Chemistry of radioactive nitrogen in BWR primary system.

DOI

抄録

Numerical model calculations and evaluation of plant experience with chemical behaviors of radioactive nitrogen (13N and 16N) in BWR primary systems have suggested the followings :<BR>(1) Calculated results showed that the major species of radioactive nitrogen released to the turbine system was nitrogen mono-oxide.<BR>(2) Based on 13N measurement in the main steam of a BWR, 85% of 13N was found to be anion. This result supported the prediction above.<BR>(3) Calculated results showed that chemical behaviors of 13N and 16N were not the same because of the difference in half-lives of 13N and 16N; 13N was easily accumulated in the core by-pass channels where the residence time of water was several times longer than in fuel channels, but the main source of 16N was the boiling channels in the reactor core.<BR>(4) Nitrogen-16 released to the main steam line could be decreased by lowering the hydrogen atom concentration in the water ; typically to around 1/10 of the normal level by the addition of nitrous acid of 1×10-6M at the reactor core inlet.

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詳細情報

  • CRID
    1390282679073982464
  • NII論文ID
    130000826611
  • DOI
    10.3327/jnst.26.844
  • COI
    1:CAS:528:DyaL1MXlvVaktrs%3D
  • ISSN
    18811248
    00223131
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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