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Durability of glasses vitrified from high copper feed in the 774 Research Melter

Description: Small scale crucible studies were performed by Schumacher to examine the effects of formate and nitrate on glass redox at high copper levels. The results of the crucible studies were used to determine the regions where copper precipitates in the glass. However, durability tests were not performed on the glass samples. Studies were performed in the 774 Research Melter using a simulated feed from the Purex 4 Campaign in the Integrated DWPF Melter System (IDMS). Three runs were performed with this… more
Date: April 28, 1993
Creator: Andrews, M. K.
Partner: UNT Libraries Government Documents Department
open access

Glass Waste Forms for Oak Ridge Tank Wastes: Fiscal Year 1998 Report for Task Plan SR-16WT-31, Task B

Description: Using ORNL information on the characterization of the tank waste sludges, SRTC performed extensive bench-scale vitrification studies using simulants. Several glass systems were tested to ensure the optimum glass composition (based on the glass liquidus temperature, viscosity and durability) is determined. This optimum composition will balance waste loading, melt temperature, waste form performance and disposal requirements. By optimizing the glass composition, a cost savings can be realized dur… more
Date: May 10, 1999
Creator: Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Results of the DWPF Melter Drain Canister, S00209

Description: The Savannah River Technology Center (SRTC) was requested by the Engineering Section of the Defense Waste Processing Facility (DWPF) to characterize the drain canister filled during the DWPF Proficiency Runs. Testing of this canister, along with testing of the glass samples taken from the canister, was performed as part of a continuing effort to demonstrate compliance with the Waste Acceptance Product Specifications (WAPS)1 as outlined in the Waste Form Qualification Coordinating Plan (QCP).2. … more
Date: September 18, 1998
Creator: Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Glass formation development and testing for the vitrification of cesium-loaded Crystalline Silicotitanate (CST)

Description: As part of a joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC), Melton Valley Storage Tank supernate will be passed through a column of crystalline silicotitanate (CST) sorbent at ORNL. The cesium-loaded CST sorbent will subsequently be shipped to the SRTC for vitrification in a joule-heated melter. The CST sorbent contains significant quantities of titanium which historically have been difficult to incorporate into the glass structur… more
Date: July 1, 1997
Creator: Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Effect of MST on Crystallinity of CST/Sludge Glasses

Description: In support of the Salt Disposition team, the effects of monosodium titanate (MST) on two glass formulations were investigated. These glass formulations combined a blend-type sludge with Crystalline Silicotitanate (CST) and glass formers (or frit). The objective of the testing was to determine if the MST would lead to crystal formation in the glasses.
Date: November 18, 1998
Creator: Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Trip report: Marshall Space Center computed tomography

Description: BIR Inc. is a small company out of the Chicago area which sells equipment for producing images by tomography. They have built a relatively large instrument, called ACTIS, for NASA at the Marshall Space Center in Huntsville, Alabama and still gave access to this instrument. BIR has a grant from the Department of Energy (DOE) to determine the utility of computed tomography (CT) for characterization of nuclear and hazardous waste within the DOE complex. As part of this effort, the potential of thi… more
Date: December 31, 1991
Creator: Harbour, J. R. & Andrews, M. K.
Partner: UNT Libraries Government Documents Department
open access

Radioactive demonstration of DWPF product control strategy

Description: The effectiveness of the product and process control strategies that will be utilized by the Defense Waste Processing Facility (DWPF) was demonstrated during a campaign in the Shielded Cells Facility (SCF) of the Savannah River Technology Center (SRTC). The remotely operated process included the preparation of the melter feed, vitrification in a slurry-fed 1/100th scale melter and analysis of the glass product both for its composition and durability. The campaign processed approximately 10 kg (… more
Date: April 22, 1992
Creator: Andrews, M. K. & Bibler, N. E.
Partner: UNT Libraries Government Documents Department
open access

Trip report: Marshall Space Center computed tomography

Description: BIR Inc. is a small company out of the Chicago area which sells equipment for producing images by tomography. They have built a relatively large instrument, called ACTIS, for NASA at the Marshall Space Center in Huntsville, Alabama and still gave access to this instrument. BIR has a grant from the Department of Energy (DOE) to determine the utility of computed tomography (CT) for characterization of nuclear and hazardous waste within the DOE complex. As part of this effort, the potential of thi… more
Date: January 1, 1991
Creator: Harbour, J. R. & Andrews, M. K.
Partner: UNT Libraries Government Documents Department
open access

