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in subjects: "Grouting"

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Decommissioning of a grout- and waste-filled storage tank in the 200 East Area of the Hanford Site

A self-concentrating waste tank located at the Strontium Semiworks Facility in the 200 East Area of the Hanford Site will be decommissioned following waste removal. During a previous decommissioning phase, the tank, thought to be empty, was filled with grout to prevent it from collapsing over time. Several years later, an agitator rod was pulled from within the tank and found to contain significant amounts of radiation, indicating there was still radioactive waste in the tank. Several alternati… more

Date: January 1, 1991

Creator: Marske, S.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Development of potential uses for the residue from fluidized bed combustion processes. Quarterly technical progress report, June-August 1980

The following conclusions are recorded: The road base mixes in which quartz silica was substituted for the pulverized coal fly ash gave compressive strengths similar to those using the pulverized coal fly ash. The compressive strengths of road base mixes using recently produced AFB residue were of the same order of magnitude as those obtained in 1977, although the data covers a broad range of test results. Briquettes, produced from a number of trial mixes, show promise as a synthetic aggregate.… more

Date: January 1, 1980

Creator: Minnick, L.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solidification/stabilization of technetium in cement-based grouts

Mixed low-level radioactive and chemically hazardous process treatment wastes from the Portsmouth Gaseous Diffusion Plant are stabilized by solidification in cement-based grouts. Conventional portland cement and fly ash grouts have been shown to be effective for retention of hydrolyzable metals (e.g., lead, cadmium, uranium and nickel) but are marginally acceptable for retention of radioactive Tc-99, which is present in the waste as the highly mobile pertechnate anion. Addition of ground blast … more

Date: January 1, 1990

Creator: Gilliam, T. M.; Bostick, W. D.; Spence, R. D.; Shoemaker, J. L. (Oak Ridge National Lab., TN (USA); Oak Ridge Gaseous Diffusion Plant, TN (USA); Oak Ridge National Lab., TN (USA) et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Task plan for TARA-II compaction and grouting demonstration

This task directly supports the corrective measures evaluation for the closure of Solid Waste Storage Area (SWSA) 6 but also supports technology development for the closure of other Oak Ridge National Laboratory (ORNL) SWSAs and waste management units. Previous demonstrations have established the effectiveness of dynamic compaction and in situ grouting in stabilizing burial trenches against subsidence, which would otherwise compromise the support of infiltration barrier structures designed to p… more

Date: November 1, 1991

Creator: Spalding, B. P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Subsurface stabilization by grouting of a simulated underground tank

A moisture barrier using water, sodium silicate, formamide, calcium chloride and penechem with a gel time of one-half hour was constructed around a simulated tank 10 feet deep by 10 feet diameter in the subsurface of the 200 West Area. As a test of the moisture barrier integrity, the volume which would normally be occupied by a tank was excavated and filled with water. The barrier was unable to contain the water. The failure to achieve a water-tight barrier was attributed to a leak in the floor… more

Date: January 27, 1977

Creator: Wiater, P.J. & Higley, B.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Characterization of simulated low-level waste grout produced in a pilot-scale test

The objectives of a pilot-scale grout test were to determine the homogeneity of the grout produced under conditions similar to those planned for the TGF, to evaluate performance of candidate grout processing equipment for the TGF, and to evaluate properties of grout that was produced during continuous operation over an extended time period and cured in a large monolith. This report addresses the first and third objectives. Tests were conducted on pilot-scale grout slurry, simulated waste soluti… more

Date: February 1, 1988

Creator: Lokken, R. O.; Reimus, M. A.; Martin, P. F. C. & Geldart, S. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Design of pumpable cement-based grouts for the immobilization of hazardous materials

Cement-based grouts have proven to be an economical and environmentally acceptable means of waste disposal. Costs can be reduced if the grout is pumped to the dispoal site. This paper presents a systematic approach to guide the development of pumpable grouts. 7 refs., 1 fig.

