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Device Assembly Facility (DAF)

DAF Facility Photograph Construction began on the Device Assembly Facility (DAF) in the mid-1980s during underground nuclear weapons testing. DAF's original purpose was to consolidate all nuclear explosive assembly functions, to provide safe structures for high explosive and nuclear explosive assembly operations, and to provide a state-of-the-art safeguards and security environment. Now that the United States is no longer conducting underground nuclear weapons tests, the DAF has other uses that include the building of subcritical experiment assemblies. It is one of the few facilities in the country that can accommodate these activities.

The DAF is a collection of 30 individual steel-reinforced buildings connected by a rectangular racetrack corridor. The entire complex, covered by compacted earth, spans an area of 100,000 square feet.

The DAF is a national asset. The design of the facility and its safety features makes the DAF well-suited to address new national challenges - such as the addition of Criticality Experiments Facility to the Nevada National Security Site - in support of maintaining the nation's nuclear stockpile.

Refer to the following Fact Sheet for more information:

PDF icon  Device Assembly Facility [PDF, 249 KB]

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Date Last Modified: February 20, 2014