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in creator/contributor: "Wilhite, E L"

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Actinide-soil interactions in waste management at the Savannah River Plant

Three aspects of the transuranium (TRU) nuclide-soil interaction were studied in connection with Savannah River Plant (SRP) burial ground operations. Results of the studies are reported as three separate parts of this report. (auth)

Date: January 1, 1976

Creator: Holcomb, H.P.; Horton, J.H. & Wilhite, E.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Model to project dose-to-man from buried solid waste

To plan for the postoperational surveillance and control of the Savannah River Plant solid waste burial site, a model is being developed to simulate movement of radionuclides from buried solid waste through the environment to man. Results from the study of the model will be used to validate current operating limits for burial and to establish criteria for future surveillance and control. A preliminary model has been formulated to estimate the rate and extent of /sup 90/Sr movement through a set… more

Date: January 1, 1977

Creator: Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Migration of transuranic nuclides in earthen burial trenches at the Savannah River Plant

The objectives, incentives and benefits derived from the data collected at the Savannah River Laboratory on waste migration were discussed, and encapsulated transmission waste burial data were presented. Factors influencing radionuclide migration were characterized. A map of the burial ground was included. The trench sampling strategy was summarized. A description of the coring samples was included. Actual soil recovery results were tabulated, and a specific problem which reduced recoveries eve… more

Date: January 1, 1979

Creator: Johnson, D. R. & Wilhite, E. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Remote Experimental Facility to Solidify SRP High-Level Waste

Small-scale equipment has been developed and installed in a remotely operated experimental facility at the Savannah River Laboratory (SRL) to study immobilization of radioactive waste in glass. The facility has been in operation for nine months. During this period, two 25-liter batches of high-level waste from different SRP waste storage tanks were processed. The waste was boiled in sodium hydroxide to dissolve alumina trihydrate, washed with water to remove soluble salts, dried in a fluid-bed … more

Date: January 1, 1979

Creator: Galloway, R. M.; Plodinec, M. J.; Wilhite, E. L. & Chismar, P. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Characterization of off-gases from a small-scale, joule-heated ceramic melter for nuclear waste vitrification. [Ru, Cl, F, /sup 137/Cs]

This paper confirmed with actual nuclear waste the thermodynamic predictions of the fate of some of the semivolatiles in off-gas. Ruthenium behaves erratically and it is postulated that it migrates as a finely divided solid, rather than as a volatile oxide. Provisions for handling these waste off-gasses will be incorporated in the design of facilities for vitrifying SRP waste.

Date: January 1, 1980

Creator: Woolsey, G.B. & Wilhite, E.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Small-scale demonstration of high-level radioactive waste processing and solidification using actual SRP waste

A small-scale demonstration of the high-level radioactive waste solidification process by vitrification in borosilicate glass is being conducted using 5-6 liter batches of actual waste. Equipment performance and processing characteristics of the various unit operations in the process are reported and, where appropriate, are compared to large-scale results obtained with synthetic waste.

Date: January 1, 1980

Creator: Okeson, J K; Galloway, R M; Wilhite, E L; Woolsey, G B & B, Ferguson R

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Environmental effects of a tritium release from the Savannah River Plant

On March 27, 1981, a small amount of tritiated water was inadvertently released from the tritium-processing facility during a routine maintenance operation. This report describes the environmental effects of this release both on the SRP site and offsite. Also, the operation of the WIND (Wind Information and Display) emergency response system during the incident is discussed, and the predicted and diagnosed behavior of the tritium plume is compared with tritium concentrations deduced from air, v… more

Date: November 1, 1981

Creator: Garrett, A. J.; Wilhite, E. L. & Buckner, M. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Savannah River Laboratory DOSTOMAN code: a compartmental pathways computer model of contaminant transport

The Savannah River Laboratory DOSTOMAN code has been used since 1978 for environmental pathway analysis of potential migration of radionuclides and hazardous chemicals. The DOSTOMAN work is reviewed including a summary of historical use of compartmental models, the mathematical basis for the DOSTOMAN code, examples of exact analytical solutions for simple matrices, methods for numerical solution of complex matrices, and mathematical validation/calibration of the SRL code. The review includes th… more

Date: January 1, 1985

Creator: King, C M; Wilhite, E L; Root, Jr, R W; Fauth, D J; Routt, K R; Emslie, R H et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Waste salt disposal at the Savannah River Plant

High-level nuclear wastes will be processed at the Savannah River Plant (SRP) to separate the high-level fraction from the low-level fraction. The separation will be accomplished in existing waste tanks by a process combining precipitation, adsorption, and filtration. The high-level fraction will be vitrified into borosilicate glass in the Defense Waste Processing Facility (DWPF) for disposal in a Federal repository. The low-level fraction, called decontaminated salt solution, will be mixed wit… more

Date: January 1, 1986

Creator: Wilhite, E.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Comparison of unsaturated flow and transport models with volume and nitrate measurements from a pilot-scale, in-situ lysimeter with different geometry low level radioactive waste designs

Results from a large-scale field lysimeter experiment containing three thirty-ton monoliths formed from actual decontaminated nuclear waste have been used to validate flow and transport models. The models used are a two-dimensional, finite difference transport and diffusion model. The best match of nitrate concentrations calculated to be released from the monoliths with values observed from the lysimeter occurred with monolith diffusivities in the range of 5 {times} 10{sup -9} to 2 {times} 10{s… more

Date: January 1, 1989

Creator: Wilhite, E. L.; Lantz, R. B.; McIntyre, P. F.; Statham, W. H.; Longsine, D. E. (Westinghouse Savannah River Co., Aiken, SC (USA); Intera Technologies, Inc., Austin, TX (USA) et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Program for low-level radioactive waste disposal at the Savannah River Plant, a US nuclear materials production site

