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KAJIAN PEMANFAATAN POTENSI SUMBER DAYA AIR TERPADU ( STUDI KASUS MATA AIR INGAS (COKRO), KEC. COKRO TULUNG KABUPATEN KLATEN – JAWA TENGAH) Sriyana, Sriyana
TEKNIK Volume 32, Nomor 1, Tahun 2011
Publisher : Fakultas Teknik, Universitas Diponegoro

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Potential exploitation of Ingas (Cokro) water resource is currently less than optimal, there are still manywasted water flows and there is still no coordination in planning. The objective of this research is to reviewwater resource potential integratedly, by measuring the spring discharge in real terms, analyzing the utilizationof water source and water balance. The method used in this thesis is by measuring the discharge using currentmeter, analyzing water requirements for plants using Penman method, and analyzing data with the help ofMicrosoft Exel. It is resulted that the total potential of Ingas (Cokro) water resource is 1297 l/dt, utilized fordrinking water (PDAM Surakarta) at 400 l/dt, drinking water for Cokro Village at 4 l/dt, and the remainder isused for irrigation and moving a turbine with 50 Watt electric power. Water demand for irrigation is 995 l/dt,fullfilled from Ingas (Cokro) source discharge at 593 l/dt plus surface water discharge as a result frommeasurment of pulsur river (Plosowareng weir) at 696 l/dt, from the total water resource potential of 1289 l/dt.Water balance of Ingas (Cokro) water resource has already balanced or optimal, while residual discharge of294 l/dt is obtained at measurement point (Plosowareng weir)
KAJIAN KARAKTERISTIK DAS TUNTANG DAN MODEL PENGELOLAAN DAS TERPADU Sriyana, Sriyana
TEKNIK Volume 32, Nomor 3, Tahun 2011
Publisher : Fakultas Teknik, Universitas Diponegoro

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Abstract

A low carrying capacity of drainage basin or watershed may cause several problems, where floods occur inrainy season and droughts occur in dry season, also the occurrence of erosion, sedimentation and so on, hasbeen government’s problem in watershed management all along. In order to anticipate this condition,characteristic data of a watershed are required, so that it can be used as basic reference of watershedmanagement.The purpose of this paper is to conduct a study on the characteristics of Tuntang watershed of Central JavaProvince and watershed management model.The method of approach uses aspects of watershed geomorphology such as the shape of watershed, elongationratio and circularity ratio approaches, order of river using Strahle method, watershed density using Lynsleyformula, and river gradient calculated based on the comparison between elevation difference and length of mainrivers.Results show that magnitude index of Tuntang Sub watershed has elongated shape with Rc value between 0.27 to0.46, which means that the longer concentration time needed, the lower flood fluctuation. And relatively roundedshape with Rc value between 0.57 to 1.00, which means that the shorter concentration time needed, the higherflood fluctuation occurs. Sub watershed order range from 4 to 6 order, which means that river basins have floodwater level increase (moderately quick to fast), likewise water level decrease. Level slope between 0 - 8 % (lowflow velocity) with an area of 117605.56 Ha, and very steep slope > 40 % (very high flow velocity) with an areaof 4219.09 Ha. The highest drainage density occurs in Sub watershed of Tuntang downstream 1.88 Km / Km²,and lowest Sub watershed of Blorong 1.01 Km / Km². Based on both magnitudes, the water being stored is inmedium category and floods and droughts occur. The flow pattern has the shape of rectangular dendritic anddendritic medium, showing that soil characteristics is limestone and shale. To obtain optimal performance resultof Tuntang watershed, integrated watershed management program is needed in watershed managementintegration by involving various associated parties.
SISTEM INFORMASI JARINGAN IRIGASI (SIJARI) KABUPATEN SUKOHARJO BERBASIS PROGRAM ARCVIEW GIS 3.3. Sriyana, Sriyana
TEKNIK Volume 31, Nomor 1, Tahun 2010
Publisher : Fakultas Teknik, Universitas Diponegoro

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Data availability of irrigation area authority, discharge data, physical condition of weir, channel condition,hydraulic structure damage, finance needed for recovery etc are sometimes unclear, invalid and lost in data,low service and poor performance, resulting planning interest, monitoring implementation and controlunfulfilled. The purpose of this thesis is to make SIJARI software (Sistem Informasi Jaringan Irigasi )whichcontains data base information of Irrigation in Geographic Information System(SIG), based on Arcviewprogram GIS 3.3. The result of SIJARI software contains all data base information starting from irrigationarea authority, structures damage, channel condition, crop pattern etc, where all data can be fast andaccurately accessible and can be used for pre-plan, planning, implementation, monitoring and control.
Pendekatan Model Pengendalian untuk Mengurangi Risiko Akibat Gelombang Tsunami Sriyana, Sriyana
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (669.141 KB) | DOI: 10.14710/mkts.v13i2.3914

