Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
Online ISSN : 2186-5256
Print ISSN : 0004-7120
ISSN-L : 0004-7120
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Volume 11, Issue 5
Displaying 1-8 of 8 articles from this issue
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  • Study on Removal of Iodine from Atmosphere by Spray, (III)
    Removal of Organic Iodides by Spray
    Yukinori NISHIZAWA, Shigeo OSHIMA, Tatsuo MAEKAWA
    1969 Volume 11 Issue 5 Pages 262-267
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.262
    JOURNAL FREE ACCESS
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    pressure and sprayed with water at the same temperature as the vessel; the other experiment was with the vessel filled with saturated steam at 100°C and 150°C and sprayed with cold water. The rate of removal of the organic iodides was determined by analyzing the concentration in the gas phase by means of gas-liquid chromatography.
    The washout rate can be expressed by a first order equation in the first experiment, and the second resulted in data nearly consistent with the curve calculaed from rate constants obtained in the first experiment. The rate of removal of methyl iodide by spray increased with decreasing temperature and in proportion to the spray rate.
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  • Study on the Measurement of Void Fraction by Parallel Type Probe
    Yoshifumi KITAYAMA, Keishi KAWABATA
    1969 Volume 11 Issue 5 Pages 267-271
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.267
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    Measurements of void fraction by probe method has been the subject of a number of recent reports, which have highlighted certain problems remaining to be solved. In the present study, an attempt has been made to improve the single type probe, which resulted in the conclusion that use of the parallel type probe should have many merits for the measurement of local void fraction.
    It was found that a suitable choice of the distance separating the parallel needles permits measurement of the void fraction in water of purity higher than with the other methods.
    The values of the distribution of void fraction measured by this method agree well with those obtained with single and co-axial type probes.
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  • Forced Convective Boiling Heat Transfer to Diphenyl in Concentric Annuli
    Itaru MICHIYOSHI, Tsuyoshi NAKAJIMA, Masashi INOUE, Yutaka ITO
    1969 Volume 11 Issue 5 Pages 272-278
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.272
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    This paper deals with forced convective boiling heat transfer to diphenyl flowing upwards under atmospheric pressure through two vertical concentric annuli 1m long and of effective diameters measuring either 11.4 or 18.0mm. The inlet temperature of diphenyl was 215°-245°C, the Reynolds number 1.9×104-5.7×104, and the heat flux was less than 4.2×105kcal/mm2·hr.
    Measurements were made of the turbulent heat transfer in the non-boiling region, the heat flux at incipient boiling, the hysteresis of boiling heat transfer, the relationship between boiling heat transfer and the flow pattern of two-phase flow, the effects of fouling, and the burnout heat flux. Correlations of experimental data and some discussions are presented on these items.
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  • Summary Survey of Detection and Location of Failed Fuel Elements
    Keiichi MOCHIZUKI
    1969 Volume 11 Issue 5 Pages 279-291
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.279
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    A general survey is presented on the detection and location of failed fuel elements. Three major methods are reviewed-i.e. direct measurement of β- and γ-activities of fission products, delayed neutrons and precipitation. For the location of failed elements, the normal sampling method and also other new approaches, such as by neutrons flux tilting, are covered, with particular reference to utilization in fast breeder reactors. The review further extends to non-destructive methods for detecting spent fuel failure. Finally, a discussion is given on detection sensitivity, as well as points to be considered in the design of detecting and locating systems.
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  • Appraisal Study of Reported Operating Experiences of Various Fast Breeder Reactors in the World, (II)
    Enrico Fermi Atomic Power Plant
    Hiroshi NAKAGAWA, Tsuneo FUTAMI
    1969 Volume 11 Issue 5 Pages 292-300
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.292
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    As a sequel to the precedent report (Vol. 11, No.4, this Journal)(34), the present article reviews and evaluates the operating experience of the Enrico Fermi APP.
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  • On Heavy-Water Critical Assembly
    Hajime SAKATA
    1969 Volume 11 Issue 5 Pages 301-305
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.301
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    A brief description is given of the structure of the heavy-water critical assembly (DCA) and of plans for reactor physics experiments. This assembly is utilized to obtain experimental data on physical problems of highly heterogeneous and plutonium fuel loaded systems for the advanced thermal reactor (ATR), now being developed as part of the national power reactor development program in Japan. The particular aims of the DCA include the realization of an experimental bare core and enhancement of the accuracy of experiments. The DCA is now under construction, and is due to be critical December of 1969.
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  • Fukushima Nuclear Power Station, Tokyo Electric Power Co
    [in Japanese]
    1969 Volume 11 Issue 5 Pages 306-314
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.306
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 11 Issue 5 Pages 315-316
    Published: May 30, 1969
    Released on J-STAGE: April 19, 2010
    DOIhttps://doi.org/10.3327/jaesj.11.315
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