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Zink rotary kiln seal: Cam followers. Revision 1

Description: The CIF will treat hazardous and mixed low-level radioactive waste in a rotary kiln and secondary combustion chamber. A high efficiency air pollution control system follows the secondary chamber. The rotary kiln is designed with a gas seal at each end of its rotating barrel which provides a barrier between the interior of the kiln and outside air. The internal pressure of the rotary kiln will be maintained below atmospheric pressure, so exterior air passing the seals is forced into the kiln`s i… more
Date: December 9, 1994
Creator: Fisher, D.L.
Item Type: Refine your search to only Report
open access

The Zintl Chemistry of the Heavy Tetrel Elements

Description: Exploration of the alkali metal/alkaline-earth metal/heavy tetrel (Sn or Pb) systems has revealed a vast array of new chemistry and novel structure types. The structures and properties of these new materials have been studied in an attempt to understand the chemistry of these and other related systems. The first phase reported is Rb{sub 4}Pb{sub 9} (K{sub 4}Pb{sub 9} type). The compound contains two different types of Pb{sub 9}{sup 4-} deltahedra, a monocapped square pyramid and a distorted tri… more
Date: December 31, 2002
Creator: Corbett, John D.
Item Type: Refine your search to only Thesis or Dissertation
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Zircaloy cladding degradation under repository conditions

Description: Creep, a potential degradation mechanism of Zircaloy cladding after repository disposal of spent nuclear fuel, has been investigated. The deformation and fracture map methodology has been used to predict maximum allowable initial storage temperatures to achieve a thousand year life without rupture as a function of spent-fuel history. Maximum allowable temperatures are 340{degree}C (613 K) for typically stressed rods (70--100 MPa) and 300{degree}C (573 K) for highly stressed rods (140--160 MPa).… more
Date: December 1, 1990
Creator: Santanam, L.; Raghavan, S.; Chin, B. A. & Shaw, H.
Item Type: Refine your search to only Article
open access

Zircaloy Cladding Thickness Testers

Description: Technical report. From Abstract : "A number of similar eddy current instruments were developed to measure the thickness of Zircaloy over uranium metal in the range of 5 to 25 mils, Zircaloy over UO2 in the range of 20 to 40 mils, and the wall thickness of Zircaloy tubes in the range of 20 to 40 mils. The instruments were designed for use with hand-held probes or with feeder-mounted probes to measure the inside and outside cladding thickness of tubular elements and the wall thickness of Zircaloy… more
Date: December 1961
Creator: Goodwin, Leslie E.
Item Type: Refine your search to only Report
open access

Zirconia Solubility in Boroaluminosilicate Glass

Description: In the Idaho Chemical Processing Plant (ICPP) waste streams, zirconia is often the waste load limiting species. It modifies the glass network, enhances durability, increases viscosity and induces crystallization. The limits of its dissolution in boroaluminosilicate glass, with magnesia and soda additions were experimentally determined. A ternary compositional surface is evolved to present the isothermal regimes of liquid, liquid + zircon, liquid + forsterite, and liquid phase sintered ceramic. … more
Date: December 31, 1995
Creator: Raman, S. V.; Bopp, R.; Batcheller, T. A. & Yan, Q.
Item Type: Refine your search to only Report
open access

Zirconia toughened alumina reticulated foam filters. Quarterly report, October 1--December 31, 1997

Description: Work during this period focused on making foam and membrane samples from the ceria zirconia toughened alumina developed in the previous SBIR program. After some adjustment very strong samples which have reasonably good working characteristics. The initial pressure drop measurements through the membrane suggest that it will need to be made with a more open structure.
Date: December 31, 1997
Creator: Buthcer, K.
Item Type: Refine your search to only Report
open access

Zirconium and Technetium Recovery and Partitioning in the Presence of Actinides in Modified Purex Process for ATW Program. Final Report

Description: The modified Purex process flowsheet is based on combination of all irradiated materials, their joint dissolution and reprocessing as a NPP spent fuel solution with abnormal Pu content after addition of recycled depleted U concentrate. Some groups of long-lived radionuclides could be completely recovered and localized at the stage of extraction reprocessing using 30% TBP. Studies were conducted for 10 y to develop the process for recovery, concentration, and localization of U, Pu, Np, Tc, and Z… more
Date: December 31, 1994
Creator: Dzekun, E. G.; Fedorov, Y. S.; Galkin, B. Y.; Lyubtsev, R. I.; Mashkin, A. N.; Mishin, E. N. et al.
Item Type: Refine your search to only Report
open access

Zirconium hydride formation in Hanford production reactor process tubes

Description: Examination of Zircaloy-2 process tubes from Hanford Production Reactors has revealed extensive zirconium hydride formation. In general, attack is limited to the downstream portions of tubes where aluminum spacers are located. Most of the hydride platelets are contained in a case or layer on the inner surface of the tube. It is not unusual to find cases 0.004 to 0.005 in. thick. Analyses of the 0.037 in. wall tubes with such cases intact often reveal hydrogen concentrations greater than 1000 pp… more
Date: December 1, 1967
Creator: Winegardner, W. K. & Griggs, B.
Item Type: Refine your search to only Report
open access

