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Projects

Y-12 National Security Complex

Exterior view of Y-12 National Security complex. Exterior view of Y-12 National Security complex.
View of project engineer in lab with pieces of specialized equipment.
Worker wearing heat protective suit examining molten materials in lab.
Two scientists examining a piece of specialized equipment in lab.

Delivering a Safer and More Secure World

Since 2014, Bechtel-led Consolidated Nuclear Security, LLC (CNS) has managed and operated the Y-12 National Security Complex in Oak Ridge, Tennessee. The complex supports the Department of Energy’s (DOE) National Nuclear Security Administration (NNSA) in its mission to maintain the safety, security, and effectiveness of the U.S. nuclear deterrent.


A key production site in the U.S. Nuclear Security Enterprise, Y-12 performs manufacturing, refurbishment, surveillance, dismantlement, and storage of special nuclear material and classified components. Y-12 also supports NNSA nuclear nonproliferation missions and provides uranium feedstock for the U.S. Navy’s nuclear- powered aircraft carriers and submarines.

Bechtel is also responsible for the design, construction, and commissioning of a modern Uranium Processing Facility to support key missions at Y-12 and ensure the long-term viability, safety, and security of enriched uranium capabilities in the U.S.

More on Uranium Processing Facility
Aerial view of Y-12 National Security Complex.

Bechtel’s Role

Since 2000, Bechtel has been a trusted partner in the government’s efforts to manage and operate Y-12. Through experience and expertise, Bechtel improves performance and is committed to creating future investments at the site to ensure a sustainable future.

Unique Missions

Y-12 is one of the principal manufacturing facilities in the Nuclear Security Enterprise. At Y-12, weapons components in the U.S. stockpile are manufactured and refurbished. Y-12 is also the nation’s uranium center of excellence. Y-12’s missions include safely and securely storing uranium; processing and manufacturing special materials vital to national security; suppling highly enriched uranium for U.S. Navy nuclear- powered aircraft carriers and submarines; conducting tests and training; as well as decommissioning weapons to help prevent the spread of weapons of mass destruction.

Exterior view of demolition on old building at Y-12 complex.

Modernizing Key Facilities

The CNS team is modernizing critical facilities at Y-12. Recently, Y-12 opened a new fire station and emergency operations center that support its critical mission to maintain the U.S. nuclear deterrent. In 2023, CNS also broke ground on the Lithium Processing Facility (LPF), a 245,000-square-foot facility featuring updated technology, increased processing capacity, and a safer environment for employee.

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