[2C09-14] AI

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[2C14] Development of JPHAST: An All-Japan Open-Source Platform for Geochemical Analysis(3) Verification of code performance for groundwater–rock reaction systems

*Hisao Satoh¹, Tsuneyuki Maemura⁴, Takahiro Nishihara², Masahiko Nakase², Tomohiro Okamura³ (1. JNFL, 2. ISCT, 3. NEUChain, 4. DCNE)

Keywords:

waste disposal,groundwater-rock reaction

JPHAST, a geochemical analysis code initiated in 2026, is an opensource platform envisioned for All-Japan development and utilization. It enables efficient three-dimensional simulations for a wide range of applications, including safety assessment of geological disposal. With the support of artificial intelligence, not only are computational efficiency, machine learning, and the management of multi-condition inputs and outputs enhanced, but the overall workflow-from code development and manual generation to benchmark validation and reporting-is also streamlined. JPHAST is expected to be applicable to a range of purposes, from academic research to repository design and performance assessment. In this part, we present the latest analysis results for a groundwater-rock reaction system to verify the code performance.