BA4508 Nuclear energy solutions

2024

A control oriented strategy of disruption prediction to avoid the configuration collapse of tokamak reactors

Murari, A., Rossi, R., Craciunescu, T., Vega, J., Aho-Mantila, L., Airila, M., Hakola, A., Kaltiaisenaho, T., Kirjasuo, A., Leppänen, J., Likonen, J., Salmi, A., Tala, T., Gelfusa, M. (Corresponding Author) & JET Contributors, 2024, In: Nature Communications. 15, 2424.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

3 Citations (Scopus)

Dismantling of the FiR 1 TRIGA reactor in Espoo, Finland

Auterinen, I., Airila, M., Räty, A., Kivelä, P. & Helin, J., 2024, European Research Reactor Conference RRFM2024 - Proceedings. European Nuclear Society (ENS), p. 279-288 10 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Professional

Open Access

Evaluation of Life Cycle CO₂ Emissions for the LDR-50 Nuclear District Heating Reactor

Sokka, L., Kirppu, H. & Leppänen, J., Jul 2024, In: Energies. 17, 13, 3250.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Valorisation of baryte tailings for radiation shielding in plastics and nuclear waste disposal

Kinnunen, P. (Corresponding Author), Pelto, J., Viitanen, P., Olin, M. & Nieminen, M., 15 Feb 2024, In: Heliyon. 10, 3, e25719.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

2023

A New Stochastic Geometry Type Based on Voronoi Tessellation in the Serpent 2 Monte Carlo Code

Leppänen, J., 2023, Proceedings of M&C 2023 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering. 8 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Open Access

An Inline Burnup Algorithm

Cosgrove, P. (Corresponding Author), Shwageraus, E. & Leppänen, J., 2023, In: Nuclear Science and Engineering. 197, 8, p. 1681-1699 19 p.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Digitalisation for nuclear waste management: Predisposal and disposal

Kolditz, O. (Corresponding Author), Jacques, D., Claret, F., Bertrand, J., Churakov, S. V., Debayle, C., Diaconu, D., Fuzik, K., Garcia, D., Graebling, N., Grambow, B., Holt, E., Idiart, A., Leira, P., Montoya, V., Niederleithinger, E., Olin, M., Pfingsten, W., Prasianakis, N. I. & Rink, K. & 5 others, Samper, J., Szöke, I., Szöke, R., Theodon, L. & Wendling, J., 2 Jan 2023, In: Environmental Earth Sciences. 82, 1, 11 p., 42.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

11 Citations (Scopus)

EcoSMR, Finnish Ecosystem for Small Modular Reactors ̶ Final Report

Häkkinen, S., Lindroos, T. J., Leppänen, J., Soppela, O., Komu, R., Ryynänen, T., Ilvonen, M., Helminen, A., Suikkanen, H., Saari, J., Hyvärinen, J., Rantakaulio, A., Perälä, H., Turkia, R. & Heinonen, S., 20 Apr 2023, VTT Technical Research Centre of Finland. 66 p. (VTT Research Report; No. VTT-R-00270-23).

Research output: Book/Report › Report

Open Access

File

323 Downloads (Pure)

Ecosystem for New International Decommissioning Services: Final report - dECOmm project 2019-23

Soppela, O., Airila, M., Harviainen, T., Karanta, I., Liinasuo, M., Pasi, A.-E. & Ryynänen, T., 2023, VTT Technical Research Centre of Finland. 75 p. (VTT Technology; No. 423).

Research output: Book/Report › Report

Open Access

Finnish Nuclear Ecosystems

Soppela, O., 26 Oct 2023, p. 1-12. 12 p.

Research output: Contribution to conference › Other conference contribution › Professional

PREDIS Collaboration to Advance the Predisposal Management of Radioactive Waste

Oksa, M., 2023, ASME 2023 International Conference on Environmental Remediation and Radioactive Waste Management, ICEM 2023. American Society of Mechanical Engineers (ASME), 4 p. ICEM2023-110232

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

SAFIR2022 – The Finnish Research Programme on Nuclear Power Plant Safety 2019–2022: Final Report

Hämäläinen, J. (Editor) & Suolanen, V. (Editor), 2023, VTT Technical Research Centre of Finland. 621 p. (VTT Technology; No. 414).

