Current Status of Pyroprocessing Development at KAERI

Lee, Hansoo; Park, Geun-il; Lee, Jae Won; Kang, Kyoung-Ho; Hur, Jin‐Mok; Kim, Jeong-Guk; Paek, Seungwoo; Kim, In-Tae; Cho, IL-Je

doi:10.1155/2013/343492

Cited by 107 publications

(49 citation statements)

References 19 publications

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“…Major process equipment installed in PRIDE includes an electrolytic reducer, Cathode Processor, electrowinner, and waste molten salt treatment apparatus. Remote handling tasks such as process operation and maintenance in PRIDE are performed using 17 pairs of mechanical Master-Slave Manipulator (MSM) and a Bridge-transported Dual-arm Servo-Manipulator (BDSM), and material and equipment transfer are performed using crane systems [17]. The demonstration-scale hot cell facility of this study is as a new one that is to supersede PRIDE and is capable of satisfying the increased requirements of larger scale facilities.…”

Section: Previous Design Of a Large-scale Argon Cell Facilitymentioning

confidence: 99%

Equipment Layout Improvement for Large-Scale Hot Cell Facility Logistics

Yu¹,

Lim²,

Im³

et al. 2017

Science and Technology of Nuclear Installations

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This study presents approaches to equipment layout improvement for a large-scale hot cell facility. First, the original facility layout and target process are introduced, including the basic information and specifications. Second, the flow of process materials is analyzed and the relationships are evaluated in detail using a "from-to chart" and a "relationship chart" for the original layout, and the logistics are simulated using the selected discrete event simulator to calculate the traveling distances of process materials handled by teleoperated material handling systems. Third, the original layout is modified using the total closeness rating (TCR), and the efficiency and usage of the material handling system are calculated and compared with the original case to evaluate the efficiency improvement of the modified layout. This modification process, which included load reduction, enabled those aspects of the material handling system that would need to be changed to be identified; these changes were suggested by a quantitative analysis of the logistics between each pair of stations and intuitive rearrangement based on charts and figures. These approaches could be an initial step in the large-scale hot cell design process, with future work to follow.

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Section: Previous Design Of a Large-scale Argon Cell Facilitymentioning

confidence: 99%

Equipment Layout Improvement for Large-Scale Hot Cell Facility Logistics

Yu¹,

Lim²,

Im³

et al. 2017

Science and Technology of Nuclear Installations

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“…The details are shown in Table 6. From Table 6, the capital unit cost using Equation (10) was estimated to be 145 US$/kgU-TRU considering interest during depreciation periods over 60 years. Tables 7 and 8 show labor costs and utility service costs, respectively: Equation (10) shows the calculation method of the capital unit cost.…”

Section: Input Datamentioning

confidence: 99%

“…Temporary storage means spent fuel pools in nuclear power plant. Accordingly, the development of pyroprocessing technology and radioactive waste disposal technology is underway for recycling spent nuclear fuel with a long-term perspective to reduce spent nuclear fuel inventory [9,10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Unit Process Cost for an Engineering-Scale Pyroprocess Facility Using a Process Costing Method in Korea

Kim

Bang

2015

Energies

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Abstract:Pyroprocessing, which is a dry recycling method, converts spent nuclear fuel into U (Uranium)/TRU (TRansUranium) metal ingots in a high-temperature molten salt phase. This paper provides the unit process cost of a pyroprocess facility that can process up to 10 tons of pyroprocessing product per year by utilizing the process costing method. Toward this end, the pyroprocess was classified into four kinds of unit processes: pretreatment, electrochemical reduction, electrorefining and electrowinning. The unit process cost was calculated by classifying the cost consumed at each process into raw material and conversion costs. The unit process costs of the pretreatment, electrochemical reduction, electrorefining and electrowinning were calculated as 195

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“…Then, the metallic U/TRU product is provided for the metal fuel of the sodium-cooled fast reactor. The key unit processes of pyroprocessing are the electrolytic reduction (also called oxide reduction (OR)) and the electrorefining (ER) [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Separation of Electrolytic Reduction Product from Stainless Steel Wire Mesh Cathode Basket via Salt Draining and Reuse of the Cathode Basket

Choi

Lee

Heo

et al. 2017

Science and Technology of Nuclear Installations

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We demonstrated that the metallic product obtained after electrolytic reduction (also called oxide reduction (OR)) can be simply separated from a stainless steel wire mesh cathode basket only by using a salt drain. First, the OR run of a simulated oxide fuel (0.6 kg/batch) was conducted in a molten Li 2 O-LiCl salt electrolyte at 650 ∘ C. The simulated oxide fuel of the porous cylindrical pellets was used as a cathode by loading a stainless steel wire mesh cathode basket. Platinum was employed as an anode. After the electrolysis, the residual salt of the cathode basket containing the reduction product was drained by placing it at gas phase above the molten salt using a holder. Then, at a room temperature, the complete separation of the reduction product from the cathode basket was achieved by inverting it without damaging or deforming the basket. Finally, the emptied cathode basket obtained after the separation was reused for the second OR run by loading a fresh simulated oxide fuel. We also succeeded in the separation of the metallic product from the reused cathode basket for the second OR run.

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Current Status of Pyroprocessing Development at KAERI

Cited by 107 publications

References 19 publications

Equipment Layout Improvement for Large-Scale Hot Cell Facility Logistics

Equipment Layout Improvement for Large-Scale Hot Cell Facility Logistics

Analysis of Unit Process Cost for an Engineering-Scale Pyroprocess Facility Using a Process Costing Method in Korea

Separation of Electrolytic Reduction Product from Stainless Steel Wire Mesh Cathode Basket via Salt Draining and Reuse of the Cathode Basket

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