Case study to remove radioactive hazardous sludge from long horizontal storage tanks

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The removal of radioactive hazardous sludge from waste tanks is a significant problem at several US Department of Energy (DOE) sites. The use of submerged jets produced by mixing pumps lowered into the supernatant/sludge interface to produce a homogeneous slurry is being studied at several DOE facilities. The homogeneous slurry can be pumped from the tanks to a treatment facility or alternative storage location. Most of the previous and current studies with this method are for flat-bottom tanks with vertical walls. Because of the difference in geometry, the results of these studies are not directly applicable to long horizontal tanks ... continued below

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22 p.

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Hylton, T.D.; Youngblood, E.L. & Cummins, R.L. December 31, 1995.

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Description

The removal of radioactive hazardous sludge from waste tanks is a significant problem at several US Department of Energy (DOE) sites. The use of submerged jets produced by mixing pumps lowered into the supernatant/sludge interface to produce a homogeneous slurry is being studied at several DOE facilities. The homogeneous slurry can be pumped from the tanks to a treatment facility or alternative storage location. Most of the previous and current studies with this method are for flat-bottom tanks with vertical walls. Because of the difference in geometry, the results of these studies are not directly applicable to long horizontal tanks such as those used at the Oak Ridge National Laboratory. Mobilization and mixing studies were conducted with a surrogate sludge (e.g., kaolin clay) using submerged jets in two sizes of horizontal tanks. The nominal capacities of these tanks were 0.87 m{sup 3} (230 gal) and 95 m{sup 3} (25,000 gal). Mobilization efficiencies and mixing times were determined for single and bidirectional jets in both tanks with the discharge nozzles positioned at two locations in the tanks. Approximately 80% of the surrogate sludge was mobilized in the 95-m{sup 3} tank using a fixed bidirectional jet (inside diameter = 0.035 m) and a jet velocity of 6.4 m/s (21 ft/s).

Physical Description

22 p.

Notes

INIS; OSTI as DE96010736

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  • Summer national meeting of the American Institute of Chemical Engineers, Boston, MA (United States), 30 Jul - 2 Aug 1995

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  • Other: DE96010736
  • Report No.: CONF-9507119--10
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 238471
  • Archival Resource Key: ark:/67531/metadc667014

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 25, 2016, 12:11 p.m.

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Hylton, T.D.; Youngblood, E.L. & Cummins, R.L. Case study to remove radioactive hazardous sludge from long horizontal storage tanks, article, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc667014/: accessed October 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.