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DWPF waste glass Product Composition Control System

Description: The Defense Waste Processing Facility (DWPF) will be used to blend aqueous radwaste (PHA) with solid radwaste (Sludge) in a waste receipt vessel (the SRAT). The resulting SRAT material is transferred to the SME an there blended with ground glass (Frit) to produce a batch of melter feed slurry. The SME material is passed to a hold tank (the MFT) which is used to continuously feed the DWPF melter. The melter. The melter produces a molten glass wasteform which is poured into stainless steel canist… more
Date: January 1, 1992
Creator: Brown, K.G. & Postles, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Video monitoring system for enriched uranium casting furnaces

Description: A closed-circuit television (CCTV) system was developed to upgrade the remote-viewing capability on two oralloy (highly enriched uranium) casting furnaces in the Y-12 Plant. A silicon vidicon CCTV camera with a remotely controlled lens and infrared filtering was provided to yield a good-quality video presentation of the furnace crucible as the oralloy material is heated from 25 to 1300/sup 0/C. Existing tube-type CCTV monochrome monitors were replaced with solid-state monitors to increase the s… more
Date: March 1, 1978
Creator: Turner, P. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron induced gamma spectrometry for on-line compositional analysis in coal conversion and fluidized-bed combustion plants

Description: Nuclear techniques involving relatively penetrating radiation may offer the possibility of non-invasive, continuous on-line instrumental monitoring which is representative of the full process stream. Prompt gamma rays following neutron capture are particularly attractive because the penetrating power of the neutrons and the, typically several MeV, capture gammas makes possible interrogation of material within a pipe. We are evaluating neutron capture gamma techniques for this application, both … more
Date: January 1, 1977
Creator: Herzenberg, C. L.; O'Fallon, N. M.; Yarlagadda, B. S.; Doering, R. W.; Cohn, C. E.; Porges, K. G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Savannah River Site computing architecture migration guide

Description: The SRS Computing Architecture is a vision statement for site computing which enumerates the strategies which will guide SRS computing efforts for the 1990s. Each strategy is supported by a number of feature statements which clarify the strategy by providing additional detail. Since it is a strategic planning document, the Architecture has sitewide applicability and endorsement but does not attempt to specify implementation details. It does, however, specify that a document will be developed to… more
Date: July 30, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detection sensitivity of x-ray CT imaging for NDE of green-state ceramics

Description: Improved ceramic-processing methods that use pressure slip-casting and injection molding are being developed at Norton Advanced Ceramics, with a goal of producing reliable structural ceramics for advanced heat engines. Nondestructive evaluation (NDE) of ceramic parts at different stages of processing can provide useful diagnostic information to help improve processing techniques. For example, an evaluation of density gradients in as-cast green-body samples can be used to judge mold performance … more
Date: 1991~
Creator: Gopalsami, N.; Rizo, P.; Ellingson, W. A. & Tracey, D. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

On-line chemical composition analyzer development

Description: The energy consumed in distillation processes in the United States represents nearly three percent of the total national energy consumption. If effective control of distillation columns can be accomplished, it has been estimated that it would result in a reduction in the national energy consumption of 0.3%. Real-time control based on mixture composition could achieve these savings. However, the major distillation processes represent diverse applications and at present there does not exist a pro… more
Date: February 1, 1992
Creator: Roberts, M.J.; Garrison, A.A.; Muly, E.C. & Moore, C.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On-line analysis of chemical composition using an FT-Raman spectrometer in the near-ir

Description: Newly commercialized Fourier transform Raman spectroscopic instrumentation provides a simpler alternative for vibrational spectroscopic analysis. Instrument vendors currently design for laboratory use, but there are many potential process applications of these stable, easy to use instruments. Raman spectroscopy is highly suited to analysis of aqueous samples. Near infrared excitation minimized fluorescence interference and allows for remote operation via fiber optic probes. The Department of En… more
Date: January 1, 1992
Creator: Garrison, A.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advances in processing nuclear waste glasses

Description: The vitrification of nuclear waste glasses is presenting unique challenges to glass technologists. On the one hand, the composition of the most important constituent of the glass batch/--/the waste/--/may vary widely. On the other hand, the vitrification process itself must be tightly controlled to ensure product quality, public safety, and process reliability. This has led to several important developments in waste vitrification technology, all aimed at improving process control. These include… more
Date: January 1, 1988
Creator: Plodinec, M J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of artificial intelligence to melter control: Realtime process advisor for the scale melter facility