Radioactive demonstration of DWPF product control strategy

Description: The effectiveness of the product and process control strategies that will be utilized by the Defense Waste Processing Facility (DWPF) was demonstrated during a campaign in the Shielded Cells Facility (SCF) of the Savannah River Technology Center (SRTC). The remotely operated process included the preparation of the melter feed, vitrification in a slurry-fed 1/100th scale melter and analysis of the glass product both for its composition and durability. The campaign processed approximately 10 kg (… more
Date: April 22, 1992
Creator: Andrews, M. K. & Bibler, N. E.
Partner: UNT Libraries Government Documents Department
open access

Glass formulation development and testing for the vitrification of Oak Ridge tank waste

Description: As part of joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC), radioactive waste from four different ORNL tank farms will be immobilized. This work, which is funded by the DOE Office of Science and Technology, is designed to create a direct comparison between grouting and vitrification technologies. SRTC efforts have been focused on developing and testing glass formulations for the vitrification of the tank wastes. The radioactive wast… more
Date: June 17, 1997
Creator: Andrews, M. K. & Workman, P. J.
Partner: UNT Libraries Government Documents Department
open access

Glass formulation requirements for DWPF coupled operations using crystalline silicotitanates

Description: The design basis DWPF flowsheet couples the vitrification of two waste streams: (1) a washed sludge and (2) a hydrolyzed sodium tetraphenylborate precipitate product, PHA. The PHA contains cesium-137 which had been precipitated from the tank supernate with sodium tetraphenylborate. Smaller amounts of strontium and plutonium adsorbed on sodium titanate are also present with the PHA feed. Currently, DWPF is running a sludge-only flowsheet while working towards solutions to the problems encountere… more
Date: January 9, 1997
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Effect of CST ion exchange loading on the volume of glass produced during the vitrification demonstration at SRTC

Description: ORNL and SRTC have a joint project in which 25,000 gallons of supernate waste from the Melton Valley Storage Tanks at Oak Ridge will be treated by passage through a crystalline silicotitanate (CST) ion exchange medium. The CST was designed to sorb cesium, the primary radionuclide (Cs-137) in the supernate of the Melton Valley tanks. A smaller amount of strontium will also be sorbed. At least one drum of the loaded sorbent will then be shipped to SRTC where it will be mixed with glass formers an… more
Date: December 31, 1996
Creator: Andrews, M.K. & Harbour, J.R.
Partner: UNT Libraries Government Documents Department
open access

Glass results for the can-in-canister demonstration canister S00144

Description: During the Defense Waste Processing Facility (DWPF) Proficiency Runs, two test canisters containing small cans of surrogate plutonium glass were filled with glass. One of the test canisters contained a rack with eight small cans and one contained a rack with twenty small cans. The canister with eight small cans was discussed in another report.1 The canister with twenty small cans was sectioned by the Savannah River Technology Center (SRTC) and samples of the glass were removed for analysis. Thi… more
Date: July 24, 1996
Creator: Andrews, M.K. & Herman, D.T.
Partner: UNT Libraries Government Documents Department
open access

Compliance with Waste Acceptance Criteria of WIPP and NTS for Vitrified Low-Level and TRU Waste Forms

Description: A joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC) has been established to evaluate vitrification as an option for the immobilization of waste within ORNL tank farms. This paper presents details of calculations based on current best available analyses of the Oak Ridge Tanks on the limits for waste loadings imposed by the waste acceptance criteria.
Date: July 1, 1998
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Use of the existing shielded cells melter for CST vitrification

Description: Oak Ridge National Laboratory (ORNL) and SRTC are participating in a joint project in which supernate waste from the Melton Valley Storage Tanks at Oak Ridge (OR) will be treated by passage through a crystalline silicotitanate (CST) ion exchange medium1. The CST was designed to sorb cesium, the primary radionuclide (Cs-137) in the supernate of the Melton Valley tanks. A smaller amount of strontium will also be sorbed. The loaded sorbent will then be shipped to SRTC where it will be mixed with g… more
Date: December 4, 1996
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Compliance with the Nevada Test Site`s waste acceptance criteria for vitrified cesium-loaded crystalline silicotitanates

Description: As part of a joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC), Cs-137 loaded crystalline silicotitanate (CST) sorbent will be vitrified in a joule-heated melter. Glass formulation development for this CST sorbent is discussed in an accompanying abstract for this conference. One of the objectives for this project was to ensure that the vitrified waste form could be disposed of at the Nevada Test Site (NTS). To accomplish this objectiv… more
Date: June 1, 1997
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Glass formulation development and testing for the vitrification of DWPF HLW sludge coupled with crystalline silicotitanate (CST)

