Monthly Progress Report for the Period August 1 to 31, 1958

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plants ln England and France. With the increasing de output of given designs and probably allow operation at higher polymer contents than orignally foreseen, thereby reducing the make-up requirements. The physical characteristics of the OMRE such as critical loading, temperature coefficient, and general stability appeared to be close to the predicted values. Radiation levels in the primary circuit area during full power operation appear to be so low that maintenance is possible during operation. The reactor has been run for a full month at 30% polymer concentration and is, at the time of this writing, brought to a still higher ... continued below

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Pages: 16

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Garbe, R. W. & Walchli, H. E. September 20, 1958.

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plants ln England and France. With the increasing de output of given designs and probably allow operation at higher polymer contents than orignally foreseen, thereby reducing the make-up requirements. The physical characteristics of the OMRE such as critical loading, temperature coefficient, and general stability appeared to be close to the predicted values. Radiation levels in the primary circuit area during full power operation appear to be so low that maintenance is possible during operation. The reactor has been run for a full month at 30% polymer concentration and is, at the time of this writing, brought to a still higher steady state percentage of breakdown products ln the coolant stream. No evidence whatsoever of fouling or precipitation has been observed. The reactor behaves in a routine manner in all respects and invites immediate application of the OMR principle to reactors for large scale ceniral stations. Final design on one 11.4 Mwe unit for the city of Piqua, Ohio, has now stanted. A short description is given of OMR power reactors. The use of magnetic jack mechanisms for control and safety rods provides a reactors top shield without penetrations, as well as an unpenetrated lower core vessel, still avoiding any interference from the control rods during fuel changing. The new finned-plate fuel element is mentioned as well as the use of a liquid pressurizing pump instead of nitrogen gas pressurization. It is conservatively predicted that the cost of organic liquid make-up for these designs will not contribute more than one half to one mill per kwh to the total power cost. In case operation at higher polymer concentrations appears practicable, this figure may even be lower. More detailed pricing informntion available now, has shown that the original cost estimate of around 0 per kw installed for a 150 Mwe plant can actually be realized without difficulty. In concluding it is remarked that in the Organic Moderated Reactor concept there now remain no basic problems to be solved any longer and a direct extrapolation to full size power plants is completely justified. (auth)

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Pages: 16

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  • Other Information: For Yankee Atomic Electric Co. Orig. Receipt Date: 31-DEC-58

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  • Report No.: YAEC-95
  • Grant Number: AT(30-3)-222, (SUBCONTRACT NO. 1)
  • DOI: 10.2172/4302606 | External Link
  • Office of Scientific & Technical Information Report Number: 4302606
  • Archival Resource Key: ark:/67531/metadc1023159

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  • September 20, 1958

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

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  • Jan. 17, 2018, 2:56 p.m.

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Garbe, R. W. & Walchli, H. E. Monthly Progress Report for the Period August 1 to 31, 1958, report, September 20, 1958; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc1023159/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.