Chemical Properties of Uranium Hexafluoride, UF6 (open access)

Chemical Properties of Uranium Hexafluoride, UF6

Uranium hexafluoride has the distinction of being the only stable gaseous compound of uranium known up to the present moment. Because of this property it is the only compound that can be used for processes of isotope separation, such as diffusion, thermal diffusion, centrifuge separation, distillation, and other of a similar nature. Here is a short description of the properties of UF{sub 6} and is intended for a reader interested only casually in this compound. UF{sub 6} is a very reactive compound and a very strong fluorinating agent. It is immediately hydrolized by water. In fluorinating reactions it is reduced to the green highly stable UF{sub 4}. It reacts instantaneously with hydrogen at room temperature. It fluorinates many metals; sodium and mercury are attacked in the cold, lead, zinc, tin and iron on heating; platinum and gold react only above 400 C. With organic compounds like alcohol, ether, benzene or toluene, immediate fluorination takes place with formation of HF and carbon or carbonaceous material. The compound forms colorless, very volatile, beautiful transparent crystals of high refractive index. Melting point = 69.5{sup o}; boiling point at 760 mm = 56.2{sup o}; D20{sup o} = 4.68. The crystals melt water pressure to …
Date: June 25, 1941
Creator: Grosse, Aristid V.
Object Type: Report
System: The UNT Digital Library
Density of Solid Hex Uf$Sub 6$ Near the Triple Point, and the Expansivity of the Liquid From the Triple Point to 92 C (open access)

Density of Solid Hex Uf$Sub 6$ Near the Triple Point, and the Expansivity of the Liquid From the Triple Point to 92 C

The report addresses the density of solid hex near the Triple and the expansivity of the liquid from the triple point.
Date: February 25, 1943
Creator: Wechsler, Martin T. & Hoge, Harold J.
Object Type: Report
System: The UNT Digital Library
Thermopiles for pile monitoring (open access)

Thermopiles for pile monitoring

None
Date: February 25, 1944
Creator: West, J.
Object Type: Report
System: The UNT Digital Library
Photographic film as a pocket radiation dosimeter (open access)

Photographic film as a pocket radiation dosimeter

The energy dependence of film blackening is discussed and shown graphically. The exposure range of films is discussed, and blackening is plotted vs exposure for DuPont No. 502, and for the less sensitive DuPont No. 351. A plan is then described for monitoring radiation exposure to workers by requiring the worker to carry an x-ray film of dental packet size in a badge designed for the purpose. (LEW)
Date: April 25, 1944
Creator: Pardue, L. A.; Goldstein, N. & Wollan, E. O.
Object Type: Report
System: The UNT Digital Library
Exposures exceeding tolerance (open access)

Exposures exceeding tolerance

This letter was written in 1944 and applies to the amount of radiation a person could be subjected to under emergency, wartime conditions. Mr. Stone recommends to Dr. Norwood that no man should be ordered to expose himself to more than a tolerance dose (0.1r in a 24 hr period) except in the case of an extreme emergency in which time is of the essence. And that before any man is asked to exceed tolerance that a radiation trained physician be called in for consultation. His recommendations to said physician are that: (a) a single exposure of 1r would cause no harm and could be repeated at long intervals, (b) an exposure of 5 to 10r would produce loss of appetite and nausea and would increase the chances of genetic change but would cause no clinically detectable changes after the incident, (C) an exposure of 25r would do the same as (b) but with greater probability -- he would be personally willing to take a 25r exposure to accomplish an extremely important job, (4) in general keep exposures well below tolerance, (5) due to the genetic effects, women of childbearing age and younger men should be subjected to none and …
Date: October 25, 1944
Creator: Stone, R. S.
Object Type: Report
System: The UNT Digital Library
SUGGESTIONS FOR A HIGH TEMPERATURE PEBBLE PILE (open access)

SUGGESTIONS FOR A HIGH TEMPERATURE PEBBLE PILE

None
Date: October 25, 1944
Creator: Daniels, F.
Object Type: Report
System: The UNT Digital Library
ATTEMPTS TO PREPARE TRIFLUOROACETIC ACID BY THE REACTION OF COBALTIC FLUORIDES WITH ACETIC ANHYDRIDE AND ACETONITRILE (open access)

ATTEMPTS TO PREPARE TRIFLUOROACETIC ACID BY THE REACTION OF COBALTIC FLUORIDES WITH ACETIC ANHYDRIDE AND ACETONITRILE

None
Date: May 25, 1945
Creator: Halbedel, H.S.
Object Type: Report
System: The UNT Digital Library
Unit purging (open access)

