A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis

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Total Pages : pages
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Book Synopsis A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis by : E. J. Kelly

Download or read book A Calibration to Predict Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis written by E. J. Kelly and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prompt gamma (PG) analysis has been used to identify the presence of certain impurities in plutonium oxide, which has been stored in 3013 containers. A regression analysis was used to evaluate the trends between the count rates obtained from PG analysis and the concentration of the impurities in plutonium oxide samples measured by analytical chemistry techniques. The results of the analysis were used to obtain calibration curves, which may be used to predict the concentration of Al, Be, Cl, F, Mg, and Na in the 3013 containers. The scatter observed in the data resulted from several factors including sample geometry, error in sampling for chemical assay, statistical counting error, and intimacy of mixing of impurities and plutonium. Standards prepared by mixing plutonium oxide with CaF{sub 2}, NaCl, and KCl show that intimacy mixing and sampling error have the largest influence on the results. Although these factors are difficult to control, the calibrations are expected to yield semiquantitative results that are sufficient for the purpose of ordering or ranking.

A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis Revision 2

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ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis Revision 2 by :

Download or read book A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis Revision 2 written by and published by . This book was released on 2015 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the new PG calibration regression equation. These calibration equations incorporate new data that have become available since revision 1 of "A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis" was issued [3] The calibration equations are based on a weighted least squares (WLS) approach for the regression. The WLS method gives each data point its proper amount of influence over the parameter estimates. This gives two big advantages, more precise parameter estimates and better and more defensible estimates of uncertainties. The WLS approach makes sense both statistically and experimentally because the variances increase with concentration, and there are physical reasons that the higher measurements are less reliable and should be less influential. The new magnesium calibration includes a correction for sodium and separate calibration equation for items with and without chlorine. These additional calibration equations allow for better predictions and smaller uncertainties for sodium in materials with and without chlorine. Chlorine and sodium have separate equations for RICH materials. Again, these equations give better predictions and smaller uncertainties chlorine and sodium for RICH materials.

A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis

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Book Synopsis A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis by :

Download or read book A Calibration to Predict the Concentrations of Impurities in Plutonium Oxide by Prompt Gamma Analysis written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 5,500 containers of excess plutonium-bearing materials have been packaged for long-term storage following the requirements of DOE-STD- 3013. Knowledge of the chemical impurities in the packaged materials is important because certain impurities, such as chloride salts, affect the behavior of the material in storage leading to gas generation and corrosion when sufficient moisture also is present. In most cases, the packaged materials are not well characterized, and information about the chemical impurities is limited to knowledge of the material's processing history. The alpha-particle activity from the plutonium and americium isotopes provides a method of nondestructive self-interrogation to identify certain light elements through the characteristic, prompt gamma rays that are emitted from alpha-particle-induced reactions with these elements. Gamma-ray spectra are obtained for each 3013 container using a highresolution, coaxial high-purity germanium detector. These gamma-ray spectra are scanned from 800 to 5,000 keV for characteristic, prompt gamma rays from the detectable elements, which include lithium, beryllium, boron, nitrogen, oxygen, fluorine, sodium, magnesium, aluminum, silicon, phosphorus, chlorine, and potassium. The lower limits of detection for these elements in a plutonium-oxide matrix increase with atomic number and range from 100 or 200 ppm for the lightest elements such as lithium and beryllium, to 19,000 ppm for potassium. The peak areas from the characteristic, prompt gamma rays can be used to estimate the concentration of the light-element impurities detected in the material on a semiquantitative basis. The use of prompt gamma analysis to assess impurity concentrations avoids the expense and the risks generally associated with performing chemical analysis on radioactive materials. The analyzed containers are grouped by impurity content, which helps to identify high-risk containers for surveillance and in sorting materials before packaging.

Passive Nondestructive Assay of Nuclear Materials

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ISBN 13 : 9780160327247
Total Pages : 700 pages
Book Rating : 4.3/5 (272 download)

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Book Synopsis Passive Nondestructive Assay of Nuclear Materials by : Doug Reilly

Download or read book Passive Nondestructive Assay of Nuclear Materials written by Doug Reilly and published by . This book was released on 1991 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Strategy and Methodology for Radioactive Waste Characterization

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Publisher : IAEA
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Strategy and Methodology for Radioactive Waste Characterization by : International Atomic Energy Agency

Download or read book Strategy and Methodology for Radioactive Waste Characterization written by International Atomic Energy Agency and published by IAEA. This book was released on 2007 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade significant progress has been achieved in the development of waste characterization and control procedures and equipment as a direct response to ever-increasing requirements for quality and reliability of information on waste characteristics. Failure in control procedures at any step can have important, adverse consequences and may result in producing waste packages which are not compliant with the waste acceptance criteria for disposal, thereby adversely impacting the repository. The information and guidance included in this publication corresponds to recent achievements and reflects the optimum approaches, thereby reducing the potential for error and enhancing the quality of the end product. -- Publisher's description.

