Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir最新文献

{"title":"Application of Group Method of Data Handling in financial analysis of metallurgical industry enterprises","authors":"I. Milojević, Miloš Miljković, Miloš Radosavljević","doi":"10.5937/bakar2202047m","DOIUrl":"https://doi.org/10.5937/bakar2202047m","url":null,"abstract":"In the process of financial analysis, an inevitable place belongs to the quantitative analytical methods. During the economic development, the analytical processes became more and more important, so that it conditioned their development. Applying various methods of analysis the financial statements such as the horizontal, vertical or ratio analysis, the operational management obtained the necessary information, but a new corpus of methods was constantly invented and developed for the strategic decision-making. In this context, the Data Mining methods also find their place. The subject of this paper is the application of one of the accepted methods of the Data Mining in the financial analysis on an example of a metal industry company, the so-called Group Method of Data Handling","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72703158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technology of surface exploitation and management of environmental protection","authors":"Ivan Jovanović, N. Staletović","doi":"10.5937/bakar2202031j","DOIUrl":"https://doi.org/10.5937/bakar2202031j","url":null,"abstract":"On the basis of data obtained by the exploratory drilling, the researched copper ore deposit belongs to a group of deposits related to intermediate volcanic - intrusive magmatic complexes. It is a compact ore body with the shape of an inclined cylinder and is composed of copper minerals together with the chloritized and kaolinized andesite. There is also an impact of technological parameters on the environment due to the exploitation of the ore deposit. The aim of this paper is to emphasize that it is important to manage the environment in surface exploitation of ore deposits.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74739852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of the lead and zinc mining and metallurgy in the \"Trepča\" mine-Stari Trg","authors":"Slobodan Trajković, B. Nikolić, Ž. Kamberović, Sanja Bajić","doi":"10.5937/bakar2202011t","DOIUrl":"https://doi.org/10.5937/bakar2202011t","url":null,"abstract":"After the migration of Serbs in 1690 and 1735, the exploitation of mines in the area of present-day Serbia ceased, and after a standstill of nearly 200 years, the mining and metallurgical activities in Serbia were activated in the second quarter of the 20th century. The first concessions were bought by England in 1926, then the mines in Stari Trg (1927), Kišnica (1927), Ajvalija (1930), Novo Brdo (1933) were activated, and the Flotation (1930) and Smelter with Lead Refinery began to operate (1939) in Zvečan. In Kosovska Mitrovica, the chemical industry began operating in 1961, the Zinc Metallurgy and Lead Battery Factory in 1967, and all production facilities were expanded and modernized several times. The most intensive production and investment period of the \"Trepča\" Combine was in the period 1965-1985, when \"Trepča\" was a well-known producer of lead, zinc, silver, gold, cadmium, bismuth and products made of these metals. After 1990, the production declined for several reasons and, in 1999, the international army stopped production in \"Trepča\". In the past twenty years, the production has not been completely renewed nor the status of the \"Trepča\" Combine has not been regulated.