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ANALISA KERUNTUHAN BENDUNGAN BINTANG BANO PROV. NUSA TENGGARA BARAT DENGAN MENGGUNAKAN PROGRAM BOSS DAMBRK Ramadhan, Yudhistira Akbar Zulfikar; Asmaranto, Runi; Juwono, Pitojo Tri
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 2, No 1 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: Bendungan Bintang Bano terletak di Desa Bangkatmonte, Kecamatan Brang Rea, Kabupaten Sumbawa Barat, Provinsi Nusa Tenggara Barat. Keruntuhan Bendungan Bintang Bano dapat terjadi dikarenakan overtopping dan piping. Dari analisis hidrologi nilai debit inflow kala ulang PMF sebesar 2625,887 m3/det. Dari simulasi yang dilakukan dengan program BOSS Dambrk, keruntuhan akibat overtopping pada Bendungan Bintang Bano memiliki luas genangan keruntuhan Bendungan Bintang Bano sebesar 5714,14 Ha dengan desa terdampak sejumlah 23 desa. Sementara, keruntuhan akibat piping pada Bendungan Bintang Bano memiliki luas genangan keruntuhan Bendungan Bintang Bano sebesar 5113,94 Ha dengan desa terdampak sejumlah 21 desa. Bintang Bano termasuk dalam klasifikasi bendungan dengan bahaya tingkat 4 yaitu bahaya sangat tinggi.ABSTRACT: Bintang Bano Dam is located in Bangkatmonte Village, Brang Rea District, West Sumbawa Regency, West Nusa Tenggara Province. Bintang Bano dambreak can occur due to overtopping and piping. From the hydrological analysis the PMF inflow discharge value was 2625,887 m3 / sec. The simulations carried out by the BOSS Dambrk program, the dambreak due to overtopping of the Bintang Bano Dam has an inundation area of Bintang Bano Dam in the amount of 5714.14 Ha with an affected 23 villages. Meanwhile, the dambreak due to piping in the Bintang Bano Dam has an inundation area of Bintang Bano Dam in the amount of 5113.94 Ha with the affected 21 villages. Bintang Bano is included in the classification of dams with level 4 hazards namely very high hazards.   
STUDI POTENSI PEMBANGKIT LISTRIK TENAGA MINI HIDRO (PLTM) DESA KEPIL, KABUPATEN WONOSOBO, JAWA TENGAH Anggraini, Fauziah Rahmawanti; Juwono, Pitojo Tri; Suhartanto, Ery
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK: NegaraaIndonesiaamempunyai potensi pembangkit listrik tenaga air (PLTA) sebesar 70.000 mega watt (MW). Potensi ini baru dimanfaatkanasekitar 6apersen atau 3.529 MW atau 14,2 % dariajumlah energi pembangkitan PT PLN. Untuk dapat mengoptimalkan potensi tersebut perlu dilakukan studi potensi, salah satunya di Desa Kepil, Kabupaten Wonosobo, Jawa Tengah. Agar dapat dimanfaatkanaperlu diadakan kajian terkait perencanaan Pembangkit Listrik Tenaga Mini Hidro (PLTM). Berdasarkan hasil kajian didapatkan debit andalan sebesar 1,377 m3/detik. Tinggi jatuh efektif rata-rata yang digunakan untuk membangkitkan PLTM sebesar 24,08 meter. PLTM ini dibangunadengan komponen sipil yang meliputi bangunan pengambilan, bak pengendap, saluran pembawa, bak penenang, pipa pesat, rumah pembangkit, dan saluran pembuang. Turbin yang digunakan di daerah studi adalah jenis Francis. Besarnya rata- rata daya yang dapat dihasilkan sebesar 222,49 kW dan energi yang dihasilkan sebesar 1.942.040,87 kWh atau sebesar 1,943 GWh. Banyaknya rumah yang dapat terlayani dengan kapasitas terpasang setiap rumah sebesar 450 watt adalah sebanyak 494 rumah. Kata Kunci: PLTM, Turbin, Energi, Listrik, Debit.   ABSTRACT: Indonesian country has a potential hydroelectric power plant of 70,000 mega watts (MW). This potential was only used by about 6 percent, or 3,529 MW, or 14.2% of the total energy generation PT PLN. In order to optimize the potential need to do a study of potential, one of them in the Kepil village , Wonosobo, Central Java. So can be used there should be a study related to planning of Mini Hydro Power Plant (PLTM). Based on the study results obtained mainstay discharge of 1,377 m3/sec. High effective fall that was used to generate micro power plants amounted to 24,08 meters. This micro power plants were built with a civilian component that includes intake, sand trap, headrace, forebay, penstock, power house, and tailrace. Turbine used in the study area is kind of Francis. The amount of the average power that could be generated at 222.49 kW and the energy produced amounted to 1,942,040.87 kWh or a total 1,943 GWh. Keywords: Hydropower,Turbine, Energy, Electric, Discharg.
