541 Matching Results

Search Results

Results: 1 - 24 next
open access

An Analogue Solution of a Reactor Perturbation Initiated by a Metallurgical Phase Transformation of the Fuel

Description: The analysis of a reactor model that is thermally nonlinear is presented. The significant sources of feadback in the closed-loop model ane dilatational changes of the fuel due to axial expansion caused by temperature and metallurgical phase changes. Ths dynamics of this phenomenon has been represented on the Pace electronic analog com puter. The model was subjected to unusually large inputs of sinusoidal power and did not show any drastic tendencies toward being unstable. (auth)
Date: January 1, 1961
Creator: Bryant, L. T.; Carter, J. C. & Janicke, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ARGONAUT REACTOR DATA-BOOK. A compilation of experimental and theoretical results of work done with, or related to, the Argonaut Reactor to July 1960

Description: This compilation was prepared to provide a comprehensive unified summary of the principal elements of the design, operation and nuclear characteristics of the Argonaut Reactor. Its primary content is made up of the theoretical and experimental evaluations of basic reactor parameters, both static and kinetic, which have been made to this date. The Databook includes also some practical information on the reaativity worths of fuel, moderator, and absorbers, as well as some data on radiation in the… more
Date: January 1, 1961
Creator: Sturm, W.J. & Daavettila, D.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Calculation of Nonlinear Radiation Transport by a Monte Carlo Method

Description: A monte Carlo method of solving the one-dimensional equations of nonlinear radiation transport is compared with the Sn "characteristics" method of solution. It is concluded that the Monte Carlo method is accurate and stable and furthermore for a given time-cycle length and space-zone size the Monte Carlo method is more accurate than the Sn method.
Date: January 1, 1961
Creator: Fleck, J. A., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characteristics of Radioactivity Produced by Nuclear Explosives

Description: The amounts and kinds of radioactivities produced by detonation of a nuclear explosive are dependent upon the specific design of the explosive. The two design extremes are a pure fission device, which will produce about 1.4 x 10/ sup 23/ fissions, and therefore about 2.8 x 10/sup 23/ fission products, per kiloton of energy released, and a pure thermonuclear device which would produce no fission products, but would produce approximately 10/sup 23/ atoms of tritium per kiloton. In both cases, int… more
Date: January 1, 1961
Creator: Miskel, J A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemistry of Anhydrous Systems Containing Hydrogen Fluoride and Nitrogen Oxides

Description: Nitrosyl and fluoride ions are formed in liquid anhydrous hydrogen fluoride when nitric oxide, nitrogen sesquioxide, nitrogen tetroxide, or nitrosyl fluoride, are dissolved. Vapor infrared analysis was used to study the solution composition and gaseous reaction products. These solutions react with metallic uranium, plutonium, zirconium, iron, and aluminum, as well as ceramic uranium oxide and uranium carbide, forming soluble nitrosyl metal fluoride complexes and liberating nitric oxide. The ura… more
Date: January 1, 1961
Creator: Horn, Frederick L.; Bartlett, Charles B. & Tivers, Richard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COSTS OF NUCLEAR POWER

Description: The discussion on the costs of nuclear power from stationary plants, designed primarily for the generation of electricity. deals with those plants in operation, being built, or being designed for construction at an early date. An attempt is made to consider the power costs on the basis of consistent definitions and assumptions for the various nuclear plants and for comparable fossil-fuel plants. Information on several new power reactor projects is included. (auth)
Date: January 1, 1961
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Development of High Purity Tantalum and Alloys for Liquid Plutonium containment in Lampre I

Description: By combining arc casting and electron beam melting, spectroscopically pure tantalum and alloys, suitable for containment of molten Pu-Fe alloys, were produced. The 0.1% W alloy was used for the first LAMPRE loading. The effects of a large number of additives on the corrosion resistance of tantalum were tested. Additions of up to 10% tungsten gave increasing endurance. Specimens of tantalum irradiated with neutrons until 3% converted to tungsten were stitl satisfactory in mechanical properties f… more
Date: January 1, 1961
Creator: Bidwell, Richard M.; Ferguson, William E.; Burwell, Calvin C.; Hammond, Philip R.; Davidson, Keith V.; Wykoff, Walter R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental Radioactivity at Argonne National Laboratory. Report for the Year 1959

