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All Journal Jurnal Pengembangan Energi Nuklir
Yuni Indrawati
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Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Konfigurasi Batuan Dasar Daerah Sekitar Rencana Pembangunan Reaktor Daya Eksperimental Serpong Hadi Suntoko; Marjiyono - Marjiyono; Imam Setiadi; Heni Susiati; Yuni Indrawati; Theo Alvin Ryanto
Jurnal Pengembangan Energi Nuklir Vol 22, No 1 (2020): Juni 2020
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2020.22.1.5967

Abstract

Proses pemilihan tapak diperlukan informasi geologi bawah permukaan yang merupakan aspek penting terutama berkaitan dengan daya dukung lapisan/tanah. Informasi kondisi batuan dasar yang ditunjukkan oleh nilai kecepatan gelombang geser diperlukan untuk penempatan pondasi bangunan. Penerapan kombinasi metode mikrotremor array dan single station adalah untuk mengetahui kedalaman batuan dasar lebih rinci secara lateral berdasarkan nilai frekuensi resonan yang dilakukan untuk memodelkan kondisi bawah permukaan daerah Puspiptek Serpong. Tujuan penelitian adalah memodelkan batuan bawah permukaan di tapak RDE berdasarkan profil kecepatan gelombang geser secara vertikal dengan 10 titik ukur. Pengolahan data menggunakan perangkat lunak Geopsy dan validasi data mikrotremor array menggunakan data N-SPT di tapak. Hasil perhitungan menunjukkan hingga kedalaman 64 m diperoleh model dua lapis batuan dengan nilai kecepatan bervariasi secara lateral maupun vertikal. Lapisan permukaan mempunyai kisaran nilai kecepatan gelombang geser antara 150 m/detik hingga 360 m/detik pada kedalaman sekitar 19 m, sedangkan lapis kedua yang dianggap sebagai batuan dasar di daerah ini mempunyai kecepatan gelombang geser berkisar antara 365 m/detik hingga 900 m/detik pada kedalaman sekitar 60 m.
Sediment Thickness Estimation in Serpong Experimental Power Reactor Site Using HVSR Method Theo Alvin Ryanto; Eko Rudi Iswanto; Yuni Indrawati; Abimanyu BW Setiaji; Hadi Suntoko
Jurnal Pengembangan Energi Nuklir Vol 22, No 1 (2020): Juni 2020
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2020.22.1.5949

Abstract

A study about sediment thickness mapping was conducted in Serpong Experimental Power Reactor Site. This reactor is planned to be built in a high seismic activity area. Sediment thickness is one of many factors that could affect the site response. A high sediment deposit could amplify and prolong the earthquake waves. This condition could make the reactor building more vulnerable to seismic hazard. The sediment thickness was estimated using the microtremor HVSR method. The parameter used for sediment thickness calculation was obtained from the borehole and cross-hole seismic survey and was tested to ensure that the chosen parameter and the method were accurate. The deviation found in the borehole data was also calculated to determine the accuracy level of the calculation. The current planned location for the reactor is in a relatively low sediment deposit area with 8.8 m of thickness, however there is an area, west of the current location that might be a better location for the reactor based on the result of this study.
Co-Authors Abimanyu BW Setiaji Eko Rudi Iswanto Hadi Suntoko Hadi Suntoko Heni Susiati Imam Setiadi Marjiyono - Marjiyono Theo Alvin Ryanto Theo Alvin Ryanto