STUDI PERENCANAAN PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) DESA CIKEUSIK KECAMATAN CIDAHU KABUPATEN KUNINGAN PROVINSI JAWA BARAT oktanti, vita; Juwono, Pitojo Tri; Wicaksono, Prima Hadi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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ABSTRAK : Sungai Cisanggarung yang terletak di Kabupaten Kuningan ini memiliki tinggi jatuh yang sangat rendah setinggi 1,054 m dan pemilihan jenis turbin.yang digunakan tergolong Pumps As Turbin (PAT). Dalam kondisi tersebut, Sungai Cisanggarung mendukung untuk dibangunnya PLTMH. Sungai Cisanggarung dapat mengalirkan debit yang diandalkan sepanjang.tahunnya dan memiliki kontur sesuai dengan teknis perencanaan untuk dibangunnya PLTMH Cikeusik.Dalam perencanaan PLTMH Cikeusik, debit pembangkit Q90% sebesar 1,509 m3/detik dan bangunan sipil meliputi bangunan pengambilan memiliki lebar pintu 2,2 meter. Pipa pesat berdiameter 0,97 meter. Turbin yang digunakan adalah jenis Axial Flow Pump As Turbine, menghasilkan daya 11,934 kW dan energi sebesar 104.545,17 kWh. Hasil Rencana Anggaran Biaya (RAB) perencanaan PLTMH Cikeusik adalah Rp 1.242.193.008,33.   Kata kunci: PLTMH, Debit, Turbin, Listrik, Rencana Anggaran Biaya   ABSTRACT : Cisanggarung River located in the district Kuningan has a very low head as 1,054 m and selection different types of turbines used Pumps As Turbin (PAT). In these conditions, river Cisanggarung support for the building of PLTMH. Cisanggarung River can flow the discharge water that reliable throughout the year and have contours in accordance with technical planning to built a PLTMH Cikeusik. In plannings PLTMH Cikeusik, plant discharge Q90% of 1.509 m3/s and civic buildings include intake has 2.2 meters. Diameter penstockpipe of 0.97 m. The turbine used is type Axial Flow Pump Turbine, power of 11.934 kW and energy amounted to 104,545.17 kWh. The results of the budget plan costs (RAB) planning PLTMH Cikeusik is Rp 1,242,193,008.33. Key words: PLTMH, Flow, Turbine, Electric, Plans Cost Budget
ANALISIS KERUNTUHAN BENDUNGAN PANDANDURI LOMBOK DENGAN MENGGUNAKAN APLIKASI HEC-RAS DAN BERBASIS INASAFE Pratama, Muhammad Rizky; Juwono, Pitojo Tri; Asmaranto, Runi
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 3, No 2 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Bendungan Pandanduri merupakan bendungan urugan zonal inti tegak yang batas hilirnya berada di Selat Alas, dibangun pada tahun 2011 sebagai salah satu alternatif penyedia sumber air di Provinsi Nusa Tenggara Barat. Analisis keruntuhan Bendungan Pandanduri dimaksudkan untuk mendapatkan gambaran karakteristik genangan banjir, klasifikasi bahaya dan estimasi kerugian yang dapat terjadi. Keruntuhan Bendungan Pandanduri disimulasikan dengan skenario akibat overtopping dan piping dengan menggunakan aplikasi HEC-RAS 5.0.7 dan berbasis InaSAFE. Potensi curah hujan probable maximum precipitation (PMP) sebesar 898,80 mm dan debit banjir rancangan maksimum probable maximum flood (PMF) sebesar 1975,579 m³/det, didapatkan hasil dampak terbesar yang terjadi pada bagian hilir bendungan adalah pada simulasi kondisi overtopping 2,059 meter diatas bendungan, dengan luasan genangan banjir 88,61 km2, kedalaman maksimum 49,30 meter pada alur sungai dan kedalaman rata-rata 7,16 meter. Sehingga secara administratif mencakup 35 desa dari 7 kecamatan di bagian