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Ax Tank Farm Waste Inventory Study For The Hanford Tanks Initiative Hti Project
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Book Synopsis AX Tank Farm Waste Inventory Study for the Hanford Tanks Initiative (HTI) Project by :
Download or read book AX Tank Farm Waste Inventory Study for the Hanford Tanks Initiative (HTI) Project written by and published by . This book was released on 1997 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: In May of 1996, the US Department of Energy implemented a four-year demonstration project identified as the Hanford Tanks Initiative (HTI). The HTI mission is to minimize technical uncertainties and programmatic risks by conducting demonstrations to characterize and remove tank waste using technologies and methods that will be needed in the future to carry out tank waste remediation and tank farm closure at the Hanford Site. Included in the HTI scope is the development of retrieval performance evaluation criteria supporting readiness to close single-shell tanks in the future. A path forward that includes evaluation of closure basis alternatives has been outlined to support the development of retrieval performance evaluation criteria for the AX Farm, and eventual preparation of the SEIS for AX Farm closure. This report documents the results of the Task 4, Waste Inventory study performed to establish the best-basis inventory of waste contaminants for the AX Farm, provides a means of estimating future soil inventories, and provides data for estimating the nature and extent of contamination (radionuclide and chemical) resulting from residual tank waste subsequent to retrieval. Included in the report are a best-basis estimate of the existing radionuclide and chemical inventory in the AX Farm Tanks, an estimate of the nature and extent of existing radiological and chemical contamination from past leaks, a best-basis estimate of the radionuclide and chemical inventory in the AX Farm Tanks after retrieval of 90 percent, 99 percent, and 99.9 percent of the waste, and an estimate of the nature and extent of radionuclide and chemical contamination resulting from retrieval of waste for an assumed leakage from the tanks during retrieval.
Book Synopsis AX Tank Farm Tank Removal Study by :
Download or read book AX Tank Farm Tank Removal Study written by and published by . This book was released on 1998 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the feasibility of exposing, demolishing, and removing underground storage tanks from the 241-AX Tank Farm at the Hanford Site. For the study, it was assumed that the tanks would each contain 360 ft3 of residual waste (corresponding to the one percent residual Inventory target cited in the Tri-Party Agreement) at the time of demolition. The 241-AX Tank Farm is being employed as a ''strawman'' in engineering studies evaluating clean and landfill closure options for Hanford single-shell tank farms. The report is one of several reports being prepared for use by the Hanford Tanks Initiative Project to explore potential closure options and to develop retrieval performance evaluation criteria for tank farms.
Book Synopsis AX Tank Farm Process Impacts Study by :
Download or read book AX Tank Farm Process Impacts Study written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study provides facility and process concepts and costs for partial decontamination of the most heavily contaminated debris from the demolition of the four AX tanks and ancillary equipment items. This debris would likely be classified as high-level and/or remote handle TRU waste based on source and radiological inventory. A process flow sheet was developed to treat contaminated metal wastes such as pipes and tank liners as well as contaminated concrete and the residual waste and grout left in the tanks after final waste retrieval. The treated solid waste is prepared for delivery to either the ERDF or the Low-Level waste burial grounds. Liquid waste products are delivered to the private vitrification contractor for further treatment and storage. This is one of several reports prepared for use by the Hanford Tanks Initiative Project to develop retrieval performance criteria for tank farms.
Book Synopsis Engineering Task Plan for AX-104 Residual Waste Volume and Inventory Data Collection by :
Download or read book Engineering Task Plan for AX-104 Residual Waste Volume and Inventory Data Collection written by and published by . This book was released on 1997 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this Engineering Task Plan is to document the strategy, equipment and responsibilities of the tasks required to preform the volume and inventory data collection of tank AX-104. The project is a part of the Hanford Tanks Initiative Plan document number WHC-SD-WM-PMP-022 Revision D.