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Impact happened waving tsunami result very big loss of soul good and material and damage of nature and by psycology very harming for hit by society is accident. As does which have experienced of State of specially at Provinsi of Nangroe Darusalam, Sumatra North, Banyuwangi Ciity which have experienced of earthquake disaster and wave of tsunami. With existence of mentioned of hence needing the existence of effort which must be done to lessen risk of effect of earthquake disaster and wave of tsunami. Intention of this article is to give input of in the form of operation model alternatively to lessen risk of effect of wave of tsunami. Approach of operation model cover Early Information System warning, House Podium, Infill Escape Hill, Green Belt, Sea Wall or Dam, with approach of the model if executed hence risk faced will decrease. Keywords: approach of operation model, tsunamiPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3914[How to cite: Sriyana, 2005, Pendekatan Model Pengendalian untuk Mengurangi Risiko Akibat Gelombang Tsunami, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 106-113]
ANALISA SEDRAINPOND SEBAGAI UPAYA KONSERVASI TANAH DAN AIR Putro, Haryono; Sriyana, Sriyana
Jurnal Ilmiah Desain dan Konstruksi Vol 9, No 1 (2010)
Publisher : Universitas Gunadarma

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Indikator kinerja dari bangunan air seperti waduk, bendung, bendungan,saluran drainase maupun irigasi yaitu jumlah sedimen pada bangunan air. Semakin cepat terjadi sedimentasi maka semakin pendek umur pelayanan dari bangunan air itu, kapasitas dan volume rencana sudah tidak dapat terlayani dengan baik dan biaya operasianl & pemeliharaan dari akibat sedimen ini cukup besar. Sedimentasi ini semakin dipicu akibat terjadinya pemanasan global, sehingga akan mempengaruhi iklim, dimana musim hujan menjadi pendek, sehingga intensitasnya cenderung tinggi. Butiran air hujan dengan intensitas hujan tinggi akan mengenai tanah yang mengakibatkan limpasan air hujan banyak mengandung butiran tanah/sedimen tersuspensi bahkan sampai terjadi banjir, dan musim kemarau menjadi panjang sampai tidak ada aliran air. Sudah saatnya semua pihak perlu memikirkan bahaya dan ancaman ini. Tujuan penelitian ini adalah menganalisa SeDrainPond (Sedimentation-Drainage-Ponding) dimana model ini mengendalikan angkutan sedimen dengan menangkap sedimen (sediment trapping), mengurangi debit limpasan yang sekaligus me-recharge air tanah dan tangkapan sedimen digunakan untuk pupuk dan dikembalikan lagi dalam area sawah/ladang. Model ini mampu mengurangi debit limpasan 50% dan tergantung dari dimensi dan jumlah SeDrainPond, mampu mengurangi sedimen tersuspensi dan mengembalikan kesuburan lahan. Dengan pembuatan dan pemeliharaan oleh petani maka dapat mengurangi biaya operasional dan pemeliharaan bangunan air oleh pemerintah.
PERENCANAAN EMBUNG TAMBAKROMO UNTUK MEMENUHI KEBUTUHAN AIR BAKU Fahmi, Mushafa; Halim, Fandy; Atmojo, Pranoto Samto; Sriyana, Sriyana
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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The increasing scarcity of water resources, there needs to be an effort that must be implemented to meet the needs of the water. One way PT. Indocement to meet the water requirement of 60 liters / second to harness the potential of Beku river with Tambakromo Embung development plan, in Wukirsari Village, District Tambakromo, Pati. Based on the mainstay discharge analysis by the method of FJ mock obtained the discharge of 120 liters / sec. For the body design of the small dam used the flood discharge hydrological data with HSS Gamma I method with flood discharge plan 1000 years return period amounted 116.92 m3/second. Tambakromo Small Dam capacity is 5,000,000 m3. Tambakromo Small Dam height is 20 meters, 7 meters wide summit reservoir, spillway width of 15 meters, spillway height is 2 meters. Estimated cost to build Tambakromo Small Dam amounted Rp.33.874.000.000, 00.
ANALISIS PENGARUH TINGKAT KOMPONEN DALAM NEGERI TERHADAP KEEKONOMIAN PLTN Sriyana, Sriyana; Lumbanraja, Sahala Maruli; Joyosukarto, Priyanto Mudo; Bastori, Imam; Yuliastuti, Yuliastuti; Suprawoto, Bambang; Refrison, Refrison
Jurnal Pengembangan Energi Nuklir Vol 12, No 2 (2010): Desember 2010
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

