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ARIF NUGROHO
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METODE ANALISIS FISIKOKIMIA PADA BAHAN BAKAR U3SI2-AL DENSITAS 4,8 GU/CM3 PASCA IRADIASI ARIF NUGROHO; BOYBUL BOYBUL; DIAN ANGGRAINI; ASLINA BR. GINTING
Jurnal Forum Nuklir JFN Vol 9 No 1 Mei 2015
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.609 KB) | DOI: 10.17146/jfn.2015.9.1.3559

Abstract

METODE ANALISIS FISIKOKIMIA PADA BAHAN BAKAR U3Si2-Al  DENSITAS 4,8 gU/cm3 PASCA IRADIASI. Untuk melakukan uji PIE (Post Irradiation Examination) khususnya analisis fisikokimia terhadap PEB  U3Si2-Al dengan densitas 4,8 gU/cm3 pasca iradiasi telah dilakukan beberapa pembakuan metode. Pembakuan metode yang dilakukan antara lain metode penentuan distribusi hasil fisi, pemotongan, pelarutan PEB, sedangkan untuk pemisahan dan analisis isotop hasil fisi khususnya 134Cs/137Cs,  serta heavy element  isotop U dan Pu masih perlu dilakukan pengkajian. Tujuan penelitian ini adalah untuk mendapatkan parameter distribusi isotop hasil fisi, pemisahan dan analisis isotop hasil belah Cs  dari isotop  U dan Pu di dalam PEB U3Si2-Al densitas 4,8 gU/cm3 pasca iradiasi dengan burn up. Pembakuan metode dilakukan berdasarkan  metode ASTM dan hasil penelitian terhadap PEB U3Si2-Al dengan densitas 2,96 gU/cm3 pasca iradiasi. Analisis fisikokimia yang dilakukan terhadap PEB U3Si2-Al dengan densitas 2,96 gU/cm3 diperoleh kandungan isotop 137Cs sebesar 0,000753 g/g sampel, isotop 235U sebesar 0,032839 g/g sampel dan 239Pu 0,0000109 g/g sampel. Kandungan isotop di dalam PEB  U3Si2-Al densitas  2,96 gU/cm3  digunakan untuk perhitungan burn up.  Metode yang diperoleh siap digunakan untuk analisis fisikokimia terhadap PEB  U3Si2-Al densitas  4,8 gU/cm3  pasca iradiasi  setelah pelaksanaan  uji non destructive test, NDT selesai dilakukan di reaktor.
APLIKASI SPEKTROMETER EMISI PADA ANALISIS UNSUR-UNSUR BAHAN PADUAN ALUMINIUM AlMgSi-1 Dian Anggraini; Boybul .; Arif Nugroho
Jurnal Teknologi Bahan Nuklir Vol 1, No 2 (2005): Juni 2005
Publisher : PTBN - BATAN