Date: January 1, 1986

Creator: Gilliam, T. M.; McDaniel, E. W. & Dole, L. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

1987 Oak Ridge model conference: Proceedings: Volume I, Part 2, Waste Management

A conference sponsored by the United States Department of Energy (DOE) was held on Waste Mangement. Topics discussed were waste stabilization technologies regulations and standards, innovative treatment technology, waste stabilization projects. Individual projects are processed separately for the data bases. (CBS)

Date: January 1, 1987

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Prediction of critical grout parameters: critical flow rate

Waste disposal is rapidly becoming one of the most important technological endeavors of our time and fixation of waste in cement-based materials is an important part of the endeavor. Investigations of given wastes are usually individually conducted and reported. In this study, data obtained from investigation of critical flow rates for three distinctly different wastes are correlated with apparent viscosity data via a single empirical equation. Critical flow rate, which is an important variable… more

Date: January 1, 1986

Creator: Tallent, O. K.; McDaniel, E. W.; Godsey, T. T. & Dodson, K. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Statistical experimental design for saltstone mixtures

We used a mixture experimental design for determining a window of operability for a process at the Savannah River Site Defense Waste Processing Facility (DWPF). The high-level radioactive waste at the Savannah River Site is stored in large underground carbon steel tanks. The waste consists of a supernate layer and a sludge layer. {sup 137}Cs will be removed from the supernate by precipitation and filtration. After further processing, the supernate layer will be fixed as a grout for disposal in … more

Date: January 1, 1991

Creator: Harris, S.P. & Postles, R.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Grouting as a waste immobilization/disposal method

This presentation will discuss grouting. This presentation will discuss the application of a variety of cement-based grouting techniques available for disposal of environmentally harmful materials. Areas discussed are in situ grouting of pits, ponds and lagoons, grouting as remedial action, and fixation for disposal in burial trenches or vaults. 6 refs., 5 figs., 3 tabs.

Date: January 1, 1988

Creator: McDaniel, E.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Disposal of liquid radioactive wastes through wells or shafts

This report describes disposal of liquids and, in some cases, suitable solids and/or entrapped gases, through: (1) well injection into deep permeable strata, bounded by impermeable layers; (2) grout injection into an impermeable host rock, forming fractures in which the waste solidifies; and (3) slurrying into excavated subsurface cavities. Radioactive materials are presently being disposed of worldwide using all three techniques. However, it would appear that if the techniques were verified as… more

Date: January 1, 1982

Creator: Perkins, B.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The strengthening and repair of underground structures: A new approach to the management of nuclear waste

This paper presents three closely related ideas and technologies: (1) The secure, repairable, long time confinement of nuclear radioactive waste underground by a large surrounding region of compressive overstress; (2) The inherent tectonic weakness and vulnerability of the normal underground environment and its modification by overstress; (3) The process of creating overstress by the sequential periodic high pressure injection of a finite gel strength rapid setting grout. 12 refs., 6 figs.

Date: January 1, 1991

Creator: Colgate, S. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The Hybrid Treatment Process for treatment of mixed radioactive and hazardous wastes

This paper describes a new process for treating mixed hazardous and radioactive waste, commonly called mixed waste. The process is called the Hybrid Treatment Process (HTP), so named because it is built on the 20 years of experience with vitrification of wastes in melters, and the 12 years of experience with treatment of wastes by the in situ vitrification (ISV) process.

Date: April 1, 1992

Creator: Ross, W.A. & Kindle, C.H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Examination of sample of grout after 63 years exposure underground. Technical report

During an investigation of the Troy Lock and Dam, New York, a core was recovered that contained part of a metal anchor that had been grouted into foundation rock. Since this grout was about 63 years old and had presumably been continuously below the water table, it provided an opportunity to study the effect of this environment for this period of time on the phase composition and microstructure of this grout. The phase composition of the grout was studied by x-ray diffraction; its microstructur… more

Date: May 1, 1981

Creator: Rhoderick, J.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Laboratory leach tests of phosphate/sulfate waste grout and leachate adsorption tests using Hanford sediment

An assessment of the long-term risks posed by grout disposal at Hanford requires data on the ability of grout to resist leaching of waste species contained in the grout via contact with water that percolates through the ground. Additionally, data are needed on the ability of Hanford sediment (soil) surrounding the grout and concrete vault to retard migration of any wastes released from the grout. This report describes specific laboratory experiments that are producing empirical leach rate data … more

Date: December 1, 1987

Creator: Serne, R. J.; Martin, W. J.; McLaurine, S. B.; Airhart, S. P.; LeGore, V. L. & Treat, R. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Underground stress engineering: the lifting and stabilization of underground voids

The theoretical basis of how grout, i.e., concrete, pumped into rock fractures prevents the caving of underground tunnel and cavity roofs is presented, and the calculation of how much grout material must be injected to lift a dome and create a useful rubble stope in an underground cavity is described. (LCL)

Date: January 1, 1977

Creator: Colgate, S. A.; Petschek, A. G.; Browning, R. V. & Bowers, N. K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Preliminary analysis of treatment strategies for transuranic wastes from reprocessing plants