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Abstract

ABSTRAKANALISIS PENGARUH TINGKAT KOMPONEN DALAM NEGERI TERHADAP KEEKONOMIAN PLTN. Telah dilakukan studi pengaruh tingkat komponen dalam negeri terhadap keenomian PLTN. Lingkup penelitian ini meliputi telaah teknologi sistem PLTN (Optimized Power Reactor, OPR-1000), kemampuan industri nasional untuk berpartisipasi dalam pembangunan PLTN dan analisis pengaruh keekonomiannya. Analisis ekonomi dilakukan untuk pembangunan 2 unit PLTN OPR-1000. Dari hasil studi dapat disimpulkan bahwa: (1) TKDN untuk pembangunan PLTN Indonesia yang pertama adalah sebesar 35,24% untuk kasus pesimis dan 43,86% untuk kasus optimis. (2) Pemenuhan angka TKDN tersebut perlu didukung pemerintah berupa kebijakan industri, terutama yang terkait dengan proses alih teknologi. (3) Besarnya biaya pembangkitan yang dapat dihemat per tahun pada penerapan TKDN pesimis berkisar antara US$ 14,55 juta - US$ 14,57 juta dan pada TKDN optimis berkisar antara US$ 22,23 juta - US$ 22,26 juta. (4) Penerapan TKDN memberikan dampak penurunan biaya pembangkitan listrik berkisar antara 1,75% - 1,76% untuk kasus pesimis dan 2,67% - 2,68% untuk kasus optimis.Kata kunci: komponen dalam negeri, keekonomian, PLTN, alih teknologi ABSTRACTANALYSIS ON THE EFFECT OF LOCAL CONTENT TO THE ECONOMIC ASPECT OF NPP. Study analysis on the effect of local content to the economic aspect of NPP has already been conducted. This scope of study covers: NPP technology system analysis (OPR-1000), national industry capability to participate in NPP construction and effect analysis toward the economic. Economic analysis is conducted for 2 units NPP OPR-1000. This study concludes that: (1) The level of local content for the first 2 units NPP in Indonesia about 35,34% (pessimistic case) and 43,38% (optimistic case). (2) To reach the local content government support is needed, i.e. policy of industry, particularly the police related to technology transfer. (3) The total generation cost that could be saved per year in pessimistic case is around US$ 14.55 million - US$ 14.57 million and in optimistic case it is around US$ 22.23 million – US$ 22.26 million. (4) The local content implementation will provide decreasing of generation cost about 1.75% up to 1.76% in pessimistic case, and around 2.67% up to 2.68% in optimistic case.Keywords: local content, economic, NPP, technology transfer
INDUSTRI NASIONAL DAN KENDALANYA UNTUK BERPARTISIPASI DALAM PEMBANGUNAN PLTN Sriyana, Sriyana; Birmano, Moch. Djoko
Jurnal Pengembangan Energi Nuklir Vol 14, No 2 (2012): Desember 2012
Publisher : BATAN

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Abstract

Tolok ukur kesiapan pembangunan PLTN adalah sejauh mana infrastrukturnya dipersiapkan. Salah satu aspek yang perlu dipersiapkan adalah industri nasional. Seberapa jauh industri siap dan akan terlibat dalam pembangunan nantinya. Oleh karena rencana pembangunan PLTN merupakan rencana jangka panjang, maka perlu dianalisis perkembangannya, yakni dukungan dan hambatannya. Tujuan penulisan makalah ini adalah menguraikan kendala-kendala industri nasional untuk berpartisipasi dalam pembangunan PLTN. Adapun metode yang digunakan adalah penelusuran literatur, pengumpulan data kemampuan industri dan pengalaman industri, serta diskusi dengan praktisi industri. Dari data dan analisis yang dilakukan dapat disimpulkan bahwa kendala yang kira-kira dihadapi oleh industri nasional dalam berpartisipasi adalah (1) Kebijakan pemerintah yang tidak jelas, (2) Potensi pasar industri yang perlu ada jaminan, (3) Melihat hanya kepentingan jangka pendek, (4) Industri besar yang menjadi penggerak industri lainnya belum terlihat, (5) Daya kompetisi yang masih perlu terus ditingkatkan (6) Pelaku industri yang hanya berorientasi pada keuntungan semata dan tidak berpihak pada peningkatan kemampuan nasional.Kata kunci: industri nasional, kendala, partisipasi, pembangunan, PLTNReadiness of nuclear power construction benchmarks is the extent to which the infrastructure has been prepared. One aspect that needs to be prepared is the national industry involvement. How far the industry is ready and will be involved in future development. Nuclear power development planning is a long-term planning, so, it is necessary to analyze about the supporting items and also the constraints. The purpose of this paper is to parse what about the constraints of national industry to participate in the construction of nuclear power plants. The method are a literature study, data collection of industry capability and industry experience, as well as discussion with industry practitioners. From the above data and analysis can be concluded that the constraints faced by the national industry in participating for NPP construction are: (1) Government policy is unclear, (2) The potential for the industrial market which needs to be guaranteed, (3) The policy horizon just for short-term interests only, (4) Lack of the big manufacturer that was taken action as another industries driver, (5) The competitiveness which still need to continue enhanced, (6) Industry players that only profit-oriented and do not take sides on enhancing of the national capability.Keywords: constraints, construction, national industry, NPP, participation,
PERENCANAAN NORMALISASI SUNGAI BLUKAR KABUPATEN KENDAL Chendratama, Erick; Arie Wibawa, I Putu Dian; Sriyana, Sriyana; Pranoto, Sumbogo
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Changes in land use in the Blukar watershed impact on the amount of surface runoff that flows directly into the river. The result is erosion in the upstream areas, while sedimentation occurs in downstream areas. Sedimentation make river capacity is reduced so that the puddle caused by flooding can not be avoided. The purpose of this paper is to reduce the puddle caused by flooding of Blukar river by providing designs of river normalization and conservation. The method used are the analysis of the average maximum rainfall using Polygon Thiesen method, analysis of rainfall intensity using Mononobe formula, flood discharge analysis with Rational method, FSR Java-Sumatra, Haspers, Weduwen, HSS Gama I, HEC-HMS (computer program) and Passing Capacity, channel cross-sectional analysis with the aid of a computer program HEC-RAS, foundation and slope stability analysis using Shield and Fellenius formula. The study results showed that of the various method of flood discharge analysis conducted, flood discharge plan selected by FSR Java-Sumatra method with return period of 25 years at 210.6705 m3/sec, sectional repairs done from STA 0+000 - STA 22+500 with 22.5 km long with the help of HEC-RAS which channel base width of 35 m, the embankment slope 1:1.5, the water level varies, and surveillance by 0.8 m high. From the analysis of HEC-RAS was found that the dimensions above approximate can reduce the floodwaters as high as 1.71 m. Meanwhile for excavation, the total volume of channel excavation is 2,471,904.5 m3 with details of 378,615 m3 used as material embankment and 2,093,289.5 m3 discharged to disposal area. Furthermore, in order to obtain optimal performance results of Blukar watershed flood management, need to follow up by involving various stakeholders.
REKAYASA NILAI PEMBANGUNAN GEDUNG SERBA GUNA UNIVERSITAS NEGERI SEMARANG Jatmiko, Jatmiko; Wibowo, Ary; Sriyana, Sriyana; Dwi H., Jati Utomo
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 1, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Value engineering of multipurpose building project Semarang State University conducted for optimization of cost and functionality. Value engineering is used to evaluate the project plan in order to save the budget costs, optimize performance and efficiency of time but still consider the quality of the work. Application of value engineering aims to obtain high-cost work items, bring alternative design ideas to replace the original design on selected work items and calculate the cost savings from the application of value engineering. Stages of this value engineering plans that include; stages of information, creative stage, analysis stage and the stage of recommendations. Identification of high-cost items of work with cost breakdown model and Pareto charts. Potential work item function analysis is performed to classify the basic functions and secondary functions in order to obtain the ratio of cost / worth, then performed a zero-one matrix analysis to determine the best alternative of testing against several criteria functions presented. Value engineering analysis results indicate that cost savings, for items slab occurred saving the value / cost of Rp. 3.274.245.393, 35 or 51.20 % of the initial cost of Rp. 6,394,649,122.60 and 8.57 % of the total project cost. For items foundations occurred saving the value / cost of Rp. 318,946,000 or 41.27 % of the initial cost of Rp. 772,790,000.00 and 1.19 % of the total project cost. For the cost of the item walls Eco Lite Panel larger Rp. 140,847,906.93 of the cost of masonry, but in terms of execution time Eco Lite Panels faster than bricks with the result of the acceleration time fee of Rp. 224.734.555,16 or 21,82 % of the cost of the wall work and 0.59 % of the total project cost. Physical Eco Lite Panel calsiboard coated on both sides to make more smooth and flat surface so that the surface can be directly painted. So the total cost savings after the engineering value is equal Rp. 3.817.926.101,65 or by 9.99 % of the total cost of the overall work of Rp. 38,199,420,000.00.