Serial/Series Title
Fiscal Year 1997
2
Fiscal Year 2003
2
Fiscal Year 2012
2
Irradiation Processing Department Monthly Record Report
2
Winter Fuels Report
2
ARM Facilities Newsletter
1
Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects Quarterly Report
1
Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipline Leak Detection Progress Report
1
Annual Illness and Injury Surveillance Report
1
Electric Power Monthly
1
18 More
Country
States
Counties
Decade
Month
Day
Language
3,495 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
3,495
next
The Site B Foundry (Final Report on Part I of P.A. No. 151-ML-54-2, F.S. 41)
The Site B Foundry is equipped for the melting and casting of tuballoy and its alloys. Castings weighing up to 750 pounds and as long as 40 inches can be made. Melting can be carried out in the vacuum, in inert gases or under fluxes. Heating is by high frequency induction. A description of the generally foundry layout, the furnace construction and operation, and of the auxiliary equipment is given in this report. The casting technique used in the Site B Foundry is designed to minimize piping and cold shuts in the billets. The top of the mold is kept hot and freezing of the billet takes place from the bottom. This hot topping minimizes piping. Controlled pouring into warm molds minimized cold shuts.
Date:
February 12, 1945
Creator:
Lauletta, Paul
Object Type:
Report
System:
The UNT Digital Library
DIVISION OF METALLURGY REPORT FOR MONTH OF MARCH 1945
None
Date:
April 12, 1945
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Progress Report for the month of August 1945
None
Date:
September 12, 1945
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Solubility of Plutonium(IV) Phosphates and the Phosphate Complexes of Plutonium(IV)
None
Date:
October 12, 1945
Creator:
King, E.L.
Object Type:
Report
System:
The UNT Digital Library
The Evaluation of Uranium Tetrachloride. Analytical Report
None
Date:
March 12, 1946
Creator:
Burns, R. E. & DeVries, T.
Object Type:
Report
System:
The UNT Digital Library
THE CHEMISTRY OF THE REACTION OF URANIUM HEXAFLUORIDE WITH ACTIVATED CARBON
The effects of temperature, time and other variables on the rate and extent of reaction between UF/sub 6/ and various types, grades and particle sizes of commercial activated carbon have been studied experimentally. It is shown that both hydrolysis and reduction of the UF/sub 6/ occur, the latter more slowly than the former. Reduction leads to the formation of a mixture of fluorocarbons ranging from CF/sub 4/ to a wax-like maternial volatile only above 250 deg C. There is also evidence for the adsorption of UF/sub 6/ on an undetermined substrate. (auth)
Date:
April 12, 1946
Creator:
Wilson, T. P.; Schuman, S. C. & Simons, E. L.
Object Type:
Report
System:
The UNT Digital Library
100 Areas technical progress letter No. 105, July 2--July 8
The physics of the shutdown of the D pile on July 2 is emphasized in the operation report. The F pile shutdown and operating specifics are also discussed. Water, corrosion, and engineering are reported for the B, D, and F areas.
Date:
July 12, 1946
Creator:
Jordan, W. E.
Object Type:
Report
System:
The UNT Digital Library
The Chelate Process I
The chelate process for the extraction and decontamination of plutonium has been investigated. The process is designed as an alternate process for ihe Hanford type operation. The basic chemical factors have been studied and two flowsheeis have been developed and tested for recovery of plutonium. An over-all yield of plutonium in excess of 99% is reported for one flowsheet using benzene as the organic solvent and 98.5% when toluene was substituted for benzene. The general factors involved in establishing all details of the flowsheets are thoroughly discussed and decontamination studies are indicated to complete the study in the present equipment. (auth)
Date:
December 12, 1946
Creator:
Thomas, J. R. & Crandall, H. W.
Object Type:
Report
System:
The UNT Digital Library
Graphite expansion committee meeting of December 6, 1946
The twelfth meeting of the Graphite Expansion Committee was held on December 6, 1946. A summary of the meeting is as follows. Recent laboratory studies suggest that the rate of graphite expansion decreases with exposure when the samples are exposed in an air atmosphere at ambient pile temperature, through the relative effects of atmosphere and temperature are not known. These observations are in qualitative agreement with the decreased rate of vertical expansion of the piles. The neoprene seal strips at the top of the near and far sides of the F Pile were removed during November. The cork seal in back of the Third Safety Tanks at the F Pile was also removed. Current estimates predict the general rupture of Van Stone flanges after 300,000--350,000 MD of pile operation if the rate of expansion is uniform. The working model of the split gun-barrel has been completed but is being modified to provide a key to prevent the gun-barrel flange from rotating. The proposal to replace a few tubes in operating piles, as discussed last month, has been modified in favor of more extensive work at the B Pile before moving to the D or F Piles.