Description: The results of the environmental monitoring program at Argonne National Laboratory for 1959 are given. The radioactive content of the environment was measured by performing radiochemical analyses and total activity measurements on several types of materials collected on the ANL site and from locations approximately 10, 25, and 100 miles from the Laboratory. The sampling locations are given in Part II. The average total activities in samples of water, material from the beds of lakes and streams … more
Date: January 1, 1961
Creator: Sedlet, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Examination of an Irradiated Prototype Fuel Element for the Elk River Reactor

Description: An examination was made of a prototype Elk River Reactor fuel element irradiated in the EBWR to a maximum burn-up of 1000 Mwd(t). The assembly, which consisted of an array of type 304 stainless-steel tubes fueled with pellets of 97 wt.% ThO/sub 2/-3 wt.% UO/sub 2/, showed insignificant dimensional changes. Irregular vertical packing of the fuel pellets gave a "banded" appearance to the fuel rods becase of preferential oxide deposition. The brazing material used in the center strap of the assemb… more
Date: January 1, 1961
Creator: Neimark, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experiments and Analysis for SM-1 Core II With Special Components

Description: Abstract: This technical report contains a summary of analytical and experimental work performed on SM-1 Core II, with special components is presented. The effects of these special assemblies upon power distribution and core reactivity were calculated and compared to experimental measurements. A thermal analysis was conducted to determine steady state and transient performance of the special test components of the core as well as some of the hotter standard Core II components. Experimental work… more
Date: January 1, 1961
Creator: Lee, D. H.; Robinson, R. A. & Segalman, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geologic Investigations in Support of Project Chariot, Phase Iii, in the Vicinity of Cape Thompson, Northwestern Alaska--Preliminary Report

Description: BS>Geologic investigations were made at the Chariot test site, at the mouth of Ogotoruk Creek in the vicinity of Cape Thompson, Alaska. IN the area within a 15-mile radius of the site, bedrock consists entirely of consolidated clastic and chemical sediments. The test excavation lies entirely in frozen mudstone which is complexly folded and faulted. Moisture determinations conducted within 10 ft of the surface indicated that the moisture content of the rock ranges from 3.1% in the thawed mudston… more
Date: January 1, 1961
Creator: Kachadoorian, R.; Campbell, R. H.; Moore, G. W.; Scholl, D. W.; Lachenbruch, A. H.; Greene, G. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Handbook of Nuclear Safety

Description: Discussions are given of the factors that determine a critical mass, consequences of attaining a critical mass, theory of chain reactions, and margins of safety. Critical and safe conditions are included for the fissionable materi als, U-233, U-235, snd plutonium, both as pure metals and when alloyed with other metals. Considerations are given for heterogeneously and homogeneously moderated systems, and interactions occurring between units in air and water. (B.O.G.)
Date: January 1, 1961
Creator: Clark, H. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Heat Transfer to a Mist Flow. Technical Report No. 5

Description: An experimental and analytical study was made of the heat-transfer characteristics of a mist flow of steam and water droplets flowing vertically upward in a round tube. A simplified analytical model, based on momentum, mass, and energy considerations, was developed which shows qualitatively that severe temperature fluctuations are characteristic of such flows under constant-wall heat-flux conditions. The experimental data showed that the analytical model gave a fairly accurate qualitative descr… more
Date: January 1, 1961
Creator: Parker, J. D. & Grosh, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INVESTIGATIONS OF THE POTASSIUM-ARGON METHOD OF AGE DETERMINATION USING SOLID ISOTOPIC DILUTION AND GAS REMOVAL BY CRUSHING

Description: Preliminary work on a new technique of isotopic dilution analysis useful in the measurement of radiogenic Ar content of rocks or mineral samples in age determination is reported. Argon-38 is added to the sampies as the diluting isotope dissolved in a solid glassy silicate which approximates the pertinent properties of the sample. Crushing as well as melting can be used to extract the representative portion of gas needed to apply the isotopic dilution method. In the preliminary investigations or… more
Date: January 1, 1961
Creator: Naughton, J.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen