71 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Decontamination"  
Results: 1 - 24 next
open access

Feasibility Study of Passive Aerosol Sampler for Bio-Agent Detection

Description: We propose to establish the feasibility of a passive aerosol sampler for bio-agent collection through laboratory experiments and theoretical analysis. The passive sampler, unlike the typical active sampler, does not require pumps and complex fixtures, and thereby allows for large-scale field monitoring not possible with current active samplers. We plan to conduct experiments using model (both biological and non-biological) aerosols generated in an instrumented test chamber and compare the parti… more
Date: March 5, 2003
Creator: Keating, G. & Bergman, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Decommissioning of Shielded Facilities at Winfrith Used for Post Irradiation Examination of Nuclear Fuels & Other Active Items

Description: This paper describes the approaches used in the clearing, cleaning, decontamination and decommissioning of a very large suite of seven concrete shielded caves and other facilities used by UKAEA at Winfrith Technology Centre, England over a period of about 30 years for the postirradiation examination (PIE) of a wide range of nuclear fuels and other very active components. The basic construction of the facilities will first be described, setting the scene for the major challenges that 1970s' thin… more
Date: February 27, 2003
Creator: Miller, K. D.; Parkinson, S. J.; Cornell, R. M. & Staples, A. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Demonstration and Evaluation of Potential High Level Waste Melter Decontamination Technologies for Savannah River Site

Description: Four hand-held tools were tested for failed high-level waste melter decontamination and decommissioning (D&D). The forces felt by the tools during operation were measured using a tri-axial accelerometer since they will be operated by a remote manipulator. The efficiency of the tools was also recorded. Melter D&D consists of three parts: (1) glass fracturing: removing from the furnace the melted glass that can not be poured out through normal means, (2) glass cleaning: removing the thin … more
Date: February 27, 2003
Creator: Weger, Hans, Ph.D.; Kodanda, Raja Tilek Meruva; Mazumdar, Anindra; Srivastava, Rajiv Ph.D. & Ebadian, M.A. Ph.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Decommissioning the High Pressure Tritium Laboratory at Los Alamos National Laboratory

Description: In May 0f 2000, the Cerro Grande wild land fire burned approximately 48,000 acres in and around Los Alamos. In addition to the many buildings that were destroyed in the town site, many structures were also damaged and destroyed within the 43 square miles that comprise the Los Alamos National Laboratory (LANL). A special Act of Congress provided funding to remove Laboratory structures that were damaged by the fire, or that could be threatened by subsequent catastrophic wild land fires. The High … more
Date: February 27, 2003
Creator: Peifer, M. J.; Rendell, K. & Hearnsberger, D. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Disposition Paths for Rocky Flats Gloveboxes: Evaluating Options

Description: The Kaiser-Hill Company, LLC has the responsibility for closure activities at the Rocky Flats Environmental Technology Site (RFETS). One of the challenges faced for closure is the disposition of radiologically contaminated gloveboxes. Evaluation of the disposition options for gloveboxes included a detailed analysis of available treatment capabilities, disposal facilities, and lifecycle costs. The Kaiser-Hill Company, LLC followed several processes in determining how the gloveboxes would be mana… more
Date: February 27, 2003
Creator: Lobdell, D.; Geimer, R.; Larsen, P. & Loveland, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Risk Communication Within the EM Program

Description: The U.S. Department of Energy Environmental Management program (EM) conducts the most extensive environmental remediation effort in the world. The annual EM budgets have exceeded $6,000,000,000 for approximately ten years and EM has assumed responsibility for the cleanup of the largest DOE reservations (i.e., at Hanford, Washington, Aiken, South Carolina, and Idaho Falls, Idaho) as well as the facilities at Rocky Flats, Colorado and in Ohio. Each of these sites has areas of extensive radioactiv… more
Date: February 26, 2003
Creator: Edelson, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Washing of Cloth Contaminated with Radionuclides Using A Detergent-Free Laundry System

Description: In this study, we describe a new laundry system to wash clothes, including those contaminated with radionuclides, without using detergent. The main part of this system is electrolytic cell that consists of a cathode with a special coating of nickel, an anode of nickel, and a cation exchange membrane between the two electrodes. The electrolyte is supplied to the anode and the tap-water to the cathode. When an electricity of 5 volts and 25 amperes is applied to the electrodes, the processed water… more
Date: February 25, 2003
Creator: Yim, S. P.; Ahn, B. G.; Lee, H. J.; Shon, J. S.; Chung, H.; Kim, K. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thermochemical Processing of Radioactive Waste Using Powder Metal Fuels