Book Synopsis Stabilization of In-tank Residual Wastes and External-tank Soil Contamination for the Tank Focus Area, Hanford Tank Initiative by :
Download or read book Stabilization of In-tank Residual Wastes and External-tank Soil Contamination for the Tank Focus Area, Hanford Tank Initiative written by and published by . This book was released on 1997 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report investigates five technical areas for stabilization of decommissioned waste tanks and contaminated soils at the Hanford Site AX Farm. The investigations are part of a preliminary evacuation of end-state options for closure of the AX Tanks. The five technical areas investigated are: (1) emplacement of cementations grouts and/or other materials; (2) injection of chemicals into contaminated soils surrounding tanks (soil mixing); (3) emplacement of grout barriers under and around the tanks; (4) the explicit recognition that natural attenuation processes do occur; and (5) combined geochemical and hydrological modeling. Research topics are identified in support of key areas of technical uncertainty, in each of the five areas. Detailed cost-benefit analyses of the technologies are not provided. This investigation was conducted by Sandia National Laboratories, Albuquerque, New Mexico, during FY 1997 by tank Focus Area (EM-50) funding.
Book Synopsis Statistical Techniques for Characterizing Residual Waste in Single-shell and Double-shell Tanks by :
Download or read book Statistical Techniques for Characterizing Residual Waste in Single-shell and Double-shell Tanks written by and published by . This book was released on 1997 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: A primary objective of the Hanford Tank Initiative (HTI) project is to develop methods to estimate the inventory of residual waste in single-shell and double-shell tanks. A second objective is to develop methods to determine the boundaries of waste that may be in the waste plume in the vadose zone. This document presents statistical sampling plans that can be used to estimate the inventory of analytes within the residual waste within a tank. Sampling plans for estimating the inventory of analytes within the waste plume in the vadose zone are also presented. Inventory estimates can be used to classify the residual waste with respect to chemical and radiological hazards. Based on these estimates, it will be possible to make decisions regarding the final disposition of the residual waste. Four sampling plans for the residual waste in a tank are presented. The first plan is based on the assumption that, based on some physical characteristic, the residual waste can be divided into disjoint strata, and waste samples obtained from randomly selected locations within each stratum. The second plan is that waste samples are obtained from randomly selected locations within the waste. The third and fourth plans are similar to the first two, except that composite samples are formed from multiple samples. Common to the four plans is that, in the laboratory, replicate analytical measurements are obtained from homogenized waste samples. The statistical sampling plans for the residual waste are similar to the statistical sampling plans developed for the tank waste characterization program. In that program, the statistical sampling plans required multiple core samples of waste, and replicate analytical measurements from homogenized core segments. A statistical analysis of the analytical data, obtained from use of the statistical sampling plans developed for the characterization program or from the HTI project, provide estimates of mean analyte concentrations and confidence intervals on the mean. In addition, the statistical analysis provides estimates of spatial and measurement variabilities. The magnitude of these sources of variability are used to determine how well the inventory of the analytes in the waste have been estimated. This document provides statistical sampling plans that can be used to estimate the inventory of the analytes in the residual waste in single-shell and double-shell tanks and in the waste plume in the vadose zone.
Book Synopsis Stabilization of In-Tank Residual Wastes and External-Tank Soil Contamination for the Hanford Tank Closure Program by :
Download or read book Stabilization of In-Tank Residual Wastes and External-Tank Soil Contamination for the Hanford Tank Closure Program written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical support for the Hanford Tank Closure Program focused on evaluation of concepts for immobilization of residual contaminants in the Hanford AX tanks and underlying soils, and identification of cost-effective approaches to improve long-term performance of AX tank farm cIosure systems. Project objectives are to develop materials or engineered systems that would significantly reduce the radionuclide transport to the groundwater from AX tanks containing residual waste. We pursued several studies that, if implemented, would help achieve these goals. They include: (1) tank fill design to reduce water inilltration and potential interaction with residual waste; (2) development of in-tank getter materials that would specifically sorb or sequester radionuclides; (3) evaluation of grout emplacement under and around the tanks to prevent waste leakage during waste retrieval or to minimize water infiltration beneath the tanks; (4) development of getters that will chemically fix specific radionuclides in soils under tanks; and (5) geochemical and hydrologic modeling of waste-water-soil-grout interactions. These studies differ in scope from the reducing grout tank fill employed at the Savannah River Site in that our strategy improves upon tank fill design by providing redundancy in the barriers to radionuclide migration and by modification the hydrogeochemistry external to the tanks.