Research output: Book/Report › Report

Open Access

2022

3D Spherical Functional Expansion Tallies in Serpent 2 Monte Carlo Code

Jambrina, A. (Corresponding author) & Leppänen, J., 20 May 2022, Proceedings of the International Conference on Physics of Reactors (PHYSOR 2022). American Nuclear Society (ANS), p. 276-283

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

An Inline Burn-up Algorithm: Proposal and Preliminary Analysis

Cosgrove, P. (Corresponding author), Shwageraus, E. & Leppänen, J., 20 May 2022, Proceedings of the International Conference on Physics of Reactors (PHYSOR 2022). American Nuclear Society (ANS), p. 2256-2265 10 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Blind Benchmark Exercise for Spent Nuclear Fuel Decay Heat

Jansson, P. (Corresponding Author), Bengtsson, M., Bäckström, U., Álvarez-Velarde, F., Čalič, D., Caruso, S., Dagan, R., Fiorito, L., Giot, L., Govers, K., Hernandez Solis, A., Hannstein, V., Ilas, G., Kromar, M., Leppänen, J., Mosconi, M., Ortego, P., Plukienė, R., Plukis, A. & Ranta-Aho, A. & 13 others, Rochman, D., Ros, L., Sato, S., Schillebeeckx, P., Shama, A., Simeonov, T., Stankovskiy, A., Trellue, H., Vaccaro, S., Vallet, V., Verwerft, M., Žerovnik, G. & Sjöland, A., 2022, In: Nuclear Science and Engineering. 196, 9, p. 1125-1145 21 p.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

9 Citations (Scopus)

Case Study on Decommissioning of the FiR 1 TRIGA reactor

Airila, M., Auterinen, I., Helin, J., Kekki, T., Kivelä, P., Kotiluoto, P., Leskinen, A. & Räty, A., 31 Jan 2022, VTT Technical Research Centre of Finland. 24 p. (VTT Research Report; No. VTT-R-00090-22).

Research output: Book/Report › Report

Open Access

File

142 Downloads (Pure)

Comparative Study on the Corrosion Performance of APS-, HVOF-, and HVAF-Sprayed NiCr and NiCrBSi Coatings in NaCl Solutions

Somervuori, M. (Corresponding Author), Varis, T., Oksa, M., Suhonen, T. & Vuoristo, P., Jun 2022, In: Journal of Thermal Spray Technology. 31, 5, p. 1581-1597 17 p.

Research output: Contribution to journal › Review Article › peer-review

Open Access

File

15 Citations (Scopus)

64 Downloads (Pure)

Current Status and On-Going Development of VTT’s Kraken Core Physics Computational Framework

Leppänen, J. (Corresponding Author), Valtavirta, V., Rintala, A., Hovi, V., Tuominen, R., Peltonen, J., Hirvensalo, M., Dorval, E., Lauranto, U. & Komu, R., 25 Jan 2022, In: Energies. 15, 3, 876.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

10 Citations (Scopus)

dECOmm- project main takeaways and way forward

Soppela, O., 23 Nov 2022. 18 p.

Research output: Contribution to conference › Other conference contribution › Professional

Disruption prediction with artificial intelligence techniques in tokamak plasmas

Vega, J. (Corresponding Author), Murari, A., Dormido-Canto, S., Rattá, G. A., Gelfusa, M., Aho-Mantila, L., Hakola, A., Kaltiaisenaho, T., Kirjasuo, A., Lahtinen, A., Leppänen, J., Likonen, J., Salmi, A., Sirén, P., Tala, T. & JET Contributors, 6 Jun 2022, In: Nature Physics. 18, 7, p. 741-750

Research output: Contribution to journal › Article › Scientific › peer-review

37 Citations (Scopus)

District Heating Reactor LDR-50: Thermal-Hydraulic Analysis of Difficult Load Following Cases

Komu, R., Lindroos, T. J., Hillberg, S. & Leppänen, J., 2022, 13th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics, Operation and Safety (NUTHOS 13). p. 1260-1271 12 p. N13P160

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

EcoSMR - Ecosystem for Small Modular Reactors

Häkkinen, S., Lindroos, T. J., Soppela, O., Leppänen, J., Tulkki, V. & Suikkanen, H., Nov 2022, Nuclear Science and Technology Symposium - SYP2022. Helsinki: Finnish Nuclear Society, 4 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Open Access

Editorial for Special Issue “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests”

Fernández, A. M., Kaufhold, S., Olin, M., Zheng, L. G., Wersin, P. & Wilson, J., 2022, In: Minerals. 12, 5, 569.

