[2B05-08] Design and technology options

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[2B06] A Study on Manufacturing and Assembly Technology Options for PEM Method in Geological Disposal(1) Model Test Program to verify the Effects of Perforated Structure and Filter Layer of the Advanced PEM

*Masakuni Tsuji¹, Takayuki Abe¹, Ryo Yasuda¹, Ryoji Yahagi², Yuta Ichikawa², Mitsunobu Okihara² (1. RWMC, 2. Shimizu Corporation)

Keywords:

high-level radioactive waste,geological disposal,PEM method,advanced PEM,perforated steel handling shell for PEM,infiltration test

In the advanced PEM for geological disposal, a perforated steel handling shell (11% perforation rate) and a filter layer are introduced to ensure uniform groundwater infiltration. This report presents a model test apparatus developed to evaluate the effects of these specifications and gap conditions between the shell and buffer material on infiltration behavior. The apparatus has a fixed hole arrangement, accommodates multiple cases with different gap conditions and filter layer configurations, and can be disassembled and reassembled for reuse. Water is infiltrated from the top, and the buffer material is sampled at specified time intervals to obtain moisture content distribution. The infiltration behavior of each case will be compared to confirm the effects of the perforated structure and filter layer.