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86574893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OPTIMASI PARAMETER METODE PEMISAHAN RADIONUKLIDA 95Zr DALAM LARUTAN PELAT ELEMEN BAKAR U3Si2/Al TERIRADIASI","authors":"Yanlinastuti Yanlinastuti, Noviarty Noviarty, Iis Haryati, Ariyanti Saputri, Boybul Boybul, Supardjo Supardjo, Erlina Noerpitasari, A. Ginting","doi":"10.17146/urania.2021.27.3.6535","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6535","url":null,"abstract":"OPTIMASI PARAMETER METODE PEMISAHAN RADIONUKLIDA 95Zr  DALAM  LARUTAN PELAT ELEMEN BAKAR U3Si2/Al TERIRADIASI. Radionuklida 95Zr adalah salah satu radionuklida hasil belah pemancar radiasi-γ dan berumur paruh pendek sehingga dapat digunakan sebagai indikator burn up. Dalam pelat elemen bakar U3Si2/Al teriradiasi terdapat beberapa radionuklida hasil belah yang memancarkan radiasi α, β dan γ sehingga pada saat pengukuran menggunakan spektrometri-γ, radionuklida ini saling mengganggu mengakibatkan hasil pengukuran tidak akurat. Oleh sebab itu, perlu dilakukan pemisahan 95Zr sehingga pada saat pengukuran dengan spektrometer-γ diperoleh hasil yang akurat. Tujuan penelitian ini untuk mendapatkan parameter yang optimum terhadap pemisahan 95Zr dalam larutan pelat elemen bakar U3Si2/Al densitas 4,8 gU/cm3 teriradiasi dengan metode kolom penukar ion menggunakan resin Dowex 1x-8Cl- diameter 100-200 mesh. Parameter optimum yang diperoleh selanjutnya digunakan untuk pemisahan 95Zr dalam larutan pelat elemen bakar U3Si2/Al densitas 4,8 gU/cm3 teriradiasi. Dari hasil penelitian diperoleh parameter optimum keasaman H2SO4 pada umpan dengan konsentrasi 0,5 M, keasaman H2SO4 untuk elusi konsentrasi 1,0 M dengan recovery 98,20%. Berat resin untuk mengikat radionuklida 95Zr sebanyak 2,0 g dengan recovery 78,76%; volum umpan yang dibutuhkan sebanyak 50 µL dengan recovery 96,90% dan kecepatan alir  sebesar 0,1 mL/menit dengan recovery  96,72%. Parameter optimum tersebut digunakan untuk pemisahan larutan pelat elemen bakar U3Si2/Al densitas 4,8 gU/cm3 teriradiasi dengan kode Bottom (B), Middle (M) dan Top (T). Hasil pengukuran didapat rerata recovery pemisahan 95Zr masing-masing untuk kode B-1= 75,078%; B-2= 81,401%; M1=76,850%; M-2=83,806%; T-1=84,433%; dan T-2=81,728% dengan keberterimaan nilai CV repeatability lebih kecil dibandingkan dengan nilai CV Horwitz.  Kata kunci: kolom penukar ion, U3Si2/Al teriradiasi, radionuklida 95Zr,  spektrometer-γ, uji Horwitz.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"131 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77367903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH TEMPERATUR DAN KOMPOSISI Nb TERHADAP INTERDIFUSI PADUAN U-Zr-Nb","authors":"M. K. Ajiriyanto, M. Masrukan, Fajar Al Afghani, Yanlinastuti Yanlinastuti","doi":"10.17146/urania.2021.27.3.6503","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6503","url":null,"abstract":"PENGARUH TEMPERATUR DAN KOMPOSISI Nb TERHADAP INTERDIFUSI PADUAN U-Zr-Nb. Telah dilakukan simulasi percobaan intermik bahan bakar U-Zr-Nb dengan pelat aluminium. Mula-mula dibuat ingot paduan U-6Zr-2Nb, U-6Zr-5Nb, dan U-6Zr-8Nb menggunakan tungku peleburan busur listrik. Ingot yang diperoleh dipotong-potong menjadi berukuran ketebalan 2-3 mm dan diameter sekitar 5-6 mm selanjutnya ditutup menggunakan pelat Al pada salah satu sisinya serta dipress. Setelah dipress, ingot paduan U-6Zr-2Nb, U-6Zr-5Nb, dan U-6Zr-8Nb   dipanaskan pada temperature 350 dan 450 °C selama 1 jam. Setelah dipanaskan ingot dikenai beberapa pengujian yaitu mikrostruktur menggunakan mikroskop optik dan Scanning Electron Microscope (SEM) yang dilengkapi dengan Energy Dispersive Spectrometer (EDS), kekerasan menggunakan uji kekerasan mikro, dan fasa dengan alat X-ray diffractometer (XRD). Hasil pemeriksaan mikrostruktur menunjukkan masih terlihat dengan jelas batas antara lapisan (interface) U-6Zr-2Nb, U-6Zr-5Nb, dan U-6Zr-8Nb dengan lapisan Al. Semakin tinggi kandungan Nb semakin rapat  rapat interface antara kedua lapisan.  