Date:
December 12, 1946
Creator:
Woods, W. K.
Object Type:
Report
System:
The UNT Digital Library
100 Areas Technical Activities Report - Physics, January 1947
Four routine shutdowns were experienced during the month. A measurable amount of the excess reactivity held in the control rods at the first of the month has been lost in the decrease in the average accumulated exposure of all the metal in the pile. The vertical safety rod guides have been measured for vertical alignment by the Maintenance Dept. A definite pattern has been found in the misalignment of the guides. The horizontal rod thimbles were borrowed on January 2, 1947 to see if any leaks were present. No leaks were observed but No. 2 Rod and No. 8 Rod had heavy gouge marks along the longitudinal axes. Several thimbles contained white corrosion. During the month two new bismuth tubes were established, 2871-D and 2877-D. This now gives the desired pattern of ten bismuth tubes.
Date:
February 12, 1947
Creator:
Montgomery, E. B.
Object Type:
Report
System:
The UNT Digital Library
Hanford Engineer Works technical progress letter No. 153, June 1--June 7
Progress is reported in the physics and engineering aspects of pile technology.
Date:
June 12, 1947
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
CHLORINE ($sub 17$C$sup 136$) TRACER STUDIES. PART I. URANIUM TRIOXIDE- HEXACHLOROPROPENE REACTION MECHANISM. PART II. EXCHANGE REACTIONS OF SEVERAL ORGANIC CHLORIDE-INORGANIC CHLORIDE SYSTEMS
None
Date:
January 12, 1948
Creator:
Lee, D. A. & Woodard, R. W.
Object Type:
Report
System:
The UNT Digital Library
THE NEUTRON ENERGY DISTRIBUTION IN THE CENTER OF THE LOS ALAMOS PLUTONIUM REACTOR
None
Date:
May 12, 1948
Creator:
Hall, J.H.
Object Type:
Report
System:
The UNT Digital Library
Paramagnetic Suseptibilities and Electronic Structure of AqueousCations of Elements 92 to 95
Magnetic susceptibilities per gram atomic weight of elements 92 to 95 in most of their oxidation states were measured on 0.1 ml of solution which was 0.007 to 0.09 M in heavy element. The values obtained (all paramagnetic) in c.g.s. units x 10{sup 6} were: U(IV), 3690; Np(VI), 2060; Np(V), 4120; Np(IV), 4000; Pu(IV), 1610; Pu(III), 370; Am(III), 720. The results could be interpreted only on the basis of electronic configurations 5f{sup n}, even though susceptibilities were generally lower than the theoretical values and lower than experimental values for corresponding lanthanide cations. The lower values should be expected as a result of the Stark effect produced by fields of anions and of water dipoles. Failure of the Russell-Saunders approximation to the coupling between electrons may account for some of the error in the theoretical calculations. Wider multiplet splitting in the actinides accounts for the fact that the susceptibilities of Pu(III) and Am(III) are many-fold lower than those of Sm(III) and Eu (III) respectively.
Date:
November 12, 1948
Creator:
Howland, Jerome J. & Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
Investigation of Beth-Flo Gentile flow tube
Tests were made to determine the straight run limitations of the Beth-Flo Gentile Flow Tube. The effect of surface roughness on tube performance was also investigated. The permanent head loss of the tube was determined.
Date:
March 12, 1949
Creator:
Tausche, P.E.; Williams, C.C. & Saleeby, R.N.
Object Type:
Report
System:
The UNT Digital Library
EXPERIMENTAL BREEDER PROJECT REPORT FOR THE PERIOD DECEMBER 1, 1948 THRU FEBRUARY 28, 1949
None
Date:
April 12, 1949
Creator:
Lichtenberger, H. V.