Research output: Contribution to journal › Other journal contribution › Scientific › peer-review

Open Access

3 Citations (Scopus)

Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

Mazzi, S. (Corresponding Author), Garcia, J., Zarzoso, D., Kazakov, Y. O., Ongena, J., Dreval, M., Nocente, M., Štancar, Ž., Szepesi, G., Eriksson, J., Sahlberg, A., Benkadda, S., Aho-Mantila, L., Hakola, A., Kaltiaisenaho, T., Kirjasuo, A., Leppänen, J., Likonen, J., Salmi, A. & Sirén, P. & 2 others, Tala, T. & JET Contributors, 1 Jul 2022, In: Nature Physics. 18, 7, p. 776-782

Research output: Contribution to journal › Article › Scientific › peer-review

54 Citations (Scopus)

Investigation of novel weight window methods in Serpent 2 for fusion neutronics applications

Valentine, A. (Corresponding Author), Worrall, R. & Leppänen, J., May 2022, In: Fusion Engineering and Design. 178, 113090.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

4 Citations (Scopus)

Load Follow Simulations for the LDR-50 District Heating Reactor Using the Kraken Computational Framework

Leppänen, J., Valtavirta, V. & Komu, R., 20 May 2022, Proceedings of the International Conference on Physics of Reactors (PHYSOR 2022). American Nuclear Society (ANS), p. 3284-3293 10 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Methodology, applications and performance of the CAD-based geometry type in the serpent 2 Monte Carlo code

Leppänen, J., 1 Oct 2022, In: Annals of Nuclear Energy. 176, 109259.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

File

9 Citations (Scopus)

100 Downloads (Pure)

Nuclear Energy Ecosystems – Open Business Day was a success!

Soppela, O., 3 Jun 2022, 5 p. dECOmm project.

Research output: Other contribution › Blog/Web article › Professional

Open Access

Overview of JET results for optimising ITER operation

Mailloux, J. (Corresponding Author), Abid, N., Abraham, K., Abreu, P., Adabonyan, O., Adrich, P., Afanasev, V., Afzal, M., Ahlgren, T., Aho-Mantila, L., Aiba, N., Airila, M., Akhtar, M., Albanese, R., Alderson-Martin, M., Alegre, D., Aleiferis, S., Aleksa, A., Alekseev, A. G. & Alessi, E. & 31 others, Aleynikov, P., Algualcil, J., Ali, M., Allinson, M., Alper, B., Alves, E., Ambrosino, G., Ambrosino, R., Amosov, V., Sundén, E. A., Andrew, P., Angelini, B. M., Angioni, C., Antoniou, I., Hakola, A., Kaltiaisenaho, T., Kim, H.-T., Kim, S. H., Kirjasuo, A., Kiviniemi, T., Lahtinen, A., Leppänen, J., Likonen, J., Liu, F., Nordman, H., Salmi, A., Silva, J., Sirén, P., Tala, T., Virtanen, A. J. & JET Contributors, Apr 2022, In: Nuclear Fusion. 62, 4, 042026.

Research output: Contribution to journal › Review Article › peer-review

Open Access

81 Citations (Scopus)

Pienydinvoimalat sopisivat kaupunkien energiaratkaisuksi

Wessberg, N. & Soppela, O., 2 Dec 2022, In: Helsingin Sanomat. 326, p. A5

Research output: Contribution to journal › Article › General public

Open Access

Repositories for Heat Producing NuclearWaste – Behaviour of Bentonite at Higher Temperature

Olin, M., Aug 2022, In: AMMS Aspects in Mining & Mineral Scinece. 9, 4, p. 1063-1064

Research output: Contribution to journal › Other journal contribution › Scientific

Open Access

Station Blackout Transient Analyses for VTT’s SMR Design LDR-50

Komu, R., Hillberg, S. & Leppänen, J., 2022, Nuclear Science and Technology Symposium (SYP) Proceedings. Finnish Nuclear Society, 4 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Open Access

2021

A Collision-based Domain Decomposition scheme for large-scale depletion with the Serpent 2 Monte Carlo code

García, M. (Corresponding Author), Leppänen, J. & Sanchez-Espinoza, V., Mar 2021, In: Annals of Nuclear Energy. 152, 108026.

Research output: Contribution to journal › Article › Scientific › peer-review

12 Citations (Scopus)

A finnish district heating reactor: Neutronics design and fuel cycle simulations

Leppänen, J., Valtavirta, V., Tuominen, R., Rintala, A. & Lauranto, U., 19 Oct 2021, 28th International Conference on Nuclear Engineering: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications. American Society of Mechanical Engineers (ASME), Vol. 1. 8 p. V001T04A010. (International Conference on Nuclear Engineering (ICONE), Vol. 28).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

6 Citations (Scopus)

A Finnish district heating reactor: Thermal-Hydraulic Design and Transient Analyses

Komu, R. (Corresponding author), Hillberg, S., Hovi, V., Leppänen, J. & Leskinen, J., 2021, Proceedings of the 2021 28th International Conference on Nuclear Engineering: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications. American Society of Mechanical Engineers (ASME), Vol. 1. 7 p. V001T04A006. (International Conference on Nuclear Engineering (ICONE), Vol. 28).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