hilir Bendungan Pandanduri terkena banjir dan menyebabkan 104.000 jiwa penduduk dan 33.800 bangunan terendam banjir. Dari hasil analisis, keruntuhan Bendungan Pandanduri dapat mengakibatkan kerugian yang akan ditanggung penduduk maupun pemerintah setempat sebesar Rp. 1.525.360.815.843.Pandanduri Dam is a central-core fill type dam where the downstream boundary is located in Alas Strait, built in 2011 as one of the alternative water supply in West Nusa Tenggara. Pandanduri dam break analysis aims to depict the flood inundation, hazard classification and cost-losses estimation. It is simulated due to overtopping and piping using HEC-RAS 5.0.7 and based on InaSAFE. With the potential of Probable Maximum Precipitation (PMP) is 898,80 mm and the flood discharge of maximum design of Probable Maximum Flood (PMF) is 1975,579 m³/det, showing the biggest impact in downstream area with the simulation of overtopping condition 2,059 meters above the dam, the flood of 88,61 km2, the maximum depth of 49,30 m on the river terrain and the average depth of 7,16 m. Thus administratively covering 35 villages from 7 sub-districts in the downstream of Pandanduri dam are affected by flood, causing 104,000 inhabitants and 33,800 buildings flooded with water. From the analysis, the collapse of Pandanduri Dam resulted in economic losses that will be obtained by local people or government is Rp. 1,525,360,815,843.
ANALISA KELAYAKAN EKONOMI: STUDI KASUS PADA PROYEK PEMBANGUNAN BENDUNGAN KUWIL KAWANGKOAN Pradany, Ahmad Dwiki; Juwono, Pitojo Tri; Andawayanti, Ussy
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 3, No 2 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Bendungan Kuwil Kawangkoan dibangun di Kabupaten Minahasa Utara, Provinsi Sulawesi Utara dan terletak pada Daerah Aliran Sungai (DAS) Tondano. Tujuan dari pembangunan bendungan ini adalah memasok air baku, menyediakan energi listrik, dan mengendalikan banjir. Membangun sebuah bendungan membutuhkan modal yang sangat besar, oleh karena itu perlu dilakukan pertimbangan dalam aspek kelayakan ekonomi. Oleh sebab itu, studi ini bertujuan untuk menganalisa potensi energi listrik, kebutuhan air baku, biaya pembangunan, kelayakan ekonomi, dan sensitivitas dari bendungan tersebut. Hasil dari studi ini menunjukan bahwa potensi energi listrik sebesar 10.676,55 MWh dalam satu tahun, kebutuhan air baku sebesar 274.551,70 m3 /hari, dan biaya pembangunan sebesar Rp.1.835.277.893.220,12. Sedangkan hasil analisa kelayakan ekonomi menunjukan bendungan ini layak secara ekonomi berdasarkan parameter Net Present Value (NPV), Benefit-Cost Ratio (BCR), Internal Rate of Return (IRR), dan Payback Period (PP). Kemudian hasil dari analisa sensitivitas menunjukan untuk perubahan usia guna sebesar 20% terjadi penurunan NPV energi listrik 50,28%, air baku 49,39%, dan pengendalian banjir 5,54%.Kuwil Kawangkoan Dam is located in Tondano Watershed, Minahasa Utara Regency, North Sulawesi Province. The purpose of this dam is to supply electrical energy form hydropower plant, clean water supply, and flood control. However, building a dam requires huge amount of money for both initial investment and operating costs. Therefore, we should take economic feasibility into account. The objective of this study is to analyze the potential of energy generated, forecasting clean water demand, calculating initial investment