Pada pengujian kekerasan mikro terlihat bahwa kekerasan pada interface sulit diukur sedangkan pada daerah U-Zr-Nb menunjukkan kenaikan kekerasan pada pemanasan dari 350 menjadi 450 °C, sedangkan pada bagian Al terjadi penurunan kekerasan pada kenaikan temperatur pemanasan dari 350 menjadi 450 °C.  Terbentuk senyawa UO3 pada semua sampel uji sedangkan fasa γ-U terbentuk pada sampel U-6Zr-2Nb baik yang dipanaskan pada temperatur 350 maupun 450 °C.Kata kunci:  Intermik, paduan U-Zr-Nb, aluminium, mikrostruktur, kekerasan, fasa.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82203097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALISIS KETIDAKPASTIAN PENGUKURAN KEKUATAN TARIK DAN ELONGASI SPESIMEN SS304 BERBENTUK RING","authors":"Sri Ismarwanti, Jan Setiawan, M. K. Ajiriyanto, Rohmad Sigit","doi":"10.17146/urania.2021.27.3.6567","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6567","url":null,"abstract":"ANALISIS KETIDAKPASTIAN PENGUKURAN KEKUATAN TARIK DAN ELONGASI SPESIMEN SS304 BERBENTUK RING. Ketidakpastian adalah tolok ukur dari kehandalan suatu pengukuran. Salah satu pendekatan analisa ketidakpastian yang banyak digunakan adalah dengan menggunakan Guide to the expression of uncertainty in measurement (GUM). Langkah-langkah untuk menganalisa ketidakpastian dari suatu pengukuran telah dijelaskan secara rinci oleh pendekatan GUM. Analisa ketidakpastian dilakukan pada pengujian tarik untuk mengetahui ketertelusuran data yang diperoleh. Pengujian tarik menghasilkan data berupa kekuatan tarik dan elongasi dari material uji.  Kekuatan tarik adalah besaran yang melibatkan besaran gaya dan panjang. Elongasi adalah penambahan panjang saat dilakukan penarikan. Kekuatan tarik pada sampel berbentuk ring akan dipengaruhi oleh luas penampang pada kedua belah sisi ring ketika diberikan tegangan tarik. Sehingga untuk menentukan ketidakpastian pengujian tarik akan memerlukan analisa terhadap penyumbang ketidakpastian. Makalah ini memberikan penjelasan bagaimana cara untuk menganalisa ketidakpastian pengukuran kekuatan tarik dan elongasi pada sampel berbentuk ring. Selain itu juga akan diperoleh nilai ketidakpastian pengukuran kekuatan tarik dan elongasi SS304 berbentuk ring. Dari pengujian yang dilakukan dapat diketahui bahwa kekuatan tarik ring SS304 rata-rata adalah 631,070 ± 26,976 Nmm-2 dengan ketidakpastian diperluas sebesar 50,451 Nmm-2 pada tingkat kepercayaan 95%. Selain itu pada tingkat kepercayaan yang sama diperoleh hasil elongasi ring SS304 rata-rata 18,681% ± 2,425% dengan ketidakpastian diperluas sebesar 2,867%. Keberulangan data atau repeatability menjadi penyumbang terbesar terhadap ketidakpastian pengukuran kekuatan tarik dan elongasi ring SS304.Kata kunci: Ketidakpastian, GUM, kekuatan tarik, elongasi, ring SS304.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90095645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PEMISAHAN CESIUM DALAM BAHAN BAKAR U3Si2/Al DENSITAS 4,8 gU/cm3 BURN UP 60% POTONGAN BOTTOM","authors":"Ariyanti Saputri, Sutri Indaryati, Iis Haryati, Yanlinastuti Yanlinastuti, Hanifah Rifaatul Mahmudah, A. Ginting","doi":"10.17146/urania.2021.27.3.6571","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6571","url":null,"abstract":"PEMISAHAN CESIUM DALAM BAHAN BAKAR U3Si2/Al DENSITAS 4,8 gU/cm3 BURN UP 60% POTONGAN BOTTOM. Telah dilakukan pemisahan cesium dalam bahan bakar U3Si2/Al densitas 4,8 gU/cm3 burn up 60% menggunakan bahan zeolit Lampung pada metode penukar kation. Burn up bahan bakar pasca iradiasi dapat ditentukan