Tommi Kekki

  • Phone+358405834095
19972020

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

2020

Intercomparison exercise on difficult to measure radionuclides in activated steel: statistical analysis of radioanalytical results and activation calculations

Leskinen, A., Salminen-Paatero, S., Gautier, C., Räty, A., Tanhua-tyrkkö, M., Fichet, P., Kekki, T., Zhang, W., Bubendorff, J., Laporte, E., Lambrot, G. & Brennetot, R., 1 Jun 2020, In : Journal of Radioanalytical and Nuclear Chemistry. 324, p. 1303-1316 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2018

Environmental radiation survey prior to FiR1 research reactor decommissioning

Leskinen, A., Tanhua-Tyrkkö, M., Kekki, T. & Airila, M., 6 Jul 2018, Cores Symposium on Radiation in the Environment: Scientific Achievements and Challenges for the Society. Salomaa, S., Lusa, M. & Vaaramaa, K. (eds.). Säteilyturvakeskus, p. 124-130 (STUK-A; No. A261).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access

Preliminary Waste Characterization Measurements in FiR 1 TRIGA Research Reactor Decommissioning Project

Räty, A., Kekki, T., Tanhua-Tyrkkö, M., Lavonen, T. & Myllykylä, E., 3 Aug 2018, In : Nuclear Technology. 203, 2, p. 205-220 16 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
2017

Chemistry and transport of fission products (CATFIS)

Kärkelä, T., Gouëllo, M., Hokkinen, J., Penttilä, K., Kekki, T. & Kotiluoto, P., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 78-88 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

FiR1 TRIGA research reactor decommissioning project

Räty, A., Airila, M., Kotiluoto, P., Vilkamo, O., Kekki, T., Auterinen, I., Calonius, K. & Juutilainen, P., 2017, Proceedings of the Workshop on Current and Emerging methods for Optimising Safety and Efficiency in Nuclear Decommissioning. OECD, 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
2015

Formation of particles by radiolytical oxidation of organic iodine

Kärkelä, T., Auvinen, A., Kekki, T., Kotiluoto, P., Lyyränen, J. & Jokiniemi, J., 2015.

Research output: Contribution to conferenceConference articleScientific

Radiolytical oxidation of gaseous iodine by beta radiation

Kärkelä, T., Auvinen, A., Kekki, T., Kotiluoto, P., Lyyränen, J. & Jokiniemi, J., 1 Jan 2015, In : Radiochimica Acta. 103, 10, p. 719-728 10 p.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Studies on the oxidation of organic iodine by beta radiation

Kärkelä, T., Auvinen, A., Kekki, T., Kotiluoto, P. & Lyyränen, J., 2015, ERMSAR 2015. IRSN, 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Open Access
2014
Open Access
2013

Chemistry of fission products (FISKE)

Kekki, T., Penttilä, K., Lamminmäki, S., Könönen Niina & Rossi, J., 2013, SAFIR2014: The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 229-236 (VTT Technology; No. 80).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

2012

Dosimetry assessments for the reactor pressure vessel and core barrel in UK pressurized water reactor (PWR) plant

Thornton, D. A., Allen, D. A., Huggon, A. P., Picton, D. J., Robinson, A. T., Steadman, R. J., Seren, T., Lipponen, M. & Kekki, T., 2012, In : Journal of ASTM International. 9, 4, p. 1-14

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

2 Citations (Scopus)
2011

Primary circuit chemistry of fission products (CHEMPC): CHEMPC summary report

Kärkelä, T., Auvinen, A., Kalilainen, J., Lyyränen, J., Kajolinna, T., Pyykönen, J., Raunio, T., Kåll, L., Zilliacus, R., Tapper, U., Kekki, T., Järvinen, R. & Jokiniemi, J., 21 Sep 2011, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007–2010: Final Report. Puska, E. K. & Suolanen, V. (eds.). p. 301-311 11 p. (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
1 Citation (Scopus)

Primary Circuit Chemistry of Fission Products (CHEMPC): HEMPC summary report

Kärkelä, T., Auvinen, A., Kalilainen, J., Lyyränen, J., Kajolinna, T., Pyykönen, J., Raunio, T., Kåll, L., Zilliacus, R., Tapper, U., Kekki, T., Järvinen, R. & Jokiniemi, J., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 301-311 (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Release of Radioactive Materials from a Degrading Core (RADECO): RADECO summary report

Kekki, T., Zilliacus, R. & Lipponen, M., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 295-300 (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2010

HECLA experiments on interaction between metallic melt and hematite-containing concrete

Sevón, T., Kinnunen, T., Virta, J., Holmström, S., Kekki, T. & Lindholm, I., 2010, In : Nuclear Engineering and Design. 240, 10, p. 3586-3593 8 p.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)
2009
2 Citations (Scopus)

