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National Nuclear Security Administration

The National Nuclear Security Administration works to ensure that the nation's stockpile of nuclear weapons is safe and secure. It also works to ensure the safety of naval nuclear reactors, is the first responder in case of nuclear emergency, and works on worldwide nuclear nonproliferation issues.

Agency Details


National Nuclear Security Administration


Contact the National Nuclear Security Administration

Main Address:

1000 Independence Ave., SW
Washington, DC 20585

Phone Number:

1-202-586-5000 (Energy Switchboard)

Toll Free:



Nuclear Materials Management and Safeguards System Forms

Government branch:

Executive Department Sub-Office/Agency/Bureau

Parent Agency

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