Nuclear Science Abstracts

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ISBN 13 :
Total Pages : 1474 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1966 with total page 1474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nuclear Science Abstracts

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ISBN 13 :
Total Pages : 1162 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Plutonium Files

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Publisher : Delta
ISBN 13 : 0307767337
Total Pages : 724 pages
Book Rating : 4.3/5 (77 download)

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Book Synopsis The Plutonium Files by : Eileen Welsome

Download or read book The Plutonium Files written by Eileen Welsome and published by Delta. This book was released on 2010-10-20 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the vast wartime factories of the Manhattan Project began producing plutonium in quantities never before seen on earth, scientists working on the top-secret bomb-building program grew apprehensive. Fearful that plutonium might cause a cancer epidemic among workers and desperate to learn more about what it could do to the human body, the Manhattan Project's medical doctors embarked upon an experiment in which eighteen unsuspecting patients in hospital wards throughout the country were secretly injected with the cancer-causing substance. Most of these patients would go to their graves without ever knowing what had been done to them. Now, in The Plutonium Files, Pulitzer Prize-winning reporter Eileen Welsome reveals for the first time the breadth of the extraordinary fifty-year cover-up surrounding the plutonium injections, as well as the deceitful nature of thousands of other experiments conducted on American citizens in the postwar years. Welsome's remarkable investigation spans the 1930s to the 1990s and draws upon hundreds of newly declassified documents and other primary sources to disclose this shadowy chapter in American history. She gives a voice to such innocents as Helen Hutchison, a young woman who entered a prenatal clinic in Nashville for a routine checkup and was instead given a radioactive "cocktail" to drink; Gordon Shattuck, one of several boys at a state school for the developmentally disabled in Massachusetts who was fed radioactive oatmeal for breakfast; and Maude Jacobs, a Cincinnati woman suffering from cancer and subjected to an experimental radiation treatment designed to help military planners learn how to win a nuclear war. Welsome also tells the stories of the scientists themselves, many of whom learned the ways of secrecy on the Manhattan Project. Among them are Stafford Warren, a grand figure whose bravado masked a cunning intelligence; Joseph Hamilton, who felt he was immune to the dangers of radiation only to suffer later from a fatal leukemia; and physician Louis Hempelmann, one of the most enthusiastic supporters of the plan to inject humans with potentially carcinogenic doses of plutonium. Hidden discussions of fifty years past are reconstructed here, wherein trusted government officials debated the ethical and legal implications of the experiments, demolishing forever the argument that these studies took place in a less enlightened era. Powered by her groundbreaking reportage and singular narrative gifts, Eileen Welsome has created a work of profound humanity as well as major historical significance. From the Hardcover edition.

Modern Trends in Activation Analysis

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ISBN 13 :
Total Pages : 678 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Modern Trends in Activation Analysis by : James R. DeVoe

Download or read book Modern Trends in Activation Analysis written by James R. DeVoe and published by . This book was released on 1969 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Analytical Applications of Nuclear Techniques

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Publisher : IAEA
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Analytical Applications of Nuclear Techniques by :

Download or read book Analytical Applications of Nuclear Techniques written by and published by IAEA. This book was released on 2004 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IAEA has compiled this overview of current applications of nuclear analytical techniques (NATs). The contributions included in this book describe a variety of nuclear techniques and applications, such as those in the fields of environment and health, industrial processes, non-destructive testing, forensic and archaeological investigations, cosmochemistry and method validation. The techniques covered range from classical instrumental neutron activation analysis (INAA), its radiochemical derivative RNAA, in-beam methods such as prompt y neutron activation analysis (PGNAA) and accelerator mass spectrometry (AMS), to X ray fluorescence (XRF) and proton induced X ray emission (PIXE) spectroscopy. Isotopic techniques to investigate element behaviour in biology and medicine, and also to validate other non-nuclear analytical techniques, are described. Destructive and non-destructiveapproaches are presented, along with their use to investigate very small and very large samples, archaeological samples and extraterrestrial samples. Several nuclear analytical applications in industry are described that have considerable socioeconomic impact wherever they can be implemented.

Analytical Methods in the Nuclear Fuel Cycle

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ISBN 13 :
Total Pages : 610 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Analytical Methods in the Nuclear Fuel Cycle by :

Download or read book Analytical Methods in the Nuclear Fuel Cycle written by and published by . This book was released on 1972 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Publications of the National Institute of Standards and Technology ... Catalog

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ISBN 13 :
Total Pages : 452 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)

Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1985 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ERDA Research Abstracts

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ISBN 13 :
Total Pages : 780 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis ERDA Research Abstracts by : United States. Energy Research and Development Administration

Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Analytical Techniques in Uranium Exploration and Ore Processing

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ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Analytical Techniques in Uranium Exploration and Ore Processing by : International Atomic Energy Agency

Download or read book Analytical Techniques in Uranium Exploration and Ore Processing written by International Atomic Energy Agency and published by . This book was released on 1992 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NBS Special Publication

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ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis NBS Special Publication by :

Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ERDA Energy Research Abstracts

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ISBN 13 :
Total Pages : 796 pages
Book Rating : 4.3/5 (126 download)

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Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Radiological Characterization of Shut Down Nuclear Reactors for Decommissioning Purposes

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ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Radiological Characterization of Shut Down Nuclear Reactors for Decommissioning Purposes by : International Atomic Energy Agency

Download or read book Radiological Characterization of Shut Down Nuclear Reactors for Decommissioning Purposes written by International Atomic Energy Agency and published by . This book was released on 1998 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes and assesses radiological characterization as a precursor to decommissioning. It shows the influence of the radioactive inventory on the planning and strategies of decommissioning and also presents an extensive overview of characterization results on various reactors which have been or are being decommissioned.