Primary circuit chemistry of fission products (CHEMPC): CHEMPC summary report

Kärkelä, T., Auvinen, A., Zilliacus, R., Lyyränen, J., Pyykönen, J., Tapper, U., Raunio, T., Kekki, T., Kajolinna, T., Kåll, L. & Jokiniemi, J., 2009, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007–2010.: Interim Report. Puska, E. K. (ed.). Espoo: VTT Technical Research Centre of Finland, p. 276-286 (VTT Tiedotteita - Meddelanden - Research Notes; No. 2466).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Release of radioactive materials from a degrading core (RADECO): RADECO summary report

Zilliacus, R., Kekki, T., Lindholm, I. & Suopajärvi, A., 2009, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010 : Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 261-275 (VTT Tiedotteita - Research Notes; No. 2466).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2008

Plasma Incineration of Ion-exchange resins

Järvinen, J., Kotiluoto, P., Heikkinen, J., Kekki, T. & Korpiola, K., 2008, Proceedings of the 3rd Nordic Symposium for Young Scientists in Metallurgy. Espoo, 14 - 15 May 2008. Espoo, p. 82 84

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2007

Experiments and modelling on the behaviour of ruthenium oxides at high temperature

Kärkelä, T., Backman, U., Auvinen, A., Enqvist, Y., Zilliacus, R., Lipponen, M., Kekki, T., Tapper, U., Jokiniemi, J. & Lahtinen, J., 2007.

Research output: Contribution to conferenceConference AbstractScientific

Experiments and modelling on the transport and speciation of ruthenium oxides

Kärkelä, T., Backman, U., Auvinen, A., Enqvist, Y., Zilliacus, R., Lipponen, M., Kekki, T., Tapper, U. & Jokiniemi, J., 2007.

Research output: Contribution to conferenceConference AbstractScientific

Retrospective Dosimetry of Fast Neutrons Focused on the Reactions 93Nb(n,n')93Nbm and 54Fe(n,p)54Mn

Voorbraak, W. P., Kekki, T., Serén, T., Van Bockxstaele, M., Wagemans, J. & Woittiez, J. R. W., 2007, Reactor Dosimetry: 12th International Symposium on . Vehar, D., Gilliam, D. & Adams, J. (eds.). West Conshohocken: American Society for Testing and Materials ASTM, p. 416-423 (ASTM Special Technical Publication; No. STP1490).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Retrospective dosimetry of fast neutrons focused on the reactions 93Nb (n,n') 93Nbm and 54Fe(n,p)54Mn

Voorbraak, W. P., Kekki, T., Serén, T., Van Bockxstaele, M., Wagemans, J. & Woittiez, J. R. W., 2007, In : Journal of ASTM International. 4, 4, Paper ID JAI101142.

Research output: Contribution to journalArticleScientificpeer-review

Ruthenium transport experiments in air ingress accident conditions

Kärkelä, T., Backman, U., Auvinen, A., Tapper, U., Jokiniemi, J., Zilliacus, R., Lipponen, M. & Kekki, T., 2007, The nuclear renaissance at work : Proceedings of the International Congress on Advances in Nuclear Power Plants, ICAPP 2007. Red Hook, NY: Curran Associates Inc., Vol. 1. p. 517-524

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2006

Experiments on the behaviour of ruthenium in airingress accidents

Kärkelä, T., Backman, U., Auvinen, A., Zilliacus, R., Lipponen, M., Kekki, T., Tapper, U. & Jokiniemi, J., 2006, SAFIR: The Finnish Research Programme on Nuclear Power Plant Safety 2003-2006 : Final Report. Espoo: VTT Technical Research Centre of Finland, p. 253-262 (VTT Tiedotteita - Research Notes; No. 2363).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

SANCY / CAPHORN summary report

Lindholm, I., Holmström, S., Miettinen, J., Kekki, T., Pankakoski, P., Sevon, T., Takasuo, E., Virta, J. & Zilliacus, R., 2006, SAFIR: The Finnish Research Programme on Nuclear Power Plant Safety 2003-2006: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 225-236 (VTT Tiedotteita - Research Notes; No. 2363).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Transport of Ruthenium in Diverse Oxidising Conditions

Kärkelä, T., Backman, U., Auvinen, A., Tapper, U., Jokiniemi, J., Zilliacus, R., Lipponen, M. & Kekki, T., 2006, YoungRad-seminar Proceedings. p. 42-46 (NKS Reports, Vol. NKS-159).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Open Access

Transport of Ruthenium in Diverse Oxidising Conditions

Kärkelä, T., Backman, U., Auvinen, A., Tapper, U., Jokiniemi, J., Zilliacus, R., Lipponen, M. & Kekki, T., 2006, NOSA 2006 Aerosol symposium. Vehkamäki, H. (ed.). p. 184-185 (Report Series in Aerosol Science; No. 83).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Transport of Ruthenium in Diverse Oxidising Conditions

