NNSA Advanced Technology Systems
NNSA may refer to * National Nuclear Safety Administration, People's Republic of China * National Nuclear Security Administration The National Nuclear Security Administration (NNSA) is a United States federal agency responsible for safeguarding national security through the military application of Nuclear physics, nuclear science. NNSA maintains and enhances the Stockpil ...

National Nuclear Safety Administration
National Nuclear Safety Administration () or NNSA is a central government agency responsible for regulating nuclear safety, supervision on all civilian nuclear infrastructure in China. It also inspects nuclear safety activities and regulate the approval mechanism. History The National Nuclear Safety Administration (1984–1989) was established in October 1984. It was a subordinate agency of the State Science and Technology Commission which had independent regulatory of nuclear safety in mainland China. In 1990, the State Science and Technology Commission became the National Science and Technology Commission but National Nuclear Safety Administration was still under its administration until 1998. In 1998 the National Nuclear Safety Administration was transferred to the State Environmental Protection Administration. In 2008, the State Environmental Protection Administration was upgraded to a full ministry of the Chinese state called the Ministry of Environmental Protection an ...
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