In its annual account of civilian plutonium stock - INFCIRC/549/Add.9/16 - Russia reported a moderate increase in the amount of separated plutonium. According to the declaration, as of the end of 2013 Russia owned 51.9 tonnes of unirradiated separated plutonium, of which 1.2 tonnes more than was declared in 2012.

Of this amount, 50,300 kg is stored at the reprocessing plant, an increase of 1,100 kg over the 2012 amount (49,200 kg). Other reported amounts of separated plutonium are: 400 kg is in unirradiated MOX fuel held at reactor sites and elsewhere (300 kg in 2012), and 1,200 kg (1,200 kg in 2012) is "held elsewhere." Of the total amount of 51.9 tonnes, 0.3 kg of plutonium belongs to "foreign bodies". Also, Russia owns 0.6 kg of plutonium that is "held in locations in other countries". This amount is not included in the total.

In addition, Russia has 79,000 kg (77,500 kg in 2012) of plutonium in spent fuel that is stored at reactor sites, 4,500 kg (4,500 kg) - in spent fuel that is awaiting reprocessing at the reprocessing plant, and 53,500 kg (56,500 kg) - in spent fuel "held elsewhere". Overall, Russia had 140.0 (135.5) tonnes of plutonium still in spent fuel as of December 31, 2013, up 4.5 tonnes from December 2012.