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All Journal SIGMA EPSILON - Majalah Ilmiah Teknologi Keselamatan Nuklir Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega
Sriyono Sriyono
Pusat Teknologi dan Keselamatan Reaktor Nuklir - BATAN
Computer Science & IT Energy Materials Science & Nanotechnology

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WATER CHEMISTRY ANALYSIS IN RSG-GAS SECONDARY COOLING SYSTEM Rahayu Kusumastuti; Diyah Erlina Lestari; Sriyono Sriyono; Geni Rina Sunaryo
SIGMA EPSILON - Buletin Ilmiah Teknologi Keselamatan Reaktor Nuklir Vol 20, No 2 (2016): November 2016
Publisher : Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.992 KB) | DOI: 10.17146/sigma.2016.20.2.3513

Abstract

The G.A Siwabessy reactor (RSG-GAS) located in the Puspiptek area uses water as a coolant. The water as a coolant will contact directly with the component or structure of the reactor, that a chemical reac- tion between water and those components might cause the possibility of corrosion process. Therefore, cooling water quality will determine the integrity of reactor components or structures. The research described in this paper was conducted in order to monitor the quality of secondary cooling water, so that the water quality specifications is maintained and the reactor can be safely operated. One way to monitor the cooling water quality is by performing analysis into the secondary cooling water and raw water on June 6, 2016. The methodology used was by analysing the pH value using a pH-meter, conductivity value using Conductivity-meter, water hardness analysis, and analysis for some chemical elements such as Cl-, SO42-, Fe, P using calibrated Spectrophotometer DR / 2400. Corrosion rate of the carbon-steel as the piping material of secondary cooling system under environmental corrosion condition was also analyzed using the Potentiostat. From those performed analysis, the overall measured values are still below the standard values as required in the RSG-GAS safety analysis report document, meaning that the water quality management of the secondary coo- ling system has been well performed so far. 
OPTIMASI LAJU ALIR MASSA DALAM PURIFIKASI PENDINGIN RGTT200K UNTUK PROSES KONVERSI KARBONMONOKSIDA Sumijanto Sumijanto; Sriyono Sriyono
JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA Vol 18, No 1 (2016): Februari 2016
Publisher : Pusat Teknologi Dan Keselamatan Reaktor Nuklir (PTKRN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.794 KB) | DOI: 10.17146/tdm.2016.18.1.2339

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ABSTRAK OPTIMASI LAJU ALIR MASSA DALAM PURIFIKASI PENDINGIN RGTT200K UNTUK PROSES KONVERSI KARBONMONOKSIDA. Karbonmonoksida adalah spesi yang sulit dipisahkan dari helium pendingin reaktor karena mempunyai ukuran molekul relatif kecil sehingga diperlukan proses konversi menjadi karbondioksida. Laju konversi karbonmonoksida dalam sistem purifikasi dipengaruhi oleh beberapa parameter diantaranya konsentrasi, temperatur dan laju alir massa. Dalam penelitian ini dilakukan optimasi laju alir massa dalam purifikasi pendingin RGTT200K untuk proses konversi karbonmonoksida. Optimasi dilakukan melalui simulasi proses konversi karbonmonoksida menggunakan perangkat lunak Super Pro Designer. Laju pengurangan spesi reaktan, laju pertumbuhan spesi antara dan spesi produk dalam kesetimbangan reaksi konversi dianalisis untuk memperoleh optimasi laju alir massa purifikasi terhadap proses konversi karbonmonoksida. Tujuan penelitian ini adalah menyediakan data laju alir massa purifikasi untuk pembuatan dasar desain sistem purifikasi helium pendingin RGTT200K. Hasil analisis menunjukkan bahwa pada laju alir massa 0,6 kg/detik proses konversi belum optimal, pada laju alir massa 1,2 kg/detik mencapai optimal dan pada laju alir 3,6 kg/detik s/d 12,0 kg/detik tidak efektif. Untuk memdukung dasar desain sistem purifikasi helium pendingin RGTT200K maka laju alir massa purifikasi untuk proses konversi karbonmonoksida digunakan laju alir massa 1,2 kg/detik. Kata kunci: Karbonmonoksida, konversi, purifikasi, laju alir massa, RGTT200K.  ABSTRACT OPTIMIZATION OF MASS FLOW RATE IN RGTT200K COOLANT PURIFICATION FOR CARBONMONOXIDE CONVERSION PROCESS. Carbonmonoxide is a species that is difficult to be separated from the reactor coolant helium because it has a relatively small molecular size.  So it needs a process of conversion from carbonmonoxide to carbondioxide. The rate of conversion of carbonmonoxide in the purification system is influenced by several parameters including concentration, temperature and mass flow rate. In this research, optimization of the mass flow rate in coolant purification of RGTT200K for carbonmonoxide conversion process was done. Optimization is carried out by using software Super Pro Designer. The rate of reduction of reactant species, the growth rate between the species and the species products in the conversion reactions equilibrium were analyzed to derive the mass flow rate optimization of purification for carbonmonoxide conversion process. The purpose of this study is to find  the mass flow rate of purification for the preparation of the basic design of the RGTT200K coolant helium purification system. The analysis showed that the helium mass flow rate of 0.6 kg/second resulted in an unoptimal conversion process. The optimal conversion process was reached at a mass flow rate of 1.2 kg/second. A flow rate of 3.6 kg/second – 12 kg/second resulted in an ineffective process. For supporting the basic design of the  RGTT200K helium purification system, the mass flow rate for carbonmonoxide conversion process is suggested to be1.2 kg/second . Keywords: Carbonmonoxide, conversion, purification, mass flow rate, RGTT200K. 
Co-Authors Diyah Erlina Lestari Geni Rina Sunaryo Rahayu Kusumastuti Sumijanto Sumijanto