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Abstract

ABSTRAK APLIKASI SPEKTROMETER EMISI PADA ANALISIS UNSUR-UNSUR BAHAN PADUAN ALUMINIUM AlMgSi-1. Analisis unsur-unsur kelumit (Si, Mn, Cu, Ti, Ni, Cr, Mg) dalam paduan aluminium AlMgSi-1 telah dilakukan dengan metode uji ASTM menggunakan alat spektrometer emisi. Analisis dilakukan setelah alat uji dikalibrasi dengan mengukur beberapa bahan standar aluminium dengan berbagai konsentrasi. Hasil kalibrasi berupa kurva kalibrasi, yang menggambarkan hubungan antara konsentrasi dan intensitas pengukuran. Dari hasil evaluasi terhadap kurva kalibrasi dengan menggunakan metode kuadrat terkecil (least square) didapatkan daerah pengukuran linier, persamaan linier dan koefisien regresi serta limit deteksi. Dari hasil tersebut diperoleh ketepatan cukup baik antara persamaan linier dengan data pengukuran yang ditunjukkan dari nilai koefisien regresi pengukuran (0,997 hingga 0,999) yang berada dalam daerah yang dipersyaratkan (0,96). Ketepatan dan ketelitian pengukuran diperoleh dari pengukuran bahan standar sebanyak 7 kali pengulangan yang memiliki konsentrasi dalam daerah linieritas. Uji kuadrat chi (chi square) dengan tingkat kepercayaan 95% menunjukkan bahwa presisi pengukuran masih dalam batas yang diterima, sedangkan akurasi pengukuran dihitung dengan membandingkan nilai hasil pengukuran dengan nilai acuan dan diperoleh berkisar antara 95% hingga 99,97%. Dengan menggunakan alat yang telah terkalibrasi tersebut di atas maka dilakukan analisis terhadap bahan AlMgSi-1. Secara kualitatif sebagian besar unsur yang terkandung dalam bahan AlMgSi-1 dapat terdeteksi. Diantara unsur-unsur Si, Mn, Cu, Ti, Ni, Cr dan Mg yang ditentukan secara kuantitatif, hanya unsur Cr yang konsentrasinya diperoleh secara lebih akurat. KATA KUNCI: Analisis unsur, Spektrometri emisi, Paduan aluminium ABSTRACT APPLICATION OF EMISSION SPECTROMETER FOR ANALYSES OF ALLOYING ELEMENTS OF ALUMINIUM ALLOY AlMgSi-1. Analyses of trace elements (Si, Mn, Cu, Ti, Ni, Cr, Mg) in aluminium alloy AlMgSi-1 were carried out using Emission Spectrometer (OES) in accordance with ASTM testing methods. The analyses were performed after the instrument was calibrated by measuring a number of aluminium standards at various concentrations. The calibration curves obtained depicted the correlation between standard concentration versus intensity. From the evaluation of calibration curves using the least square method, data on linear working range, linear equation, regression coefficient and detection limit were obtained. The results showed satisfactory precision between the linear equation and the measurement data, indicated by the fact that the regression coefficient values (0.997 up to 0.999) were within the required working area (0.96). The measurement precision and accuracy were acquired from the measurement of standard materials, repeated 7 times, in which the concentrations were found to be in the linearity range. Chi square test at 95% confidence level showed that measurement precision was within the acceptable limit, whereas themeasurement accuracy determined by comparing measurement results with referenced values was about 95% - 99.97%. Using the calibrated instrument, analyses on AlMgSi-1 alloyed samples were conducted. Most elements could be detected qualitatively. Among the quantitatively measured elements Si, Mn, Ti, Ni, Cr and Mg, only the concentration of Cr element could be determined accurately.FREE TERMS: Element analyses, Emission spectrometer, Aluminium alloys accurately.
PENENTUAN UMUR YELLOW CAKE SECARA RADIOKRONOMETRI Erlina Noerpitasari; Syamsul Fatimah; Iis Haryati; Yanlinastuti Yanlinastuti; Jan Setiawan; Boybul Boybul; Arif Nugroho
Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 26, No 2 (2020): Juni 2020
Publisher : website

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2020.26.2.6057

Abstract

PENENTUAN UMUR YELLOW CAKE SECARA RADIOKRONOMETRI. Penentuan umur yellow cake secara radiokronometri telah dilakukan. Penelitian ini bertujuan mendapatkan data umur yellow cake pada penyusunan basis data perpustakaan forensik nuklir. Radiokronometer yang digunakan yaitu 228Th/232Th. 232Th merupakan thorium yang secara alami terdapat dalam yellow cake dan telah mencapai kesetimbangan peluruhan menjadi 228Th, namun pada proses produksi yellow cake kesetimbangannya terganggu sehingga waktu dinolkan kembali. Sampel uji yaitu yellow cake Cogema, hasil tambang PTBGN di Kalan dan hasil samping produk pabrik Petrokimia Gresik. Tahapan yang dilakukan yaitu pelarutan sampel, pemisahan thorium dari uranium dengan metode kromatografi pertukaran kation menggunakan resin dowex 50W-X8, elektrodeposisi thorium dan analisis isotop menggunakan spektrometer alfa. Penentuan umur dilakukan dengan perhitungan rasio aktivitas 228Th/232Th dan iterasi rumus peluruhan. Berdasarkan hasil analisis isotop 228Th dan 232Th menggunakan spektrometer alfa dan hasil perhitungan umur, yellow cake Cogema tidak dapat ditentukan umurnya karena tidak mengandung 232Th. Diperoleh nilai umur yellow cake Petrokimia Gresik yaitu 9,90 tahun dengan bias 20,35 tahun dan nilai umur yellow cake PTBGN yaitu 12,85 tahun dengan bias >20,15 tahun dibandingkan dengan perkiraan waktu produksi yang diketahui. Bias yang diperoleh lebih tinggi jika dibandingkan dengan hasil penentuan umur yellow cake menggunakan radiokronometer 228Th/232Th oleh peneliti sebelumnya yaitu dengan bias kurang dari 10 tahun.Kata kunci: Yellow Cake, Thorium, Radiokronometri.
PROSES ELEKTRODEPOSISI UNTUK PENGUKURAN ISOTOP 242Pu DENGAN SPEKTROMETER ALPHA Boybul Boybul; Yanlinastuti Yanlinastuti; Arif Nugroho; Rosika Kriswarini; Aslina Br. Ginting
Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 26, No 3 (2020): Oktober, 2020
Publisher : website

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2020.26.3.6071

Abstract

OPTIMASI PROSES ELEKTRODEPOSISI UNTUK PENGUKURAN ISOTOP 242Pu DENGAN SPEKTROMETER ALPHA. Dalam penelitian ini digunakan metode elektrodeposisi untuk penyiapan sumber isotop 242Pu  untuk pengukuran dengan spektrometer alpha. Tujuan  penelitian ini adalah untuk mendapatkan parameter optimal proses elektrodeposisi sehingga diperoleh sumber alpha isotop 242Pu dengan spektrum yang baik dan hasil maksimal dari proses elektrodeposisi. Sampel standar  isotop 242Pu  dengan aktivitas tertentu dibuat dari larutan standar plutonium. Percobaan dilakukan untuk menetapkan parameter yang memiliki  pengaruh signifikan terhadap efisiensi proses elektrodeposisi.  Parameter proses elektrodeposisi yang dipelajari antara lain pengaruh waktu, arus listrik dan jarak anoda katoda menggunakan larutan elektrolit ammonium sulfat pH 3,5. Hasil optimasi proses elektrodeposisi diperoleh waktu optimum 2,5 jam, arus listrik 1,4 A dan jarak antara anoda katoda 10 mm. Hal ini menunjukkan bahwa parameter tersebut  merupakan kondisi terbaik untuk deposisi isotop 242Pu. Hasil pengukuran dengan spektrometri alpha menunjukkan bahwa resolusi spektrum yang baik untuk sumber isotop 242Pu, dengan kedapatulangan proses elektrodeposisi sebesar 95,25%, dengan presisi sebesar 2,82%.Kata kunci: Elektrodeposisi, isotop 242Pu, kuat arus, waktu, spektrometer alpha
THE KINETIC AND DIFUSSION ION EXCHANGE OF Cs ON ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Dian Anggraini; Noviarty Noviarty; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 9 No. 2 (2010)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The ion exchange of Cs on NH4-Zeolite which has been activated become a zeolite monocation has been conducted on natural zeolite from Bayah, Lampung, and Tasikmalaya. On these three types of zeolite, the process of ion exchange of Cs with ammonium ion was conducted at various time (from 1 hour up to 24 hours) and temperature (303 K and 323 K). Cation exchange kinetics and diffusion process on each type of zeolite was observed and calculated the parameters included diffusion coefficient and activation energy using Arrhenius formula. The study showed that diffusion coefficient from Cs-ions into zeolite of Bayah, Lampung, and Tasikmalaya almost same, which is about 2,3 10-13 , 2,3 10-13 and 2,1 10-13 m2.det.-1 at temperature 303 K, and 9,3 10-14, 9,6 10-14, and 9,6 10-14 m2.det.-1 at temperature 323 K. The parameter calculation result of ion exchange reaction is activation energy Ea (kJ/mol) on that types of zeolite are almost same value, which is 36.61, 36.61, and 31.09 for each zeolite of Bayah, Lampung, and Tasikmalaya. The study showed that Ea value was greater than the previous study by using artificial zeolite (zeolit-A with Ea = 9,96 kJ/mol), so it can be concluded that Cs-ions exchange into natural zeolite has a greater barrier because the composition of natural zeolite more complex which was might contain more than one types of zeolite structure.
ANALYSIS OF ISOTOPE Cs ON PROCESSING SEPARATION OF Cs AND ZEOLITE USING SPECTROMETRY-γ Arif Nugroho; Dian Anggraini; Noviarty Noviarty
Jurnal Zeolit Indonesia Vol. 9 No. 2 (2010)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The analysis of Cs-isotope was conducted on separation process of Cs 137 isotope using a Lampung zeolite. Analysis of Cs based on modification of ASTM E320-79 method. Modification process including a Cs separation by extraction using a TBP/OK and by direct sedimentation as CsClO4, which was subsequently applied using a zeolite. Cs-isotope measurement was conducted using spectrometer γ. The result of Cs 137 analysis through the direct sedimentation with zeolite obtained about 86,40% ± 0,1%, while the analysis of Cs-137 by extraction modification separated process which followed by catching zeolite obtained a recovery about 28,05% ± 5,28%, and by modification precipation process with ASM obtained a recovery about 52,55% ± 1,11%.