Description: Problematic radioactive wastes were generated during various activities of both industrial facilities and research institutions usually in relative small amounts. These can be spent ion exchange resins, inorganic absorbents, wastes from research nuclear reactors, irradiated graphite, mixed, organic or chlorine-containing radioactive waste, contaminated soils, un-burnable heavily surface-contaminated materials, etc. Conventional treatment methods encounter serious problems concerning processing … more
Date: February 25, 2003
Creator: Ojovan, M. I.; Sobolev, I. A.; Dmitriev, S. A.; Panteleev, V. I.; Karlina, O. K. & Klimov, V. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Removal of Dioxin Contamination for Gas Turbine Generator Set Repair

Description: Decontamination projects are typically undertaken in the interest of reducing disposal costs. This goal can be achieved because decontamination concentrates the contaminant into a smaller volume or changes its form so that a lower cost disposal technology becomes available. Less frequently, decontamination adds value back to the fouled structure or contaminated piece of equipment. This removal of dioxins from a gas turbine generator set is one of the latter cases. A multi-million dollar piece o… more
Date: February 25, 2003
Creator: Fay, W. Scott & Borah, Ronald E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Glovebox Dismantlement and Equipment Protection in Contaminated Environments

Description: It has been revealed from the experiences of Decontamination and Decommissioning (D&D) activities that even a small improvement in performance can result in significant risk reduction and cost savings. For example, Race Scan Ear Mic System, which was originally developed for communications between racecar drivers and crews in loud environments, has been successfully applied to D&D work and proved to enhance worker safety and communications. Glovebox dismantlement is an important and cos… more
Date: February 27, 2003
Creator: Kitamura, Akihiro; Stallings, Ellen & Wilburn, Dianne W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Decontamination and Characterization Challenges of Legacy Material

Description: The legacy project at Lovelace Respiratory Research Institute (LRRI) was an opportunity to work with decades worth of research. LRRI was founded in 1963 to provide inhalation research using radioactive nuclides. Over the next 35 years, scientists at the institute researched the effects of radioactivity on the lungs and the effects of inhaled radiation on the body. There were two outcomes of the research. First, the studies provided valuable information regarding radiation safety and the prevent… more
Date: February 26, 2003
Creator: Baker, D. IV, Rohrer, S. & Brown, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thorough Chemical Decontamination with the MEDOC Process : Batch Treatment of Dismantled Pieces or Loop Treatment of Large Components Such as the BR3 Steam Generator and Pressurizer

Description: The dismantling of the BR3-PWR reactor leads to the production of large masses of contaminated metallic pieces, including structural materials, primary pipings, tanks and heat exchangers. One of our main objectives is to demonstrate that we can minimize the volume of radioactive waste in an economical way, by the use of alternative waste routes, such as the clearance of materials after thorough decontamination. The SCKoCEN uses its own developed chemical decontamination process, so-called MEDOC… more
Date: February 25, 2003
Creator: Ponnet, M.; Klein, M.; Massaut, V.; Davain, H. & Aleton, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The EPRI DFDX Chemical Decontamination Process

Description: Decommissioning of retired nuclear plants and components demands the proper management of the process, both for economic reasons and for retaining public confidence in the continued use of nuclear power for electricity generation. The cost and ease of management of radioactively contaminated components can be greatly assisted by the application of decontamination technology. EPRI initiated a program of research and development work in collaboration with Bradtec, which has led to the ''EPRI DFD'… more
Date: February 25, 2003
Creator: Bushart, S.; Wood, C. J.; Bradbury, D. & Elder, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Biodegradable Isosaccharinate-Containing Foams for Decontamination of Actinides: Thermodynamic and Kinetic Reactions Between Isosaccharinate and Actinides on Metal and Concrete Surfaces

Description: Actinide contamination of steel and concrete surfaces is a major problem within the DOE complex. Almost all current decontamination technologies rely on removal of the contaminated surface layer by mechanical means or by chemical methods, using harsh chemicals. Some of the technologies are ineffective. Others are expensive, labor intensive, and hazardous to workers. Still others create secondary mixed wastes that are not environmentally acceptable. This project seeks fundamental information tha… more
Date: June 1, 2003
Creator: Rai, Dhanpat; Moore, Robert C.; Linfeng, Rao & Tucker, Mark D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remote System Technologies for Deactivating Hanford Hot Cells

Description: Remote system technologies are being deployed by Fluor Hanford to help accelerate the deactivation of highly-radioactive hot cell facilities. These technologies offer improved methods for accessing difficult-to-reach spaces and performing tasks such as visual inspection, radiological characterization, decontamination, waste handling, and size reduction. This paper is focused on the application of remote systems in support of deactivation work being performed in several legacy facilities at Hanf… more
Date: February 25, 2003
Creator: Berlin, G. & Walton, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Finding Solutions at the West Valley Demonstration Project

