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The EBR-I Meltdown--Physical and Metallurgical Changes in the Core. Final Report--Metallurgy Program 7.2.18

Description: As a result of the partial meltdown which occurred in EBR-1 on November 29, 1955, it was necessary to remove the core assembly from the reactor and to separate the enriched fuel section from upper and lower unenriched blanket sections. A temporary cave was constructed on top of the reactor in order to remove the core assembly, and at this time about one-fourth of the fuel elements were removed. In order to perform further disassembly operations under less hazardous conditions, the core assembly… more
Date: November 1, 1957
Creator: Kittel, J. H.; Novick, M. & Buchanan, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Mechanism Explaining the Instability of EBR-I, Mark III

Description: Presented at the International Atomic Energy Agencysponsored Seminar on the Physics of Fast and Intermediate Reactors. Vienna, August 3-11, 196l. A feedback model, was developed to account for resonant instabilities in the Mark II core. In this model, the prompt positive power coefficient effect is ascribed to fuel rod bowing and the delayed negative power coefficient effect to thermally lnduced motions in the lower shield plate. Since this model is supported by observations, it is concluded th… more
Date: September 1, 1961
Creator: Smith, R. R.; Matlock, R. G.; McGinnis, F. D.; Novick, M. & Thalgott, F. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instability Studies With EBR-I, Mark III

Description: The results of instability studies suggest that the operational characteristics of the fully ribbed and rigid Mark III loading are governed by feedback processes that guarantee safe and stable operation under normal operating condiiions. No evidence of positive reactivity effects was noted for the fully-ribbed rigid core. Logical extrapolations of full-power full-flow test data indicate that the reactor could be brought into a resonant condition for power levels exceeding 1000 Mw. Strong nonlin… more
Date: December 1, 1960
Creator: Smith, R. R.; Boland, J. F.; McGinnis, F. D.; Novick, M. & Thalgott, F. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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HAZARD EVALUATION REPORT ON THE FAST REACTOR ZERO POWER EXPERIMENT (ZPR- III)

Description: An evaluation was made of the hazards associated with studies of the use of U/sup 235/ as fuel in the Fast Reactor Zero Power Experiment (ZPR-III) in the design of EBR-II. The systems are blanketed cores having a range of compositions in which the volume fractions of U/sup 235/, U/sup 238/ Fe, and Na are varied. Methods used for protection against accident or damage are described. Excursions resulting if the safety mechanisms did not operate are discussed. (M.C.G.)
Date: October 1, 1961
Creator: Brittan, R. O.; Cerutti, B.; Lichtenberger, H. V.; Long, J. K.; McVean, R. L.; Thalgott, F. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Progress Report on the Experimental Breeder Reactor April 1, 1951 Through January 31, 1953

Description: This report describes the progress on the experimental breeder reactor. It focuses on the approach to critical experiments, calibration of controls and flues and flux distributions.
Date: February 20, 1953
Creator: Lichtenberger, H. V.; Novick, M.; Cerutti, B. C.; Cameron, R. A.; McGinnis, D. F.; Pettitt, E. N. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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