Study of aerosol diffusion behaviors in dismantling nuclear facilities (Contract research)

Shimada, Taro; Tachibana, Mitsuo; Yanagihara, Satoshi

JAERI-Tech 2001-060, 44 Pages, 2001/09

JAERI-Tech-2001-060.pdf:5.11MB

To evaluate aerosol diffusion behaviors under dismantling of nuclear facilities, plasma arc cuttings were conducted in the enclosure. The flow of air and high temperature gas in the enclosure were visualized, and the temperature distributions in the enclosure and the aerosol number and weight density in air of outlet flow were measured in the experiments. As a result, it was confirmed that ascending high temperature gas flow produced by the plasma arc is corresponded with aerosol diffusion behavior during cutting. It was also confirmed that after completing the cuttings the aerosol tends to fall due to decreasing of flow velocity of high temperature gas and the aerosol which reaches near the floor is resuspended by relatively high velocity exhaust flow.

Diffusion behaviors of aerosol particles in dismantling nuclear facilities

; Tachibana, Mitsuo; Yanagihara, Satoshi

Proceedings of 7th International Conference on Nuclear Engineering (ICONE-7) (CD-ROM), 9 Pages, 1999/00

no abstracts in English