In the pursuit of Indonesia’s ambitious energy goals, a recent study has shed light on the critical foundation work required for the country’s future nuclear power plants. Published in *Explorium: Bulletin of the Center for Nuclear Mineral Development*, the research, led by Dwi Haryanto from the Center for Research and Technology of Nuclear Minerals at the National Research and Innovation Agency (ORTN-BRIN), focuses on the geotechnical characterization of potential nuclear power plant sites using the seismic refraction method.
The study is a stepping stone towards Indonesia’s plan to establish a commercial-scale Nuclear Power Plant (NPP) by 2024, as outlined in Presidential Regulation number 38 of 2018. “Our goal was to determine the subsurface rock layer profile to estimate the work related to nuclear power plant foundations,” Haryanto explained. This information is crucial for ensuring the stability and safety of these massive energy projects.
The research team conducted geological mapping and acquired geophysical data to create a comprehensive model of the subsurface layers. Their findings revealed three distinct layers: a soil layer, a weathered igneous rock layer, and a fresh igneous layer. The compression wave velocity (Vp) in these layers ranged from 361 to 6,133 meters per second, with the fresh igneous rock layer exhibiting the highest velocities. The estimated density of this fresh igneous rock was calculated to be between 2.43 and 2.74 grams per cubic centimeter.
The implications of this research are significant for the energy sector. Understanding the subsurface structure of potential nuclear power plant sites can inform better foundation designs, reduce construction risks, and ultimately lower the costs of these large-scale projects. As Indonesia moves forward with its plans to diversify its energy mix, this study provides a vital piece of the puzzle.
Haryanto emphasized the importance of these findings, stating, “The modeling results can show the depth and structure of the subsurface layer of fresh igneous rock that can be the foundation of nuclear power plants.” This knowledge will be invaluable as Indonesia seeks to balance its energy needs with environmental concerns and economic realities.
As the world watches Indonesia’s progress in the energy sector, this research serves as a testament to the country’s commitment to leveraging advanced technologies and scientific methods to achieve its goals. With the insights gained from this study, Indonesia is better positioned to navigate the complexities of nuclear power plant development, paving the way for a more sustainable and energy-secure future.