7 Citations (Scopus)

A Finnish District Heating Reactor: Background and General Overview

Leppänen, J. (Corresponding author), Hillberg, S., Hovi, V., Komu, R., Kurki, J., Lauranto, U., Oinonen, A., Peltonen, J., Rintala, A., Tulkki, V., Tuominen, R. & Valtavirta, V., 2021, Proceedings of the 2021 28th International Conference on Nuclear Engineering: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications. American Society of Mechanical Engineers (ASME), Vol. 1. 8 p. V001T04A009. (International Conference on Nuclear Engineering (ICONE), Vol. 28).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

7 Citations (Scopus)

A Novel Monte Carlo Leakage Correction for Serpent 2

Valtavirta, V. (Corresponding author) & Leppänen, J., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 540-548 50026. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

A nuclear reactor module and a nuclear district heating reactor comprising and method of operating the same

Kurki, J. (Inventor), Hovi, V. (Inventor), Valtavirta, V. (Inventor), Leppänen, J. (Inventor) & Tulkki, V. (Inventor), 30 Nov 2021, IPC No. G21D 1/ 00 A N, Patent No. FI129308B, Priority date 20 Nov 2020, Priority No. FI20200006180

Research output: Patent › Patent

Calibration of neutron detectors at ASDEX Upgrade, measurement and model

Koleva, M. (Corresponding Author), Tardini, G., Zohm, H., Äkäslompolo, S., Leppänen, J. & Team, T. A. U., Sept 2021, In: Fusion Engineering and Design. 170, 112702.

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

Direct Calculation of Safety-Related Parameters for Coupled Transients Using Monte Carlo Neutronics Plus Subchannel Thermal-Hydraulics

Ferraro, D. (Corresponding author), García, M., Valtavirta, V., Imke, U., Tuominen, R., Leppänen, J. & Victor, S.-E., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 549-558 50027. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Enabling Large-Scale Depletion in Serpent 2 Monte Carlo Code by Collision-Based Domain Decomposition

Jambrina, A. (Corresponding author), Leppänen, J. & García, M., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 88-99 49983. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Exploratory tritium breeding performance study on a water cooled lead ceramic breeder blanket for EU DEMO using Serpent-2

Lu, Y., Ye, M. (Corresponding Author), Zhou, G. (Corresponding Author), Hernández, F. A., Leppänen, J. & Hu, Y., Sept 2021, In: Nuclear Materials and Energy. 28, 101050.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

File

2 Citations (Scopus)

94 Downloads (Pure)

FiR 1:n käytetty polttoaine jatkokäyttöön USA:ssa

Airila, M. & Auterinen, I., 2021, In: ATS Ydintekniikka. 50, 1, p. 26-27 2 p.

Research output: Contribution to journal › Other journal contribution › Professional

Open Access

First decommissioning experiences in Finland: VTT’s FiR 1 TRIGA reactor and OK3 radioactive materials research laboratory

Airila, M. (Corresponding author), Auterinen, I., Kekki, T., Kotiluoto, P., Leskinen, A., Räty, A., Siivinen, J. & Viitanen, P., 13 Sept 2021. 12 p.

Research output: Contribution to conference › Conference article › Scientific

Open Access

Functional Expansion Tally-Based Shannon-Fisher Complexity Metric for Fission Source Convergence Analysis in Serpent 2 Monte Carlo Code

Jambrina, A. (Corresponding author) & Leppänen, J., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 249-255 49998. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

General Formulation of Functional Expansion Tallies for Regular 2D Geometries in Serpent 2 Monte Carlo Code

Jambrina, A. (Corresponding author) & Leppänen, J., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 239-248 49997. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Microscopic cross section calculation methodology in the Serpent 2 Monte Carlo code

Rintala, A. (Corresponding Author), Valtavirta, V. & Leppänen, J., 15 Dec 2021, In: Annals of Nuclear Energy. 164, 108603.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

File

5 Citations (Scopus)

241 Downloads (Pure)

Predisposal Waste Management and Decommissioning of the Finnish FiR1 Research Reactor

Holt, E., Airila, M., Kotiluoto, P., Leskinen, A. & Oksa, M., 22 Nov 2021. 1 p.

Research output: Contribution to conference › Conference Abstract › Professional

Open Access

Radiation Shielding Calculations at VTT Centre for Nuclear Safety Using the Serpent 2 Monte Carlo Code

Leppänen, J. (Corresponding author) & Jokipii, M., 2021, Mathematics & Computation (M&C) 2021. American Nuclear Society (ANS), p. 520-529 50024. (Transactions of the American Nuclear Society; No. 3141).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

SAFIR2022 - The Finnish Research Programme on Nuclear Power Plant Safety 2019-2022: Interim Report

Hämäläinen, J. (Editor) & Suolanen, V. (Editor), 2021, VTT Technical Research Centre of Finland. 472 p. (VTT Technology; No. 383).

Research output: Book/Report › Report

Open Access

1 Downloads (Pure)

BA4508 Nuclear energy solutions

Research output

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