SELECTIVITY OF LAMPUNG ZEOLITE TOWARDS MATRICES CATIONS GENERATED FROM URANIUM FISSION Siti Amini; Dian Anggraini; Yusuf Nampira; Rosika Rosika; Noviarti Noviarti; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 2 No. 1 (2003)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Selectivity of zeolite-lampung (ZKK) towards some matrices cations generated from uranium fission products has been investigated using some typical fission product-non-radioactive cations by cation exchange batch-system process. The previous investigation showed that zeolite-lampung is effectively able to absorb cesium ion from radioactive waste, consequently the presence of others cations i.e. generated cations from the uranium fission products are assumed as the competitive cations which may affect the zeolite selectivity on to Cs exchanges, on the otherhand the Cs-exchange capacity of zeolite would decrease. The main matrices cations which present in the natural zeolite are K+, Na+ and Ca2+and those are generated from fission products such as Cs+, Ba2+, Sr2+ and Ce4+ exist in the nuclear spent fuel solution. The ion exchanges of counterpart cations in zeolites with that each of Cs+, Ba2+, Sr2+ and Ce4+ ion or/and its mixtures have been examined. The selectivity of zeolite onto mentioned exchanged cations has been shown by the correlation of fraction of the cations concentration in the zeolite (Az) towards that in equilibrated solution (As). The results show that the raw zeolite Lampung selectivity is decrease in order to Cs+> Ba2+= Sr2+ > Ce4+. The exchanged capacity of zeolite into Cs+ ion is decreased by the presence of combining ions of Ba2+, Sr2+ and Ce4+, and so are those competitive cations.
Cs ION EXCHANGE CAPACITY OF ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Noviarty Noviarty; Dian Anggraini; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Cs ions exchange process has been conducted on natural zeolite (from Bayah, Lampung, and Tasikmalaya) which was activated with ammonium chloride. NH4-zeolite which was formed, is used to exchanger or absorber material of Cs ions. The duration of ions exchange process was optimized by varying the stirring time of 1 hours, 2 hours, 3 hours, 4 hours, 5 hours, and 24 hours. In all three zeolite types was obtained the optimization process time are the contact time of 1 hours. Cation exchange capacity (CEC) of natural zeolite was determined by standard methods. Attempts to obtain a monocation zeolite as a NH4-zeolite effectively acquired about 88% which used as a exchanger or absorber Cs ions. The effectiveness of Cs ions Cation exchange capacity with the ammonium was determined by batch-exchange for 1 hour. The calculation result o effectiveness CEC-Cs are 1.4269 Meq/gram ± 0.0397, RSD: 2.79% for Bayah zeolite, 1.4476 Meq/gram ± 0.0103, RSD: 0.71% for Lampung zeolite, 1.4044 Meq/gram ± 0.0050, RSD: 0.36% for Tasikmalaya zeolite. Stability of Cs-zeolte bond against heat treatment was tested at temperature of 25°, 300°, 600 °, 900°, and 1200 °C. The result showed that the relea se of Cs-ions is not significant from zeolite structure. The heating below 900°C, the release of Cs-ions jus t occurs on the surface (it was not change the initial of zeolite structure), whereas above that temperature was occurs the changed of zeolite structure, although there was not visible the release of Cs-ions on leaching process at the water. The conclusion is all three types of natural zeolite was potentially to be used as Cs-ions isolate which is especially useful to absorbing Cs-radioactive isotope as a result from fission of nuclear fuel element.
DECENTRALIZATIONS WITHIN CITIES SERTA KEBERADAAN UNIT PELAKSANA ADMINISTRASI KEWILAYAHAN PEMERINTAH DAERAH (KECAMATAN BERDASARKAN UNDANG - UNDANG NOMOR 23 TAHUN 2014) Arif Nugroho
Sawala : Jurnal Administrasi Negara Vol. 4 No. 3 (2016)
Publisher : Program Studi Administrasi Negara Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.303 KB) | DOI: 10.30656/sawala.v4i3.242

