[1J06-08] Supercritical-Water-Cooled Reactor

[1J07] Research on fundamental technology for SCWR based on RISA

12th report, Wettability observation in capillary tubes at subcritical condition using neutron radiography

*Wilson Susanto¹, Tomonori Ihara¹, Tatsuya Hazuku¹, Shinichi Morooka², Daisuke Ito³, Sho Kano⁴ (1. Tokyo University of Marine Science and Technology, 2. Waseda University, 3. Kyoto University, 4. The University of Tokyo)

Keywords:SCWR, RISA, Wettability, Capillary action, Neutron radiography

In order to evaluate the effect of gamma-ray irradiation on metal surface wettability under a subcritical condition with a temperature of 320 centigrade and pressure of 21 MPa, a capillary action of a nitrogen gas-water system in small pipes with inner-diameters ranging from 0.5 mm to 1.8 mm were observed using a neutron radiography.