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Characterization of Vadose Zone Sediment: Uncontaminated RCRA Borehole Core Samples and Composite Samples

Description: The overall goal of the of the Tank Farm Vadose Zone Project, led by CH2M HILL Hanford Group, Inc., is to define risks from past and future single-shell tank farm activities. To meet this goal, CH2M HILL Hanford Group, Inc. asked scientists from Pacific Northwest National Laboratory to perform detailed analyses on vadose zone sediment from within the S-SX Waste Management Area. This report is the first in a series of four reports to present the results of these analyses. Specifically, this repo… more
Date: February 12, 2002
Creator: Serne, R. Jeffrey; Bjornstad, Bruce N.; Schaef, Herbert T.; Williams, Bruce A.; Lanigan, David C.; Horton, Duane G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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RCRA Groundwater Monitoring Plan for Single-Shell Tank Waste Management Area A-AX at the Hanford Site, Interim Change Notice 1

Description: This ICN updates the plan to document improved understanding of the local flow direction, redefine upgradient versus downgradient monitoring well, update sampling and analysis schedule, and to update critical mean parameters.
Date: November 28, 2002
Creator: Narbutovskih, Susan M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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RCRA Groundwater Monitoring Plan for Single-Shell Tank Waste Management Area C at the Hanford Site, Interim Change Notice 1

Description: This ICN documents an improved understanding of local groundwater flow, defines upgradient versus downgradient monitoring wells, provides updated critical means for indicator parameters, and updates the sampling and analysis schedule.
Date: November 28, 2002
Creator: Narbutovskih, Susan M. (BATTELLE (PACIFIC NW LAB))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Optimal Elevation and Configuration of Hanford's Double-Shell Tank Waste Mixer Pumps

Description: The objective of this study was to compare the mixing performance of the Lawrence pump, which has injection nozzles at the top, with an alternative pump that has injection nozzles at the bottom, and to determine the optimal elevation for the alternative pump. Sixteen cases were evaluated: two sludge thicknesses at eight levels. A two-step evaluation approach was used: Step 1 to evaluate all 16 cases with the non-rotating mixer pump model and Step 2 to further evaluate four of those cases with t… more
Date: May 15, 2002
Creator: Onishi, Yasuo; Yokuda, Satoru T. & Majumder, Catherine A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report West Valley High-Level Waste Tank Lay-Up

Description: This report documents completion of Milestone A.4-1 "Issue Tank Lay-Up Strategies for WVDP Final Report," in Technical Task Plan RL3-WT21A, "Post-Retrieval and Pre-Closure HLW Tank Lay-Up." This task was a collaborative effort among Pacific Northwest National Laboratory, Jacobs Engineering Group Inc., and West Valley Nuclear Services. The primary objective of the overall task was to develop and evaluate conceptual strategies for preclosure lay-up of the two large high-level waste storage tanks … more
Date: June 21, 2002
Creator: Elmore, Monte R. & Henderson, Colin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Globally Waste-Disturbing Activities on Gas Generation, Retention, and Release in Hanford Waste Tanks

Description: Various operations are authorized in Hanford single- and double-shell tanks that disturb all or a large fraction of the waste. These globally waste-disturbing activities have the potential to release a large fraction of the retained flammable gas and to affect future gas generation, retention, and release behavior. This report presents analyses of the expected flammable gas release mechanisms and the potential release rates and volumes resulting from these activities. The background of the flam… more
Date: December 18, 2002
Creator: Stewart, Charles W.; Huckaby, James L. & Meyer, Perry A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM

Description: In Phase IIA of this project, CeraMem has further developed and scaled up ceramic HEPA filters that are appropriate for use on filtration of vent gas from HLW tanks at DOE sites around the country. This work included procuring recrystallized SiC monoliths, developing membrane and cement materials, and defining a manufacturing process for the production of prototype full sizes HEPA filters. CeraMem has demonstrated that prototype full size filters can be manufactured by producing 9 full size fil… more
Date: August 16, 2002
Creator: Bishop, Bruce; Goldsmith, Robert; Nielsen, Karsten & Paquette, Phillip
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanics of Bubbles in Sludges and Slurries Modeling Studies of Particulate Materials

