Russia appears to expand the HEU production line in Zelenogorsk

The Electrochemical Plant in Zelenogorsk added a new cascade of 9th-generation centrifuges to the line that supports "production of fuel for research reactors and fast-neutron reactors."

Although the statement does not say it directly, the production line appears to be the one that is producing highly-enriched uranium. It was launched in 2012 specifically to produce fuel for these types of reactors.