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Seismic Risk Analysis of the Serpong Nuclear Complex and the RSG-GAS Reactor Using Microseismic Methods

Atom Indonesia · Vol. 51 No. 2 (2025) · hlm. 145–163

DOI
10.55981/aij.2025.1596
ISSN
2356-5322, 0126-1568
Terbit
2025-07-22
Penerbit
National Research and Innovation Agency
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc-sa/4.0

Abstrak

The G.A. Siwabessy research reactor (RSG-GAS), located in the Serpong Nuclear Complex (SNC), is a critical component of Indonesia's nuclear research infrastructure. This study aims to assess the seismic safety of the RSG-GAS reactor and its surrounding complex using microseismic methods, specifically the Horizontal-to-Vertical Spectral Ratio (HVSR) and Floor Spectral Ratio (FSR) techniques. HVSR measurements conducted across the B. J. Habibie Science and Technology Area (KST) revealed an average natural frequency (f₀) of 3.49 Hz (range: 2.84-4.43 Hz), amplification factors (A₀) averaging 2.84 (range: 2.11-4.88), and seismic susceptibility indices (Kg) averaging 2.72 (range: 1.34-4.39). The HK9 site, positioned 124 meters from the reactor, exhibited lower-than-average values, indicating reduced seismic vulnerability in the immediate reactor vicinity. FSR analysis was conducted to evaluate key structural parameters, including the Resonance Index (IR), inter-level deviation (γⱼ), peak ground acceleration (αbⱼ), and Building Vulnerability Index (Ktgⱼ). Most IR values fell within the medium-risk range (20.07 %-22.63 %), while one measurement point recorded 3.98 %, indicating high resonance risk. Inter-level deviations remained within acceptable safety thresholds; however, peak ground acceleration values exceeded critical limits at several levels, most notably at FU8 where 272.63 gal was recorded at -6.5 m elevation-significantly surpassing established safety standards. Several Building Vulnerability Index values also exceeded recommended safety limits. The findings demonstrate that while the RSG-GAS facility generally exhibits low-to-moderate seismic amplification and structural vulnerability, targeted structural reinforcements are essential at critical locations, particularly at the FU8 level. This study provides a comprehensive framework for enhancing seismic resilience of nuclear facilities in seismically active regions and contributes to the long-term safety assessment protocols for Indonesia's nuclear infrastructure.

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22 penulis · 61 tautan kepenulisan bersama · 46 lintas organisasi

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  • National Research and Innovation Agency
  • Indonesian Institute of Sciences
  • Meteorological, Climatological, And Geophysical Agency
  • Politeknik Teknologi Nuklir Indonesia
  • National Nuclear Energy Agency of Indonesia
  • Japan Atomic Energy Agency
  • Universitas Gadjah Mada
  • Organisasi lain
  • Organisasi berbeda
  • Organisasi sama
  • Afiliasi tidak diketahui
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Tampilkan sebagai tabel
Rekan penulisOrganisasiArtikel bersama
S. SukarmanPoliteknik Teknologi Nuklir Indonesia1
Gilang SeptawijayaPoliteknik Teknologi Nuklir Indonesia1
Syaiful BakhriNational Nuclear Energy Agency of Indonesia1
Kunihiko NabeshimaJapan Atomic Energy Agency1
Kuriko KudoKyushu University1
Kuniyoshi TakamatsuJapan Atomic Energy Agency1
A. SetiawanInternational Potato Center1
R. SetiawanNational Research and Innovation Agency1
Mersi KurniatiIPB University1
Dadong IskandarNational Nuclear Energy Agency of Indonesia1
Hendra Adhi PratamaNational Research and Innovation Agency1
Lina HandayaniIndonesian Institute of Sciences1
Syuhada SyuhadaIndonesian Institute of Sciences1
Nugroho Dwi HanantoIndonesian Institute of Sciences1