Description: An alternative to the In Tank Precipitation and sodium titanate processes at the Savannah River Site is the removal of cesium, strontium, and plutonium from the tank supernate by ion exchange using crystalline silicotitanate (CST). This inorganic material has been shown to effectively and selectively sorb these elements from supernate. The loaded CST could then be immobilized with High-Level Waste (HLW) sludge during vitrification. Initial efforts on the development of a glass formulation for a… more
Date: September 30, 1997
Creator: Andrews, M. K. & Workman, P. J.
Partner: UNT Libraries Government Documents Department
open access

Waste acceptance and waste loading for vitrified Oak Ridge tank waste

Description: The Office of Science and Technology of the DOE has funded a joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC) to evaluate vitrification and grouting for the immobilization of sludge from ORNL tank farms. The radioactive waste is from the Gunite and Associated Tanks (GAAT), the Melton Valley Storage Tanks (MVST), the Bethel Valley Evaporator Service Tanks (BVEST), and the Old Hydrofractgure Tanks (OHF). Glass formulation development f… more
Date: June 6, 1997
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Glass Formulation Development for the Vitrification of Oak Ridge Tank Waste

Description: Crystalline silicotitanate (CST) is a highly specific ion exchange material for cesium. In particular, CST has been successfully demonstrated with both simulants and actual supernates from Savannah River and Hanford tank wastes. As a disposal option, vitrification of the cesium-loaded CST coupled with High-Level Waste (HLW) has been proposed. However, the CST sorbent contains significant quantities of titanium which historically have been difficult to incorporate into the glass structure. There… more
Date: May 1, 1998
Creator: Andrews, M. K. & Workman, P. J.
Partner: UNT Libraries Government Documents Department
open access

Waste Acceptance for Vitrified Sludge from Oak Ridge Tank Farms

Description: The Tanks Focus Area of the DOE`s Office of Science and Technology (EM-50) has funded the Savannah River Technology Center (SRTC) to develop formulations which can incorporate sludges from Oak Ridge Tank Farms into immobilized glass waste forms. The four tank farms included in this study are: Melton Valley Storage Tanks (MVST), Bethel Valley Evaporation Service Tanks (BVEST), Gunite and Associated Tanks (GAAT), and Old Hydrofracture Tanks (OHF).The vitrified waste forms must be sent for disposa… more
Date: March 1, 1998
Creator: Harbour, J.R. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Initial Experience to Determine the Solubility of Salts in Low-Level Mix Waste Glasses

Description: Glass may be used to immobilize low-level mixed waste (LLMW) at the Savannah River Site because of its ability to accept a wide variety of components into its network structure. However, many common salts (sulfates, chlorides, phosphates, and chromates) present in the LLMW streams have limited solubility in glass. Processing and product problems may arise if the solubility of these salts is exceeded. In an effort to determine the factors that most affect salt solubilities, a statistical screeni… more
Date: February 17, 1995
Creator: Andrews, M.K. & Saur, C.C.
Partner: UNT Libraries Government Documents Department
open access

Vitrification of waste containing salts

Description: Technologies are currently being developed by U.S. Department of Energy`s nuclear waste sites to immobilize low-level and hazardous wastes for permanent or long-term disposal. This report describes recent efforts made at the Savannah River Site to examine the effects of salts on vitrification. Statistically designed screening experiments were performed to examine the solubility of several salt species in glass. The corrosion behavior of typical glass melter materials in glass melts containing h… more
Date: November 1, 1995
Creator: Marra, J.C. & Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Glass formulation development and testing for the vitrification of cesium-loaded crystalline silicotitanate (CST)

Description: Crystalline Silicotitanate (CST) is an inorganic ion exchange medium that was designed to sorb Cs-137, Sr-90 and several other radionuclides. CST exhibits high selectivity for the ion exchange of cesium from highly alkaline solutions containing large quantities of sodium. Through the Tanks Focus Area (TFA), Oak Ridge National Laboratory (ORNL) was funded to demonstrate the effectiveness of CST as an ion exchange material using supernate from the Melton Valley Storage Tanks (MVST). After process… more
Date: December 31, 1997
Creator: Andrews, M.K.
Partner: UNT Libraries Government Documents Department
open access

Comparison of TCLP and long-term PCT performance on low-level mixed waste glasses

Description: The Mixed Waste Integrated Program (MWIP) of the US Department of Energy (DOE) is currently investigating technologies for conversion of low-level mixed waste (LLMW) into a form suitable for permanent disposal. Vitrification is one of the preferred technologies since it is capable of consistently producing a durable, leach resistant wasteform, while simultaneously minimizing disposal volumes. Since vitrification of LLMW is a relatively new concept, final wasteform specifications have not been d… more
Date: June 1, 1994
Creator: Cicero, C. A.; Andrews, M. K. & Bickford, D. F.
Partner: UNT Libraries Government Documents Department
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