costs, analyzing economic feasibility, and sensitivity analysis. Result from this study shows that this dam could generate 10.676,55 MWh in a year, the peak clean water demand is 274.551,70 m3 /day, and initial investment costs to build is Rp.324.864.370.824,93. Result from economic feasibility analysis shows that economically feasible by NPV, BCR, IRR, and PP metrics. Result from sensitivity analysis showing for 20% reduction in project lifetime, the NPV for electrical energy drop to 50.28%, clean water supply 49.39%, and flood control 5.54%. 
Analysis on The Effect of Groyne Type Impermeable Placement on Sediment Distribution in Lariang River Bend Prasetyo, Wahyu; Juwono, Pitojo Tri; Sisinggih, Dian
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 1 (2021)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2021.00401.5

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Sedimentation and erosion caused by differences in discharge is a problem that often occurs at river bends. One of the functions of placing the groyne is to reduce the river flow velocity along the riverbank, accelerate sedimentation, and ensure the embankment or river bank's safety against scouring. This study aimed to determine the distribution of current velocity, distribution of riverbed shear stress, and sediment distribution to the effect of groyne placement. There are 7 (seven) simulation models used to get the most effective groyne placement. From the model simulation results by adding a groyne building on the river's outer bend for the simulation model scenario 2 to scenario 7, the largest sedimentation production is in scenario 3, namely the height of riverbed sediment deposits 230 hours of 1.094 m. Furthermore, the groyne building's effective placement is determined based on a maximum change in the riverbed scenario. In scenario 3, the placement and dimensions of the groyne length of 17.5 m; distance between groyne 24.4 m; the groyne is inclined upstream in the direction of flow 10°.
The Influence of Damage to the Geomembrane Layer on the Seepage Pattern and Discharge at the Homogeneous Embankment Dam Wijayanto, Achsin; Juwono, Pitojo Tri; Cahya, Evi Nur
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 1 (2021)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2021.00401.7

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Placing the geomembrane layer on the upstream slope can control the seepage in homogeneous dams. Poor geomembrane design, construction and maintenance caused damage to the geomembrane that caused a leak through the dam body. This study discusses the effect of damage on the geomembrane layer at the homogeneous embankment dam on the seepage pattern and discharge. The study location is in the Sianjo Anjo dam, Aceh Singkil district, a homogeneous dam with a geomembrane layer located in the dam body's upstream part. The damage of the geomembrane layer is assumed caused by the various defect of locations and size. The results show that the seepage pattern (phreatic line) tends to be weak in the geomembrane layer without damage.  Meanwhile, if the geomembrane layer is damaged, the larger the defects' width, the higher the phreatic line. However, the seepage pattern that occurs shows insignificant or almost the same. The seepage discharge increases with increasing defect width and decreasing defect location.