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Sumber metadata: OAI-PMH (metadata jurnal) https://atomindonesia.brin.go.id/index.php/aij/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Seismic Risk Analysis of the Serpong Nuclear Complex and the RSG-GAS Reactor Using Microseismic Methods</dc:title>
	<dc:creator>Satriyo, A.</dc:creator>
	<dc:creator>Suryanto, W.</dc:creator>
	<dc:creator>Anggono, T.</dc:creator>
	<dc:creator>Subekti, M.</dc:creator>
	<dc:creator>Sucipta, S</dc:creator>
	<dc:creator>Jatnika, J.</dc:creator>
	<dc:creator>Swastikarani, R.</dc:creator>
	<dc:creator>Sugianto, N.</dc:creator>
	<dc:subject xml:lang="en-US">Serpong Nuclear Complex (SNC); Reactor RSG-GAS; Horizontal to Vertical Spectral Ratio (HVSR); Floor Spectral Ratio (FSR); Peak Ground Acceleration (PGA)</dc:subject>
	<dc:description xml:lang="en-US">The G.A. Siwabessy research reactor (RSG-GAS), located in the Serpong Nuclear Complex (SNC), is a critical component of Indonesia's nuclear research infrastructure. This study aims to assess the seismic safety of the RSG-GAS reactor and its surrounding complex using microseismic methods, specifically the Horizontal-to-Vertical Spectral Ratio (HVSR) and Floor Spectral Ratio (FSR) techniques. HVSR measurements conducted across the B. J. Habibie Science and Technology Area (KST) revealed an average natural frequency (f₀) of 3.49 Hz (range: 2.84-4.43 Hz), amplification factors (A₀) averaging 2.84 (range: 2.11-4.88), and seismic susceptibility indices (Kg) averaging 2.72 (range: 1.34-4.39). The HK9 site, positioned 124 meters from the reactor, exhibited lower-than-average values, indicating reduced seismic vulnerability in the immediate reactor vicinity. FSR analysis was conducted to evaluate key structural parameters, including the Resonance Index (IR), inter-level deviation (γⱼ), peak ground acceleration (αbⱼ), and Building Vulnerability Index (Ktgⱼ). Most IR values fell within the medium-risk range (20.07 %-22.63 %), while one measurement point recorded 3.98 %, indicating high resonance risk. Inter-level deviations remained within acceptable safety thresholds; however, peak ground acceleration values exceeded critical limits at several levels, most notably at FU8 where 272.63 gal was recorded at -6.5 m elevation-significantly surpassing established safety standards. Several Building Vulnerability Index values also exceeded recommended safety limits. The findings demonstrate that while the RSG-GAS facility generally exhibits low-to-moderate seismic amplification and structural vulnerability, targeted structural reinforcements are essential at critical locations, particularly at the FU8 level. This study provides a comprehensive framework for enhancing seismic resilience of nuclear facilities in seismically active regions and contributes to the long-term safety assessment protocols for Indonesia's nuclear infrastructure.</dc:description>
	<dc:publisher xml:lang="en-US">National Research and Innovation Agency</dc:publisher>
	<dc:contributor xml:lang="en-US">DBR BRIN</dc:contributor>
	<dc:date>2025-07-22</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
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	<dc:identifier>https://atomindonesia.brin.go.id/index.php/aij/article/view/1596</dc:identifier>
	<dc:identifier>10.55981/aij.2025.1596</dc:identifier>
	<dc:source xml:lang="en-US">Atom Indonesia; Vol 51, No 2 (2025): AUGUST 2025; 145-163</dc:source>
	<dc:source>2356-5322</dc:source>
	<dc:source>0126-1568</dc:source>
	<dc:source>10.55981/aij.v51i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/view/1596/1175</dc:relation>
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	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/downloadSuppFile/1596/2743</dc:relation>
	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/downloadSuppFile/1596/2744</dc:relation>
	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/downloadSuppFile/1596/2745</dc:relation>
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	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/downloadSuppFile/1596/2748</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2025 Atom Indonesia</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc-sa/4.0</dc:rights>
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