dengan indikator burn up menggunakan isotop cesium. Pemisahan bertujuan untuk mendapatkan berat cesium yang akurat sehingga perhitungan nilai burn up secara merusak juga dapat dilakukan secara tepat. PEB U3Si2/Al dipotong pada bagian Bottom secara duplo lalu ditambahkan pelarut HCl 6 N dan HNO3 6N. Satu mL larutan bahan bakar U3Si2/Al dimasukkan ke dalam botol vial dan ditransfer dari hotcell 109 ke laboratorium radiasi aktivitas sedang (R.135). Larutan bahan bakar U3Si2/Al diencerkan menjadi 25 mL dan dipipet 50 µL ke dalam vial secara duplo dan ditambahkan 1000 mg zeolit Lampung, kemudian dilakukan pemisahan 134Cs dan137Cs dari 235U dengan metode penukar kation secara batch selama 60 menit. Hasil pemisahan diperoleh isotop 134Cs dan 137Cs dalam fasa padat, sedangkan uranium (238U, 235U, 234U) dan isotop lainnya dalam fasa cair. Besarnya berat isotop 134Cs dan137Cs selanjutnya diukur menggunakan spektrometer-γ. Hasil pemisahan diperoleh berat isotop 137Cs dan 134Cs dalam larutan PEB U3Si2/Al densitas 4,8 gU/cm3 burn up 60% potongan Bottom masing-masing B-1=0,00003283 g/0,036gPEB dan B-1= 0,000000147 g/0,036gPEB, sedangkan untuk potongan B-2=0,00003290 g/0,037gPEB untuk 137Cs dan B-2= 0,000000222 g/0,037gPEB untuk 134Cs. Pemisahan cesium dalam 50 µL larutan PEB U3Si2/Al burn up 60% potongan Bottom dengan metode penukar kation menggunakan zeolit Lampung seberat 1000 mg diperoleh hasil yang baik.Kata kunci:  U3Si2/Al densitas 4,8 gU/cm3, burn up 60%, cesium, pemisahan.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77619748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH PERLAKUAN PANAS TERHADAP PERILAKU TARIK DAN STRUKTUR MIKRO BAJA TAHAN KARAT AISI 304 PADA DAERAH SENSITISASI 600 – 700 °C","authors":"Sungkono Sungkono, Sri Ismarwanti","doi":"10.17146/urania.2021.27.3.6570","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6570","url":null,"abstract":"PERILAKU TARIK DAN STRUKTUR MIKRO BAJA TAHAN KARAT AISI 304 PASCA PERLAKUAN PANAS PADA DAERAH SENSITISASI 600 – 700 °C. Baja tahan karat AISI 304 digunakan sebagai komponen struktur reaktor daya tipe LWR. Dalam pembuatan komponen struktur, kualitas sambungan lasan SS 304 ditentukan oleh proses pendinginan dari temperatur austenit ke sensitisasi. Tujuan penelitian adalah mengetahui karakter kekuatan tarik, kekerasan dan struktur mikro SS 304 pada daerah sensitisasi 600-700 °C. Metoda penelitian yang digunakan adalah pengujian komposisi kimia, tarik, kekerasan, dan struktur mikro yang mengacu pada ASTM. Hasil penelitian menunjukkan bahwa kekuatan tarik SS 304 pasca perlakuan sensitisasi pada (600 °C, 30- 60 menit) dan (700 °C, 30-90 menit) relatif sama dan lebih rendah dibandingkan tanpa perlakuan panas, sedangkan pada (600 °C, 90 menit) relatif sama dengan sampel tanpa perlakuan panas. Struktur mikro SS 304 terdiri atas fasa ferit-d dan austenit serta presipitat khrom karbida. Kuantitas presipitat di batas butir menurun dengan bertambahnya temperatur dan waktu penahanan. Kekerasan pasca perlakuan sensitisasi pada 600 - 700°C relatif sama di base metal, dekat patahan dan daerah patahan. Ketangguhan retak terbaik diperoleh pada sampel SS 304 dengan perlakuan (700 °C, 90 menit).Kata kunci: baja tahan karat, sensitisasi, kekuatan tarik, kekerasan, struktur mikro, presipitat.","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81568596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY ON CRITICALITY AND NEUTRONIC SAFETY PARAMETERS OF NUSCALE FUEL ASSEMBLY","authors":"Z. Zuhair, W. Luthfi, R. A. P. Dwijayanto, S. Suwoto","doi":"10.17146/urania.2021.27.3.6509","DOIUrl":"https://doi.org/10.17146/urania.2021.27.3.6509","url":null,"abstract":"STUDY ON CRITICALITY AND NEUTRONIC SAFETY PARAMETERS OF NUSCALE