MAPPING OF THE LUMUT BALAI GEOTHERMAL POWER PLANT (GPP)

• Main Author: Makarim, Hafidh
• Format: Final Project
• Language: Indonesia
• Subjects: Penyajian grafis permukaan bumi dan luar bumi
• Online Access: https://digilib.itb.ac.id/gdl/view/82111
• Institution: Institut Teknologi Bandung

The Geothermal Power Plant (PLTP) owned by PT X PLTP was built with less than ideal topographic and geological conditions, namely by clearing mountainous land This makes it vulnerable to shifts in the ground surface. In addition, various processes at PLTP cause vibrations which can increase the risk of shifting. The PLTP which is the object of study for this capstone project, has crucial objects, namely connecting pipes that connect the electricity flow and sheet piles that hold the ground surface. If the object shifts to the point of damage, then the production of electrical power can be disrupted, so efforts are needed to monitor the shifts that occur. This capstone project has three objectives, namely to determine the value of the vector value of the shift speed of the benchmark point, to detect the shift of crucial (connecting pipe and ground beam), and conduct 3D modeling of the Lumut Balai PLTP area. In this project, Terrestrial Laser Scanner (TLS) and Global Navigation Satellite System (GNSS) technology are used. The method used to obtain the vector value of the benchmark point shift velocity is to regress the GNSS coordinate data linearly from different time periods. The method used to obtain the shift value of the crucial object is with point cloud data which is then processed using point cloud processing software starting from the registration process, cleaning, georeferencing, to shift detection using a method called Multiscale Model to Model Cloud Comparison (M3C2). The method of making 3D models is carried out by picking points from cloud data points. Then, the object will be formed according to the selected point. The results of this capstone project show there are benchmark points that are indicated to have shifted in the horizontal direction and in the vertical direction. Meanwhile, the results of the analysis of the shift of vital objects with point cloud data show that the connecting pipe object has experienced a significant shift in the lower right part of the connecting pipe. Meanwhile, the ground beam did not experience significant changes. Finally, a 3D model was produced from the Lumut Balai PLTP area with a Level of Detail (LoD) of 2.