MEETING - TANK WASTE REMEDIATION SYSTEM (TWRS) PRODUCT SPECIFICATION Contact Point/Contracting Officer, P. E. Rasmussen, 509/376/7437. The Department of Energy (DOE) has established the Tank Waste Remediation System (TWRS) Program to manage and clean up the high-level radioactive waste currently held in 177 tanks and approximately 2000 sealed capsules located on the Hanford Site. The cleanup is being conducted under the Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement). One of the major objectives of the TWRS program is to conceive, develop, design, construct and operate the treatment system for the waste. The remediation system functions include: 1. retrieval of liquid/solid radioactive hazardous waste (240,000 MT of process chemical contaminated with 250 MCi of radioactive elements) from 177 (149 single-shell and 28 double-shell) steel tanks; 2. preprocessing of the waste into two streams--high level (HLW) and low-activity (LAW) waste; 3. immobilization of the LAW as a durable waste form and disposal of the immobilization LAW in a repository on site; and 4. vitrification of the HLW and transport of HLW in casks to an off-site repository. (Note that temporary storage of the vitrified HLW at Hanford may be necessary until a federal repository is available.) It is expected that more than 400,000 MT of immobilized LAW and 20,000 to 40,000 MT of vitrified HLW would be produced through the full remediation of the tanks. The DOE is developing product specifications for the immobilized LAW. The primary basis for the development of these specifications has been a determination of what will likely be required to ensure safe disposal of the immobilized LAW. Only limited consideration has been given to the feasibility of complying with these specifications in a production environment. A meeting for interested parties will be held on Wednesday June 7, 1995, between 9:00 a.m. and 4:00 p.m. at the Best Western Tower Inn in Richland, Washington. The purpose of this meeting will be to discuss the draft product specifications for immobilized LAW that the DOE is developing and to obtain feedback from the private sector regarding the feasibility of complying with these specifications. The Department is requesting that attendance be limited to three individuals per company. Please provide a list of attendees by May 31, 1995, to the U.S. Department of Energy, Richland Operations Office, Attn: Mr. Peter Rasmussen, Contracting Officer, A7-80, Room 709, P.O. Box 550, Richland, Washington 99352.

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