Remotely controlled reagent feed system for mixed waste treatment Tank Farm

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Description

LLNL has developed and installed a large-scale. remotely controlled, reagent feed system for use at its existing aqueous low-level radioactive and mixed waste treatment facility (Tank Farm). LLNL`s Tank Farm is used to treat aqueous low-level and mixed wastes prior to vacuum filtration and to remove the hazardous and radioactive components before it is discharged to the City of Livermore Water Reclamation Plant (LWRP) via the sanitary sewer in accordance with established limits. This reagent feed system was installed to improve operational safety and process efficiency by eliminating the need for manual handling of various reagents used in the aqueous ... continued below

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14 p.

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Dennison, D.K.; Bowers, J.S. & Reed, R.K. February 1, 1995.

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Description

LLNL has developed and installed a large-scale. remotely controlled, reagent feed system for use at its existing aqueous low-level radioactive and mixed waste treatment facility (Tank Farm). LLNL`s Tank Farm is used to treat aqueous low-level and mixed wastes prior to vacuum filtration and to remove the hazardous and radioactive components before it is discharged to the City of Livermore Water Reclamation Plant (LWRP) via the sanitary sewer in accordance with established limits. This reagent feed system was installed to improve operational safety and process efficiency by eliminating the need for manual handling of various reagents used in the aqueous waste treatment processes. This was done by installing a delivery system that is controlled either remotely or locally via a programmable logic controller (PLC). The system consists of a pumping station, four sets of piping to each of six 6,800-L (1,800-gal) treatment tanks, air-actuated discharge valves at each tank, a pH/temperature probe at each tank, and the PLC-based control and monitoring system. During operation, the reagents are slowly added to the tanks in a preprogrammed and controlled manner while the pH, temperature, and liquid level are continuously monitored by the PLC. This paper presents the purpose of this reagent feed system, provides background related to LLNL`s low-level/mixed waste treatment processes, describes the major system components, outlines system operation, and discusses current status and plans.

Physical Description

14 p.

Notes

INIS; OSTI as DE95011965

Source

  • 3. American Society for Mechanical Engineers (ASME) biennial mixed waste symposium, Baltimore, MD (United States), 7-11 Aug 1995

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  • Other: DE95011965
  • Report No.: UCRL-JC--118898
  • Report No.: CONF-950877--8
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 79112
  • Archival Resource Key: ark:/67531/metadc739625

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  • February 1, 1995

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 23, 2016, 3:30 p.m.

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Dennison, D.K.; Bowers, J.S. & Reed, R.K. Remotely controlled reagent feed system for mixed waste treatment Tank Farm, article, February 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc739625/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.