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Author:
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ISBN:
Category :
Languages : en
Pages : 42
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Author:
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ISBN:
Category :
Languages : en
Pages : 42
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Author: A.L. Boch (Project coordinator.)
Publisher:
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Category :
Languages : en
Pages : 36
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Author:
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ISBN:
Category :
Languages : en
Pages :
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During the report period, the nature of the ORNL supporting activities gradually changed, reflecting the progress in the conetruction of the N.S. Savannah. Design reviews continued to require considerable attention. The Inspection Engineering Dept. of the Jab. continued to act as an inspection agency for the ALC, witnessing inspections and tests during fabrication of components of the nuclear reactor system. An enviromnental analysis was made of safeguard aspects of operation of the N.S. Savannah at the NYSC site in Cannden. A study of the safety response of the reactor on the ORNL Analog Computer further defined the important role of the Doppler coefficient in controlling reactivity excursions. Health physics aspects of the operation were studied. Limited waste disposal studies indicated that sea disposal of exhausted demineralizer resins may be facilitated by casting the radioactive resins into concrete. Installation of a pressurized-water in-pile test loop in the ORR neared completion. The neutron flux distribution in the loop was determined by experimental measurements in a nuclear mockup of the in-pile section. Metallurgical activities included nil-ductility testing of steel from the reactor vessel, chemical analyses of primary system components, and investigations of the properties of electroless - nickel brazed joints. Limited fabrication studies were carried out on advanced fuel concepts which may have merit for future cores of the Savannah Reactor. Most of the latter effort was applied to swaged UO/sub 2/ rod-type elements. A series of physics calculations is being carried out in an attempt to evaluate the possible advantages of using Zircaloy instead of stainless steel as the structural material for Core III. Use of Zircaloy instead of stainless steel for the fuel element cans was found to result in a marked reduction in enrichnnent for a given initial cold reactivity. (For preceding period see ORNL-2657.) (W.D.M.).
Author: H. C. McCurdy
Publisher:
ISBN:
Category :
Languages : en
Pages : 67
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Author: Oak Ridge National Laboratory
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ISBN:
Category : Nuclear reactors
Languages : en
Pages : 72
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Author: H. C. McCurdy
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Progress is reported on general support of the NS Savannah, operation of the pressurized-water in-pile loop, and advanced core development. A shield survey, iodine adsorption studies, a bioassay development program, preparation of replacement control rod drives, irradiation testing of pressure-vessel steel, a thermal insulation investigation, and an analysis of primary system components for gamm-emitting elements were carried out in the NS Savannah program. Water- chemistry studies in the pressurized-water in-pile: loop were made to determine the specific activities and the chemical compositions of filterable and nonfilterable impurities in the loop water. Fuel development and irradiation tests and core I lifetime studies were carried out in the NS Savannah advanced core development. (M.C.G.).
Author:
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ISBN:
Category : Energy development
Languages : en
Pages : 42
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Author:
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Category :
Languages : en
Pages :
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A survey of the, N. S. Savannah reactor shield was carried out during the report period. The results showed that the shield effectively meets design specifications. Tests of 12 removal by a charcoal unit in the N.S. Savannah reactor emergency ventilation system using 80 to 90% water-saturated air showed a unit efficiency of 99.86 plus or minus 0.07% at the 95% confidence level. Simplified procedures were devised for using shipboard equipment to screen personnel suspected of having body burdens of radioactive materials. Other work in connection with N.S. Savannah is reported on accidental activity release, port survey visits, and physics calculations. Continued trouble-free operation of the ORR pressurized-water loop is reported. Emphasis during the period was placed on water-borne radioactive contaminants. Advanced core developmental work was devoted to physics calculations, fuel development, fuel irradiation and postirradiation examinations, and evaluation of nonsintered UO/sub 2/ fuel for N.S. Savannah. (J.R.D.).
Author: United States. Dept. of Commerce. Office of Technical Services
Publisher:
ISBN:
Category :
Languages : en
Pages : 600
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