FUEL ASSEMBLY. NuScale, a typical Pressurized Water Reactor (PWR) Small Modular Reactors (SMRs), offers a new opportunity for the future of nuclear industry. With 160 MW thermal power, NuScale has several advantages such as flexibility due to its modularity in construction. This work is focused on the study of criticality and neutronic safety parameters of NuScale fuel assembly using MCNP6 code and ENDF/B-VII library. The calculation results shows that criticality of fuel assembly type D is the highest among other assembly types because it has a fuel pin with pure UO2 without Gd2O3 concentration. The Doppler temperature coefficient (DTC) of fuel assembly type C is the most negative among other assemblies due to Doppler broadening effect on resonance region of capture cross section of 238U which is the highest concentration. The moderator temperature coefficient (MTC) of fuel assembly type D is the most negative among the other assembly types. The effective delayed neutron fraction (βeff) does not reflect a consistent trend among fuel assembly types. Fuel assembly type D shows the highest prompt neutron lifetime (ℓ) while the highest neutron generation time (Ʌ) is shown in assembly type C. It can be concluded that this study provides adequate results that can be used as a first step to carry out the neutronic computation and analysis of the NuScale full core.Keywords: Criticality, safety parameters, NuScale fuel assembly, MCNP6, ENDF/B-VII. ","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"298 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74784060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KARAKTERISASI TERMAL PEB U-7Mo/Al SEBAGAI BAHAN BAKAR REAKTOR RISET","authors":"Sayyidatun Nisa, Ariyanti Saputri, Sutri Indaryati, Noviarty Noviarty, Supardjo Supardjo, A. Ginting","doi":"10.17146/urania.2021.27.2.6420","DOIUrl":"https://doi.org/10.17146/urania.2021.27.2.6420","url":null,"abstract":"KARAKTERISASI TERMAL PEB U-7Mo/Al SEBAGAI BAHAN BAKAR REAKTOR RISET. Bahan bakar berbasis UMo/Al merupakan kandidat bahan bakar reaktor riset dan sebagai alternatif pengganti bahan bakar U3Si2/Al. Hal ini disebabkan karena paduan UMo/Al memiliki densitas uranium yang lebih tinggi yaitu sekitar 16,4 g/cm3 dibandingkan dengan U3Si2/Al sebesar 12,2 g/cm3. Selain itu, paduan UMo mempunyai tampang lintang serapan neutron rendah dan proses olah ulang relatif mudah. Paduan U-7Mo/Al mampu mempertahankan fasa γ-U selama proses iradiasi, sehingga stabilitas bahan bakar di dalam reaktor tetap terjaga.  Paduan U-7Mo telah difabrikasi menjadi mini pelat PEB U-7Mo/Al. Tujuan dari penelitian ini adalah mengetahui karakteristik termal dari PEB U-7Mo/Al sebagai masukan kepada fabrikator bahan bakar reaktor riset dalam pembuatan bahan bakar berbasis UMo/Al. Karakterisasi termal dilakukan terhadap logam uranium, molybdenum, paduan UMo dan PEB U-7Mo/Al mengguakan Differential Scanning Calorimetry (DSC) Setaram. Hasil karakterisasi termal menunjukan bahwa PEB U-7Mo/Al stabil terhadap termal hingga 600 °C, karena pada temperatur 632,962 °C PEB U-7Mo/Al telah mengalami reaksi termokimia endotermik dengan DH= 144,318 J/g. Pada 656,186 ºC terjadi peleburan matriks Al dan kelongsong AlMg2 dalam PEB U-7Mo/Al dengan DH = 144,318 J/g. Pada temperatur 952,810 ºC hingga 1106,050 ºC, lelehan matriks Al berdifusi dengan UMo membentuk senyawa U(Mo,Al)x metastabil dan pemanasan hingga temperatur hingga 1211,760 ºC terbentuk layer UAlx (UAl2, UAl3 dan UAl4) dengan DH= –22,721 J/g. Kata kunci: Sifat termal, DSC, PEB UMo/Al, reaktor riset. ","PeriodicalId":23401,"journal":{"name":"Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86672961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}