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A 30-Mwt prototype sodium-to-sodium intermediate heat exchanger and a 30-Mwt prototype sodium-heated steam generator were tested in combined operation in its Sodium Components Test Installation. This report contains the results of test and evaluation of the steam generator. During plant performance tests, performance degradation was observed, which resulted in the initiation of a diagnostic test series. This test series revealed that under certain operating conditions, the thermohydraulic characteristic of the steam generator changed either suddenly or gradually, resulting in overall performance degradation. A structural failure, requiring retirement of the unit, occurred before the diagnostic test series and analytical support effort were completed. This report describes the thermohydraulic and structural performance, including the structural failures, and related evaluation analyses of the Alco/BLH prototype steam generator performed prior to termination of the test and evaluation program. In addition, the report presents a post-test examination plan to obtain data that could possibly explain the cause of performance anomalies and structural failures experienced during testing.

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Irradiation of the carcinogenic benzo[a]pyrene (I) with 1-methylcytosine hydrochloride IIa (molar ratio 1:10) at 3500 {angstrom} in methanol-acetone produces the 6-(1-methylcytos-5-yl)-benzo[a]pyrene (III). The structure of the product shows the hydrocarbon bound through the most active 6-carbon atom to the nucleophilic 5-position of the base. In the second part, the possibility of observing carcinogenic effects on the mouse skin from non-carcinogenic hydrocarbons under the action of UV light is investigated. Both experiments provide evidence that the 4,5-double bond (K region) of I presumably does not play a role in triggering the cancer process.

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For the past six and one-half years the U.S. Atomic Energy Commission under Contract AT(11-1)1468, has supported research in nuclear physics at the University of Arizona. During this period, from April 1, 1965, to September 30, 1971, the AEC has provided $567,000.00 in operational funds and $44,350.00 as a special equipment grant. This report summarizes the research accomplished under that contract.

Some proposals appearing in the literature of laser-initiated thermonuclear fusion microexplosions which assertedly produce about as much thermonuclear energy as was inputted in laser light have been evaluated on physics simulation computer codes. These codes simulate in considerable detail the physical processes deemed to be relevant in such proposed schemes to produce a time history of the proposed microexplosion system. Output of such codes will be presented to demonstrate that the thermonuclear performance of such systems fall far short of approximation-rich analytic estimates, and the role of such approximations in producing such discrepancies is briefly discussed.

Design data for a Deep Pocket Hydrostatic Journal Bearing is presented. A wide range of possible operating conditions in the turbulent regime is examined. Both pressure flow induced turbulence and Bernoulli type inertia effects are accounted for in the generation of this data. Design data is presented for two bearing configurations, one selected for good stiffness characteristics, and the other with good balance between flow and stiffness. Tables of data are presented which provide load, flow, stiffness and damping of these bearings as a function of eccentricity ratio. In addition curves providing off-design information are presented, which may be used to evaluate tolerance effects and to study the performance of non-standard designs.

Progress is reported in a limited study to measure the soil-moisture relationships at the Hanford site. Some of the tests have been conducted or are in progress using soil samples from a site located at the 32-49 Hanford Coordinates. Sections are included on original studies on well 32-49A, tritium assays of soil samples from wells at 32-49 coordinates, installation of sensors to the water table, and soil-moisture models. (JRD)

In this semiannual issue the single pass reactor and water plant data are shown for the six-month period July through December, 1970, together with data for the three preceding six-month periods.

This document contains information on the planning of underwater storage of gas cylinders containing radioactive xenon and krypton gases. The 221-U Canyon Pool Cells 1,2, and 4 appear to be the most promising facilities. The proposed modifications for storing these cylinders underwater include mild steel liners, sealed steel covers, and racks to support the cylinders.

This report is addressed to the radioactive effluent control program of (AEC) facilities operated by Douglas United Nuclear, Inc. It was prepared in response to an inquiry from Atomic Energy Commision AEC Division of Operational Safety via AEC-RL regarding quantities of radionuclides released. The current status, measurement, and activity of the program are described. In addition, other related efforts which have been deferred due to lack of funding are highlighted.

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