This report talks about Applications of static converters in power conditioning

The production reactors operated by Douglas United Nuclear, Inc., use treated Columbia River water as the coolant on a once-through basis. Thus, radionuclides formed largely by the neutron activation of river salts are discharged to the river. One method of reducing the quantity of radionuclides in the effluent is to increase the efficiency of parent isotope removal during the coolant treatment process. It was recognized that an alum feed rate of 18 ppM is not necessarily optimum throughout the year. During certain periods it may be well in excess of requirements and overfeeding could be as detrimental to efficient parent isotope removal as underfeeding. Thus, a continuing effort has been underway to find a method for controlling alum feed rate to an optimum value. Flocculent feed rate control based on producing a constant value of the electrokinetic charge (zeta potential) of the floc has been practiced at some water treatment, plants. Although the hypothesis has not had universal acceptance in the water treatment field, laboratory and field data accumulated at Hanford indicated that further evaluation of the approach was warranted. In order to determine the effects of coagulant control based on zeta potential a half-reactor test was initiated at C …

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This report addresses the coolant pressure drop and enthalpy rise equations for the phoebus-2 nozzle.

This study investigates the cost of shutting down and later starting up the Hanford production complex. Also included are comments on two aspects, other than cost, which are consider to be of great importance. One is the impact of a complete shutdown on the Tri-Cities community. The other is the effect on Battelle`s Pacific Northwest Laboratory. This study encompasses six special shutdown-startup cases. One set of three cases assumes a shutdown of three years; the other set assumes the reactors have been down for a period of five years (from shutdown of the last reactor to startup of the first conventional reactor in the series). within each of the above mentioned sets there are three cases assuming the return of five, six, or seven reactors to weapons production. The sixth and seventh reactors are D and DR respectively. N Reactor is assumed transferred to WPPSS instead of shutdown, and consequently is available for recapture earlier than the conventional reactors. The shutdown schedule is shown in Table IA. The dates, except for the shut down of D Reactor, were picked arbitrarily and can be moved ahead so long as the intervals are kept the same. There is one exception to this …

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This document contains information about the activities of Douglas United Nuclear at the Hanford site during the month of March 1967.

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This document shows the status of production test control tube loadings (at Hanford) in reactor process tubes containing significant amounts of SS materials. This information is entirely numerical and is presented in the form of computer printouts. For additional information on the column headings and the current discharge goal plan, refer to document DUN-1048.

This paper describes procedures which relate to the process of extracting tritium from irradiated lithium aluminate target elements.

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The computer program described calculates graphite oxidation in a variety geometrical arrangements. Reactions involving the gaseous species CO2, CO, H2O, and O2 have been included.

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Areas of work reported include: general radiation effects; toxicity of radioelements; studies on the molecular and cellular levels; environmental radiation studies; atmospheric radioactivity and fallout; marine sciences; radiological and health physics; and radiation instruments.

This document is a Pacific Northwest Laboratory Monthly Activities Report for March 1967, for the Division of Production and Hanford Plant Assistance Programs. Included in this report are brief status reports on the following programs: (1) Direct AEC Sponsored Programs including Columbia River studies, whole-body measurements of Richland school children, field tests using the U{sup 235} Analyzer, and criticality studies (2) Assistance to Douglas United Nuclear including transducer development studies, design of a simulated fuel column, and process technology (3) Assistance to General Electric N-Reactor Department including various fuel element studies, N-process tube scratching studies, and other reactor-related tests and simulations (4) Assistance to Isochem including experimental studies on corrosion, separations instrumentation, etc. and (5) Technical Assistance to the Hanford Plant including programs on environmental evaluations, dosimetry studies, and instrumentation services.

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