STRONTIUM & TRANSURANIC (TRU) SEPARATION PROCESS IN THE DOUBLE SHELL TANK (DST) SYSTEM

Technical Report · Fri Jun 10 04:00:00 EDT 2005

DOI:https://doi.org/10.2172/841017· OSTI ID:841017

JOHNSON, ^[1]; SWANSON,; BOECHLER,

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1. CH2M

The supernatants stored in tanks 241-AN-102 (AN-102) and 241-AN-107 (AN-107) contain soluble strontium-90 ({sup 90}Sr) and transuranic (TRU) elements that require removal prior to vitrification to comply with the Waste Treatment and Immobilization Plant (WTP) immobilized low-activity waste (ILAW) specification and with the 1997 agreement with the Nuclear Regulatory Commission on incidental waste. A precipitation process has been developed and tested with tank waste samples and simulants using strontium nitrate (Sr(NO{sub 3}){sub 2}) and sodium permanganate (NaMnO{sub 4}) to separate {sup 90}Sr and TRU from these wastes. This report evaluates removing Sr/TRU from AN-102 and AN-107 supernates in the DST system before delivery to the WTP. The in-tank precipitation is a direct alternative to the baseline WTP process, using the same chemical separations. Implementing the Sr/TRU separation in the DST system beginning in 2012 provides {approx}6 month schedule advantage to the overall mission, without impacting the mission end date or planned SST retrievals.

• Research Organization: CH2M (US)
• Sponsoring Organization: ENVIRONMENTAL MANAGEMENT (US)
• DOE Contract Number: AC27-99RL14047
• OSTI ID: 841017
• Report Number(s): RPP-24809, Rev.0
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
PERMANGANATES
PRECIPITATION
REMOVAL
SCHEDULES
SODIUM
SPECIFICATIONS
STRONTIUM
STRONTIUM 90
STRONTIUM NITRATES
TANKS
VITRIFICATION
WASTE PROCESSING
WASTES