Abstract

Kecamatan merupakan istilah  subdistrict  pemerintah daerah dan    berfungsi sebagai ujung tombak  dalam penyelenggaraan pemerintahan daerah serta menjadi garda terdepan dalam memanifestasikan tujuan pembangunan kesejahteraan rakyat. Keberadaan  subdistrict merupakan konsekuensi dari  implementasi konsep Decentralizations within cities. Undang-Undang Nomor 23 Tahun 2014 Tentang Pemerintahan  Daerah, menjelaskan bahwasanya Kecamatan hanyalah wilayah kerja Camat sebagai perangkat daerah, yang mewakili bupati/walikota di wilayah kerja tertentu.Artikel ini menggunakan pendekatan  kualitatif dengan metode diskriptif. Kesimpulan dalam artikel ini dapat diketahui bahwasanya Camat sebagai pimpinan tertinggi di Kecamatan harus dapat mengkoordinasikan semua urusan pemerintahan di Kecamatan. Kecamatan sebagai daya dukung pemerintah daerah dalam menjalankan aktivitas  kerja tidak  terlepas dari hubungan dengan organisasi vertikal  dan pihak lain termasuk satuan kerja perangkat daerah. Decentralizations within cities  yang berkonsekuensi pada pelimpahan  kewenangan pada dasarnya bertujuan untuk mendekatkan pelayanan kepada masyarakat dan seberapa besar tingkat Efektifitas organisasi kecamatan  ternyata
ANALISIS MENGENAI LUBANG-LUBANG KORUPSI DI SEKTOR BEA DAN CUKAI Ari fin; Arif Nugroho
Jurnal BPPK : Badan Pendidikan dan Pelatihan Keuangan Vol 9 No 2 (2016): Jurnal BPPK (printed version)
Publisher : Badan Pendidikan dan Pelatihan Keuangan - Kementerian Keuangan Republik Indonesia

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Abstract

Corruption in customs and excise sector full with political and economic motives, the perpetrator involvels Customs’ official and implementing officer at both central and local level. The main characteristic of corruption in the sector is to deliberately slow down or delay the document processing and inspection. This study aimed to analyzed : (i) the risks and opportunities for corruption in the sector of customs and excise ; an (ii) the prevention and eradication of corruption in the sector of customs and excise. The writer used a normative legal research method with legislation approach. In order to produce representative thought, the writer or used the relative theory approach ( deterrence ) created by cesare beccaria and Jeremy Bentham, containing a core of basic justification that the presence of a criminal lies on the objectives. The research results showed that the anti-corruption program was implemented by mapping or identification of sources of corruption. Combating corruption is not just thourgh prosecution and prevention, but a role model is highly needed.
Co-Authors Achmad Muzni Chasanudin Ahmad Syahrul Fauzi Ari fin ASLINA BR. GINTING Boybul . BOYBUL BOYBUL Boybul Boybul Delly Maulana Dian Anggraini Eka Dyah Setyaningsih Erlina Noerpitasari Erny Novianti Euis Paramita Fahrun Nisa Nur Laila Firmansyah, Riza Agung Frank Aligarh Gian Sumarna Iis Haryati Isa Adi subagjo Jan Setiawan Julizar Idris Jumanah Mohamad Rahmawan Arifin Ni Luh Putu Oktafiani Ariati Noviarti Noviarti Noviarty Noviarty Rosika Kriswarini Rosika Rosika Roynardus Sijabat Rozaq Arminnur Yuliawan Sherly Arsanti Nariswari Siti Amini Sri Runtiningsih Sukmajaya Syamsul Fatimah Vina Islami, Vina Widya Lelisa Army Yanlinastuti Yanlinastuti Yusuf Nampira