[en] It appears that ⁹⁰Sr can be used as a measure of the fission produce contamination of water. A very sensitive method of water analysis of ⁹⁰Sr to ⁹⁰Y using ion exchange concentration with selective elution of ⁹⁰Y is described. Low-level techniques are employed to count the ⁹⁰Y which reflects the concentration of ⁹⁰Sr. Twenty-six liters of city tap water were concentrated and found to contain 3.10 + 0.21 x 10^-4 dpm/m1 of ⁹⁰Sr. If interferring activities are present, the ⁹⁰Sr can be eluted, and radiochemical separation performed

[en] Modifies the Decree n. 29.155, of January 17, 1951, and make others arrangements

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[en] The formulae relating activity and position of a neutron irradiated Indium foil, have been verified experimentally. Measurements with both thin and thick foils for epithermal neutrons and with thick foils for thermal neutrons have been carried out. The experimental results agree qualitatively with the theoretical predictions. (Author)

[en] On a short-term basis the Chemical Development Fused Salt Processing program is essentially a straightforward, systematic investigation of the variables related to the hydrofluorination-dissolution of STR elements in a fluoride fused salt with the objective of establishing a process flowsheet. The significant variables were given in ORNL-56-1-67 and are temperature, type of fluoride melt, rate of HF addition, agitation (assuming that this is a different variable from rate of HF addition), and metallurgical condition of the fuel. Perhaps it is not presumptuous to add studies on nickel corrosion and efficiency of HF utilization to this list. These variables, with the exception of the type of fluoride melt, have already been investigated to the point where plant design should be possible (as a matter of fact, Argonne is proceeding on this presumption). It is unlikely that any significant changes would be made in that design on the basis of any work done in the near future. Consequently, a preliminary flowsheet will be drawn up on the basis of the existing information, and areas for possible further elaboration will be pinpointed.

[en] According to the design task the sanitary corridor satisfies the needs of both RA reactor and HL (Hot laboratory) buildings. This building is located between RA and HL buildings and is connected to both by corridors 3,3 m wide. The access to the building id from the south, i.e. from the local road in the Vinca Institute

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No abstract available