[2B15-19] Tritium Behavior

4:35 PM - 4:50 PM JST(7:35 AM - 7:50 AM UTC)

[2B17] Hydrogen permeation behavior from high-temperature and high-pressure water to gas phase through Inconel tube

*Shogo Iwata¹, Kazunari Katayama¹, Kenta Akashi¹, Humiya Nakamura¹ (1. KYUSHU Univ.)

Keywords:

Tritium,Permeation,High-temperature and high-pressure water,Inconel600

In DT fusion reactors, high-temperature and high-pressure water expected to be used as a coolant. The evaluation of tritium transfer between the water is important for safety. In this study, the hydrogen permeation rate from high-temperature and high-pressure water through Inconel 600, which is a heat exchanger material, was investigated because hydrogen permeation has a similar behavior to tritium permeation. We use a double-tube permeation device consisting of Inconel 600 filled with pure water and SUS316 filled with Ar gas. Permeated hydrogen in the form of hydrogen molecule and water vapor was measured using a gas chromatograph and a dew point meter. hydrogen permeation started by the third day of heating and large of the permeated hydrogen was water vapor.