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The attached pages show the status of production tests of control tube loadings in reactor process tubes containing significant amounts of SS materials. For further description of column headings and the current discharge goal exposure plan refer to Document DUN-3443. Data are in table format.

This report presents the details of the activities of Douglas United Nuclear at the Hanford site during the month of March 1968.

C Reactor experienced two severe fuel failures, one in process tube 2562 on 10-27-67, and one in process tube 3361 on 12-27-67, both resulting in major efforts to effect their removal. The intent of this document is to present a summary of the action taken for the removal of the failed elements.

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The purpose of this report is to provide a brief written description of the facilities existing at Hanford for research and development in the fields of heat transfer and hydraulics.

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A method utilizing a diffusion controlled electrochemical reaction was used to measure average and instantaneous mass transfer coefficients at the solid-liquid interface in upward gas-liquid climbing film flow in a vertical annular duct. These measurements give some indication of the mechanics of flow of the film, the extent of turbulence at the inner wall, and the effect of film thickness and wave motion on the mass transfer process at the inner wall. Predictions of incipient downflow of the film, shear stress at the inner wall, and interfacial shear stress were obtained from these measurements. Fluctuations in the velocity gradient at the inner wall were also studied. Results of this study are in fair agreement with previous work and with theoretical predictions based on simplified momentum balance concepts.

An evaluation of several alternate ways to redesign the Prototype Steam Generator to eliminate stainless steel pressure parts is being made. Recommendations will be made to the Commission. Fabrication of the Prototype is held up. A draft of the Interim Report containing design criteria, steam generator preliminary cost trend curves and preliminary specifications has been submitted to the Commission for approval.

The total cross sections for resonant charge exchange have been measured as a function of energy in the range from 10 to 500 eV for the Cs{sup +}-Cs, Rb{sup +}-Rb, and K{sup +}-K systems. The agreement with certain data obtained at higher energies for these systems, and with theoretical cross sections of Smirnov is satisfactory.

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The purpose of this report is to explain the computerized method of reporting operating quality costs at the Neutron Devices Department (NDD), St. Petersburg, Florida. Quality Control Management recognized the need to report operating quality costs more meaningfully. With the aid and cooperation of the Finance Section, a GE 415 computerized (COBOL) procedure was developed and implemented at NDD to measure quality cost expenditures more effectively. The detailed procedure and explanation of pertinent quality cost activities can be found in the Appendices.

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