Description: The Defense Waste Processing Facility (DWPF) at the Savannah River Plant (SRP) is currently under construction and when completed will process high-level radioactive waste into a borosilicate glass wasteform. This facility will consist of numerous batch chemical processing steps as well as the continuous operation of a joule-heated melter and its off-gas treatment system. A realtime process advisor system based on Artificial Intelligence (AI) techniques has been developed and is currently in us… more
Date: January 1, 1988
Creator: Edwards, Jr, R E
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optimization of film synthesized rare earth transition metal permanent magnet systems

Description: Progress is reported in three areas: high coercivity Sm-Fe-Ti-V, Sm-Fe-Zr, and two element Sm-Fe Sm{sub 5}(Fe,T){sub 17} type crystalline phases; ThMn{sub 12} type pseudobinary SmFe{sub 12-x}T{sub x}(0{le}{times}{le}1.5); and sputter process control for the synthesis of precisely textured rare earth-transition metal magnetic films. (DLC)
Date: January 1, 1992
Creator: Cadieu, F.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Redox control of electric melters with complex feed compositions. Part II: preliminary limits for radioactive waste melters

Description: Melter redox control is necessary for safe and continued melter operation. A combination of feed composition control, melter operational controls and monitors, and periodic determination of product glass redox state is sufficient to meet operating and safety requirements. Mossbauer spectroscopy, or other methods which determine the Fe(II)/Fe(III) ratio of the glass product, can be used to determine the oxidation state of the glass and thereby assess operating conditions. Slightly reducing condi… more
Date: January 1, 1985
Creator: Bickford, D F; Diemer, Jr, R B & Iverson, D C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A comparison of three self-tuning control algorithms developed for the Bristol-Babcock controller

Description: A brief overview of adaptive control methods relating to the design of self-tuning proportional-integral-derivative (PID) controllers is given. The methods discussed include gain scheduling, self-tuning, auto-tuning, and model-reference adaptive control systems. Several process identification and parameter adjustment methods are discussed. Characteristics of the two most common types of self-tuning controllers implemented by industry (i.e., pattern recognition and process identification) are su… more
Date: April 1, 1992
Creator: Tapp, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-Cost Solar-Array Project. Quarterly progress report, April-June 1980

Description: The overall objective of the LSA Silicon Material Task is to establish a chemical process for producing silicon at a rate and price commensurate with the production goals of the LSA project for solar-cell modules. As part of the overall Silicon Material Task, Union Carbide developed the silane-silicon process and advanced the technology to the point where it has a definite potential for providing high-purity polysilicon on a commercial scale at a price of $14/kg by 1986 (1980 dollars). This wor… more
Date: January 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quality Assurance Program Plan for the radiological survey activities program --- Uranium Mill Tailings Remedial Action Project

Description: The Pollutant Assessments Group (PAG) at the Grand Junction Office (GJO), Colorado, of Oak Ridge National Laboratory (ORNL) is responsible for surveying designated sites in the vicinity of 24 inactive mill sites involved in the Department of Energy's (DOE) Uranium Mill Tailings Remedial Action Project (UMTRAP). The purpose of these surveys is to provide a recommendation to DOE whether to include or exclude these sites from UMTRAP based on whether the on-site residual radioactive material (if an… more
Date: August 1, 1991
Creator: Knott, R. R. & Little, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simultaneous analysis of uranium and nitrate

Description: A direct spectrophotometric method has been developed for the determination of 20 to 200 g/l of uranium in the presence of 3 to 5 M nitric acid. A dual-wavelength analysis is used to eliminate the enhancing effect of nitrate ion on the uranium visible spectra. The precision and accuracy of the simultaneous analysis of uranium and nitrate were compared using combinations of the four uranium wavelength maxima, occurring at 426, 416, 403 and 359 nm. Calculations based on 426 and 416 nm data yielde… more
Date: April 1, 1978
Creator: Bostick, D.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Automated calibrations and dynamic corrections for differential pressure transmitters

Description: A large reprocessing plant is a complex operation with dynamic inventories being required to provide for timely detection of attempted diversion of nuclear materials. The real-time, on-line process measurement capability controls the effectiveness of the dynamic techniques. An economical method to eliminate bias and significantly improve process differential pressure transmitter measurements is evaluated. Errors up to 1.0% have been reduced to less than 0.1%
Date: June 1, 1980
Creator: Crawford, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Instrumentation and process control development for in situ coal gasification. Fourth quarterly report, September--November 1975

