TY - JOUR
T1 - Suitability of a simple sampler using a brass bar for gaseous tritiated water measurement
AU - Nakayama, Masato
AU - Hara, Masanori
AU - Kobayashi, Fumihiko
AU - Oyama, Sachiko
AU - Ota, Masashi
AU - Sakajo, Takaharu
AU - Nakagawa, Hiroo
AU - Kondo, Masato
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11
Y1 - 2021/11
N2 - A simple sampler using a brass bar and liquid nitrogen for measuring tritium in workplaces was designed, and the suitability of the device was evaluated. The brass bar was arranged to allow its end to touch liquid nitrogen in a stainless-steel bottle, and the water vapor in the air became saturated and condensed on the surface of the brass bar. The condensation was defrosted and the tritium in the defrosted water was analyzed by a liquid scintillation counter. The data obtained with the new sampler were compared with the data obtained with a conventional modified oxidation–liquid collection sampler. The relative ratios of the data obtained with the new sampler to the data obtained with the conventional sampler were 0.64–1.54 (average 0.99, relative standard deviation 23.0%), and the new sampler showed high usefulness in working environment measurement of tritium. The data obtained with the new sampler, as the conventional sampler, showed the seasonal effect and the position dependence in the room. Thus, the applicability of the new sampler for working environment measurement of tritium was confirmed.
AB - A simple sampler using a brass bar and liquid nitrogen for measuring tritium in workplaces was designed, and the suitability of the device was evaluated. The brass bar was arranged to allow its end to touch liquid nitrogen in a stainless-steel bottle, and the water vapor in the air became saturated and condensed on the surface of the brass bar. The condensation was defrosted and the tritium in the defrosted water was analyzed by a liquid scintillation counter. The data obtained with the new sampler were compared with the data obtained with a conventional modified oxidation–liquid collection sampler. The relative ratios of the data obtained with the new sampler to the data obtained with the conventional sampler were 0.64–1.54 (average 0.99, relative standard deviation 23.0%), and the new sampler showed high usefulness in working environment measurement of tritium. The data obtained with the new sampler, as the conventional sampler, showed the seasonal effect and the position dependence in the room. Thus, the applicability of the new sampler for working environment measurement of tritium was confirmed.
KW - Brass bar
KW - Cooling condensation
KW - Liquid nitrogen
KW - Liquid scintillation counter
KW - Working environment measurement
UR - http://www.scopus.com/inward/record.url?scp=85108401448&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2021.112743
DO - 10.1016/j.fusengdes.2021.112743
M3 - 学術論文
AN - SCOPUS:85108401448
SN - 0920-3796
VL - 172
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
M1 - 112743
ER -