Unit purging

None
Date: June 25, 1945
Creator: Kidder, C. P.
Object Type: Report
System: The UNT Digital Library
Developments in the Casting Department of the Metal Production Plant at Iowa State College. Special Report on the Casting of Uranium at Iowa State College (open access)

Developments in the Casting Department of the Metal Production Plant at Iowa State College. Special Report on the Casting of Uranium at Iowa State College

This report addresses the casting of uranium rods at iowa state college.
Date: August 25, 1945
Creator: Wilhelm, H. A.
Object Type: Report
System: The UNT Digital Library
Suspected leak in 107-F basin (open access)

Suspected leak in 107-F basin

None
Date: September 25, 1945
Creator: Healy, J. W.
Object Type: Report
System: The UNT Digital Library
Determination of Tuballoy Uranium With the X-Ray Spectrograph. Summary Report (open access)

Determination of Tuballoy Uranium With the X-Ray Spectrograph. Summary Report

None
Date: October 25, 1945
Creator: unknown
Object Type: Report
System: The UNT Digital Library
100 Areas, January 15 through January 21 (open access)

100 Areas, January 15 through January 21

This report gives the weekly progress for the B, D, and F piles. The report also gives a brief discussion of the following activities: process water control and pressure drop studies; purging of D, B, and F piles; slug corrosion studies; tube corrosion studies; thimble corrosion studies; and graphite expansion studies.
Date: January 25, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
300 Area, January 15--January 21 (open access)

300 Area, January 15--January 21

This report from the reactor fuel manufacturing facilities at Hanford highlights extrusion, canning, and welding operations. Processing of thorium and bismuth is discussed. Radiography of fuels revealed voids that conformed underweight reject measurements.
Date: January 25, 1946
Creator: Kidder, C. P.
Object Type: Report
System: The UNT Digital Library
The Chelate Compounds of Plutonium (open access)

The Chelate Compounds of Plutonium

None
Date: May 25, 1946
Creator: Wolter, F. J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Repairs to the retention basins (Bldgs. 107) in 100-B, 100-D, and 100-F (open access)

Repairs to the retention basins (Bldgs. 107) in 100-B, 100-D, and 100-F

None
Date: June 25, 1946
Creator: Montgomery, D. C.
Object Type: Report
System: The UNT Digital Library
Determination of reactivity coefficients and rod calibration of D Pile. Interim report on Production Test No. 105-97-P (open access)

Determination of reactivity coefficients and rod calibration of D Pile. Interim report on Production Test No. 105-97-P

The test of March 7, 1947 was planned as a check on power coefficient values; however, an analysis of reactivity data gave evidence of a considerable flattening of ``A`` rod in the region between 0--75 inches out. A second test of longer duration was therefore made on April 1, 1947 in order to obtain a check calibration of this portion of the control rod. The results of this test verified the flattening of this portion of ``A`` rod. The redetermined power coefficients based on new rod calibrations are given.
Date: April 25, 1947
Creator: Kruesi, F. E.
Object Type: Report
System: The UNT Digital Library
100 Areas technical activities report: Engineering, June 1947 (open access)

100 Areas technical activities report: Engineering, June 1947

There were no cases of unusual blistering of slugs being followed under Production Tests. Two normal production tubes were borescoped following trouble with discharge. In Tube 3188-D a distorted slug became stuck in the region of sharp curvature near the inner end of the rear gun barrel; this is the first time this phenomenon has occurred. Examination of irradiated slugs of rolled metal after normal exposure indicates that rolled material has no particular advantages over extruded material from the standpoint of blistering. However, no extensively blistered pieces were found in either the rolled metal are being held for more extended exposure. Inspection of a large number of Van Stone flanges in the D and F Piles has confirmed that the inlet flanges are in generally good condition but that the rear Van Stone flanges of tubes in the 0.140-inch orifice sone of both piles were badly corroded and generally contained deep pits that extended about half-way through the flange. The Van Stone test units are to be installed unshielded in the risor room at the rear of the D Pile, since the shielding required in the X Sample Room exceeded the allowable floor loading. Recent experimental observations indicate that solid …
Date: June 25, 1947
Creator: Woods, W. K.
Object Type: Report
System: The UNT Digital Library
River water sampling (open access)

River water sampling

This report contains a letter, written on July 25, 1947, concerning the sampling program at Columbia River. The author suggests reducing the sampling schedule. He states that chemical composition sampling should be reduced by one-fifth and radioactivity sampling be reduced by one-third. He suggests that only mid-channel samples are required for representative studies. He further states that weekly sampling should occur. By following these suggestions, the cost of the sampling program should be drastically reduced because the hours of manpower taken to sample the river, analyze the data, organize, and store information would be reduced.
Date: July 25, 1947
Creator: Lauder, D. H.
Object Type: Report
System: The UNT Digital Library
CRITICAL DIMENSIONS OF UNTAMPED CONICAL VESSELS (open access)

