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All Journal Jurnal Ilmiah Aplikasi Isotop Radiasi Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Rosika Kriswarini
Pusat Teknologi Bahan Bakar Nuklir - BATAN
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Materials Science & Nanotechnology

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Pengaruh Ukuran Partikel Zeolit dalam Pemisahan Cesium dari PEB U3Si2/Al Pasca Iradiasi Neutron Menggunakan Metode Penukar Kation Rosika Kriswarini; Arif Nugroho; Boybul Boybul; Sutri Indaryati
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 15, No 1 (2019): JUNI 2019
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.636 KB) | DOI: 10.17146/jair.2019.15.1.4656

Abstract

Pemisahan cesium dari Pelat Elemen Bakar Nuklir (PEB) U3Si2/Al pasca iradiasi menggunakan metode penukar kation dengan variasi ukuran partikel zeolit telah dilakukan. Teknik pemisahan cesium dengan menerapkan metode absorbsi dan penukar kation menggunakan zeolit Lampung memberikan efisiensi yang besar. Pemisahan cesium dari hasil fisi lainnya seperti 235U, 89Kr, 144Ba, 90Sr, 134Xe, 96Rb perlu dilakukan karena isotop 137Cs digunakan sebagai monitor burn up. Dalam penelitian ini dipelajari aspek pengaruh ukuran partikel terhadap efisiensi pemisahan cesium pada waktu kontak dan jumlah zeolit yang optimum. Cuplikan larutan PEB U3Si2/Al densitas 2,96 gU/cm3 pasca iradiasi sebanyak 150 µL diencerkan menggunakan HCl 0,1N menjadi 2 mL. Pemisahan cesium dalam larutan cuplikan dilakukan menggunakan zeolit Lampung dengan variabel ukuran partikel -100+170 mesh, -170+270 mesh, -270+400 mesh dan -400 mesh. Hasil yang diperoleh menunjukkan bahwa zeolit dengan ukuran partikel -270+400 mesh dengan berat 1 g dan waktu pengadukan selama 1 jam diperoleh kandungan isotop 137Cs dalam 150 µL larutan pasca iradiasi sebesar 0,0543 µg dengan recovery sebesar 99,1%.
FENOMENA KOROSI ZIRKALOY-2 DAN ZIRKALOY-4 DALAM MEDIA LARUTAN NaCl SECARA ELEKTROKIMIA Dian Anggraini; Maman Kartaman Ajiriyanto; Rosika Kriswarini; Yanlinastuti Yanlinastuti
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 21 No. 3 (2015): 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.2015.21.3.2465

Abstract

Zircaloy-2 and zircaloy-4 are used as cladding material in Light Water Reactor, (LWR), Boiling Water Reactor (BWR) and Pressurized Water Reactor (PWR). During its use in the spent fuel pool may interact between the cladding and seawater in case of abnormal condition. Chloride ion which contained in seawater has the potential for being corrosion in cladding material. The aim of this work was knowing zircaloy-2 and zircaloy-4 corrosion phenomena in NaCl medium by corrosion parameter determination with polarization resistance technique, tafel, and potentiodynamic. Samples are zircaloy-2 and zircaloy-4 pieces material with 1x1 cm dimension. The samples are mounting and soldered with copper wire, then the sample surface are polished by 1200 grade grinding paper. Corrosion test was done with corrosion cell that was completed by electrode standard (saturated calomel), electrode buffer (graphite) and work electrode (sample). Solvent medium was NaCl solution with concentration 3.5 %; 0.35 %; and 0.175 %. The result showed that ion Clˉ contained in NaCl which were concentration area from 0.175 % to 3.5 % did not affect corrosion mechanism. The corrosion type in potential range ± 250 mV to E­­corr was uniform corrosion in ZrO­2 oxide form. Zirkaloy-2 and zirkaloy-4 corrosion rate in 3.5 % NaCl concentration were obtained 6.39×10-3 and 7.40×10-3 mpy respectively. Corrosion phenomenon which was observed by potentiodynamic technique (± 1000 mV to Ecorr) showed that zirkaloy-2 and zirkaloy-4 underwent passivation and pitting corrosion. Pitting potential zirkaloy-2 and zirkaloy-4 were obtained -452.8 mV and -182.8 mV severally.
Co-Authors Arif Nugroho Boybul Boybul Dian Anggraini Maman Kartaman Ajiriyanto Sutri Indaryati Yanlinastuti Yanlinastuti