April 4, 2006
The Honorable A. J. Eggenberger
Defense Nuclear Facilities Safety Board
625 Indiana Avenue, NW, Suite 700
Washington, DC 20004-2901
Dear Mr. Chairman:
I am forwarding you the enclosed Department of Energy’s (DOE) plan for returning the Savannah River Site’s (SRS) Tank 48 to active waste service and a technical report on the proposed allowable organic residuals in the tank. These documents complete commitments 3.8 and 3.9 of the DOE’s Implementation Plan for Recommendation 2001-1 for High-Level Waste Management at the Savannah River Site to complete a technical evaluation of acceptable Tank 48 residual levels and to develop a plan and schedule for Tank 48, respectively.
The plan outlines that the intended Tank 48 recovery methodology will be aggregation of the current Tank 48 waste and disposal of the material in the Saltstone Disposal Facility consistent with the Secretarial approved 3116 Determination. In parallel, DOE plans to continue research and development activities for alternative treatment technologies, such as wet-air oxidation and steam reforming, for the treatment and destruction of the organic material in the Tank 48 waste and the associated rinse solutions to a level that the waste can be reintroduced into the general Tank Farm system. DOE is committed to having Tank 48 returned to active service by January 2010.
The technical report on residual organics outlines that the current limit for organics in a nominal waste tank can be significantly increased for Tank 48 provided some limitations are imposed on its utilization. These limitations are consistent with the planned utilization in salt waste processing for Tank 48.
If you have any further questions, please call me at (202) 586-0738 or Mr. Dae Y. Chung, Acting Deputy Assistant Secretary for Integrated Safety Management and Operations Oversight, at (202) 586-5151.
Dr. Inés R. Triay
Chief Operating Officer for
cc: Mark R. Whitaker, Jr., DR-1
Jeffrey Allison, SR