Recent commercial satellite imagery of North Korea’s Yongbyon Nuclear Scientific Research Center indicates a high level of activity around the compl

Growing Activity at North Korea’s Experimental Light Water Reactor

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2023-04-01 21:30:03

Recent commercial satellite imagery of North Korea’s Yongbyon Nuclear Scientific Research Center indicates a high level of activity around the complex. The 5 MWe Reactor continues to operate, and construction has started on an additional support building around the Experimental Light Water Reactor (ELWR). Furthermore, water discharges have been detected that could be associated with testing of the ELWR’s cooling system. This is not the first time water discharges have been observed coming from the ELWR over the past few years but may indicate the reactor is nearing completion.

Additionally, new construction has started around the Uranium Enrichment Plant (UEP) area, likely intended to expand the uranium conversion capabilities. Together, these developments seem to reflect Kim Jong Un’s recent directive to increase the country’s fissile material production to expand its nuclear weapons arsenal.

Satellite imagery from March 17 revealed the foundation of a new building measuring approximately 42 meters by 15 meters. The foundation appears to have approximately 20 rooms on the base floor. Given its location, this building will likely serve an administrative function, such as accommodating additional staff required to operate the reactor or providing research and engineering spaces.