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EVALUATING MC AND A EFFECTIVENESS TO VERIFY THE PRESENCE OF NUCLEAR MATERIALS

Description: Traditional materials accounting is focused exclusively on the material balance area (MBA), and involves periodically closing a material balance based on accountability measurements conducted during a physical inventory. In contrast, the physical inventory for Los Alamos National Laboratory's near-real-time accounting system is established around processes and looks more like an item inventory. That is, the intent is not to measure material for accounting purposes, since materials have already … more
Date: June 1, 2001
Creator: DAWSON, P. G.; MORZINSKI, J. A & AL, ET
Partner: UNT Libraries Government Documents Department
open access

Evaluating MC&A effectiveness to verify the presence of nuclear materials

Description: Traditional materials accounting is focused exclusively on the material balance area (MBA), and involves periodically closing a material balance based on accountability measurements conducted during a physical inventory. In contrast, the physical inventory for Los Alamos National Laboratory's near-real-time accounting system is established around processes and looks more like an item inventory. That is, the intent is not to measure material for accounting purposes, since materials have already … more
Date: June 1, 2001
Creator: Dawson, P. G. (Pamela G.); Morzinski, J. A. (Jerome A.); Ostenak, Carl A.; Longmire, V. L. (Victoria L.); Jewell, D. (Don) & Williams, J. D. (Joel D.)
Partner: UNT Libraries Government Documents Department
open access

Continuous Material Balance Reconciliation for a Modern Plutonium Processing Facility

Description: This paper describes a safeguards approach that can be deployed at any modern plutonium processing facility to increase the level of safeguards assurance and significantly reduce the impact of safeguards on process operations. One of the most perplexing problems facing the designers of plutonium processing facilities is the constraint placed upon the limit of error of the inventory difference (LEID). The current DOE manual constrains the LEID for Category I and II material balance areas to 2 pe… more
Date: July 2, 2004
Creator: CLARK, THOMAS G.
Partner: UNT Libraries Government Documents Department
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MC&A in a Radiochemical Plant

Description: MC&A in reprocessing plant in the United States is based on solution measurements of the dissolved fuel assemblies, periodic inventories, and solution measurement of product and waste streams.
Date: October 30, 1998
Creator: Crawford, J. M.
Partner: UNT Libraries Government Documents Department
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Formation of a performance-based MC&A assessment program

Description: Department of Energy Order 5633.3, Control and Accountability of Nuclear Materials, requires each facility possessing nuclear material (NM) to {open_quotes}establish a program to assess its control and accountability systems and procedures, and to assure the integrity and quality of these systems.{close_quotes} This paper describes the formation of a performance-based assessment group within Westinghouse Savannah River Company (WSRC) Material Control and Accountability (MC&A) in response to thi… more
Date: July 1, 1993
Creator: Johnson, H. D. & Wolf, D. A.
Partner: UNT Libraries Government Documents Department
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Spent Nuclear Fuel (SNF) Project Multi Canister Overpack (MCO) Process Flow Diagram Mass Balance Calculations

Description: The purpose of this calculation document is to develop the bases for the material balances of the Multi-Canister Overpack (MCO) Level 1 Process Flow Diagram (PFD). The attached mass balances support revision two of the PFD for the MCO and provide future reference.
Date: September 8, 2000
Creator: KLEM, M.J.
Partner: UNT Libraries Government Documents Department
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Material balance flowsheet Redox Production plant

Description: The attached material balance flowsheet for the proposed Redox Production plant is based on the two chemical flowsheets submitted by R.B. Richards of the Technical Division in HW 13,320 (INDC-3130) and HW 13,452 (INDC 3176). Production rates for the plant have been assumed as 2.5 short tone U per day (including a maximum of 0.75 short tons of U from stored Bi PO{sub 4} waste) and 19 kg. Pu per month (633 gms/day) as established by the Redox Committee. The flowsheets for preparation of solvent e… more
Date: June 6, 1949
Creator: Tomlinson, R.E.
Partner: UNT Libraries Government Documents Department
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Consolidated fuel reprocessing program: a mathematical model for liquid flow transients in a rotary dissolver

Description: A model describing the liquid outlet response to perturbations in the flow to a compartmented rotary dissolver has been developed. The model incorporates stagewise differential material balances coupled with the general equation for flow over a weir to calculate acid concentrations and liquid volumes in each stage. Data were taken from step-change flow experiments conducted on a 0.5-t/d rotary dissolver. The predicted response of the model was in good agreement with the data from the dissolver … more
Date: October 1, 1980
Creator: Lewis, B. E. & Weber, F. E.
Partner: UNT Libraries Government Documents Department
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Production test 234-4, production of plutonium (IV) fluoride by direct hydrofluorination of plutonium (III) oxalate. Final report