Book Synopsis AX Tank Farm Waste Retrieval Alternatives Cost Estimates by :
Download or read book AX Tank Farm Waste Retrieval Alternatives Cost Estimates written by and published by . This book was released on 1998 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the estimated costs associated with retrieval of the wastes from the four tanks in AX Tank Farm. The engineering cost estimates developed for this report are based on previous cost data prepared for Project W-320 and the HTI 241-C-106 Heel Retrieval System. The costs presented in this report address only the retrieval of the wastes from the four AX Farm tanks. This includes costs for equipment procurement, fabrication, installation, and operation to retrieve the wastes. The costs to modify the existing plant equipment and systems to support the retrieval equipment are also included. The estimates do not include operational costs associated with pumping the waste out of the waste receiver tank (241-AY-102) between AX Farm retrieval campaigns or transportation, processing, and disposal of the retrieved waste.
Book Synopsis Hanford Tanks Initiative (HTI) Configuration Management Desk Instruction by :
Download or read book Hanford Tanks Initiative (HTI) Configuration Management Desk Instruction written by and published by . This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the document is to provide working level directions for submitting requirements, making changes to the requirements database, and entering Project documentation into the HTI Project information and document management system.
Book Synopsis Stabilization of In-tank Residual Wastes and External Tank Soil Contamination for the Hanford Tank Closure Program by :
Download or read book Stabilization of In-tank Residual Wastes and External Tank Soil Contamination for the Hanford Tank Closure Program written by and published by . This book was released on 1998 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed high-level waste is currently stored in underground tanks at the US Department of Energy's (DOE's) Hanford Site. The plan is to retrieve the waste, process the water, and dispose of the waste in a manner that will provide less long-term health risk. The AX Tank Farm has been identified for purposes of demonstration. Not all the waste can be retrieved from the tanks and some waste has leaked from these tanks into the underlying soil. Retrieval of this waste could result in additional leakage. During FY1998, the Sandia National Laboratory was under contract to evaluate concepts for immobilizing the residual waste remaining in tanks and mitigating the migration of contaminants that exist in the soil column. Specifically, the scope of this evaluation included: development of a layered tank fill design for reducing water infiltration; development of in-tank getter technology; mitigation of soil contamination through grouting; sequestering of specific radionuclides in soil; and geochemical and hydrologic modeling of waste-water-soil interactions. A copy of the final report prepared by Sandia National Laboratory is attached.
Book Synopsis Supporting Document for the Historical Tank Content Estimate for AX-tank Farm by :
Download or read book Supporting Document for the Historical Tank Content Estimate for AX-tank Farm written by and published by . This book was released on 1996 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Supporting Document provides historical in-depth characterization information on AX-Tank Farm, such as historical waste transfer and level data, tank physical information, temperature plots, liquid observation well plots, chemical analyte and radionuclide inventories for the Historical Tank Content Estimate Report for the northeast quadrant of the Hanford 200 East Area.
Book Synopsis Rethinking the Hanford Tank Waste Program by :
Download or read book Rethinking the Hanford Tank Waste Program written by and published by . This book was released on 2002 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The program to treat and dispose of the highly radioactive wastes stored in underground tanks at the U.S. Department of Energy's Hanford site has been studied. A strategy/management approach to achieve an acceptable (technically sound) end state for these wastes has been developed in this study. This approach is based on assessment of the actual risks and costs to the public, workers, and the environment associated with the wastes and storage tanks. Close attention should be given to the technical merits of available waste treatment and stabilization methodologies, and application of realistic risk reduction goals and methodologies to establish appropriate tank farm cleanup milestones. Increased research and development to reduce the mass of non-radioactive materials in the tanks requiring sophisticated treatment is highly desirable. The actual cleanup activities and milestones, while maintaining acceptable safety standards, could be more focused on a risk-to-benefit cost effectiveness, as agreed to by the involved stakeholders and in accordance with existing regulatory requirements. If existing safety standards can be maintained at significant cost savings under alternative plans but with a change in the Tri-Party Agreement (a regulatory requirement), those plans should be carried out. The proposed strategy would also take advantage of the lessons learned from the activities and efforts in the first phase of the two-phased cleanup of the Hanford waste tank farms.