Analysis of Waikelo Port Breakwater Failure through 2D Wave Model Winarta, Bambang; Damarnegara, A. A. N Satria; Anwar, Nadjadji; Juwono, Pitojo Tri
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 2 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00102.6

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Waikelo Port is located in South West Sumba of East Nusa Tenggara. The port facilities are protected by breakwater with a vertical wall construction and it was built in a relatively deep ocean at -15m of Low Water Sea Level (LWS). On 21 of January 2012, an earthquake with magnitude of 6.3 Richter scale occurred around Sumba Island and it caused cracking in the concrete wall of breakwater. Then, 4 days after on 25 st January 2012, a heavy wind of 20–23 knots generated a high wave around 4.0–5.0m in Sumba strait. These high waves caused a critical damage on the west part of the breakwater. The damage of port facilities were getting worse when a storm called Lua hit on March 2012. This study was conducted to observe the effect of the extreme event in the failure of breakwater. The result of two-dimensional (2D) wave model shows that the wave heights in the area of breakwater are varied 3.80 to 4.0m. It is quite greater than the wave design of 50 years return period (= 2.00m) which was used in breakwater design and calculation. This observable fact confirms that the failure of breakwater was caused by the continuous extreme events that exceed the design criteria
Stability of existing Banyukuwung DAM in recent hydrology and geotechnical conditions Juwono, Pitojo Tri; Asmaranto, Runi; Murdhianti, Ari
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 2 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00302.1

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Banyukuwung Dam is located in the villages of Sukorejo and Sudo, Sumber District, Rembang Regency, Central Java Province. This dam was built in 1995-1997 to serve the needs of 7750 ha of irrigation water and 35 l/s of raw water needs. Dam type is homogeneous reservoir, has a height of 19.40 m above the riverbed and 25.40 m above the foundation excavation. The length of the dam peak is 181.00 m and the width is 5.00 m while the reservoir volume under normal water conditions is 1.64 million m3. Along with seasonal changes and extreme hydrological behavior and based on an investigation of current geotechnical conditions, stability analysis is needed based on these two conditions. It is very important to plan operational and maintenance activities related to the dam maintenance program. So that it is expected to be useful for the relevant agencies in making operational decisions. The purpose of this study was to determine the stability of the existing Banyukuwung dam based on the latest hydrological and geotechnical behavior. The results are expected to provide recommendations in the management, operation and maintenance of the dam manager.
ANALYSIS OF CARRYING CAPACITY OF THE PORONG RIVER CAUSED BY SIDOARJO MUD DISPOSAL Saputro, Robert Agung; Sisno, Suhardjono; Juwono, Pitojo Tri
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 2 (2021): IN PRESS
Publisher : Fakultas Teknik UB

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This study aims to examine the sediment distribution models and the stream sediment distribution due to mud disposal of Porong River. It examines how the sediment distribution models and deposition, the distribution of stream sediment due to mud disposal along with its impacts on the river's capacity, and whether the mud disposal has a harmful impact on the water quality. The data used were based on topographic and Bathymetric data of Porong River, cross-sections of the river, and terrain sediment distribution patterns. The study conducted field and secondary data analysis, hydrological analysis, oceanographic analysis of Mura River and river hydraulic analysis. The study concludes that to maintain its capacity and prevent negative impacts, it is necessary to protect the cliffs and embankments along the segment of the river. To protect the community pond area, overburden and/or river dredging activities along with the segments from the branch to the estuary of the river are needed. Furthermore, it is also necessary to add artificial inputs such as submersible Kribs that are arranged on piles to deal with problems of river sediments in the mouth of Porong River.