Description: A new method for the production of plutonium (IV) fluoride, which is used for the production of metallic plutonium, is described. The method bypasses the oxidation of plutonium(III) oxalate to plutonium(IV) oxide. A production test was executed with favorable yields; the decision to replace the prior method was recommended. This report is from the Hanford Works 234-5 building, March 30, 1951.
Date: March 30, 1951
Creator: Quinn, F.J. Jr.
Partner: UNT Libraries Government Documents Department
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Licensed fuel facility status report. Inventory difference data, July 1, 1995--June 30, 1996

Description: The U.S. Nuclear Regulatory Commission is committed to an annual publication of licensed fuel cycle facility inventory difference data, following Agency review of the information and completion of any related investigations. Information in this report includes inventory difference results for active fuel fabrication facilities possessing more than one effective kilogram of special nuclear material. 1 tab.
Date: February 1, 1998
Creator: Pham, T.N.
Partner: UNT Libraries Government Documents Department
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LANL material control indicator analysis program

Description: The possibility of SNM diversion/theft is a major concern to organizations charged with control of Special Nuclear Material (SNM). Several methods have been put in place to deter and or detect losses of SNM. These include inventory, material control physical barriers and the use of material control indicators (MCI). This paper will discuss the multi-tier LANL review mechanism for detecting and isolating missing SNM by the use of Material Control Indicators. Los Alamos MCI include daily analysis… more
Date: January 1, 2001
Creator: Roybal, G. S. (Gilbert S.)
Partner: UNT Libraries Government Documents Department
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Analysis of the Effects of Compositional and Configurational Assumptions on Product Costs for the Thermochemical Conversion of Lignocellulosic Biomass to Mixed Alcohols -- FY 2007 Progress Report

Description: The purpose of this study was to examine alternative biomass-to-ethanol conversion process assumptions and configuration options to determine their relative effects on overall process economics. A process-flow-sheet computer model was used to determine the heat and material balance for each configuration that was studied. The heat and material balance was then fed to a costing spreadsheet to determine the impact on the ethanol selling price. By examining a number of operational and configuratio… more
Date: December 5, 2008
Creator: Zhu, Yunhua; Gerber, Mark A.; Jones, Susanne B. & Stevens, Don J.
Partner: UNT Libraries Government Documents Department
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Authentication of reprocessing plant safeguards data through correlation analysis

Description: This report investigates the feasibility and benefits of two new approaches to the analysis of safeguards data from reprocessing plants. Both approaches involve some level of plant modeling. All models involve some form of mass balance, either applied in the usual way that leads to material balances for individual process vessels at discrete times or applied by accounting for pipe flow rates that leads to material balances for individual process vessels at continuous times. In the first case, m… more
Date: April 1, 1995
Creator: Burr, T. L.; Wangen, L. E. & Mullen, M. F.
Partner: UNT Libraries Government Documents Department
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Material balance areas and frequencies for large reprocessing plants

Description: It has long been recognized that facilities with a large nuclear material throughput will probably not meet the International Atomic Energy Agency (IAEA) goal for detecting trickle diversion of plutonium over periods of about one year. The reason is that measurement errors for plutonium concentration and for liquid volume are often approximately relative over a fairly wide range of true values. Therefore, large throughput facilities will tend to have large uncertainties assigned to their annual… more
Date: August 1, 1994
Creator: Burr, T.
Partner: UNT Libraries Government Documents Department
open access

MATERIAL TRACKING USING LANMAS

Description: LANMAS is a transaction-based nuclear material accountability software product developed to replace outdated and legacy accountability systems throughout the DOE. The core underlying purpose of LANMAS is to track nuclear materials inventory and report transactions (movement, mixing, splitting, decay, etc.) to the Nuclear Materials Management and Safeguards System (NMMSS). While LANMAS performs those functions well, there are many additional functions provided by the software product. As a mater… more
Date: June 7, 2010
Creator: Armstrong, F.
Partner: UNT Libraries Government Documents Department
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Material accountancy for metallic fuel pin casting