This document provides a comparison of six treatment options for transuranic wastes (TRUW) resulting from the reprocessing of commercial spent fuel. Projected transuranic waste streams from the Barnwell Nuclear Fuel Plant (BNFP), the reference fuel reprocessing plant in this report, were grouped into the five categories of hulls and hardware, failed equipment, filters, fluorinator solids, and general process trash (GPT) and sample and analytical cell (SAC) wastes. Six potential treatment option… more

Date: July 1, 1985

Creator: Ross, W.A.; Schneider, K.J.; Swanson, J.L.; Yasutake, K.M. & Allen, R.P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Recommended analysis plan for the borehole plugging program potash core test

A four-year old plugged potash core hole near the Waste Isolation Pilot Plant (WIPP) site in southeastern New Mexico has been proposed for overcoring, in order to examine the behavior of known grout mix constituents in contact with a variety of rock types during an extended grout-curing interval. This report recommends that various geochemical analyses be applied to the core samples containing both grout and rock and the interface between the two. The methods to be used include optical petrogra… more

Date: May 1, 1980

Creator: Lambert, S. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Task plan to evaluate the effectiveness of in situ grouting of an ORNL waste burial trench with a cement-based grout

This task will demonstrate the feasibility of using an in situ grouting technique with a particulate-grout formulation as a closure action to stabilize waste trenches in Solid Waste Storage Area (SWSA) 6. It also supports technology development for closure of other SWSAs. A particulate grout will be formulated using cement-bentonite and fly ash from a coal-fired power plant. The grout solids will be dry-blended, mixed with water, and injected (using {similar to}5 to 10 lb/in.{sup 2} pressure) i… more

Date: November 1, 1991

Creator: Francis, C.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Demonstration of a steam jet scrubber off-gas system and the burner efficiency of a mixed waste incinerator facility

A full-scale incinerator system, the Consolidated Incineration Facility (CIF), is being designed to process solid and liquid low-level radioactive, mixed, and RCRA hazardous waste. This facility will consist of a rotary kiln, secondary combustion chamber (SCC), and a wet off-gas system. A prototype steam jet scrubber off-gas system has been tested to verify design assumptions for the CIF. The scrubber wastewater will be immobilized in a cement matrix after the blowdown has been concentrated to … more

Date: January 1, 1988

Creator: Holmes, H & Charlesworth, D L

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Leach tests on grouts made with actual and trace metal-spiked synthetic phosphate/sulfate waste

Pacific Northwest Laboratory conducted experiments to produce empirical leach rate data for phosphate-sulfate waste (PSW) grout. Effective diffusivities were measured for various radionuclides ({sup 90}Sr, {sup 99}Tc, {sup 14}C, {sup 129}I, {sup 137}Cs, {sup 60}Co, {sup 54}Mn, and U), stable major components (NO{sub 3}{sup {minus}}, SO{sub 4}{sup 2{minus}}, H{sub 3}BO{sub 3}, K and Na) and the trace constituents Ag, As, Cd, Hg, Pb, and Se. Two types of leach tests were used on samples of actual… more

Date: October 1, 1989

Creator: Serne, R. J.; Martin, W. J.; LeGore, V. L.; Lindenmeier, C. W.; McLaurine, S. B.; Martin, P. F. C. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Complex concentrate pretreatment FY 1986 progress report

After of the transuranic elements are removed from complex concentrate waste by the TRUEX process, the remaining waste will be grouted for final storage. The purpose of this project, conducted at the Pacific Northwest Laboratory (PNL), is to support a future decision to grout the complexant waste without destroying the organic contents. In work performed this year, it has been demonstrated that grouts with acceptable parameters for the Transportable Grout Facility can be made using actual waste… more

Date: September 1, 1986

Creator: lokken, R O; Scheele, R D; Strachan, D M & Toste, A P

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Leach and EP (extraction procedure) toxicity tests on grouted waste from Tank 106-AN

Pacific Northwest Laboratory is conducting laboratory experiments to produce leach rate data for various waste species that will be contained in grout at Hanford. In the work reported here, grout made from Tank 106-AN liquid waste was used to produce empirical leach rate data for several radionuclides ({sup 60}Co, {sup 90}Sr, {99}Tc, {129}I, {137}Cs, and {sup 241}Am), stable major components (NO{sub 3}{sup {minus}}, NO{sub 2}{sup {minus}}, F, Cl, and Na), and trace metals (Cr, Mo, and Ni). Two … more

Date: September 1, 1989

Creator: Serne, R. J.; Martin, W. J.; Lokken, R. O.; LeGore, V. L.; Lindenmeier, C. W. & Martin, P. F. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department