Download or read book Uranium Ore BL 5 written by G. H. Faye and published by 1979.. This book was released on 1979 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Uranium ore BL 5 a certified reference material written by G. H. Faye and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Preparation and Certification of a Uranium Reference Material written by and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the preparation, analysis, and certification of a bulk sample of low-grade uranium ore for use as a reference material. An investigation into its state of radioactive equilibrium established that the material is suitable for the purpose for which it is primarily intended, ie, the calibration of radiometric sorting equipment on mines. Eleven South African laboratories, using several well-established analytical techniques, contributed data on the uranium content of the material.

Download or read book BL 2a and BL 4a Certified Uranium Reference Ores written by Canada Centre for Mineral and Energy Technology and published by . This book was released on 1982 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stress corrosion cracking can potentially cause fuel failures at circumferential ridges in the sheath. finite element computer codes elestres and feast are used to calculate two-dimensional, axisymmetric, elastic-plastic sheath stresses at and near the circumferential ridges. the level of stresses is given by the fuel design (such as pellet/sheath diameters, pellet length, pellet density) and by the operating conditions (such as power history). the accuracy, convergence, and cost of the stress calculations, however, are determined by the discretization used in the calculations: the number of nodes in the finite element mesh; the shape of the individual finite elements; the pattern into which the finite elements are arranged; and the size of the calculation-steps into which the power history is subdivided. in this study, we determined the discretization that gives a reasonable compromise of accuracy, convergence, and cost for the stress calculations. the highest accuracy is obtained by using triangular finite elements of aspect ratios close to one, and assembling them into hexagonal patterns. to caputure the stress gradients, five nodes are required across the sheath wall at the ridge, but two nodes are sufficient near the midplane of the pellet. the resulting mesh contains about 200 nodes and about 300 finite elements. calculation-steps of 6 kw/m provide a convergent solution, with a factor of two margin against numerical divergence. with the above arrangement, feast needs about 2.4 seconds on a cdc/cyber 175 computer to calculate sheath stresses per calculation-step. six radial nodes at the ridge would double the computing cost. decreasing the size of the calculation-steps means more calculations are needed to analyze a given power history, giving a linear increase in computing cost.

Download or read book Lead 210 in Certified Uranium Reference Ores DL 1a BL 4a DH 1a and BL 5 written by Canada Centre for Mineral and Energy Technology and published by . This book was released on 1984 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reference Materials for Environmental Analysis written by Raymond E. Clement and published by CRC Press. This book was released on 1996-11-25 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When an environmental analysis is performed-for example, to determine the quality of water in a lake or to analyze contaminants in fish-it is necessary to have a standard reference against which to compare results. Reference Materials for Environmental Analysis covers standards for environmental analysis in the U.S., Canada, Europe, and elsewhere around the globe. It contains all standards, including those for soil, water, gaseous, and biological analysis. Government, private, and academic laboratories will all need a copy of this book!

Download or read book Preparation of Working Reference Materials Uranium Dioxide written by R. L. Hand and published by . This book was released on 1980 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Preparation of RGU 1 written by H. F. Steger and published by . This book was released on 1985 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Canadian Certified Reference Materials Project agreed in 1984 to prepare a uranium reference material, RGU-1, on behalf of the International Atomic Energy Agency, IAEA. RGU-1 is intended for use in calibrating laboratory gamma-ray spectrometers to determine their sensitivities and stripping ratios for determination of U, Th and K ratios. The reference material was prepared by dilution of uranium reference ore BL-5 (7.09% U) with a silica matrix of negligible U and Th content to give a final U concentration of 400 plus or minus 8 ug/g. This report described the physical and chemical procedures by which RGU-1 was prepared and characterized.

Download or read book Standard Reference Materials written by Martha Smith Richmond and published by . This book was released on 1965 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CERTIFIED URANIUM ORE CONCENTRATE written by and published by . This book was released on 1988 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Certification of Two Ore Reference Materials for Uranium Elemental Analysis written by M. Bickel and published by . This book was released on 1994-08-01 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radium 226 in Certified Uranium Reference Ores DL la BL 4a DH la and BL 5 written by C. W. Smith and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Preparation and Certification of a Uranium Reference Material written by Rosemary Grace Hansen and published by . This book was released on 1983 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cup 1 a Certified Uranium Reference Ore written by CANADA. DEPARTMENT OF ENERGY, MINES AND RESOURCES. CANADA CENTRE FOR MINERAL AND ENERGY TECHNOLOGY. MINERAL SCIENCES LABORATORIES. and published by . This book was released on 1986 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Certification of a Uranium Metal Reference Material for Chemical Analyses written by Commission of the European Communities. Central Bureau for Nuclear Measurements and published by . This book was released on 1983 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Advances in Hydro and Biohydrometallurgy written by Kostas a Komnitsas and published by MDPI. This book was released on 2019-07-30 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue Recent Advances in Hydro- and Biohydrometallurgy that was published in Minerals

Download or read book Uranium Tailings Reference Materials written by Clinton William Smith and published by CANMET : Available by mail from Canadian Government Pub. Centre. This book was released on 1984 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zircaloy-4 fuel sheath specimens 15.2 mm diameter by 0.42 mm wall thickness with beryllium-brazed appendages have been laboratory tested at high temperature with internal gas pressurization and inert gas shielding of the outer surfaces. with sufficient hoop stress at temperatures less than 1073 k cracks, which were due to a beryllium assisted crack penetration mechanism, were found to occur at the appendages. formulae to predict the beryllium penetration and rupture have been derived by westinghouse canada ltd. based on data from direct resistance-heated specimens. the formulae are thought to be able to predict the phenomenon in fuel sheaths with changing temperature/pressure histories. a series of tests was done by canadian general electric to determine the formulae ability to predict the occurrence of beryllium assisted crack penetration in specimens heated indirectly with internal heaters. the tests showed: 1) there is an incubation period before any beryllium assisted crack penetration occurs. 2) at sheath temperatures below approximately equal to 1073 k sheath rupture by excessive mechanical strain will preclude rupture by beryllium assisted crack penetration. 3) the formulae predicted rupture times above and below the braze alloy melting temperature within the previously determined confidence limits. 4) predictions of beryllium assisted crack penetration rupture for specimens with changing temperature/pressure histories were of similar accuracy to predictions of isothermal tests. 5) specimens with an appendage plane of one bearing pad and three spacer pads behaved similarly to the specimens with four spacer pads on which the formulae were based.