-critical cores.

Does Chernobyl have weapons-grade plutonium?

In interviews, U.S. and West European officials said that some of the graphite reactors like the four at Chernobyl may be used to produce weapons-grade plutonium, but that their most likely military purpose is to make tritium, a rare isotope of hydrogen used in thermonuclear weapons.

Can you use plutonium in a reactor?

Like uranium, plutonium can also be used to fuel nuclear power plants, as is done in a few countries. Currently, the U.S. does not use plutonium fuel in its power reactors. Nuclear reactors that produce commercial power in the United States today create plutonium through the irradiation of uranium fuel.

Do any reactors use plutonium?

Are there plutonium reactors?

Plutonium and nuclear power. Plutonium is formed in nuclear power reactors from uranium-238 by neutron capture. When operating, a typical 1000 MWe nuclear power reactor contains within its uranium fuel load several hundred kilograms of plutonium.

How much does 1 kg of plutonium cost?

Since the energy per fission from plutonium-239 and uranium-235 is about the same, the theoretical fuel value of fissile plutonium can be put at $5,600 per kilogram. Reactor-grade plutonium also contains non-fissile isotopes, reducing its value to about $4,400 per kilogram.

Can u buy plutonium?

The United States will buy Russian-produced plutonium-238 for use as a power source in American spacecraft, the Department of Energy has announced. The contract provides for the United States to buy up to 40 kilograms, or about 88 pounds, over five years.

Can reactor grade plutonium be used in nuclear weapons?

Reactor grade plutonium can be used in nuclear weapons, albeit the case that weapons manufacture using reactor grade plutonium is more difficult and dangerous compared to weapon grade plutonium.

What is the difference between reactor-grade and fuel-grade plutonium-239?

In the United States, plutonium containing between 80 and 93 percent plutonium-239 is referred to as “fuel-grade” plutonium, while plutonium with less than 80 percent plutonium-239 — typical of plutonium in the spent fuel of light-water and CANDU reactors at normal irradiation — is referred to as “reactor-grade” plutonium.

What is the difference between reactor-grade and weapon-grade nuclear weapons?

The only difference would be that while the weapon-grade plutonium weapon would produce a yield of 20 kilotons, the reactor-grade plutonium weapon would produce a yield of only 5 kilotons, though its destructive area would still be about 40% that of the 20 kiloton weapon.

How much plutonium is produced in a nuclear power reactor?

A standard nuclear power reactor (1000 MWe LWR) produces about 290 kilograms of plutonium each year. Hundreds of tonnes of plutonium have been produced in power reactors (and to a lesser extent research reactors), hence the importance of the debate over the use of reactor grade plutonium in weapons.