1990
Saltstone Facility startup

1992
K Reactor restarted since contract change, goes critical for a test run before getting shut down permanently

1994
Replacement Tritium Facility startup

1995
Westinghouse Savannah River Company launches www.srs.gov, the Savannah River Site's first website

1996
Defense Waste Processing Facility startup

1996
L Area Complex Basin equipment reconfigured to safely handle and store spent nuclear fuel from off-site research reactors

1997
First high-level tanks (17 and 20) are closed.

1997
Cold War Historic Preservation Program begins.

1999
Washington Group International acquires the government services business of Westinghouse, changing the Westinghouse Savannah River Company name to Washington Savannah River Company.

1999
The Department of Energy signs a contract with a consortium, now called Shaw AREVA MOX Services, LLC, to design, build and operate a Mixed Oxide Fuel Fabrication Facility.