Description: The United States Department of Energy Office of Environmental Management (DOE-EM) faces a number of sizeable challenges as it begins to transform its mission from managing risk to reducing and eliminating risk throughout the DOE Complex. One of the greatest challenges being addressed by DOE-EM as this transformation takes place is accelerating the deactivation and decommissioning of thousands of facilities within the DOE Complex that were once used to support nuclear-related programs and proje… more
Date: February 27, 2003
Creator: Drake, John L.; Gramling, James M. & Houston, Helene M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Surface Decontamination of System Components in Uranium Conversion Plant at KAERI

Description: A chemical decontamination process using nitric acid solution was selected as in-situ technology for recycle or release with authorization of a large amount of metallic waste including process system components such as tanks, piping, etc., which is generated by dismantling a retired uranium conversion plant at Korea Atomic Energy Research Institute (KAERI). The applicability of nitric acid solution for surface decontamination of metallic wastes contaminated with uranium compounds was evaluated … more
Date: February 25, 2003
Creator: Choi, W. K.; Kim, K. N.; Won, H. J.; Jung, C. H. & Oh, W. Z.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Rancho Seco--Decommissioning Update

Description: The Rancho Seco Nuclear Generating Station ceased operation in June of 1989 and entered an extended period of SAFSTOR to allow funds to accumulate for dismantlement. Incremental dismantlement was begun in 1997 of steam systems and based on the successful completion of work, the Sacramento Municipal Utility District (SMUD) board of directors approved full decommissioning in July 1999. A schedule has been developed for completion of decommissioning by 2008, allowing decommissioning funds to accum… more
Date: February 26, 2003
Creator: Newey, J. M.; Ronningen, E. T. & Snyder, M. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Korea Research Reactor -1 & 2 Decommissioning Project in Korea

Description: Korea Research Reactor 1 (KRR-1), the first research reactor in Korea, has been operated since 1962, and the second one, Korea Research Reactor 2 (KRR-2) since 1972. The operation of both of them was phased out in 1995 due to their lifetime and operation of the new and more powerful research reactor, HANARO (High-flux Advanced Neutron Application Reactor; 30MW). Both are TRIGA Pool type reactors in which the cores are small self-contained units sitting in tanks filled with cooling water. The KR… more
Date: February 24, 2003
Creator: Park, S. K.; Chung, U. S.; Jung, K. J. & Park, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Remote Manipulation for D&D Exhibiting Teleautonomy and Telecollaboration

Description: The purpose of the work is to enhance remote operations of robotic systems for D&D tasks by extending teleoperation with semi-autonomous functions. The work leverages the $1.2M dual-arm work platform (DAWP) developed with broad participation for the CP5 D&D, as well as 2,000 hr DAWP D&D operational experience. We propose to develop a reactive, agent-based control architecture well suited to unstructured and unpredictable environments, and cobot control technology, which implements a virtual fix… more
Date: June 2003
Creator: Park, Young S.; Colgate, J. Edward; Ewing, Thomas F.; Kang, Hyoisig & Peshkin, Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cost Savings through Innovation in Decontamination, Decommissioning, and Dismantlement

Description: The United States Department of Energy (DOE) continually seeks safer and more cost effective technologies for the decontamination and decommissioning (D&D) of nuclear facilities. The Deactivation and Decommissioning Focus Area (DDFA) of the DOE's Office of Science and Technology (OST) sponsored large-scale demonstration and deployment projects (LSDDPs) to help bring new technologies into the D&D programs. The Idaho National Engineering and Environmental Laboratory (INEEL) LSDDP generate… more
Date: February 27, 2003
Creator: Yancey, Neal A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A DECONTAMINATION PROCESS FOR METAL SCRAPS FROM THE DECOMMISSIONING OF TRR

Description: A decontamination facility including surface condition categorizing, blasting, chemical/electrochemical cleaning, very low radioactivity measuring, and melting, is being established at INER. The facility will go into operation by the end of 2004. The main purpose is to clean the dismantled metal wastes from the decommissioning of Taiwan Research Reactor (TRR). The pilot test shows that over 70% of low level metal waste can be decontaminated to very low activity and can be categorized as BRC (be… more
Date: February 27, 2003
Creator: Wei, T.Y.; Gan, J.S.; Lin, K.M. & Chung, Z.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Atmospheric-Pressure Plasma Cleaning of Contaminated Surfaces

Description: The objective of this work is to demonstrate a practical, atmospheric pressure plasma tool for the surface decontamination of radioactive waste. Decontamination of radioactive materials that have accumulated on the surfaces of equipment and structures is a challenging and costly undertaking for the US Department of Energy. Our technology shows great potential for accelerating this clean up effort.
Date: June 1, 2003
Creator: Hicks, Robert F. & Herrmann, Hans W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen