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REACTOR CAVITY COOLING SYSTEM WITH PASSIVE SAFETY FEATURES ON RDE: THERMAL ANALYSIS DURING ACCIDENT Rahayu Kusumastuti; Sriyono Sriyono; Mulya Juarsa; Hendro Tjahjono; I. D. Irianto; Topan Setiadipura; D. H. Salimy; A. Hafid
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 21, No 2 (2019): JUNI 2019
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1878.724 KB) | DOI: 10.17146/tdm.2019.21.2.5499

Abstract

Reaktor Daya Eksperimental (RDE) is an experimental power reactor based on HTGR technology that implements inherent safety system. Its safety systems are in compliance with “defense in depth” philosophy. RDE is also equipped with reactor cavity cooling system (RCCS) used to remove the heat transferred from the reactor vessel to the containment structure. The RCCS is designed to fulfil this role by maintain the reactor vessel under the maximum allowable temperature during normal operation and protecting the containment structure in the event of failure of all passive cooling systems. The performance and reliability of the RCCS, therefore, are considered as critical factors in determining maximum design power level related to heat removal. RCCS for RDE will use a novel shape to efficiently remove the heat released from the RPV through thermal radiation and natural convection. This paper discusses the calculation of RCCS thermal analysis during accident. The RPV temperature must be maintained below 65ºC. The accident is assumed that there is no electricity from diesel generator supplied to the blower. The methodology used is based on the calculation of mathematical model of the RCCS in the passive mode. The heat is released through cavity by natural convection, in which the RCCS is capable to withdraw the heat at the rate of 50.54 kW per hour.Keywords: Passive safety, RCCS, RDE, Thermal analysis
ANALYSIS OF COGENERATION ENERGY CONVERSION SYSTEM DESIGN IN IPWR REACTOR Ign. Djoko Irianto; Sriyono Sriyono; Sukmanto Dibyo; Djati Hoesen Salimy; Tukiran Surbakti; Rahayu Kusumastuti
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 24, No 1 (2022): February (2022)
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/tdm.2022.24.1.6414

Abstract

The acceleration of national development, especially in the industrial sector, requires an adequate national energy supply. There are various types of energy sources which include conventional energy sources as well as new and renewable energy sources including nuclear energy. The problem is how to utilize these energy sources into energy that is ready to be utilized. BATAN as a research and development institution in the nuclear field has taken the initiative to contribute to the development of technology for providing electricity and other thermal energy, particularly reactor technology as a power plant and a provider of thermal energy. This research aims to analyze the design of the IPWR type SMR reactor cogeneration energy conversion system. The IPWR reactor cogeneration energy conversion system which also functions as a reactor coolant is arranged in an indirect cycle configuration or Rankine cycle. Between the primary cooling system and the secondary cooling system is mediated by a heat exchanger which also functions as a steam generator. The analysis was carried out using ChemCAD computer software to study the temperature characteristics and performance parameters of the IPWR reactor cogeneration energy conversion system. The simulation results show that the temperature of saturated steam coming out of the steam generating unit is around 505.17 K. Saturated steam is obtained in the reactor power range between 40 MWth to 100 MWth. The results of the calculation of the energy utilization factor (EUF) show that the IPWR cogeneration configuration can increase the value of the energy utilization factor up to 91.20%.
SIMULATIONS ON NICKEL TARGET PREPARATION AND SEPARATION OF Ni(II)- Sunarhadijoso Soenarjo; Wira Rahman; Sriyono Sriyono; Triyanto Triyanto
GANENDRA Majalah IPTEK Nuklir Volume 14 Nomor 1 Januari 2011
Publisher : Website

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.268 KB) | DOI: 10.17146/gnd.2011.14.1.26

Abstract

SIMULATIONS ON NICKEL TARGET PREPARATION AND SEPARATION.OF Ni(II)-Cu(II) MATRIX FORPRODUCTION OF RADIOISOTOPE64Cu64Ni (p,n) 64  and retained on the column while the nickel was kept in the form of Ni2+  2+  2+ and CuCl while the nickel was totally in the form of Ni2+  while the nickel was found as both Ni2+ and NiCl   while the nickel was mostly in the form of Ni2+. The retained CuCl was then changed back into Cu2+     Keywords 64 Cu, Anion exchange chromatography.: Nickel target preparation, Radioisotope Cu-64, Separation of Ni(II)-Cu(II) matrix, Nuclear reaction of 64Ni(p,n) cation form andeluted out the column by using HCl 0.05 M. The 42– 4 2–.The best condition of separation was in HCl 8 M in which the radioactive copper was mostly in the form of CuCl 42– 42– . In the condition ofHCl 9 M, the radioactive copper was mostly in the form of CuCl 42– cation. It was found that the electroplating result from the acidic solution was more satisfied than that from the basic solution. By conditioning the matrix solution at HCl 6 M, the radioactivecopper was found in the forms of Cucation and eluted off from the column. The retained radioactive copper was then eluted out the column in the condition of dilute HCl changingback the copper anion complex into Cu42– Cu. The nickel target preparation was performed by means of electroplating method using acidic solution of nickel chloride - boric acid mixture and basic solution of nickel sulphate – nickel chloridemixture on a silver- surfaced-target holder. The simulated solution of Ni(II) – Cu(II) matrix was considered as thesolution of post-proton-irradiated nickel target containing both irradiated nickel and radioactive copper, but in thepresented work the proton irradiation of nickel target was omitted, while the radioactive copper was originallyobtained from neutron irradiation of CuO target. The separation of radioactive copper from the nickel target matrixwas based on anion exchange column chromatography in which the radiocopper was conditioned to form anioncomplex CuClg-spectrometric analysis showed a single strong peak at 511 keVwhich is in accord to g-annihilation peak coming from positron decay of Cu-64, and a very weak peak at 1346 keVwhich is in accord to g-ray of Cu-64.. The simulations on Nickel target preparation and separation of Ni(II)- Cu(II) matrix has been carried out as a preliminary study for production of medical radioisotope Cu-64 based onnuclear reaction of
ANALYSIS ON AlMg2 AS RSG-GAS CLADDING MATERIAL CORROSION IN CHLORIDE CONTAINING WATER Febrianto Bahar; Sriyono Sriyono; Geni Rina Sunaryo
GANENDRA Majalah IPTEK Nuklir Volume 21 Nomor 2 Juli 2018
Publisher : Website

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1382.298 KB) | DOI: 10.17146/gnd.2018.21.2.4271

Abstract

AnalYsis On AlMg2 AS RSG-GAS CLADDING material corrosion IN CHLORIDE CONTAINING WATER. The AlMg2is one of an alluminium alloy that used as cladding material for the RSG GA. Siwabessy (RSG-GAS) research reactor in Serpong, Indonesia. The reactor uses demineralized water as primary coolant with 6.5 to 7.5 of pH. A poor treatment of water in primary coolant can lead to the problem of AlMg2 integrity. The primary coolant concentration of chloride must lower than 0.0094 ppm to protect cladding corrosion. The purpose of this study is to determine the effect of temperature and chloride ion concentration to AlMg2. The method in this research is to observe the corrosion rate for AlMg2 material by using Potentiostat. The laboratory experiments were conducted in various temperatures (28, 35, 40 and 45°C) and concentration of sodium chloride of 0.005, 0.010, 0.015, 0.020, 0.025, 0.030 and 0.035 ppm. The results show the corrosion rates were very small, and the highest corrosion rate occurred is 1.23 x 10-3mpy in 0.035 ppm of NaCl at 45°C .
Temperature Dependence of Primary Species G(values) Formed from Radiolysis of Water by Interaction of Tritium β-Particles Sofia Loren Butarbutar; Sriyono Sriyono; Geni Rina Sunaryo
Jurnal Pengembangan Energi Nuklir Vol 19, No 1 (2017): Juni 2017
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2017.19.1.3134

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TEMPERATURE DEPENDENCE OF PRIMARY SPECIES G(VALUES) FORMED FROM RADIOLYSIS OF WATER BY INTERACTION OF TRITIUM β-PARTICLES. G(values) are important to understand the effect of radiolysis of Nuclear Power Plant (NPP) cooling water. Since direct measurements are difficult, hence modeling and computer simulation were carried out to predict radiation chemistry in and around reactor core. G(values) are required to calculate the radiation chemistry. Monte Carlo simulations were used to calculate the G(values) of primary species , H•, H2, •OH dan H2O2 formed from the radiolysis of tritium β low energy electron. These radiolytic products can degrade the reactor components and cause corrosion under the reactor operating conditions. G(values) prediction can indirectly contribute to maintain the material reliability. G(values) were calculated at 10-8, 10-7, 10-6 and 10-5 s after ionization at temperature ranges. The calculation were compared with the G(values) of g-ray 60Co. The work aimed to understand temperature effect on the water radiolysis mechanism by the tritium β electron. The results show that the trend similarity was found on the temperature dependence of G(values) of tritium β electron and g-ray 60Co. For tritium β electron, G(values) for free radical were lower than g-ray 60Co, but higher for molecular products as temperature raise at 10-8 and 10-7. The significant differences for these two type of radiations were on G(H2), G(•OH) and G(H•) at 10-6and 10-5 s above 200 oC.
Production Evaluation of Radioiodine-131 from Neutron Activated of Natural Tellurium Dioxide Target in PTRR-BATAN Sriyono Sriyono; Anung Pujianto; D. Agung Sarwono; Hambali Hambali; Abidin Abidin
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2019: PROSIDING SNTKK 2019
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Preliminary Study on Production Of 32P – Labeled Phosphate Chromic as A Material for Skin Patch Wira Y. Rahman; Endang Sarmini; Herlina Herlina; Abidin Abidin; Triyanto Triyanto; Hambali Hambali; Sriyono Sriyono; Triani Widyaningrum
Indonesian Journal of Pharmaceutical Science and Technology Suppl. 2, No. 3 (2019)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.919 KB) | DOI: 10.24198/ijpst.v1i3.20982

Abstract

Keloids are skin disorders or benign tumours that are due to abnormal wound healing in the binding tissue after a trauma, inflammation, surgical wounds, or burns. Low activity radioisotopes have shown to be effective in curing or eliminating keloids on the skin. One of these radioisotopes is phosphorus-32 (32P), a beta (β-) emitter with a half-life of 14.3 days. This radioisotope can also be developed for the treatment of keloid and skin tumours. Currently, keloid is treated by a conventional method e.g.by applying the bulk of 32P radioisotope directly on keloid area. However, this method is considered inefficient and less secure. The purpose of this research is to obtain a technology for preparing of 32P-labeled skin patch. The first step of this research is to produce 32P-labeled chromic phosphate (Cr32PO4) colloids, through condensation involving oxidation-reduction reaction. In this step, Cr (VI) is reduced to Cr (III) to form Cr32PO4 with particle size of <1 μm.  These particles (Cr32PO4) are to expect to distribute evenly when mixed with silicon to form skin patch which will not decompose easily. Characterization of the prepared Cr32PO4colloids gave a yield of 97,8% with particle size of greater than > 1μm.  Further study needs to be performed in due time in order to have Cr32PO4 colloids with a suitable particle size.Key words: keloid, chromic phosphate colloid, skin patch, condensation, oxidation-reduction reaction
Desain dan Performa Prototipe Generator 99Mo/99mTc dengan Kolom Material Berbasis Zirkonium dan Kolom Alumina Marlina Marlina; Sriyono Sriyono; E. Lestari; Abidin Abidin; H. Setiawan; Kadarisman Kadarisman
Jurnal Kimia dan Kemasan Vol. 38 No. 2 Oktober 2016
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1854.602 KB) | DOI: 10.24817/jkk.v38i2.2703

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Hingga saat ini radioisotop tehnesium-99m (99mTc) masih banyak digunakan di bidang kedokteran nuklir di seluruh dunia. Hal ini karena 99mTc memiliki waktu paro 6 jam dan memancarkan gamma murni pada energi 140 keV sehingga merupakan radioisotop yang ideal untuk diagnosis. 99mTc dapat dihasilkan salah satunya dari generator 99Mo/99mTc. Prototipe generator 99Mo/99mTc dibuat dengan menggunakan Molibdenum-98 (98Mo) alam hasil iradiasi neutron, yang dilengkapi dengan kolom berisi material berbasis zirkonium (MBZ) dan kolom alumina. Penentuan performa prototipe generator dilakukan dengan menentukan yield 99mTc, kualitas larutan natrium pertehnetat (Na99mTcO4) yang dihasilkan, dan laju dosis pada permukaan prototipe generator. Yield 99mTc dari prototipe generator yaitu 76,95 ± 7,7%. Prototipe generator menghasilkan radioisotop 99mTc (Na99mTcO4) dengan karakterisitik yang memenuhi persyaratan US Pharmacopoeia, yaitu larutan jernih, memiliki pH 6 ± 0,6, kemurnian radionuklida (lolosan 99Mo) sebesar 0,022 μCi/mCi 99mTc, kemurnian radiokimia 99mTcO4- sebesar 99,85 ± 0,05%, kemurnian kimia (lolosan alumina) < 5 μg/mL, dan laju dosis permukaan prototipe sebesar 1,18 mSv/jam. Dengan demikian prototipe generator 99Mo/99mTc ini sudah menunjukkan performa yang baik dalam menghasilkan radioisotop 99mTc untuk keperluan medis dan memiliki laju dosis yang aman, namun perlu ditingkatkan kembali yieldnya. 
Legal Protection Of Participants Applications For Land Certificates Through Complete Systematic Land Registration (PTSL) In Blora Regency Sriyono Sriyono; Amin Purnawan
Jurnal Daulat Hukum Vol 3, No 1 (2020): March 2020
Publisher : Magister of Law, Faculty of Law, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jdh.v3i1.8431

