Tank Storage, Operations & Closure (TSOC) Project
The primary focus of the project is the safe retrieval and storage of wastes in Hanford's 28 double-shell tanks (DSTs) and 149 single-shell tanks (SSTs). Specifically, for DSTs, the project will include operations, upgrades, permitting, safety, characterization, systems inspections, and waste volume projections. The project for SSTs will cover operations, interim stabilization, leak detection, characterization, system inspections, safety, and groundwater issues.
Jeff Lyon (509-372-7914) is the Tank Storage, Operations and Closure (TSOC) Project manager.
Project Goals & Mission
The goals of the TSOC Project are the safe storage, management, and retrieval of all tank wastes to complement the treatment and disposal of tank wastes. Project staff support a systematic approach to the closure of the tank system and the safe treatment of any remaining materials.
The TSOC Project mission is to:
The TSOC Project oversees management of highly radioactive waste in 177 underground storage tanks at the Hanford Site. The tanks range from 50,000 to more than one million gallons in capacity. The 149 SSTs are well beyond their planned life expectancy of 20 years.
Out of these 149 SSTs, 67 have been declared as known or assumed leakers that have released more than one million gallons of waste to the soil and groundwater. The released tank waste is now moving toward, but has not reached, the Columbia River. Other, less toxic contaminants from cribs, ditches, and ponds reach the river today, but the amounts are very small and are immediately diluted once the groundwater enters the river.
To provide safer storage for tank wastes, the 28 DSTs were built. In 1999, we negotiated an agreement with the U.S. Department of Energy to move all the pumpable liquid out of the SSTs into DSTs. More than three million gallons of liquid waste has been moved from the SSTs into the DSTs. To date, there have been no leaks to the environment from the DSTs.
Terms to Know
Waste Management Area C (WMAC) Resources
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