16 December 2017

North Korean Nuclear Reactor Safety: The Threat No One is Talking About


The ability of North Korea to safely operate its nuclear reactors, according to many experts, is increasingly being called into question given the North’s isolation and lack of safety culture. Pyongyang’s ability to respond to a nuclear accident in a timely fashion will make the difference between a small-scale event and a catastrophic disaster. And while the actual contamination would be localized, the lack of transparency from North Korea in dealing with the situation is likely to cause political panic in the region in excess of the actual radiological exposure and environmental impact. The opening of nuclear safety talks with the North to help prevent such an accident from occurring would provide a rare opportunity for regional dialogue and could pry open the door for realistic and productive discussions of North Korea’s nuclear program. 

A Disaster Waiting to Happen?

A video of Kim Jong Un smoking next to an untested liquid-fueled missile tells you everything you need to know about North Korea’s nuclear safety culture. The remarkable 14-second clip shows the Supreme Leader taking a puff while a Hwasong-14 intercontinental ballistic missile is erected on the launch pad mere feet away-prompting a torrent of snarky Twitter commentary expressing regret that Kim’s lit cigarette had not “solved the problem for us.” Kim’s recklessness is certainly notable, and it hints at an underemphasized and potentially devastating possibility: the threat of a nuclear accident in North Korea.

At the March 2014 Nuclear Security Summit in The Hague, then-South Korean President Park Geun-hye claimed that Yongbyon, North Korea’s primary nuclear research center, “is home to such a dense concentration of nuclear facilities that a fire in a single building could lead to a disaster potentially worse than Chernobyl.” While her damage assessment is likely an exaggeration–researchers from 38 Northassess Chernobyl’s power output to have been 3,000 percent greater than Yongbyon–the potential for a nuclear accident is not.

Niko Milonopoulos and Edward D. Blandford noted previously that a sudden fault in North Korea’s outdated power grid could prevent the Yongbyon reactors from being adequately cooled and could potentially trigger a meltdown. Such an event could also be prompted by a natural disaster or abnormal weather patterns. Complementary analysis by Nick Hansen indicates that North Korea’s 5 MWe plutonium production reactor had to be briefly shut down following a flood in July 2013 which destroyed parts of the cooling systems. He noted with concern that “if a major flood cuts off the cooling water supply to the reactors before they can be shut down, a major safety problem could occur.” This is exactly what prompted the series of nuclear meltdowns at Fukushima.

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