Description: The Hanford Site has 177 underground waste storage tanks that are known to retain and release bubbles composed of flammable gases. Characterizing and understanding the behavior of these bubbles is important for the safety issues associated with the flammable gases for both ongoing waste storage and future waste-retrieval operations. The retained bubbles are known to respond to small barometric pressure changes, though in a complex manner with unusual hysteresis occurring in some tanks in the re… more
Date: January 7, 2002
Creator: Gauglitz, Phillip A.; Terrones, Guillermo; Muller, Susan J.; Denn, Morton M. & Rossen, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Rapid Migration of Radionuclides Leaked from High-Level Water Tanks; A Study of Salinity Gradients, Wetted Path Geometry and Water Vapor Transport

Description: The basis of this study was the hypothesis that the physical and chemical properties of hypersaline tank waste could lead to wetting from instability and fingered flow following a tank leak. Thus, the goal of this project was to develop an understanding of the impacts of the properties of hypersaline fluids on transport through the unsaturated zone beneath Hanford's Tank Farms. There were three specific objectives (i) to develop an improved conceptualization of hypersaline fluid transport in la… more
Date: April 24, 2002
Creator: Ward, Anderson l.; Gee, Glendon W.; Selker, John S. & Cooper, Clay
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiological risk assessment for the remote-handled transuranic waste storage options at Argonne National Laboratory - East.

Description: Interim storage of the remote-handled transuranic (RH/TRU) waste is needed at Argonne National Laboratory-East (ANL-E). Two on-site facilities, the northwest (NW) vaults in the 317 Area and the converted spent nuclear fuel pool in Building 331, were identified as potential storage locations through previous studies. To assist the decision making process of selecting a storage location, radiological risk assessments were conducted to analyze potential radiation exposures that would be associated… more
Date: February 15, 2002
Creator: Cheng, J. J.; Avci, H.; Hecker, D.; Bray, W.; Bray, T. & Grandy, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Performance Analysis for Mixing Pumps in Tank 18

Description: In support of sludge suspension and mixing operations in Tank 18, flow evolution models were developed and performance calculations completed for the advanced design mixer pump (ADMP) and the modified ADMP (MADMP). The MADMP was being considered as a replacement for the ADMP in Tank 18. The models and calculations were based on prototypic tank geometry and expected normal operating conditions as defined by Waste Removal Closure (WRC) Engineering. Computational fluid dynamics models of both the … more
Date: April 16, 2002
Creator: Lee, Si Young
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Correlation of Chemisorption and Electronic Effects for Metal Oxide Interfaces: Transducing Principles for Temperature Programmed Gas Microsensors

Description: The spectrum of chemical monitoring problems faced by the Department of Energy at its hazardous waste sites is formidable. It is likely that a variety of existing types of instrumentation will be applied in the years ahead, with varying degrees of practicality and success. A tremendous impact could be realized, however, if instrumental methods could be supplemented by a low-cost, reliable sensing technology for continuous monitoring of a range of species, including, for example, volatile organi… more
Date: January 3, 2002
Creator: Semancik, Dr. Steve
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Three-Dimensional CFD FLYGT Mixer Model and Results

Description: The main objectives of the present work are to examine detailed flow performance of the Tank 19 FLYGT mixer improved by the previous work, to conduct sensitivity analysis for a wide range of possible boundary conditions, and to investigate transient flow behavior and loading of the FLYGT mixer. For the present study, a flow simulation method is developed to calculate the flow around a marine-type propeller configuration of the FLYGT mixer.
Date: April 16, 2002
Creator: Lee, S. Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Rapid Migration of Radionuclides Leaked from High-Level Water Tanks: A Study of Salinity Gradients, Wetted Path Geometry and Water Vapor Transport

Description: The basis of this study was the hypothesis that the physical and chemical properties of hypersaline tank waste could lead to wetting from instability and fingered flow following a tank leak. Thus, the goal of this project was to develop an understanding of the impacts of the properties of hypersaline fluids on transport through the unsaturated zone beneath Hanford's Tank Farms. There were three specific objectives (i) to develop an improved conceptualization of hypersaline fluid transport in la… more
Date: April 24, 2002
Creator: Ward, Anderson L.; Gee, Glendon W.; Selker, John S. & Cooper, Caly
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Test Plan to Update SRS High Level Waste Tank Material Properties Database by Determining Synergistic Effects of Dynamic Strain Aging and Stress Corrosion Cracking

