Pyongsan Uranium Concentrate Plant (Nam-chon Chemical Complex)

Nuclear Weapons
, by and The Pyongsan Uranium Concentrate Plant (38.318369 N, 126.432360 E) is located in Pyongsan-gun (평산군, Pyongsan County), Hwangbuk-do (황북, North Hwanghae Province), approximately 45 kilometers from the DMZ and 96 kilometers northwest of Seoul—the capital of South Korea. Since approximately 1990 it has occupied an critical role in the Democratic People’s Republic of Korea’s (North Korea) nuclear research and weapons programs as the sole known provider of uranium oxide (yellowcake) to these programs for fuel fabrication or enrichment.

Yongbyon Declassified Part VII: Final Stretch of First-Phase Construction Begins

Nuclear Weapons
CIA, declassified KH-4B image, April 20, 1972.
, by Declassified April 1972 satellite imagery the Yongbyon Nuclear Research Center show developments which taken as a whole continue to represent both an ongoing first-phase construction project for the facility and early infrastructure development efforts within a longer-term plan for future expansion. This work laid the foundations for the construction of the facility’s first waste storage facility in the years to follow and the massive second phase expansion that would begin during the early-1980s.

Yongbyon Update: February Movement of Radioactive Material? Pt. II

Military, Nuclear Weapons
, by and Satellite imagery acquired on February 14, 2020 shows that the three specialized railcars identified in Beyond Parallel’s report from February 11, 2020 have been moved from west of the Radiochemistry Laboratory to the southern rail yard adjacent to the reported isotope/tritium production facility. A fourth railcar is present in the latest imagery in addition to the three railcars that were captured in imagery from February 10, 2020. These railcars have been associated with the movement of radioactive material in the past. If past practice is any indication, all four cars will leave the Yongbyon facility sometime during the next seven days.

Yongbyon Update: February Movement of Radioactive Material?

Nuclear Weapons
, by and Satellite imagery acquired on February 10, 2020 shows the presence of three specialized railcars that have been associated with the movement of radioactive material in the past. The last observed presence of these railcars by Beyond Parallel was in November 2019. The size and number of the casks observed on the railcars suggest the outbound shipment of irradiated liquid or solid waste, disassembled but contaminated equipment or, potentially, the movement of fissile materials. A less likely alternative is the inbound shipment of radioactive material.

Database: North Korean Provocations

Military, Nuclear Weapons
The CSIS Beyond Parallel team compiled an original database of all North Korean provocations since the Korean War in 1953, beginning with the first provocation documented in 1958. There has been more than 280 instances of provocations, including from missile and nuclear tests, airplane hijackings, bombings, exchange of fire, to infiltration and territorial incursions into South Korea.

December 2019 Update: Chamjin-ni Vertical Engine Test Stand

Military, Nuclear Weapons
, by and The Chamjin-ni vertical engine test stand appears to be minimally maintained but apparently capable and available for engine testing at any time. It is North Korea’s oldest known test stand, developed in the 1980s. There is no evidence of recent tests. This is indicated by the absence of scarring in the exhaust deflector and color-infrared imagery showing healthy vegetation at the end of the exhaust deflector.

December 2019 Sinpo Update No. 2: Waiting for Godot

Military, Nuclear Weapons
, by and As with Beyond Parallel’s December 4 report, satellite imagery of the Sinpo South Shipyard collected on December 14, 2019 does not provide any indication of the launch of the much anticipated “newly built submarine” or preparations for the shipyard’s test stand. The only observation of significance at the shipyard is the presence of a 16-METER class midget submarine (SSW) moored alongside the barely visible submersible missile test stand barge in the shipyard’s secure boat basin.

December 2019 Update: Tonghae Satellite Launching Ground

Military, Nuclear Weapons
, by and While speculation (sometimes wild) continues to grow concerning a North Korean end-of-year “surprise,” Beyond Parallel is continuing its recent series of surveys of the North’s weapons of mass destruction (WMD) facilities to determine if there are any new developments. It is our desire to provide objective and factual information to enable decision-makers, policymakers and the general public to better understand the important aspects of the threat posed by North Korea and provide assistance to all in arriving at calm and informed decisions. Our recent surveys include the Sinpo South Shipyard, Sohae Satellite Launching Station, Nampo Submersible Test Stand Barge and Magunpo Solid Rocket Motor Test Stand.

December 2019 Update: The Magunpo Solid Rocket Motor Test Facility

Military, Nuclear Weapons
, by and The Magunpo Solid Rocket Motor Test Facility is located a few kilometers west of the Hamhung-Hungnam area and along the east coast of North Korea. December 6 imagery shows minor activity at the facility, including the presence of a small truck and some crates. Although no recent test appears to have taken place (i.e., absence of scarring in the exhaust deflector and healthy surrounding vegetation), the facility appears to be well-maintained and ready for solid rocket motor testing at any time. A successful test of solid fuel propellant engine, particularly at the east test stand, would denote another major advancement in survivable nuclear weapons capability, and would presumably also be designed to put additional pressure on the U.S. to make concessions in negotiations.