Improvements in the fabrication of HTR fuel elements

Brähler, Georg; Hartung, Markus; Fachinger, J.; Grosse, Karl-Heinz; Seemann, Richard

doi:10.1016/j.nucengdes.2011.10.036

Cited by 11 publications

(4 citation statements)

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“…System Studied: UO 2 Particles and Ultrapure Water. The material studied in this work was UO 2 tristucturalisotropic (TRISO) particles, which were provided by Professor Fachinger of FZ-Julich (Forschungszentrum Julich), and their synthesis is detailed in the work of Braḧler et al, 30 paticularly with a calcination step performed at 1600 °C for UO 2 crystallization. A UO 2 TRISO particle constitutes a UO 2based kernel (500 μm in diameter) composed of grains and grain boundaries (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…Also, the effect of H 2 produced by water radiolysis has not been sufficiently investigated to have a complete understanding of the involved complicated inhibition mechanism. 30 paticularly with a calcination phase performed at 1600°C for UO 2 crystallization. UO 2 TRISO particle constitutes a UO 2 based kernel (500 μm of diameter) composed by grains and grain boundaries (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Radiolytic Corrosion of Uranium Dioxide: Role of Molecular Species

et al. 2014

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radiolytic Corrosion of Uranium Dioxide: Role of Molecular Species

et al. 2014

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“…Although the HTGR fuel designs have their own complexity, they have developments and economical aspects of the fabrication processes [25]. In 2013, the German High Temperature Reactor Fuel Development Program successfully developed, licensed and manufactured many thousands of spherical fuel elements that were used to power the experimental AVR reactor and the commercial THTR reactor [26]. Furthermore, fuel elements were manufactured in production scale facilities containing near defect-free UO 2 TRISO coated particles and homogeneously…”

Section: Germany-france and Othersmentioning

confidence: 99%

The Strategy to Support HTGR fuels for The 10 MW Indonesia's Experimental Power Reactor (RDE)

Taryo

Ridwan²,

Sunaryo³

et al. 2018

urania

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STRATEGY TO SUPPORT HTGR FUEL FOR THE 10 MW INDONESIA'S EXPERIMENTAL POWER REACTOR (RDE). The Indonesia's 10 MW experimental power reactor (RDE) is developed based on high temperature gas-cooled reactor (HTGR) and the program of the RDE was firstly introduced to the Agency for National Development Planning (BAPPENAS) at the beginning of 2014. The RDE program is expected to have positive impacts on community prosperity, self-reliance and sovereignty of Indonesia. The availability of RDE will be able to accelerate advanced nuclear power technology development and hence elevate Indonesia to be the nuclear champion in the ASEAN region. The RDE is expected to be operable in 2022/2023. In terms of fuel supply for the reactor, the first batch of RDE fuel will be inclusive in the RDE engineering, procurement and construction (RDE-EPC) contract for the assurance of the RDE reactor operation from 2023 to 2027. Consideration of RDE fuel plant construction is important as RDE can be the basis for the development of reactors of similar type with small-medium power (25 MWe-200/300 MWe), which are preferable for eastern part of Indonesia. To study the feasibility of the construction of RDE fuel plant, current state of the art of the R&D on HTGR fuel in some advanced countries such as European countries, the United States, South Africa and Japan will be discussed and overviewed to draw a conclusion about the prospective countries for supporting the fuel for long-term RDE operation. The strategy and roadmap for the preparation of the RDE fuel plant construction with the involvement of national stakeholders have been developed. The best possible vendor country to support HTGR fuel for long-term operation is finally accomplished. In the end, this paper can be assigned as a reference for the planning and construction of HTGR RDE fuel fabrication plant in Indonesia.Keywords: RDE, Indonesia, HTGR, fuel, strategy.

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“…Bahan bakar bentuk prismatik dan pebble terdiri dari sejumlah besar partikel terlapisi. Bagian tengah dari partikel terlapisi adalah kernel yang dibuat dari uranium oksida (UO 2 ) [3,4], uranium karbida (UC+UC 2 ) [4], uranium oksikarbida (UCO) [4,5] dan uranium nitrida [6]. Kernel ini kemudian dilapisi dengan beberapa lapisan yang terdiri dari lapisan buffer, lapisan pyrolytic carbon (IPyC and OPyC) and silikon karbida (SiC) [3,7] untuk membentuk tri-structural isotropic (TRISO) [7] menggunakan alat fluidized bed chemical vapor deposition [8,9].…”

Section: Pendahuluanunclassified

Simulasi Diameter Gel Basah Pada Fabrikasi Kernel Yttria-Stabilized Zirconia Menggunakan Alat Gel-Casting

Yusnitha

Sarjono²,

Susilowati³

et al. 2018

urania

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Simulasi Diameter Gel Basah Pada Fabrikasi Kernel Yttria-Stabilized Zirconia Menggunakan Alat Gel-Casting. Pada proses pembuatan kernel yttria-stabilized zirconia (YSZ), broth diteteskan melalui alat gel-casting untuk membentuk gel basah YSZ. Broth adalah umpan alat gel-casting yang berupa larutan terdiri dari zirconium (IV) nitrate, yttrium (III) nitrate hexahydrate, urea, tetrahydrofurfuryl alcohol (THFA), dan poly vinyl alcohol (PVA). Parameter proses alat gel-casting seperti frekuensi vibrasi dan kecepatan aliran broth diatur untuk memperoleh bentuk dan ukuran diameter gel basah yang diinginkan. Alat gel-casting yang berada di PTBBN BATAN memiliki satu buah nozzle dengan diameter 1 mm. Kegiatan simulasi ini perlu dilakukan untuk mengurangi jumlah eksperimen di laboratorium sehingga mengurangi volume limbah yang diakibatkan trial and error dalam eksperimen. Selain itu, simulasi ini bertujuan untuk memprediksi diameter gel basah yang dihasilkan. Oleh karena itu, simulasi diameter gel basah perlu dilakukan dan diverifikasi dengan hasil eksperimen. Berdasarkan hipotesa, simulasi diameter gel basah dapat dilakukan dengan memperhitungkan parameter alat gel-casting seperti kecepatan aliran broth dan frekuensi vibrasi. Selain itu karakteristik dari broth seperti densitas juga mempengaruhi diameter gel basah. Diameter gel basah yang dihasilkan alat gel-casting diukur menggunakan alat mikroskop digital. Diameter gel basah dari eksperimen didekati menggunakan persamaan yang dimodifikasi dengan memperhitungkan frekuensi vibrasi, kecepatan aliran broth, konsentrasi metal dalam broth dan densitas broth. Hasil simulasi menunjukkan penyimpangan yang lebih kecil dari simulasi menggunakan persamaan sederhana yang hanya memperhitungkan frekuensi vibrasi dan kecepatan aliran broth.Kata kunci: simulasi, diameter, gel basah, broth, alat gel-casting.

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Improvements in the fabrication of HTR fuel elements

Cited by 11 publications

References 0 publications

Radiolytic Corrosion of Uranium Dioxide: Role of Molecular Species

Radiolytic Corrosion of Uranium Dioxide: Role of Molecular Species

The Strategy to Support HTGR fuels for The 10 MW Indonesia's Experimental Power Reactor (RDE)

Simulasi Diameter Gel Basah Pada Fabrikasi Kernel Yttria-Stabilized Zirconia Menggunakan Alat Gel-Casting

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