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The ATR / BPN Ministry launched a Systematic Complete Land Registration (PTSL) as a National Priority Program. This program is intended for middle to low income groups who can have land rights certificates at a low cost, as well as to provide legal certainty guarantees to holders of land rights. One important thing that must be considered in the implementation of PTSL is the availability of laws and regulations that protect the PTSL process and products. The formulation of the problem in this research is what is the form of legal protection for participants in a complete systematic land registration program (PTSL) in Blora Regency. The method used is sociological juridical. The specifications in this study are descriptive analysis. The data used for this study are primary and secondary data obtained from the field observation, interviews, and literature study methods. Based on the research concluded with the Regulation of the Minister of Agrarian Spatial Planning / Head of the National Land Agency Number 6 of 2018 On Complete Systematic Land Registration if there are parties who feel their interests are harmed, they can submit an objection to the official who issues the discretionary decision.Keywords: Legal Protection; Land Rights Certificate; Complete Systematic Land Registration.
UPAYA PERLINDUNGAN TERHADAP AIR TANAH DARI KERUSAKAN SEBAGAI DAMPAK PENGEMBANGAN PEMUKIMAN (Studi Kasus di Kabupaten Sukoharjo Sriyono Sriyono
Jurnal Teknik Sipil dan Arsitektur Vol. 2 No. 4 (2002): jurnal teknik sipil dan arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui efektifitas peraturan perlindungan air tahan terhadap dampak pengembangan permukiman masalah apa yang terjadi dan pola perlindungan yang telah ada adapat dikembangkan. Tujuan penelitian ini untuk mengetahui apakah upaya perlindungan sember air bawah tanah terhadap dampak pengembangan permukiman di Kabupaten Sukoharjo merupakan masalah-masalah apa yang terjadi dalam pelaksanaan pembangunan pemukiman, upaya-upaya apakah yang dapat dilakukan untuk mengatasi masalah-masalah tersebut, dalam rangka mengembangkan pola perlindungan hukum yang lebih baik. Metode penelitian yang digunakan adalah deskriptif dengan pendekatan kualitatif abstrak indikatif. Pendekatan yang dilakukan adalah yuridis empirisatau yuridis sosiologis. Data yang digunakan meliputi data primer dan data sekunder. Penelitian dilakukan di Kabupaten Sukoharjo. Areal permukiman yang diteliti dipilih secara “purposive”. Responden penelitian dipilih secara “non probability”. Responden diambil dari pengembang, masyarakat penghuni, aparat yang terkait. Data priper diperoleh dengan mempergunakan “content identification”. Analisis data secara kualitatif yaitu dengan model analisis interaltif. Hasil penelitian yang dilakukan menghasilkan temuan bahwa pada pola perlindungan sumber air bawah tanah dari kerusakan sebagai dampak dari pengembangan permukiman di Kabupaten Sukoharjo sudah dapat memberi hasil yang efektif. Dair data penelitian ini karena pengembangan permukiman dilakukan tidak pada daerah tangkapan hujan, ruang terbuka yang tersedia. Luas lahan yang dikembangkan masih memenuhi persyaratan yaitu lebih dari 40% penggunaan sumber air tanah oleh penghuni permukiman masih sangat terbatas. Masalah-maslah yang ditemukan antara lain belum lengkap peraturan perundangan yang diperlukan, belum ada kelembagaan yang secara khusus menangani perijinan dan pengawasan, fasilitas jalan permukiman berupa aspal sehingga tidak memberi efek resapan air, koefisien dasar bangunan yang melebihi standart karena belum adanya fasilitas sumur resapan masih kurangnya pemahaman tentang pengaturan arti penting sumber air bawah tanah. Pola perlindungan yang perlu dikembangkan berupa penyusunan Peraturan Daerah yang mencakup perijinan tentang pembangunan permukiman baru dan perijinan penggunaan/eksploitasi air tanah. Disamping itu, diperlukan pembentukan suatu kelembagaan yang terintregasi yang melibatkan instansi teknis terkait lainnya di bidang perijinan dan pengawasan terhadap eksploitasi air tanah. Dari hasil pembahasan didapat saran berupa perlu dilakukan penelitian labih lanjut pada berbagai daerah lain untuk digunakan sebagai perbandingan dalam rangka merumuskan pola perlindungan hukum yang lebih tepat terhadap air tanah dari kerusakan akibat pengembangan permukiman.