Monday, May 17, 2010

Nuclear History of North Korea

History

North Korea maintains uranium mines with an estimated four million tons of exploitable high-quality uranium ore. Information on the state and quality of their mines is lacking, but it is estimated that the ore contains approximately 0.8% extractable uranium. In the mid-1960s, it established a large-scale atomic energy research complex in Yongbyon and trained specialists from students who had studied in the Soviet Union. Under the cooperation agreement concluded between the USSR and the DPRK, a nuclear research center was constructed near the small town of Yongbyon. In 1965 a Soviet IRT-2M research reactor was assembled for this center. From 1965 through 1973 fuel (fuel elements) enriched to 10 percent was supplied to the DPRK for this reactor.

In the 1970s it focused study on the nuclear fuel cycle including refining, conversion and fabrication. In 1974 Korean specialists independently modernized Soviet IRT-2M research reactor in the same way that other reactors operating in the USSR and other countries had been modernized, bringing its capacity up to 8 megawatts and switching to fuel enriched to 80 percent. Subsequently, the degree of fuel enrichment was reduced. In the same period the DPRK began to build a 5 MWe research reactor, what is called the “second reactor.” In the 1977 the DPRK concluded an agreement with the International Atomic Energy Agency (IAEA), allowing the latter to inspect a research reactor which was built with the assistance of the USSR. The North Korean nuclear weapons program dates back to the 1980s. In the 1980s, focusing on practical uses of nuclear energy and the completion of a nuclear weapon development system, North Korea began to operate facilities for uranium fabrication and conversion. It began construction of a 200 MWe nuclear reactor and nuclear reprocessing facilities in Taechon and Youngbyon, respectively, and conducted high-explosive detonation tests. In 1985 US officials announced for the first time that they had intelligence data proving that a secret nuclear reactor was being built 90 km north of Pyongyang near the small town of Yongbyon. The installation at Yongbyon had been known for eight years from official IAEA reports. In 1985, under intenational pressure, Pyongyang acceded to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). However the DPRK refused to sign a safeguards agreement with the International Weapons (NPT). However, the DPRK refused to sign a safeguards agreement with the International Atomic Energy Agency (IAEA), an obligation it had as a party to the Nuclear Non-Proliferation Treaty.

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