Aerosol experiments and measurement techniques on pool scrubbing-related source term issues

Lebel, L. S.*; Morreale, A. C.*; Freitag, M.*; Gupta, S.*; Allelein, H.-J.*; Klauck, M.*; Sun, Haomin; Herranz, L. E.*

Proceedings of 19th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-19) (Internet), 16 Pages, 2022/03

Experimental research on pool scrubbing of particles of radioactive materials

Akiba, Miyuki*; Hotta, Akitoshi*; Abe, Yutaka*; Sun, Haomin

Nihon Genshiryoku Gakkai Wabun Rombunshi, 19(1), p.1 - 15, 2020/02

https://doi.org/10.3327/taesj.J18.042

Tests at three different scales were conducted in order to understand the mechanisms of pool scrubbing. In the small-scale separate effect test, high resolution two-phase flow measurement techniques such as a high-speed camera, wire mesh sensor and PIV were applied to capture the behaviors of a single bubble and two-phase flow structures. In the large-scale integral effect test, the dependence of the aerosol removal efficiency on submergence and pool temperature was measured under constant pressure and depressurized conditions. To clarify relationships between individual phenomena and combined phenomena observed in two tests, the mid-scale integral effect test was undertaken.

Experimental investigation on dependence of decontamination factor on aerosol number concentration in pool scrubbing under normal temperature and pressure

Sun, Haomin; Machida, Shinichi*; Shibamoto, Yasuteru; Okagaki, Yuria; Yonomoto, Taisuke

Proceedings of 26th International Conference on Nuclear Engineering (ICONE-26) (Internet), 7 Pages, 2018/07

Thermal-hydraulics in a containment vessel of a unclear power plant during a severe accident

Sugimoto, Jun; Hashimoto, Kazuichiro; Yamano, N.; Maruyama, Yu

Nihon Genshiryoku Gakkai "Genshiro Kakuno Yoki Shinraisei Jissho Shiken Ni Kansuru Chosa Hokokusho, Heisei-5-Nendo", 0, p.3 - 192, 1994/00

no abstracts in English

Effect of pool scrubbing of insoluble aerosol in two-phase flow in a pipe

Hashimoto, Kazuichiro; Soda, Kunihisa; Uno, Seiichiro; ; *

Severe Accidents in Nuclear Power Plants,Vol. 2, p.77 - 86, 1988/00

no abstracts in English

Consideration of error reduction methods for aerosol decontamination factor measurement in pool scrubbing experiment

Sun, Haomin; Shibamoto, Yasuteru; Okagaki, Yuria; Yonomoto, Taisuke

no journal, , 

no abstracts in English

Present status of pool scrubbing research at JAEA

Sun, Haomin; Shibamoto, Yasuteru; Okagaki, Yuria; Yonomoto, Taisuke

no journal, , 

In order to improve a pool scrubbing model, a pool scrubbing experimental apparatus was constructed by Thermohydraulic Safety Research Group in Japan Atomic Energy Agency. We focus on detailed gas-liquid two-phase flow measurements and accurate aerosol measurements. The results will be reported.

Pool scrubbing experiment at JAEA

Sun, Haomin; Shibamoto, Yasuteru; Okagaki, Yuria; Yonomoto, Taisuke

no journal, , 

In order to improve a pool scrubbing model, an experimental study was conducted at Japan Atomic Energy Agency. We focus on the effect of two-phase flow characteristics on aerosol behavior and the aerosol measurement accuracy, which were not well considered in the previous studies. In our experiment, we investigated two-phase flow characteristics based on void fraction and interfacial area concentration by a four sensor probe measurement. In addition, we performed a calibration test for an aerosol dilution system to enhance the aerosol measurement accuracy and measure the decontamination factor by an aerosol spectrometer. As a result, we obtained a dependency of decontamination factor on aerosol concentration, which has been seldom reported. In order to make sure the reliability of our results, several tests were performed including a validation of the aerosol spectrometer measurement by another aerosol measuring instrument.

LP benchmark calculation in JAEA

Sun, Haomin; Shibamoto, Yasuteru

no journal, , 

no abstracts in English