Download or read book Applications of Bioassay of Uranium written by Robert Earl Alexander and published by . This book was released on 1974 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An American National Standard written by American National Standards Institute and published by . This book was released on 1995 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American National Standard Bioassay Programs for Uranium written by American National Standards Institute and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioassay Programs for Uranium written by American National Standards Institute and published by . This book was released on 2013 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioassay Programs for Uranium written by American National Standard Institute and published by . This book was released on 1996 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Internal Dosimetry Model for Applications to Bioassay at Uranium Mills written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Bioassay of Uranium written by R. E. Alexander and published by . This book was released on 1974 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioassay Measurements for Uranium Using Sputter Initiated Resonance Ionization Spectroscopy written by and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Bioassay Program at Uranium Fuel Fabrication Plants analysis of Plant B Data written by D. Biggs and published by . This book was released on 1981 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioassay at uranium mills written by William C. King and published by . This book was released on 1979 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Uranium Bioassay written by Federal-Provincial Advisory Committee on Environmental and Occupational Health (Canada). Working Group on Bioassay and In Vivo Monitoring Criteria and published by . This book was released on 1987 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Practical Issues in Discriminating Between Environmental and Occupational Sources in a Uranium Urinalysis Bioassay Program written by and published by . This book was released on 1994 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Workers at two Department of Energy facilities, the Pantex Plant in Texas and the Hanford Site in Washington, are potentially exposed to class Y depleted or natural uranium. Since trace amounts of uranium are naturally present in urine excretion, site bioassay programs must be able to discern occupational exposure from naturally occurring uranium exposure. In 1985 Hanford established a 0.2-[mu]g/d environmental screening level for elemental uranium in urine; the protocol was based on log-normal probability analysis of unexposed workers. A second study of background uranium levels commenced in 1990, and experiences in the field indicated that there seemed to be an excessive number of urine samples with uranium above the screening level and that the environmental screening level should be reviewed. Due to unforeseen problems, that second study was terminated before the complete data could be obtained. Natural uranium in rock (by weight, 99.27% 288U, 0.72% 235U, and 0.006% 234U) has approximately equal activity concentrations of 238U and 234U. Earlier studies, summarized by the U.S. Environmental Protection Agency in 51 FR 32068, have indicated that 234U (via 234Th) has a greater environmental mobility than 238U and may well have a higher concentration in ground water. By assuming that the 238U-to 234U ratio in the urine of nonoccupationally exposed persons should reflect the ratio of environmental levels, significant occupational exposure to depleted uranium would shift that ratio in favor of 238U, allowing use of the ratio as a co-indicator of occupational exposure in addition to the isotope-specific screening levels. This approach has been adopted by Pantex. The Pacific Northwest Laboratory is studying the feasibility of applying this method to the natural and recycled uranium mixtures encountered at Hanford. The Hanford data included in this report represent work-in-progress.

Download or read book Guide Des Essais Biologiques Relatifs l uranium Dans Les Mines Et Dans Les Usines de Concentration written by Canada. Atomic Energy Control Board and published by . This book was released on 1981 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Bioassay Procedures for Assessment of Internal Radionuclide Deposition written by National Council on Radiation Protection and Measurements and published by Ncrp. This book was released on 1987 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regulatory Document R 5 Regulatory GuideGuide to the Bioassay of Uranium at Uranium Mine mill Facilities written by Atomic Energy Control Board AECB CANADA. and published by . This book was released on 1981 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recommendations for UO3 Plant Bioassay written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alternative urine bioassay programs are described for application with decontamination and decommissioning activities at the Hanford UO3 Plant. The alternatives are based on quarterly or monthly urine bioassay for recycled uranium, assuming multiple acute inhalation intakes of recycled uranium occurring over a year. The inhalations are assumed to be 5μm AMAD particles of 80% absorption type F and 20% absorption type M. Screening levels, expressed as daily uranium mass excretion rates in urine, and the actions associated with these levels are provided for both quarterly and monthly sampling frequencies.

Download or read book Review of Uranium Bioassay Techniques written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of analytical techniques is available for evaluating uranium in excreta and tissues at levels appropriate for occupational exposure control and evaluation. A few (fluorometry, kinetic phosphorescence analysis, [alpha]-particle spectrometry, neutron irradiation techniques, and inductively-coupled plasma mass spectrometry) have also been demonstrated as capable of determining uranium in these materials at levels comparable to those which occur naturally. Sample preparation requirements and isotopic sensitivities vary widely among these techniques and should be considered carefully when choosing a method. This report discusses analytical techniques used for evaluating uranium in biological matrices (primarily urine) and limits of detection reported in the literature. No cost comparison is attempted, although references are cited which address cost. Techniques discussed include:[alpha]-particle spectrometry; liquid scintillation spectrometry, fluorometry, phosphorometry, neutron activation analysis, fission-track counting, UV-visible absorption spectrophotometry, resonance ionization mass spectrometry, and inductively-coupled plasma mass spectrometry. A summary table of reported limits of detection and of the more important experimental conditions associated with these reported limits is also provided.