Download or read book Decontamination of Buildings Used for Processing Alpha Emitters written by Paul B. Klevin and published by . This book was released on 1954 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioactive Decontamination written by U.S. Atomic Energy Commission and published by . This book was released on 1965 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionizing Radiations written by Quartermaster Food and Container Institute for the Armed Forces (U.S.). Library Branch and published by . This book was released on 1955 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Health Engineering Abstracts written by and published by . This book was released on 1955 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decontamination of Nuclear Reactors and Equipment written by J. A. Ayres and published by John Wiley & Sons. This book was released on 1970-05-15 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TID written by and published by . This book was released on 1959 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1951 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods for the Minimization of Radioactive Waste from Decontamination and Decommissioning of Nuclear Facilities written by International Atomic Energy Agency and published by . This book was released on 2001 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simple text and photographs introduce the life of George Washington Carver.
Download or read book Nuclear Instruments and Their Uses written by National Research Council (U.S.). Committee on Nuclear Science and published by . This book was released on 1962 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Records Briefs New York State Appellate Division written by and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current List of Medical Literature written by and published by . This book was released on 1954 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes section, "Recent book acquisitions" (varies: Recent United States publications) formerly published separately by the U.S. Army Medical Library.
Download or read book Surface Contamination written by American Association for Contamination Control and published by . This book was released on 1967 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide for Decontaminating Buildings Structures and Equipment at Superfund Sites written by and published by . This book was released on 1985 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties and Behavior of 238PU Relevant to Decontamination of Building 235 F written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report was prepared to document the physical, chemical and radiological properties of plutonium oxide materials that were processed in the Plutonium Fuel Form Facility (PuFF) in building 235-F at the Savannah River Plant (now known as the Savannah River Site) in the late 1970s and early 1980s. An understanding of these properties is needed to support current project planning for the safe and effective decontamination and deactivation (D & D) of PuFF. The PuFF mission was production of heat sources to power Radioisotope Thermoelectric Generators (RTGs) used in space craft. The specification for the PuO2 used to fabricate the heat sources required that the isotopic content of the plutonium be 83 ± 1% Pu-238 due to its high decay heat of 0.57 W/g. The high specific activity of Pu-238 (17.1 Ci/g) due to alpha decay makes this material very difficult to manage. The production process produced micron-sized particles which proved difficult to contain during operations, creating personnel contamination concerns and resulting in the expenditure of significant resources to decontaminate spaces after loss of material containment. This report examines high 238Pu-content material properties relevant to the D & D of PuFF. These relevant properties are those that contribute to the mobility of the material. Physical properties which produce or maintain small particle size work to increase particle mobility. Early workers with 238PuO2 felt that, unlike most small particles, Pu-238 oxide particles would not naturally agglomerate to form larger, less mobile particles. It was thought that the heat generated by the particles would prevent water molecules from binding to the particle surface. Particles covered with bound water tend to agglomerate more easily. However, it is now understood that the self-heating effect is not sufficient to prevent adsorption of water on particle surfaces and thus would not prevent agglomeration of particles. Operational experience at PuFF indicates that the Pu-238 contamination was observed to move along surfaces and through High Efficiency Particulate Air (HEPA) filters over time. Recent research into the phenomenon known as alpha recoil offers a potential explanation for this observed behavior. Momentum is conserved when an alpha particle is ejected from a Pu-238 atom due to radioactive decay. Consequently, the entire particle of which that Pu-238 atom is a constituent experiences a movement similar to the recoil of a gun when a bullet is ejected. Furthermore, the particle often fractures in response to Pu-238 atom disintegration (yielding an alpha particle), with a small particle fragment also being ejected in order to conserve momentum. This process results in the continuous size reduction and transport of particles containing Pu-238 atoms, thus explaining movement of contamination along surfaces and through HEPA filters. A better understanding of the thermal behavior of 238PuO2 particles is needed to inform the planning process for the PuFF D & D project at the 235-F facility. There has been a concern that the surface temperature of individual particles may be high enough to cause problems with decontamination equipment and materials as a result of heat generation due to radioactive decay. A calculation under conservative assumptions shows that the surface temperature of particles less than about 100 [mu]m diameter is not appreciably above ambient. Since most particles in PuFF are on order of 1 [mu]m in diameter, the effect of particle surface temperature on decontamination equipment and materials is expected to be minimal. The result of this calculation also indicates that thermal imaging, which has been under consideration as a method to monitor the progress of system decontamination efforts would not likely be effective. The use of strippable coating was suggested as a possible alternative to other decontamination techniques. One particular system (i.e., Decon Gel 1101) may offer significant advantages over conventional liquid decontamination solutions. Previous trials are discussed and have been used successfully at SRS on various surfaces. Some areas showed minimal improvement, while others presented complete (100%) decontamination. However, small scale testing is recommended prior to the full scale use in the cells of PuFF in building 235-F.
Download or read book Cleaning Up Sites Contaminated with Radioactive Materials written by Russian Academy of Sciences and published by National Academies Press. This book was released on 2009-02-23 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication features papers presented at the Workshop on Cleaning Up Sites Contaminated with Radioactive Materials, held in Moscow in June 2007. This activity was organized by the National Academies in cooperation with the Russian Academy of Sciences and with funding provided by the Russell Family Foundation. The workshop was designed to promote exchanges of information on specific contaminated sites in Russia and elsewhere and to stimulate greater attention to the severity of the problems and the urgent need to clean up sites of concern to the local and international communities.
Download or read book DEG Information Series written by and published by . This book was released on 19?? with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
