The U.S. Department of Energy's Savannah River Site focuses on supporting and maintaining the nuclear-weapons stockpile as well as processing and storing nuclear materials in support of U.S. nuclear non-proliferation efforts.
The estimated £2.04bn ($4bn) contract to manage and operate the Savannah River site over a five-year period also includes five one-year renewal options bringing the potential total contract value to £4.08bn.
Work performed at the site includes environmental management and the cleanup of legacy materials, facilities, and wastes left over from the Cold War. The Savannah River National Laboratory, a federally-funded research and development centre, is also located at the site.
"The Savannah River Site's long and distinguished history and reputation for safe and effective nuclear operations and environmental management is highly regarded worldwide," said SRNS president Chuck Munns.
"We will honour that heritage and work to create an even more exciting future for our employees, our customers and for the community. It is a future that includes a safe, open and efficient workplace, a renewed and revitalized focus on our people, continuous process improvements and leveraging the vital research from the world-class Savannah River National Laboratory."