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Electrical Resistance Heating of Soils at C-Reactor at the Savannah River Site.

DE2007915113

Publication Date	2007
Personal Author	Morgenstern, M. R.; Amari, J. A.; MacMurray, A. M.; Farrar, M. E.; Killeen, T. P.; Blundy, R. F.
Page Count	18
Abstract	Chlorinated solvent contamination of soils and groundwater is an endemic problem at the Savannah River Site (SRS), and originated as by-products from the nuclear materials manufacturing process. Five nuclear reactors at the SRS produced special nuclear materials for the nations defense program throughout the cold war era. An important step in the process was thorough degreasing of the fuel and target assemblies prior to irradiation. Discharges from this degreasing process resulted in significant groundwater contamination that would continue well into the future unless a soil remediation action was performed. The largest reactor contamination plume originated from C-Reactor and an interim action was selected in 2004 to remove the residual trichloroethylene (TCE) source material by electrical resistance heating (ERH) technology. This would be followed by monitoring to determine the rate of decrease in concentration in the contaminant plume. Because of the existence of numerous chlorinated solvent sources around SRS, it was elected to generate in-house expertise in the design and operation of ERH, together with the construction of a portable ERH/SVE system that could be deployed at multiple locations around the site. This paper describes the waste unit characteristics, the ERH system design and operation, together with extensive data accumulated from the first deployment adjacent to the C-Reactor building. The installation heated the vadose zone down to 62 feet bgs over a 60 day period during the summer of 2006 and raised soil temperatures to over 200 oF. A total of 730 lbs of trichloroethylene (TCE) were removed over this period, and subsequent sampling indicated a removal efficiency of 99.4%.
Keywords	Nuclear reactors Soil contamination Electrical Resistance Heating Trichloroethylene Groundwater contamination Soil remediation actions Vadose zone Heat treatments Savannah River Site Chlorinated solventd Waste unit characteristics Degreasing discharges
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Bechtel Savannah River, Inc., Aiken, SC.; Department of Energy, Washington, DC.; Westinghouse Savannah River Co., Aiken, SC.; Savannah River National Lab., Aiken, SC.
Supplemental Notes	Prepared in cooperation with Westinghouse Savannah River Co., Aiken, SC. and Savannah River National Lab., Aiken, SC. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200802
Contract Number	DE-AC09-96SR18500

Electrical Resistance Heating of Soils at C-Reactor at the Savannah River Site.

Electrical Resistance Heating of Soils at C-Reactor at the Savannah River Site.
DE2007915113

Publication Date	2007
Personal Author	Morgenstern, M. R.; Amari, J. A.; MacMurray, A. M.; Farrar, M. E.; Killeen, T. P.; Blundy, R. F.
Page Count	18
Abstract	Chlorinated solvent contamination of soils and groundwater is an endemic problem at the Savannah River Site (SRS), and originated as by-products from the nuclear materials manufacturing process. Five nuclear reactors at the SRS produced special nuclear materials for the nations defense program throughout the cold war era. An important step in the process was thorough degreasing of the fuel and target assemblies prior to irradiation. Discharges from this degreasing process resulted in significant groundwater contamination that would continue well into the future unless a soil remediation action was performed. The largest reactor contamination plume originated from C-Reactor and an interim action was selected in 2004 to remove the residual trichloroethylene (TCE) source material by electrical resistance heating (ERH) technology. This would be followed by monitoring to determine the rate of decrease in concentration in the contaminant plume. Because of the existence of numerous chlorinated solvent sources around SRS, it was elected to generate in-house expertise in the design and operation of ERH, together with the construction of a portable ERH/SVE system that could be deployed at multiple locations around the site. This paper describes the waste unit characteristics, the ERH system design and operation, together with extensive data accumulated from the first deployment adjacent to the C-Reactor building. The installation heated the vadose zone down to 62 feet bgs over a 60 day period during the summer of 2006 and raised soil temperatures to over 200 oF. A total of 730 lbs of trichloroethylene (TCE) were removed over this period, and subsequent sampling indicated a removal efficiency of 99.4%.
Keywords	Nuclear reactors Soil contamination Electrical Resistance Heating Trichloroethylene Groundwater contamination Soil remediation actions Vadose zone Heat treatments Savannah River Site Chlorinated solventd Waste unit characteristics Degreasing discharges
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Bechtel Savannah River, Inc., Aiken, SC.; Department of Energy, Washington, DC.; Westinghouse Savannah River Co., Aiken, SC.; Savannah River National Lab., Aiken, SC.
Supplemental Notes	Prepared in cooperation with Westinghouse Savannah River Co., Aiken, SC. and Savannah River National Lab., Aiken, SC. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200802
Contract Number	DE-AC09-96SR18500