On April 27, 2015 the government of Kazakhstan approved an agreement with IAEA that would create a reserve of low-enriched uranium in the country. According to the agreement, the reserve will consist of no more than 60 cylinders of the 30B type containing UF6 with uranium enriched to no more than 4.95%.

As a 30B cylinder can contain 2,247 kg of UF6, which is equivalent to 1,550 kg of uranium, the LEU bank could contain about 93 tonnes of LEU.

The plan to create a reserve of LEU was approved by the IAEA Board of Directors in 2010. In 2012 Kazakhstan offered the Ulba Metallurgical Plant as the site for the bank. The draft agreement, however, does not specify whether the bank will be located in Ulba.