David Albright and Serena Kelleher-Vergantini
December 6, 2014
Digital Globe commercial satellite imagery dated December 1, 2014 continues to show signatures consistent with the shutdown of North Korea’s Yongbyon 5 megawatt-electric (MWe) reactor for maintenance or renovations and possibly some level of fuel replacements. However, caution is warranted: North Korea may also be desperate for plutonium for nuclear weapons and willing to unload the reactor earlier than expected, while also conducting maintenance work on the reactor.
Some signatures are visible at the reprocessing plant located southeast of the Yongbyon reactors, suggesting some level of operation. However, North Korea may also be trying to signal plutonium separation activities without actually conducting any. At the enrichment site, located in the southern part of the Yongbyon nuclear site, roof renovations on a building adjacent to the uranium centrifuge building have halted.
Analysis of imagery dated June 30, August 27, and September 29, 2014, combined with procurement data obtained by ISIS, suggests that North Korea has emphasized the production of weapon-grade plutonium in the 5 MWe reactor as well as enriched uranium for its nuclear weapons program. Analysis of more recent imagery dated December 1, 2014 suggests that North Korea continues to work on maintaining the aged 5 MWe reactor and intends to restart it. The start-up date of the experimental light water reactor (LWR) continues to remain uncertain.
View the full report here: Yongbyon: Monitoring Activities during Shutdown of 5 MW Reactor
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