Description: The operation of the Fuel Conditioning Facility (FCF) is based on the electrometallurgical processing of spent metallic reactor fuel. The pin casting operation, although only one of several operations in FCF, was the first to be on-line. As such, it has served to demonstrate the material accountancy system in many of its facets. This paper details, for the operation of the pin casting process with depleted uranium, the interaction between the mass tracking system (MTG) and some of the ancillary… more
Date: August 1, 1995
Creator: Bucher, R. G.; Orechwa, Y. & Beitel, J. C.
Partner: UNT Libraries Government Documents Department
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Implementation of tank volume measurement equipment at the Mayak Production Association

Description: One goal of the program to improve nuclear material protection, control, and accounting (MPC and A) in Russian facilities is to computerize material accounting techniques for bulk materials. Such materials include liquid solutions at radiochemical plants: dissolver, intermediate product, and waste. Material accounting techniques for tank volume measurements (TVM`s) are needed to determine the nuclear material content of these solutions (chemical and isotopic analysis are also required). The con… more
Date: May 1, 1997
Creator: Darenskikh, O.; Suda, S.C.; Valente, J.U. & Zuhoski, P.B.
Partner: UNT Libraries Government Documents Department
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Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Process Flow Diagram Mass Balance Calculations

Description: The purpose of these calculations is to develop the material balances for documentation of the Canister Storage Building (CSB) Process Flow Diagram (PFD) and future reference. The attached mass balances were prepared to support revision two of the PFD for the CSB. The calculations refer to diagram H-2-825869.
Date: May 11, 2000
Creator: KLEM, M.J.
Partner: UNT Libraries Government Documents Department
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Molten-Caustic-Leaching (Gravimelt) System Integration Project. Quarterly report, July--September 1989

Description: Operation of the Gravimelt Integrated Test Circuit for desulfurization and demineralization of coal has been completed. A 48-test process matrix was performed over 750 hours of operational time resulting in production of 3,000 pounds of treated coal suitable for further test and evaluation. Analysis of the several thousand data is underway. Assessment of coal material balance data shows an average 98% closure with 2% conversion of coal to humics and phenolics, 3% conversion to hydrogen and meth… more
Date: October 10, 1989
Partner: UNT Libraries Government Documents Department
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Epic: An Error Propagation/Inquiry Code. [Epic Estimates the Variance of a Materials Balance Closed About a Materials Balance Area in a Processing Plant]

Description: The use of a computer program EPIC (Error Propagation/Inquiry Code) will be discussed. EPIC calculates the variance of a materials balance closed about a materials balance area (MBA) in a processing plant operated under steady-state conditions. It was designed for use in evaluating the significance of inventory differences in the Department of Energy (DOE) nuclear plants. EPIC rapidly estimates the variance of a materials balance using average plant operating data. The intent is to learn as muc… more
Date: January 1, 1985
Creator: Baker, A. L.
Partner: UNT Libraries Government Documents Department
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The LANL Physical Inventory Program

Description: The LANL physical inventory program (statistically based) provides assurance that the inventory is represented to the defined confidence levels. In addition, it establishes a benchmark to prove that the inventory is accurately stated. The LANL's Physical Inventory Program for nuclear materials requires the performance of periodic physical inventories and special inventories of nuclear material. The Inventory Program also requires the reconciliation of inventory measurements with previously esta… more
Date: January 1, 2001
Creator: Pompeo, J. A. (John A.)
Partner: UNT Libraries Government Documents Department
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Geo-Engineering Modeling Through Internet Informatics (GEMINI)

Description: GEMINI (Geo-Engineering Modeling through Internet Informatics) is a public-domain web application focused on analysis and modeling of petroleum reservoirs and plays (http://www.kgs.ukans.edu/Gemini/index.html). GEMINI creates a virtual project by ''on-the-fly'' assembly and analysis of on-line data either from the Kansas Geological Survey or uploaded from the user. GEMINI's suite of geological and engineering web applications for reservoir analysis include: (1) petrofacies-based core and log mo… more
Date: May 13, 2004
Creator: Watney, W. Lynn & Doveton, John H.
Partner: UNT Libraries Government Documents Department
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Fuel Retrieval System Process Flow Diagrams Mass Balance Calculations for K West Basin

Description: This calculation justifies the numbers used for the material balance on the process flow diagrams for the KW Basin Fuel Retrieval Subproject. The purpose of these calculations is to develop the material balances that are documented in the Fuel Retrieval System (FRS) Process Flow Diagrams for future reference. The attached mass calculations were prepared in support of revising the fuel retrieval system process flow diagrams for the 105K West Basin. The calculations refer to diagram H-1-81164.
Date: January 3, 2000
Creator: REED, A.V.
Partner: UNT Libraries Government Documents Department
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