An integrated program has been developed for disposal of low-level radioactive wastes and associated mixed (radioactive-hazardous) and transuranic (TRU) wastes generated at the Savannah River Plant (SRP). The program, supported by existing as well as new planned facilities, features a systems management approach, in which final disposal sites are specially designed and constructed for appropriately segregated waste streams, and intermediate treatment facilities are provided to reduce volumes an… more

Date: January 1, 1989

Creator: Wilhite, E. L.; Cook, J. R. & McDonell, W. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Low-level liquid waste disposal at the Savannah River Site: A large scale demonstration of saltstone

Lysimeters are large-scale, field experiments used at the Savannah River Site (SRS) to measure the effect of percolating rainfall on the release of contaminants from wasteforms. The saltstone lysimeters described are demonstrations of a disposal concept for a low-level radioactive waste resulting from the processing of high-level defense waste for vitrification. Results from the lysimeters confirm the efficacy of the slag formulation in retaining chromium and technetium. Lysimeter results were … more

Date: January 1, 1990

Creator: Clark, S.B. & Wilhite, E.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Uranium waste disposal at the Savannah River Site

The Savannah River Site generates waste containing depleted, natural, and enriched uranium residue. The past and current practice for disposal of this waste at the Savannah River Site have been assessed using radionuclide pathway analysis to estimate environmental impact of closure alternatives for existing disposal sites, and to assist in the development of improved disposal facilities in the near future. This paper outlines the status of uranium waste management technology as currently practi… more

Date: January 1, 1990

Creator: Cook, J. R.; McDonell, W. R. & Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Defense Waste Processing Facility

The information contained in this report is intended to supplement the original Environmental Impact Statement (EIS) for the Defense Waste Processing Facility (DWPF). Since the original EIS in 1982, alterations have been made to he conceptual process that reduce the impact to the groundwater. This reduced impact is documented in this report along with an update of the understanding of seismology and geology of the Savannah River Site. 6 refs., 2 figs., 2 tabs.

Date: May 1, 1990

Creator: Haselow, J. S.; Wilhite, E. L. & Stieve, A. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Low-level liquid waste disposal at the Savannah River Site: A large scale demonstration of saltstone

Date: December 31, 1990

Creator: Clark, S. B. & Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Uranium waste disposal at the Savannah River Site

Date: December 31, 1990

Creator: Cook, J. R.; McDonell, W. R. & Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The performance assessment process for DOE low-level waste disposal facilities

Safety of the low-level waste disposal facilities, as well as al US DOE facilities, is a primary criterion in their design and operation. Safety of low-level waste disposal facilities is evaluated from two perspectives. Operational safety is evaluated based on the perceived level of hazard of the operation. The safety evaluations vary from simple safety assessments to very complex safety analysis reports, depending on the degree of hazard associated with the facility operation. Operational requ… more

Date: January 1, 1992

Creator: Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance assessment review for Department of Energy

The United State Department of Energy (US DOE) disposes of low-level radioactive waste in near-surface disposal facilities. Safety of the disposal operations is evaluated for operational safety as well as long-term safety. Operational safety is evaluated based on the perceived level of hazard of the operation and may vary from a simple safety assessment to a safety analysis report. Long-term safety of all low-level waste disposal systems is evaluated through the conduct of a radiological perfor… more

Date: January 1, 1992

Creator: Wilhite, E.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance assessment for low-level radioactive waste management and disposal at DOE facilities: Requirements, review process, and lessons learned

Department of Energy (DOE) facilities, located at sites across the nation, generate large quantities and a wide variety of low-level radioactive waste (LLRW) from nuclear defense production and research and development activities. All DOE-generated LLRW is disposed of at DOE disposal sites. Most DOE waste generating sites do not have disposal facilities on site and so must ship their LLRW to one of six currently active DOE disposal locations. Four disposal sites are located in generally arid re… more

Date: April 1, 1992

Creator: Neuder, S. M. & Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance assessment for low-level radioactive waste management and disposal at DOE facilities: Requirements, review process, and lessons learned

Date: April 1, 1992

Creator: Neuder, S.M. (Pacific Northwest Lab., Washington, DC (United States)) & Wilhite, E.L. (Westinghouse Savannah River Co., Aiken, SC (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance assessment review for Department of Energy

Date: May 1, 1992

Creator: Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The performance assessment process for DOE low-level waste disposal facilities

Date: November 1, 1992

Creator: Wilhite, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The United States Department of Energy Process for Performance Assessment for Disposal of Low-Level Radioactive Waste

The US Department of Energy (DOE) manages disposal of low-level radioactive waste through the requirements of DOE Order 5820.2A on Radioactive Waste Management. The order specifies long-term performance objectives for permanent disposal, requires a performance assessment to determine compliance with those objectives, and establishes a Peer Review Panel to review those assessments for technical quality and completeness. A Performance Assessment Task Team has been established to provide guidance … more

Date: February 1, 1993

Creator: Wood, D. E.; Owens, K. W.; Wilhite, E. L. & Duggan, G. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Radiological performance assessment for the E-Area Vaults at the Savannah River Site, Part 1: Simulation of radionuclide migration in the near-field

Two papers presented in this session cover a numerical simulation of radionuclide migration from Savannah River Site`s E-Area Vaults (EAV) to the groundwater. These vaults are constructed below the ground surface and above the historical high water table. This paper covers the simulation of radionuclide migration in the unsaturated zone. A saturated zone model containing aquifers affected by the facility was also developed. The rate (Curies/yr) of radionuclide release to the water table obtaine… more

Date: February 1, 1994

Creator: Yu, A. D.; Cook, J. R.; Lam, P. S.; Wilhite, E. L. & Smith, C. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department