CRITICAL DIMENSIONS OF UNTAMPED CONICAL VESSELS

None
Date: August 25, 1947
Creator: Murray, R.
Object Type: Report
System: The UNT Digital Library
Research Progress Meeting of March 25, 1948 (open access)

Research Progress Meeting of March 25, 1948

This summary of the research progress meeting for March 25, 1948 covers the following topics: (1) Recent n-p scattering measurements; (2) Mass measurements of mesons; and (3) Naphthalene counters.
Date: March 25, 1948
Creator: Wakerling, R.K.
Object Type: Report
System: The UNT Digital Library
The Path of Carbon in Photosynthesis II. Amino Acids (open access)

The Path of Carbon in Photosynthesis II. Amino Acids

The radioactive amino acid's synthesized from C{sup 14}O{sub 2} by green algae both in the light and in the dark after CO{sub 2}-free preillumination have been separated and identified using paper chromatography and radioautography. The radioactive amino acids identified were aspartic acid, alanine and smaller amounts of 3- and 4-carbon amino acids. This finding as well as the total absence of radioactive glutamic acid substantiates the mechanism for reduction of CO{sub 2} previously postulated by members of this laboratory.
Date: May 25, 1948
Creator: Stepka, W.; Benson, A. A. & Calvin, M.
Object Type: Report
System: The UNT Digital Library
The excretion of hexavalent uranium following intravenous administration. II, Studies on human subjects (open access)

The excretion of hexavalent uranium following intravenous administration. II, Studies on human subjects

Tracer studies employing uranium enriched in the isotopes U{sup 234}, U{sup 235} have been carried out in six human subjects; four males and two females. The uranium, 6 micrograms to 70 micrograms per kilogram of body weight was given intravenously in the hexavalent state as uranyl nitrate. Each individual of the series received a single injection of the metal except for one who was given two widely spaced doses. The first of these was when his condition was normal and the second after an acidosis had been produced by ingestion of ammonium chloride. Renal function tests including urinary catalase, protein, amino N to Creatinine N ratio and clearances of mannitol and p-aminohippurate were done before and after administration of uranium. Only at the 70 microgram per kilogram level in Subject 6 was there a slight rise in urinary catalase and protein suggesting that tolerance had been reached. The excretion of uranium was mainly in the urine, where from 70 to 85% of the administered dose appeared in the first twenty-four hours. Urine of the second twenty-four hours contained about 4% and the third twenty-four hour urine, 1.5% of the administered dose. Detectable amounts were excreted for at least two weeks.
Date: June 25, 1948
Creator: Bassett, S.H.; Frankel, A.; Cedars, N.; VanAlstine, H.; Waterhouse, C. & Cusson, K.
Object Type: Report
System: The UNT Digital Library
Suggested hydrologic investigations at the Hanford Directed Operations (open access)

Suggested hydrologic investigations at the Hanford Directed Operations

This memorandum is an outline of hydrologic investigations that seem desirable at the Hanford Directed Operations of the Atomic Energy Commission. In its present form, the outline is tentative and is intended as a basis for further considerations in the Commission, the Geological Survey, and other agencies concerned. In scope, it seeks to cover (1) advisory functions to the Atomic Energy Commission and its prime contractor with respect to an evaluation of the continuing hazards due to process wastes, also with respect to water-supply problems of the expanding operations at Hanford; also (2) civilian-protection aspects of possible emergencies, especially in the region adjacent to the Hanford reservation.
Date: August 25, 1948
Creator: Piper, A. M.
Object Type: Report
System: The UNT Digital Library
Radioactive decontamination of metals by electropolishing (open access)

Radioactive decontamination of metals by electropolishing

Prior to April 1948 the generally accepted method of reducing the radioactive contamination of metal tools and laboratory apparatus was a series of rinses in aqua regia or various other concentrated acids. This method proved unsatisfactory for three reasons. (A) It was not a dependable method of removing activity. (B) It had a delecterious effect on tools in that it caused serious pitting, which resulted in weakened parts, and exposed a bare metal that was subject to very rapid corrosion. (C) Tools and apparatus once cleaned by this method could not readily be cleaned a second time. With the aforementioned limitations in mind, it became obvious that a new method was required. After considerable investigation into a electrochemical processes the present method was developed. Essentially, the new method is an electropolish bath to remove the activity lodged in the pores of the metal, and a ``follow-up`` chrome plate bath to render the surface impassive to corrosion.
Date: January 25, 1949
Creator: Brodbeck, R. M. & Schommer, G. R.
Object Type: Report
System: The UNT Digital Library