| Popis: |
Completion of the design of the electrical circuitry brings the design phase of the work to a virtual close. Minor design work remaining involves the air preheater, steam-CO/sub 2/ preheater, and sampling systems. Contracts were negotiated with a local firm for remodeling the support structure and increasing the exhaust stack height by 20 ft and with a Portland concern for fabrication of all pipe and equipment which must be alonized. The regeneration and extraction columns and trace heaters for which orders were placed earlier were received in good condition. In addition the Spectra Physics SP-4000 Central Processor (Integrator), SP-4050 Printer-Plotter, and two SP-4020 Data Interface Units to be utilized in control of gas chromatographs have been received. A theoretical analysis of the effect of an increase in pressure to 20 atm on the number of extraction and regeneration stages required is in progress. This process has so much flexibility in choice of salt composition and flow that little if any change in staging seems indicated. The complexity of this project has made it necessary to have recourse to planning techniques for effective management. A Precedence Diagram has been constructed to assist in control of scheduled work. Certain complex tasks identifiedmore » in the Precedence Diagram have been diagrammed in greater detail by means of PERT techniques. Numerous minor tasks, e.g.,preparation of bid packages, supervision of contract awards, preparation of numerous small procurement orders (gaskets, nuts, bolts, small hardware), equipment modification, and site preparation were completed.« less |
