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All Journal Jurnal Teknologi Bahan Nuklir Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir Jurnal Intek Akuakultur Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Computer Science and Informatics Engineering (J-Cosine) Jurnal Tera Akuntansi: Jurnal Riset Ilmu Akuntansi Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Tri Yulianto
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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KARAKTERISASI KANDUNGAN URANIUM DAN UNSUR JEJAK PELET SINTER UO2 UNTUK FORENSIK NUKLIR Torowati; Ngatijo; Rahmiati; Deni Mustika; Erilia Yusnitha; Tri Yulianto; Jan Setiawan
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 27 No. 1 (2021): Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2021.27.1.6224

Abstract

Nuclear forensics is one of the important tools in nuclear security related to law enforcement. Nuclear materials and radioactive materials have potential hazards in terms of safety, health, up to threats to the nuclear security. In nuclear forensics, fingerprints are the characteristics of nuclear materials and radioactive materials which provide information on the origins of the nuclear materials, from where data of nuclear materials and radioactive materials are expected to be collected. The data can be obtained from characterization by physical and chemical testing. The physical tests include visual observations, dimensions, and phases while chemical tests cover elemental analysis of the nuclear materials and analysis of elements concentration in the nuclear materials. In this study, analysis of uranium and trace elements contents in uranium dioxide pellets was carried out in PTBBN - BATAN with the purpose to collect the fingerprint for nuclear forensics. The analysis of uranium content was conducted by potentiometric titration and the trace elements content was analyzed by atomic absorption spectrophotometric method. The results show that uranium content of the nuclear materials tested has the average results from 87% to 88%, indicating that the materials are UO2. The analysis of trace elements content was done to UO2 of varied enrichment level and the results show that the trace elements are not similar, which informs about the level of enrichment of the uranium dioxide pellets. These data can be used as fingerprint for nuclear forensics that can assist the investigators in the identification of nuclear forensics when misuse of nuclear materials occurs.
FABRIKASI MIKROSFIR UO2 MENGGUNAKAN TEKNIK AERASI Meniek Rachmawati; Etty Mutiara; Tri Yulianto
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 22 No. 2 (2016): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2016.22.2.3089

Abstract

It has been developed a fabrication process of low density UO2 microspheres for direct feed in pelletization process of PHWR advanced reactor fuel. The fabrication has been implemented by a sol-gel method using aeration technique on the sol / broth with external methods and three variations of gelation. In the aeration technique, broth is directly prepared in gelation mode without one night settling time. The aeration technique is the opposite of the deaeration technique, which is used in fabricating microspheres HTGR fuel. The broth which has been prepared with a mole ratio of NO3 / U between 1.5 to 1.7 with pH solution of 1.6 and viscosity between 630-660 cP directly to be gelated in three ways of gelation. The process of both gelation method 1 and method 2 is implemented by passing through the broth to a dispersion nozzle with 1 mm of diameter which is vibrated by an electromagnetic vibrator at 150 Hz with medium for free fall droplet differently before entering into a solution of NH4OH, while the gelation method 3 implemented manually. The wet UO2 microspheres derived from the three ways of gelation above are treated by heating process at the same way that is dried at a temperature of 85 ºC and 220 ºC each respectively for 1 hour, followed by a calcination process of microspheres UO2 for 1 hour at a temperature of 500 ºC in gaseous medium of O2 and a reduction process at a temperature of 600 ºC in gaseous mixture of N2 and H2 medium for 1 hour. The UO2 microspheres gelation of method 3 are chosen to be sorted and characterized. The characterization results provide the characteristics data of UO2 microspheres in the form of microspheres diameter of 900 μm, tap density of 1.90 g/cm3 and specific surface area of 6 m2/g. The results of the analysis and characterization are then compared to other data of other research so that it can be concluded that the use of such an aeration technique on the broth can produce low density UO2 microspheres that qualify as direct feed for fuel pelletization process of the advanced PHWR and advanced PWR. The fabrication using the aeration technique with gelation method 2 has the greatest opportunity to produce UO2 microspheres with a high production rate and certain characteristics if it is implemented by resetting the rate of dispersion and the free fall droplet duration.
Co-Authors Agus Haryanto Andre Jayardi Arman Syahroni Arman Bambang Herutomo Deni Mustika Dewi Agustina Iryani Dwi Septiani Putri Elbiansyah Putra Elbiansyah Erilia Yusnitha Etty Marti Wigayanti Etty Mutiara Fauzannadi Fauzannadi Futichah . Henky Irawan I Wayan Agus Arimbawa Ida Bagus Ketut Widiartha Imay Jullianty Indra Gumay Febryano Izal Izal Jan Setiawan Maman Kartaman Ajiriyanto Meniek Rachmawati Monalisa Nia Novita Panjaitan Muhammad Agi Saputra Agi Muhammad Aulia Zuber Matondang Ngatijo Ngatijo Ngatijo Odi Buana Hutapea Rafika Mulia Rahmiati Rahmiati Rahmiati Refa Artika Rika Wulandari Rohmad Sigit rusna benedikta hasibuan Sedarman Hati Halawa Shavika Miranti Suhaili Sutawi Gusnadi Torowati Torowati Torowati Tri Hardiyanti Udin Hasanudin Untung Simanjuntak Untung Simanjuntak Wahyu Hidayat Winter Dewayatna Wiwin Kusuma Atmaja Putra