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This report describes research, development, support, and test activities in the Sandia Laboratory Aerospace Nuclear Safety Program.

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"An Aerial Radiographic Measuring Survey (ARMS) of the Arguello area was made for the Civil Effects Test Operations, Division of Biology and Medicine, U.S. Atomic Energy Commission, by Edgerton, Germeshausen & Grier, Inc.(EG&G), between Apr. 5 and Apr. 29, 1962. The survey was part of a nationwide program to measure the present environmental levels of gamma radiation" (p. 5).

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The power of high flux fuel assemblies and three-tube drivers planned for future operations is limited by the burnout safety factor (BOSF). In the past, the power of standard production fuel assemblies was limited almost always by one of the hydraulic limits, and in most cases the assemblies operated at powers significantly below that permitted by the BOSF limit. The burnout conditions for an ``ideal`` fuel surface have been well established in mockups at SRL and Columbia University. Little experimental data are available on nonidealities (such as local hot spots), although calculated factors are applied to the BOSF to account for certain nonidealities. Because of operation at the BOSF limit, better knowledge is needed of the effects of nonidealities and other factors on heat transfer burnout of fuel surfaces. This memorandum presents a program designed to give a better understanding of BOSF.

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This report attempts to present a comprehensive survey of published data on the subject.

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This report, from the Chemical Processing Department at HAPO, April, 1965 discusses the following: Production operation; Purex and Redox operation; Finished products operation; maintenance;Financial operations; facilities engineering; research; and employee relations.

The compatibility of Dowex 1x4 nitrate form anion resin with nitric acid, and the compatibility of several types of plastic tubing with nitric acid were investigated. Ignition properties of resin extract, treated resin and mixtures of tubing extract with either resin extract or treated resin were also investigated.

The scope of this report covers specifications of full bridge, weldable, radiation resistant, strain-gage transducers.

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This report covers the period May 1, 1964, to May 1, 1965, since the last report submitted on May 1, 1964, and is the fifth annual report in the series. The "Scintillation Counter" was put into operation on May 10, 1961, and has been in satisfactory operation except for brief periods of down time for modification, repair, and maintenance.

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Monthly newsletter of the High Plains Underground Water Conservation District No. 1, discussing the field of underground water. Topics include profiles of water conservation research, annual pre-plant soil moisture survey data, annual Winter Water Level measurement data, and information about the latest water conservation tips.

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To determine the present flow properties of the KE downcomer and the effect of small flow increases upon the downcomer pressure characteristics.

The specific impulse achieved in a pulsed rocket engine augmented with a fissioning nuclear bomb could be greater than that of any continuous flow engine. To a certain extent, this increase in specific impulse would be obtained at the expense of motor weight and average thrust. This paper considers the first of these limitations, motor weight, and estimates the highest effective specific impulse to be expected from a nuclear-pulsed rocket motor with respect to the weight of the motor.