Object Type:
Report
System:
The UNT Digital Library
CHEMISTRY DIVISION, SECTION C-1 SUMMARY REPORT FOR JANUARY, FEBRUARY, AND MARCH 1949
Physical and inorganic Chemistry. Studies are reported on: volatile complexes of ZrCl/sub 4/ and HfCl/sub 4/ with POCl/sub 3/; reaction of UCl/sub 4/ with LiAlH/sub 4/; preparation and properties of metal uranates and polyuranates; heats of solution of UO/sub 2/(NO/sub 3/)/sub 2/ hydrates; absorption spectra of Np in HClO/sub 4/, and separation of Np and Pu chlorides by a flow method. Process Chemistry. Extraction of Th from Mailiackrodt U raffinate was studied. Nuclear Chemistry aad Radiochemistry. Invesigations were carried out on: organic tritium; exchange reactions of U ions in solution; exchange reactions of Fe in aqueous solutions: Tc recovery from old Hanford slugs; (a,2n) cross section of Pa/sup 231/; and spontaneous fission counting U/sup 236/ and Pu/sup 238. (T.R.H) l822 Nuclear Chemistry and Radiochemistry. Measurements of the half- lives of Ac/sup 227/ and RaD(Pb/sup 210/) were continued. The effective pile neutron capture cross sections for U/sup 236/ were determined by measuring the activity of the resultant U/sup 237/ with an end window geiger counter. A study of ion chambers for tritium analysis is presented. Procedures were developed for the determination of tritium and C/sup 14/ in onganic compounds. Physical and Inorganic Chemistry. An investigation of the electrochemistry of Np in …
Date:
May 12, 1949
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Systematics of Alpha-Radioactivity
Correlations of alpha-decay energies in terms of mass number and atomic number have been made for all of the alpha-emitting species now numbering over 100. For each element isotopes show increase in alpha-energy with decrease in mass number except in the region of 126 neutrons where there is an explainable reversal. This reversal has the effect of creating a region of relatively low alpha-energy and long half-life at low mass numbers for such elements as astatine, emanation, francium, and possibly higher elements as had been noted already for bismuth and polonium. Methods and examples of using alpha-decay data to define the energy surface in the heavy element region are discussed. The regularities in alpha-decay are used for predictions of nuclear properties including prediction of the beta-stable nuclides among the heavy elements. The half-life vs. energy correlations show that the even-even nuclides conform well with existing alpha-decay theory, but all nuclear types with odd nucleons show prohibited decay. The reason for this prohibition is not found in spin changes in the alpha-emission but in the assembly of the components of the alpha particle, and this theory is discussed further in terms of observations made on nuclides having two or more alpha-groups. …
Date:
September 12, 1949
Creator:
Perlman, I.; Ghiorso, A. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
Index of classified reports from the University of Rochester Atomic Energy Project, January 1948 through December 1949
This document is an index of classified reports from The University of Rochester Atomic Energy Project for the period, January 1948 to December 1949. Work was in the general area of health and biology.
Date:
January 12, 1950
Creator:
Blair, H.A.
Object Type:
Report
System:
The UNT Digital Library
Thorium Alloys--the Thorium-Bismuth System
None
Date:
July 12, 1950
Creator:
Johnson, H. B.
Object Type:
Report
System:
The UNT Digital Library
234-5 Development summary report: Recovery of plutonium from skulls
None
Date:
October 12, 1950
Creator:
Lyon, W.L. & Facer, J.F.
Object Type:
Report
System:
The UNT Digital Library
THE ROASTING OF PITCHBLENDE ORE
None
Date:
December 12, 1950
Creator:
Buckheim, O.J.; Kloepper, H.C.; Paine, R.M.; Ruehle, A.E.; Stevenson, J.W. & Weber, L.G.
Object Type:
Report
System:
The UNT Digital Library
Calculated and observed P-10 production in H-10
Recently three H-10 tubes (2,772, 2,176, 3,673) have been removed and the tritium and other gases have been extracted from the Z slugs. It is of interest to compare the calculated volumes of gases with the amounts obtained in these extractions. The comparison is given in this paper. The reasons for the large disagreement are not known at present. As pointed out below, the weakest part of the calculation is the knowledge of the exposure which these Z slugs have received. It is possible that some losses, particularly of tritium, occur during exposure and extraction. In view of these uncertainties, it does not appear likely that more 25 has been burnt up per unit of tritium than has been previously estimated.
Date:
January 12, 1951
Creator:
Ozeroff, W. J.
Object Type:
Report
System:
The UNT Digital Library
Removal of ruptured slug from tube No. 2562-H
It is the purpose of this document to record the significant steps in the removal of a ruptured slug from tube {number_sign}2562-H.
Date:
February 12, 1951
Creator:
Haaga, J. A.
Object Type:
Report
System:
The UNT Digital Library