Chemistry of radioactive nitrogen in BWR primary system.
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- IBE Eishi
- Energy Research Laboratory, Hitachi, Ltd.
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- KARASAWA Hidetoshi
- Energy Research Laboratory, Hitachi, Ltd.
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- NAGASE Makoto
- Energy Research Laboratory, Hitachi, Ltd.
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- ENDO Masao
- Energy Research Laboratory, Hitachi, Ltd.
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- UCHIDA Shunsuke
- Energy Research Laboratory, Hitachi, Ltd.
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- UTAMURA Motoaki
- Energy Research Laboratory, Hitachi, Ltd.
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- MIKI Minoru
- Hitachi Works, Hitachi, Ltd.
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.
収録刊行物
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- Journal of Nuclear Science and Technology(日本原子力学会英文論文誌)
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Journal of Nuclear Science and Technology(日本原子力学会英文論文誌) 26 (9), 844-851, 1989
一般社団法人 日本原子力学会
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詳細情報
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- CRID
- 1390282679073982464
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- NII論文ID
- 130000826611
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- COI
- 1:CAS:528:DyaL1MXlvVaktrs%3D
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- ISSN
- 18811248
- 00223131
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可