Closure of the 242-F system

This paper describes the closure preparation and proposed closure process of the 242-F Evaporator System at the Savannah River Site. The closure of this system will be a first-of-a-kind for the DOE and is applicable across the Department of Energy (DOE complex and the nuclear industry. The 242-F Evaporator System is part of a nuclear waste storage and management process comprised of tanks and supporting facilities permitted by the South Carolina Pollution Control Act as wastewater treatment facilities. The system has been emptied of residuals to the maximum extent practical given funding levels and has been isolated from all process interfaces. The remaining activities are contingent upon satisfying emergent regulatory requirements. Closure of the 242-F Evaporator System is part of the DOE's stewardship of federally owned and operated facilities. Protecting workers and the general public during and after closure is part of that stewardship that requires careful and methodical planning and execution of closure processes. (authors)