Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calculation of xenon in a Hanford pile. Item 2
The possible presence in a thermal reactor of fission products of large nuclear cross-section was anticipated before the Hanford Piles were built. Excess reactivity was provided for this eventuality even though the identity and characteristics of the offending isotopes were not known. It was discovered after initial operation that one isotope was formed, Xe(sup 135), that overshadowed all others in reactivity effect. This isotope was found to have a cross-section of (approximately)3.5 (times) 10(degree) barns. Its growth, decay burnout characteristics have been studied so that they can be predicted with some precision. Since the reactivity transients introduced by the growth, decay, and burnout of xenon are of larger magnitude than transients from any other source, foreknowledge of their extent and direction is mandatory for efficient pile operation. This paper was written August 11, 1952. 4 figs., 4 tabs.
Calculation of xenon in a Hanford pile. Item 2
The possible presence in a thermal reactor of fission products of large nuclear cross-section was anticipated before the Hanford Piles were built. Excess reactivity was provided for this eventuality even though the identity and characteristics of the offending isotopes were not known. It was discovered after initial operation that one isotope was formed, Xe(sup 135), that overshadowed all others in reactivity effect. This isotope was found to have a cross-section of (approximately)3.5 (times) 10(degree) barns. Its growth, decay burnout characteristics have been studied so that they can be predicted with some precision. Since the reactivity transients introduced by the growth, decay, and burnout of xenon are of larger magnitude than transients from any other source, foreknowledge of their extent and direction is mandatory for efficient pile operation. This paper was written August 11, 1952. 4 figs., 4 tabs.
Calculation of xenon in a Hanford pile. Item 2
R. O. Brugge (Autor:in)
1952
15 pages
Report
Keine Angabe
Englisch
Radiation Shielding, Protection, & Safety , Reactor Physics , Hanford Production Reactors , Radioactive Effluents , Calibration , Chemical Analysis , Concentration Ratio , Equilibrium , Forecasting , Fuel Elements , HAPO , Historical Aspects , Power Density , Radionuclide Migration , Reactivity , Reactor Operation , Reactor Shutdown , Reactor Start-Up , Variations , Xenon 135 , EDB/053000 , EDB/220700 , EDB/540130 , Transients
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