Co-Authors -, Muhammad Fahmi Adhitya Zein Muammar Adityawitari, Fadhilah Filzah Agus Indarto Alamsyah, Muh Arsyil Alex Wahyu Kesuma alfredo, moch Andre Primantyo H Andre Primantyo Hendrawan Anggara Cahyo Wibowo Anggraini, Fauziah Rahmawanti Aniek Masrevaniah Asmaranto, Runi Atikah, Dewi Ayu Pratama Putri, Ayu Pratama Ayu, Mirsa Azmi, Muhammad Nur AZWAR, HAFIDH BURHAN Bahreisy, Arzil Abdillah Bambang Pramujo, Bambang Bayu Wicaksono cristina Dwi, cristina Daffa Muhammad Faeyza Damarnegara, A. A. N Satria Danang, Kiswanto - Dediek Isqak Devi, Agung Ayu Gayatri Dharyatiputri, Jihan Faradillah Diah Fitri Maulida Dian Dinanti Dian Sisinggih Dian Sisinggih Dwi Priyantoro Eko Suryo Pranoto Eliana Renate Simanungkalit Emma Yuliani Erdwyansa, Richard Eric Virgiawan Aryadi Ery Suhartanto Evi Nur Cahya Fauzia Sonia, Fauzia Fayiz, Naufal Muhammad Fikhoir, Yalim Firdaus, Adam Wahyu Francsdito, Muhammad Geraldine, Monica Odelya Ghafara, Abdan Izzan Gunawan Prayitno hari siswoyo Harimurti Harimurti Heri Suprijanto Holyness Nurdin Singadimedja Irene Dhian Andriawati, Irene Dhian Irsyad Musthofa Yahya Iskandar Iskandar Jadfan Sidqi Fidari Jalaludin, Muhammad Satia Karin, Indriana Vaninda Komala Candra, Yoggi Fracasnofa Lily Montarcih Limantara Linda Prasetyorini Lisyahadah, Annida M. Janu Ismoyo M. Latiefudin Taruna Pratama Manalu, Marchell Geovande Maskur Efendi, Maskur Mayang Wigayatri Mey Wahyuningdyah mikail Adhi, mikail Milleanisa, Khofifah Endar Moch. Sholichin, Moch. Moh. Sholichin Mohammad Bisri Mohammad Taufiq Mudinillah, Adam Muhammad Amar Sajali Muhammad Ruslin Anwar Muhammad, Dien Azmi Murdhianti, Ari Murdhianti, Ari Nabila, Naufa Tasha Nadjadji Anwar Nindya Sari Nisa Andan Restuti, Nisa Andan Nurwijayanti oktanti, vita Pangestu, Ihsan Dwi Pradany, Ahmad Dwiki Pradoko Indra Purwanto Pramana, Fabian Raditya Pratama, Muhammad Rizky Pratiwi, Tami Prima Hadi Wicaksono Putra, Damarendro Wihandaru Putra, Galih Rizam Pratama Putri, Laily Amalia Rachmanda, Valdi Cahya Rahmah Dara Lufira Ramadhan, Yudhistira Akbar Zulfikar Ratu Anita Rachmawati Ridayani, Aline Tabina Rini Wahyu Sayekti Riska Karunia Ellanda Rispiningtati Rispiningtati Riwin Andono Riyanto Haribowo Rizal Rizal Rizka Aditya Rachman Runi Asmaranto Runi Asmaranto Runi Asmaranto Sandy, Dina Yunita Saputro, Robert Agung Saranani, Muh. Rivan Sasongko, Yufintra Prasetya Sholichin, Moh Siregar, Muhammad Rafi Sisno, Suhardjono Sodikin, Wahlul Suhardjono Suhardjono Suhartanto, Ery Sulthon Arsyad Aifudin Sumiadi Suprijanto, Heri Suwanto Marsudi Syafiq, Gilang Syah Putra, M. Raihan Ussy Andawayanti vania, clarizka Very Dermawan Very Dermawan Viari Djajasinga Wahyu Prasetyo Wahyu Sejati Wahyudi, Aqsha Prahitna Wicaksono, Dadang Teguh Wicaksono, Prima Hadi Widandi Soetopo Widandi Soetopo Wijaya, Andrian Ahmad Wijayanto, Achsin Win Haliem Winarta, Bambang Wiwik Widyaningsih Wiwin Sri Rahayu Yudha Tantra Ahmadi