Description: The structural integrity of High Level Waste tanks is defined by the demonstrated confinement of the waste by the tank structure under design basis conditions. a comprehensive test plan is presented here to develop a mechanical and corrosion properties database to develop a fundamental understanding of the synergistic effects of DSA and SCC due to high temperature service of the HLW tanks.
Date: March 20, 2002
Creator: Subramanian, K.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tank Remote Repair System Conceptual Design

Description: This document describes two conceptual designs for a Tank Remote Repair System to perform leak site repairs of double shell waste tank walls (Types I, II, III, and IIIA) from the annulus space. The first concept uses a magnetic wall crawler and an epoxy patch system and the second concept uses a magnetic wall crawler and a magnetic patch system. The recommended concept uses the magnetic patch system, since it is simpler to deliver, easier to apply, and has a higher probability of stopping an ac… more
Date: December 6, 2002
Creator: Kriikku, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Statistical Analyses of AY-101 Ultrasonic Measurements of Wall Thickness

Description: Tank AY-101 wall thicknesses have been measured using ultrasonic (UT) images. Interest is in using the available data to estimate a worst-case minimum wall thickness for regions of the tank that remain unexamined with the UT approach. Each UT image can provide the wall thickness at a very large number of pixels, but only the minimum value for each image is used in this work. Since the data arise in this manner, one of several candidate statistical extreme value distributions should successfully… more
Date: October 31, 2002
Creator: Weier, Dennis R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultrasonic Examination of Double-Shell Tank 241-AN-105 Examination Completed September 2002

Description: COGEMA Engineering Corporation (COGEMA), under a contract from CH2M Hill Hanford Group (CH2M Hill), has performed an ultrasonic examination of selected portions of Double-Shell Tank 241-AN-105. The purpose of this examination was to provide information that could be used to evaluate the integrity of the wall of the primary tank. The requirements for the ultrasonic examination of Tank 241-AN-105 were to detect, characterize (identify, size, and locate), and record measurements made of any wall t… more
Date: December 31, 2002
Creator: Pardini, Allan F. & Posakony, Gerald J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of Tank Lay-Up Status at US Department of Energy Radioactive Waste Tank Sites

Description: During fiscal year (FY) 2001 as part of a Tanks Focus Area strategic intiative, tank lay-up options were developed and evaluated for the two high-level waste (HLW) storage tanks at the West Valley Demonstration Project. As follow-on task, a list of key waste tank contacts throughout the US Department of Energy complex was developed. Visits were then made to the primary DOE sites with radioactive waste storage tanks to discuss the concept and applicablility of tank lay-up. This report documents … more
Date: June 21, 2002
Creator: Elmore, Monte R. & Henderson, Colin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Decision Plan for West Valley High-Level Waste Tank Lay-Up

Description: Documents completion of Milestone A.3-1, "Issue Decision Plan for WVDP Tank Lay-Up," in Technical Task Plan RL30WT21A, "Post-Retrieval and Pre-Closure HLW Tank Lay-Up." This task is a collaborative effort among, Pacific Northwest National Laboratory, Jacobs Engineering Group Inc., and West Valley Nuclear Services. Thi primary objective of the overall task is to develop and evaluate conceptual strategies for preclosure lay-up of the two large high-level waste storage tanks at the West Valley Dem… more
Date: June 21, 2002
Creator: Elmore, Monte R. & Henderson, Colin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ALARA Analysis of Radiological Control Criteria Associated with Alternatives for Disposal of Hazardous Wastes

Description: This ALARA analysis of Radiological Control Criteria (RCC) considers alternatives to continued storage of certain DOE mixed wastes. It also considers the option of treating hazardous wastes generated by DOE facilities, which have a very low concentration of radionuclide contaminants, as purely hazardous waste. Alternative allowable contaminant levels examined correspond to doses to an individual ranging from 0.01 mrem/yr to 10 to 20 mrem/yr. Generic waste inventory data and radionuclide source … more
Date: May 15, 2002
Creator: Aaberg, Rosanne L.; Bilyard, Gordon R.; Branch, Kristi M.; Lavender, Jay C. & Miller, Peter L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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