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in creator/contributor: "Edwards, R. E."

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Thermal history and crystallization characteristics of the DWPF glass waste form

The Defense Waste Processing Facility (DWPF) at the Savannah River Site will immobilize high-level radioactive waste by incorporating it in a stable borosilicate glass waste form suitable for long term storage in a geologic repository. The thermal history of the canistered waste form to be produced in DWPF was determined during filling and subsequent cooldown operations by simulating DWPF production conditions. Samples of simulated waste glass of projected compositions for the DWPF have been ex… more

Date: January 1, 1992

Creator: Marra, S. L.; Edwards, R. E. & Jantzen, Carol M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Control of DWPF melter feed composition

The Defense Waste Processing Facility will be used to immobilize Savannah River Site high-level waste into a stable borosilicate glass for disposal in a geologic repository. Proper control of the melter feed composition in this facility is essential to the production of glass which meets product durability constraints dictated by repository regulations and facility processing constraints dictated by melter design. A technique has been developed which utilizes glass property models to determine … more

Date: December 31, 1989

Creator: Brown, K. G.; Edwards, R. E.; Postles, R. L. & Randall, C. T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Steam stripping of polycyclic aromatics from simulated high-level radioactive waste

The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) will be the United States` first facility to process High Level radioactive Waste (HLW) into a borosilicate glass matrix. The removal of aromatic precipitates by hydrolysis, evaporation, liquid-liquid extraction and decantation will be a key step in the processing of the HLW. This step, titled the Precipitate Hydrolysis Process, has been demonstrated by the Savannah River Technology Center with the Precipitate Hydroly… more

Date: December 31, 1992

Creator: Lambert, D. P.; Shah, H. B.; Young, S. R.; Edwards, R. E. & Carter, J. T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Thermal history and crystallization characteristics of the DWPF glass waste form

Date: July 1, 1992

Creator: Marra, S. L.; Edwards, R. E. & Jantzen, Carol M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Precipitate hydrolysis experimental facility (PHEF): Run 64 report

The significant findings of Run 64 are: (a) Carbon dioxide was demonstrated to be an acceptable inertant for the actual hydrolysis process. However, based on the severe degradation of the tetraphenylborate (TPB) precipitate slurry stored in the Precipitate Hold Tank (PHT) at PHEF following Run 65, further evaluation of the suitability of carbon dioxide as an inertant for the long term storage of precipitate slurries is warranted. (b) Phenylboronic acid (PBA) reaction kinetics were excellent wit… more

Date: July 29, 1994

Creator: Lambert, D. P.; Edwards, R. E.; Shah, H. B. & Young, S. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Control of DWPF melter feed composition

Date: January 1, 1989

Creator: Brown, K. G.; Edwards, R. E.; Postles, R. L. & Randall, C. T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Holledge gauge failure testing using concurrent information processing algorithm

For several decades, computerized information processing systems and human information processing models have developed with a good deal of mutual influence. Any comprehensive psychology text in this decade uses terms that originated in the computer industry, such as ``cache`` and ``memory``, to describe human information processing. Likewise, many engineers today are using ``artificial intelligence``and ``artificial neural network`` computing tools that originated as models of human thought to… more

Date: April 11, 1996

Creator: Weeks, G. E.; Daniel, W. E.; Edwards, R. E.; Jannarone, R. J.; Joshi, S. N.; Palakodety, S. S. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Recovery of phosphates from elemental phosphorus bearing wastes

A process for oxidizing aqueous elemental phosphorus containing residues (sludges) to produce orthophosphate containing slurries suitable for subsequent reaction with ammonia to produce nitrogen and phosphate containing fertilizer products is presented. It comprises reacting aqueous elemental phosphorus containing residues with certain special mixtures of concentrated nitric acid and sulfuric acid to effect the conversion of the elemental phosphorus into mostly orthophosphoric acid and very lit… more

Date: October 1, 1994

Creator: Edwards, R. E.; Moore, O. E. & Sullivan, J. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department