Document Details

Oak Ridge National Laboratory Status and Progress Report, July 1958
Subject Terms:
ORNL, physics, chemistry; homogeneous reactor; metallurgy, biology; progress report, physics; thorium oxide, radiation
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Reactors\General; Reactors\General
Document Type:
Publication Date:
1958 Aug 08
Declassification Status:
Never classified
Document Pages:
Accession Number:
Document Number(s):
ORNL-2578, Copy #325; ORNL-2578; Copy No. 325; ORNL2578; CopyNo325
Originating Research Org.:
Atomic Energy Commission
OpenNet Entry Date:
1998 Jun 16
This document contains the ORNL Status and Progress Report for July 1958. Run 16 for the Homogeneous Reactor Test (HRT) was concluded which brought the total thermal power generation by the HRT to about 2000 Mwhr. Samples taken from the blanket region of the HRT during the third power run contained more fission-product iodine activity than did samples from the core region. A study to determine the effect of krypton partial pressure in an oxygen stream on the efficiency of activated charcoal for fission-gas adsorption was completed, and little effect of krypton pressure could be observed below 25 mm when the range from 0 to 760 mm was examined. A total of 1600 lb of 1600 degrees Celsius fired thorium oxide was classified for slurry use. The inert-gas welding procedures developed for titanium were successfully adapted to Zircaloy-2. The corrosion resistance of Nionel was found to be nearly equal to that of type 347 stainless steel in uranyl sulfate solutions at 100, 200, and 300 degrees Celsius. A review was made of the design study of a "pebble-bed" reactor and steam power plant, and concluded that the reactor shows promise of being competitive with the other gas-cooled reactors in the nuclear-power market if it can be established that the fuel will have an adequate lifetime under the radiation conditions specified and that coolant contamination can be controlled in a manner which will permit economic maintenance of the system by either direct or remote methods. In early tests with methanol, 47 percent of the nitric acid in a simulated Darex waste solution was destroyed in 5.5 hour at 100 degrees Celsius, and in 7 hours at 95 degrees Celsius, formaldehyde destroyed >99 percent of the nitric acid. The effect of chloride and thiocyanate ions upon the kinetics of reduction of copper (II) ions at a passive stainless steel electrode was being studied by the potentiostatic technique. The added anions increased the rate of the cathodic process significantly. Experiments were carried out to determine the toxicity of the radiomimetric nitrogen mustard CB 3025 in rats and to determine whether the injection of bone marrow would enable rats to recover from lethal doses of the agent. So far, most animals injected with isologous bone marrow after administration of the drug have survived otherwise lethal doses of the compound. It appears that, isologous bone marrow promotes recovery from the effects of this radiomimetic chemical in much the same way as it promotes recovery from radiation injury. Foreign blood-forming cells taken from fetal animals proved to be superior to blood-forming cells taken from adult mice. A change in the spleens of irradiated mice given rat bone marrow is thought to represent the immune reaction to the foreign tissue. The rate of replacement of red blood cells after bone marrow treatment in the irradiated mouse is independent of the number of bone marrow cells injected. With two different techniques, the red blood cells of a rat were shown to have a life span of 62 days which places their life span in the same general range as that of other species studied, including man. Open literature publications and a visitor list are included.

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