Book Synopsis Hanford A and AX-Farm Leak Assessments Report by :
Download or read book Hanford A and AX-Farm Leak Assessments Report written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes information on historical waste loss events associated with tanks and piplines in the 241-A and 241-AX tank farms.
Book Synopsis Work Plan for Defining a Standard Inventory Estimate for Wastes Stored in Hanford Site Underground Tanks by :
Download or read book Work Plan for Defining a Standard Inventory Estimate for Wastes Stored in Hanford Site Underground Tanks written by and published by . This book was released on 1996 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work plan addresses the Standard Inventory task scope, deliverables, budget, and schedule for fiscal year 1997. The goal of the Standard Inventory task is to resolve differences among the many reported Hanford Site tank waste inventory values and to provide inventory estimates that will serve as Standard Inventory values for all waste management and disposal activities. These best-basis estimates of chemicals and radionuclides will be reported on both a global and tank-specific basis and will be published in the Tank Characterization Database.
Book Synopsis Best Basis Inventory Template Compositions of Common Tank Waste Layers by :
Download or read book Best Basis Inventory Template Compositions of Common Tank Waste Layers written by and published by . This book was released on 2001 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemical processing of irradiated reactor fuel generated large amounts of waste that required storage and disposal. Most of this waste now exists as either a metal oxy-hydroxide sludge or as a saltcake consisting primarily of nitrate, nitrite, phosphate, carbonate, and sulfate salts of sodium. The waste is stored in 177 underground tanks. For various reasons, waste streams from the processing facilities were segregated within the tanks. This practice resulted in the layering or sludges and saltcake. Each process generated unique layer compositions. Knowledge of the composition of these layers and their location from tank farm records can be used to estimate tank waste inventories for tanks where sampling data is not available. The purpose of this study is to develop waste type templates for use in estimating tank waste inventories for tanks that have not been sampled, or when sample data for a tank is incomplete. Waste type templates are also used as a reference in confirming or rejecting the process history of a waste tank by comparing the tank sample data to waste type template compositions. The Best-Basis Inventory (BBI) uses both solid waste type templates and liquid waste type templates to establish the contents of tanks which have not been sampled or tanks for which sampling is incomplete. The waste type templates were created from sample data, process knowledge, and Hanford Defined Waste (HDW) model estimates. The original waste type template compositions were developed in 1996 and were limited to analytes for which sample data existed (primarily the waste chemicals). These templates only addressed solid wastes (sludges and saltcakes). During subsequent annual updates of the BBI, these compositions were found to be deficient for a variety of reasons. This report documents the derivation of updated waste type templates from tank sample data and HDW model data. Both solid waste type templates and liquid waste type templates have been developed. Solid waste type templates are based on sample data supplemented with HDW model data. The solid waste type templates are considered to be indicative of waste layers drained of free flowing liquid. Liquid waste type templates are primarily based on HDW model predictions because adequate liquid sample data were not available. This report documents how the waste type templates were developed from sample and HDW model data. Discussion of the sample data used in constructing the solid waste type templates constitutes the majority of this report.
Book Synopsis Hanford Tank Cleanup by : R. E. Gephart
Download or read book Hanford Tank Cleanup written by R. E. Gephart and published by . This book was released on 1998 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hanford Tank Cleanup is a first-of-its-kind report written about the most unique industrial waste ever created by modern industrial society. This waste, some 54 million gallons of radioactive and chemical residue now resting inside 177 underground storage tanks at the U.S. Department of Energy's Hanford Site in Washington State, is part of the nation's 90 million gallon inventory of highly radioactive waste.
Book Synopsis HTI Retrieval Demonstration Project Execution Plan by :
Download or read book HTI Retrieval Demonstration Project Execution Plan written by and published by . This book was released on 1997 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This plan describes the process for demonstrating the retrieval of difficult Hanford tank waste forms utilizing commercial technologies and the private sector to conduct the operations. The demonstration is to be conducted in Tank 241-C-106.
