截至2014年底，世界各国共拥有高浓缩铀储备1370±125吨，分离钚储备505±10吨。Fissile material stocks
Numbers for weapon plutonium for the United States and United Kingdom are based on official data. Most numbers for civilian plutonium are based on declarations submitted to IAEA and reflect the status as of December 31, 2014. Other numbers are non-governmental estimates, often with large uncertainties. HEU amount for Russia is 90% enriched HEU equivalent. The totals are rounded. See individual country entries for details.
Production of military fissile materials continues in India, which is producing plutonium and HEU for naval propulsion, Pakistan, which produces plutonium and HEU for weapons, Israel, which is believed to produce plutonium. North Korea has the capability to produce weapon-grade plutonium and highly-enriched uranium.
France, Russia, the United Kingdom, Japan, and India operate civilian reprocessing facilities that separate plutonium from spent fuel of power reactors. China is operating a pilot civilian reprocessing facility.
Twelve countries - Russia, the United States, France, the United Kingdom, Germany, the Netherlands (all three are in the URENCO consortium), Japan, Argentina, Brazil, India, Pakistan, and Iran - operate uranium enrichment facilities. North Korea is also believed to have an operational uranium enrichment plant.
As of 1 April 2016, 26 countries had at least 1 kg of
highly-enriched uranium in their civilian stocks. All HEU has been
removed from 30 countries plus Taiwan.
More than 10000 kg: (2 countries)
1000-10000 kg: (6 countries)
- United Kingdom
100-1000 kg: (7 countries)
- South Africa
10-100 kg: (3 countries)
- North Korea
1-10 kg: (4 countries)
About 1 kg: (4 countries)
Cleared: (30 countries plus Taiwan)
- Czech Republic
- South Korea
Countries with research reactors that never used HEU: (11 countries)
- Congo (DRC)