Description: The instrumentation effort for Phases 2 and 3 of the Second Hanna In Situ Coal Gasification Experiment was fielded and background data obtained prior to the initiation of Phase 2 on November 25, 1975. A total of over 600 channels of instrumentation in 15 instrumentation wells and two surface arrays was fielded for the instrumentation techniques under evaluation. The feasibility of the passive acoustic technique to locate the source of process-related noises has been demonstrated; its utility is… more
Date: January 1, 1976
Creator: Northrop, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermoelectric materials evaluation program. Technical summary report

Description: Research progress on the thermoelectric materials evaluation program is reported covering the period January 1, 1976 to September 30, 1978. Topical reports are presented on (1) hot and cold end ..delta..T's, (2) hardware mobility, (3) p-leg sublimation suppression, (4) thermodynamic stability of p-legs, (5) n-leg material process improvements to reduce extraneous resistance, (6) n-leg cracking, (7) dynamic evaluation of converter, and (8) data base and degradation modes. Twenty attachments are … more
Date: April 1979
Creator: Hinderman, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Automating large-scale reactor systems

Description: This paper conveys a philosophy for developing automated large-scale control systems that behave in an integrated, intelligent, flexible manner. Methods for operating large-scale systems under varying degrees of equipment degradation are discussed, and a design approach that separates the effort into phases is suggested. 5 refs., 1 fig.
Date: January 1, 1985
Creator: Kisner, R. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A universal, fault-tolerant, non-linear analytic network for modeling and fault detection

Description: The similarities and differences of a universal network to normal neural networks are outlined. The description and application of a universal network is discussed by showing how a simple linear system is modeled by normal techniques and by universal network techniques. A full implementation of the universal network as universal process modeling software on a dedicated computer system at EBR-II is described and example results are presented. It is concluded that the universal network provides d… more
Date: March 6, 1992
Creator: Mott, J. E. (Advanced Modeling Techniques Corp., Idaho Falls, ID (United States)); King, R. W.; Monson, L. R.; Olson, D. L. & Staffon, J. D. (Argonne National Lab., Idaho Falls, ID (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Instrumentation and process control development for in situ coal gasification. Quarterly report, December 1979-March 1980

Description: The analysis of data for the Hanna IV and Hoe Creek in situ coal gasification tests raised questions concerning the fundamental controlling mechanisms of the process. The two main areas of concern are: (1) the air flow patterns; and (2) the initial cavity growth. Sandia National Laboratories is addressing these concerns by developing models of these processes. Results to date are in qualitative agreement with known phenomena. There have also been developments in data handling capability. These … more
Date: June 1, 1980
Creator: Glass, R.E. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A pilot scale demonstration of the DWPF process control and product verification strategy

Description: The Defense Waste Processing Facility (DWPF) has been designed and constructed to immobilize Savannah River Site high level liquid waste within a durable borosilicate glass matrix for permanent storage. The DWPF will be operated to produce a glass product which must meet a number of product property constraints which are dependent upon the final product composition. During actual operations, the DWPF will control the properties of the glass product by the controlled blending of the waste stream… more
Date: January 1, 1992
Creator: Hutson, N. D.; Jantzen, Carol M. & Beam, D. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development and demonstration of the use of modular thermo-mechanical pulpmill simulation models to develop energy reduction strategies

Description: The Institute of Paper Science and Technology (IPST) has received a project grant from the US DOE to develop and demonstrate the use of realtime process simulation modeling as a means of process analysis and optimization. The Project, to be conducted under the auspices of the International Energy Agency (IEA), will target a Thermo-Mechanical Pulping (TMP) operation as the site for the commercial implementation of the technology. IPST and a sub-contractor, SACDA Inc. (SACDA), will cooperate in a… more
Date: August 15, 1991
Creator: Rushton, J.D.; Jones, G.L. (Institute of Paper Science and Technology, Atlanta, GA (United States)); Leaver, E.L. & Morton, W. (SACDA, Inc. (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Demonstrations of safeguards process monitoring sensitivities. Consolidated Fuel Reprocessing Program

Description: Can process-monitoring information be incorporated into safeguards tests. What level of sensitivity to removals of materials can be achieved with process monitoring tests. These questions are being answered by a series of tests in US facilities. These tests involve full-scale facilities that simulate operating reprocessing plant conditions with natural or depleted uranium solutions as surrogate feed materials. Safeguards systems are in place to detect loss or unauthorized removals of solutions.… more
Date: September 1, 1986
Creator: Ehinger, M.H. & Wachter, J.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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