Decision document for transuranic tank waste disposal

During the Tank Waste Remediation System systems requirements review, an issue was raised regarding the disposal of potentially transuranic tank waste. This report documents the decision analysis process to resolve this issue. A decision was made to blend the Hanford Site transuranic tank waste with high-level waste for disposal in an offsite repository. In the interim, the transuranic tank waste will remain stored consistent with the existing safety authorization basis and waste compatibility requirements. The transuranic tank waste will not be sent to the Waste Isolation Pilot Plant for disposal. The decision is justified based on several decision criteria including cost,volume of waste produced, operability, safety, and technical maturity. There is no cost incentive to segregate transuranic tank waste for disposal at Waste Isolation Pilot Plant. The additional operating and capital costs required to immobilize segregated transuranic tank waste outweigh the savings gained in disposal cost