Japanese Journal of Health Physics
Online ISSN : 1884-7560
Print ISSN : 0367-6110
ISSN-L : 0367-6110
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Volume 6, Issue 4
Displaying 1-5 of 5 articles from this issue
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  • Day-to-day Variation of Urine 90Sr as Determined from Urine Calcium
    A Cause of Error in the Estimation of Body 90Sr by Urinalysis
    Minoru FUJITA, Junko IWAMOTO, Akira YABE, Jun AKAISHI
    1971 Volume 6 Issue 4 Pages 171-175
    Published: 1971
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.6.171
    JOURNAL FREE ACCESS
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    Dary-to-day variation of urine 90Sr may produce error in the assessment of body 90Sr by urinalysis. Based on the good correlation between urine 90Sr and Ca, the range of the day-to-day variation of urine 90Sr was inferred from that of calcium, which was obtained from the analysis of about 50 to 100 urine samples per person in seven volunteers. From the frequency dstribution curves of urine calcium, it was concluded that 90per cent of the daily urine 90Sr would be involved in the range from 0.4 to 2.0 times the mean value. Therefore, if the assessment of body 90Sr is made from only one urinary excretion level, the estimated body burden will probably be in the range between 0.4 and 2 times the correct value.
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  • Monitoring of Gaseous Krypton-85 Released from the Fuel Reprocessing Test Plant of JAERI
    Nobuyuki SATO, Takeshi OHNISHI, Kentaro MINAMI, Futao NIINO, Masafusa ...
    1971 Volume 6 Issue 4 Pages 177-181
    Published: 1971
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.6.177
    JOURNAL FREE ACCESS
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    The Fuel Reprocessing Test Plant at JAERI was operated during the period of 1968-1969 to gain experiences of the fuel reprocessing.
    Fuel elements reprocessed were irradiated in the JRR-3 reactor up to about 700MWD/ton and cooled for 87-300 days. Therefore, krypton-85 is the most dominant radionuclide in the long lived gaseous fission products and the major part of krypton-85 in the fuel is discharged from the stack to atmosphere in the process of uranium dissolution.
    The purpouse of the paper is to describe the measured results of gaseous krypton-85 released in each chemical processing and also to discuss the performance of krypton-85 gas monitor, in particular the relationship of counting rate and the inner pressure of the krypton-85 sampler. The measured activity of krypton-85 released was in fairly good agreement with the calculated inventory.
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  • Monitoring of Tritium Discharged from the Fuel Reprocessing Test Plat of JAERI
    Kouzo WATANABE, Takeshi OHNISHI, Kentaro MINAMI, Nobuyuki SATO, Futao ...
    1971 Volume 6 Issue 4 Pages 183-187
    Published: 1971
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.6.183
    JOURNAL FREE ACCESS
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    The Fuel Reprocessing Test Plant in JAERI was operated during the period of 1968-1969 to gain experiences of the fuel reprocessing. The fuel elements reprocessed were irradiated in the JRR-3 up to about 700MWD/ton and cooled for 87-300 days.
    Tritium is produced by ternary fission and is one of the important nuclides to be monitored during the reprocessing of the highly irradiated fuels, because it is easily released into the off-gas line and difficult to be trapped before discharging to the atmosphere.
    In this paper, the results of tritium monitoring at the stack are described. It was found that tritium discharged from the stack during the reprocessing was about 1% of the total inventory and its concentration in air was about 1×10-8μCi/cm3.
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  • Decontaminating Efficiency of NaClO for Various Skin Contaminations
    Shingo TASHIRO
    1971 Volume 6 Issue 4 Pages 189-191
    Published: 1971
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.6.189
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  • [title in Japanese]
    [in Japanese]
    1971 Volume 6 Issue 4 Pages 192-193
    Published: 1971
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.6.192
    JOURNAL FREE ACCESS
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