Zirconium metal-water oxidation kinetics. V. Oxidation of Zircaloy in high pressure steam. [PWR]

Description: A series of scoping tests to determine the influence of steam pressure on the isothermal oxidation kinetics of Zircaloy-4 PWR tubing was undertaken. The oxidation experiments were conducted in flowing steam at 3.45, 6.90, and 10.34 MPa (500, 1000, and 1500 psi) at 905/sup 0/C (1661/sup 0/F), and at 3.45 and 6.90 MPa at 1101/sup 0/C (2014/sup 0/F). A comparison of the results of these experiments with those obtained for oxidation in steam at atmospheric pressure under similar conditions indicate… more
Date: December 1, 1977
Creator: Pawel, R. E.; Cathcart, J. V.; Campbell, J. J. & Jury, S. H.
Item Type: Refine your search to only Report
open access

Zirflex Dissolution of the Annular Cladding of Simulated Power Fuel Elements

Description: A study was conducted to compare the estimated dissolution rate of Zircaloy-2 clad annular fuel elements on the fully expesed metal with that in the annuli. Results indicate that decladding of these elements should proceed uniformly on all surfaces. Heat balance data from the study are also reported. (J.R.D.)
Date: December 1, 1959
Creator: Smith, P. W.
Item Type: Refine your search to only Report
open access

Zirflex Dissolution of the Annular Cladding of Simulated Power Fuel Elements

Description: The current interest in a tube-in-tube type Zircaloy-2 clad UO2 fuel element for use in the power reactors provided the incentive for a study of the dissolution of cladding from an annular space. The objectives of the study were to compare the estimated rate of dissolution in the annuli with rates on fully exposed metal. Because of an interest from the design standpoint, heat balance data from the study are reported.
Date: December 9, 1959
Creator: Smith, P. W.
Item Type: Refine your search to only Report
open access

Zone conditioning in a California foothill house

Description: The principal focus of the reported research is the performance of the installed zoned air distribution system in a house located in the foothills northeast of Sacramento California. The 297 m{sup 2} two story house contained a central air conditioner and an air distribution system with four dampered supply duct legs. The air conditioning system included a two speed fan and two speed compressor, with the air handler placed inside a closet and almost all the ducts located inside the building env… more
Date: December 1, 1993
Creator: Jump, D. & Modera, M.
Item Type: Refine your search to only Report
open access

Zone of capture analysis for the A/M area of the Savannah River Site

Description: The groundwater of the A/M Area of the Savannah River Site (SRS) is contaminated with trichloroethylene (TCE) and perchloroethylene (PCE) as the result of the past use and disposal of these solvents. For the purpose of remediating this contamination, the A/M Area of the SRS has been divided into three sectors termed the central, northern (or SRL), and southern sectors. The central portion of the A/M Area has had an active remediation system of eleven recovery wells since 1985 and its effectiven… more
Date: December 1, 1991
Creator: Haselow, J. S.; Beaudoin, C. M. & Schreuder, P. J.
Item Type: Refine your search to only Report
open access

Zone sintering of ceramic fuels

Description: Cold pressed UC{sup 2} fuel compacts are sintered at temperatures greater than about 1850 C while in contract with a sintering facilitator material, e.g., tantalum, niobium, tungsten or a metal carbide such as uranium carbide, thereby allowing for a reduction in the overall porosity and leaving the desired product, i.e., a highly dense, large-grained uranium dicarbide. The process of using the sintering facilitator materials can be applied in the preparation of other carbide materials.
Date: December 31, 1991
Creator: Matthews, R. Bruce; Chidester, Kenneth M. & Moore, H. Gene
Item Type: Refine your search to only Patent
open access

A zooming Web browser

Description: We are developing a prototype zooming World-Wide Web browser within Pad++, a multiscale graphical environment. Instead of having a single page visible at a time, multiple pages and the links between them are depicted on a large zoomable information surface. Pages are scaled so that the page in focus is clearly readable with connected pages shown at smaller scales to provide context. We quantitatively compared performance with the Pad++ Web browser and Netscape in several different scenarios. We… more
Date: December 31, 1996
Creator: Bederson, Benjamin B.; Hollan, James D.; Stewart, Jason; Rogers, David; Vick, David; Ring, Laura et al.
Item Type: Refine your search to only Article
open access

Zuni Mountains, New Mexico as a potential dry hot rock geothermal energy Site

Description: Many of the criteria for the successful exploitation of energy from dry hot rock are met in the Zuni Mountains, New Mexico. This area falls within a broad region of abnormally high heat flow on the Colorado Plateau. Within this region, a variety of evidence indicates that local ''hot spots'' may be present. These ''hot spots'' are prime targets for dry hot rock exploration. A site-evaluation program utilizing geological, geochemical-geochronological, and geophysical techniques is proposed to de… more
Date: December 1, 1975
Creator: Laughlin, A. W. & West, F. G.
Item Type: Refine your search to only Report
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