Summary of Hanford Subsurface Air Flow and Extraction (SAFE) Activities for Fiscal Year 2001
Potential leak detection, monitoring, and mitigation techniques are being developed to support Hanford single-shell tank waste retrieval operations. In July and August 2001, Pacific Northwest National Laboratory demonstrated several of these technologies for CH2M HILL Hanford Group, Inc., at the Mock Tank Site in the 200 East Area. These subsurface air flow and extraction (SAFE) technologies use air injection and extraction wells to create an advective air flowfield beneath a tank. SAFE includes the following technologies: 1) leak detection--in-tank tracers, flowfield disturbance, radon displacement, and tank waste vapors; 2) leak monitoring--partitioning tracer method and reactive tracers; 3) leak mitigation--soil desiccation before and after leakage and in situ gaseous reduction; and 4) subsurface characterization--interfacial tracers. This report provides an overview of these technologies and discusses the FY 2001 demonstration activities at the Mock Tank Site, their results, and implications for future work.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 15001309
- Report Number(s):
- PNNL-13820; 820201000; TRN: US0400293
- Country of Publication:
- United States
- Language:
- English
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