Kärkelä, T., Backman, U., Auvinen, A., Tapper, U., Jokiniemi, J., Zilliacus, R., Lipponen, M. & Kekki, T., 2006, 7th International Aerosol Conference: Abstract Book, Volume 1. Mount Laurel, NJ : American Association for Aerosol Research AAAR, p. 654-655

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

2005

Development of NDA procedures for the QA/QC characterization of large volume radioactive waste packages

Van Velzen, L. P. M., Tiitta, A., Lyoussi, A., Strange, R., Kekki, T. & et al., 2005, Proceedings. American Society of Mechanical Engineers ASME, p. 1270-1278

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2004

Gamma scintigraphic evaluation of the fate of hydroxypropyl methylcellulose capsules in the human gastrointestinal tract

Honkanen, O., Marvola, J., Kanerva, H., Lindevall, K., Lipponen, M., Kekki, T., Ahonen, A. & Marvola, M., 2004, In : European Journal of Pharmaceutical Sciences. 21, 5, p. 671 - 678 8 p.

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Gamma scintigraphic evaluation of the fate of microcrystalline chitosan granules in human stomach

Säkkinen, M., Marvola, J., Kanerva, H., Lindevall, M., Lipponen, M., Kekki, T., Ahonen, A. & Marvola, M., 2004, In : European Journal of Pharmaceutics and Biopharmaceutics. 57, 1, p. 133 - 143 11 p.

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Neutron activation-based gamma scintigraphy in pharmacoscintigraphic evaluation of an Egalet® constant-release drug delivery system

Marvola, J., Kanerva, H., Slot, L., Lipponen, M., Kekki, T., Hietanen, H., Mykkänen, S., Ariniemi, K., Lindevall, K. & Marvola, M., 2004, In : International Journal of Pharmaceutics. 281, 1-2, p. 3 - 10 8 p.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)
2003

Retrospective dosimetry based on niobium extraction and counting: VTT 's contribution to the RETROSPEC project

Séren, T. & Kekki, T., 2003, Espoo: VTT Technical Research Centre of Finland. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2203).

Research output: Book/ReportReport

Open Access
2002

Evaluations for prompt-gamma imaging of boron and hydrogen neutron capture reactions in boron neutron capture therapy (BNCT)

Auterinen, I., Kotiluoto, P., Anttila, K., Serén, T., Kekki, T., Renvall, T., Tiitta, A., Kaschuck, Y. & Trykov, L., 2002, Research and Development in Neutron Capture Therapy : Proceedings of the 10th International Congress on Neutron Capture Therapy. Sauerwein, W., Moss, R. & Wittig, A. (eds.). Bologna, p. 887-890

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Evaluations for prompt-gamma imaging of boron and hydrogen neutron capture reactions in boron neutron capture therapy (BNCT)

Auterinen, I., Kotiluoto, P., Anttila, K., Serén, T., Renvall, T., Kekki, T. & Tiitta, A., 2002, Proceedings of the XXXVI Annual Conference of the Finnish Physical Society. Joensuu, 157. (Selected papers. University of Joensuu, Department of Physics; No. 7).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

2001

An anti-compton suppression Ge-telescope detection system for quality control of nuclear waste packages

Agosteo, S., Chabalier, A., Foglio Para, A., Kekki, T., Tanner, V. & Tiitta, A., 2001, The CAARI 2000: Sixteenth international conference on the application of accelerators in research and industry. p. 555-558 (AIP Conference Proceedings; No. 1, Vol. 576).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

ENUSAn polttoainetta myös Suomeen

Kekki, T., Pullinen, J. & Yli-Kauhaluoma, M., 2001, In : ATS Ydintekniikka. 30, 4, p. 19-21

Research output: Contribution to journalArticleProfessional

Rastvorimost nikelja v gruntovoj vode i vode, kontaktirovavshej s zatvordevshim tsementom, v beskislorodnyh uslovijah

Translated title of the contribution: Solubility of nickel in groundwater and water in contact with hardened cement under non-acid conditionsCarlsson, T., Vuorinen, U. & Kekki, T., 2001, In : Radiokhimiya. 43, 5, p. 404-409 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Solubility of Ni in anoxic groundwater and cement water

Carlsson, T., Vuorinen, U. & Kekki, T., 2001, In : Radiochemistry. 43, 5, p. 458-464 7 p.

Research output: Contribution to journalArticleScientificpeer-review

2000

Evaluation of the radioactive waste characterisation at the Olkiluoto nuclear power plant

Kekki, T. & Tiitta, A., 2000, Helsinki: Radiation and Nuclear Safety Authority STUK. 37 p. (STUK-YTO-TR; No. 162).

Research output: Book/ReportReport

Open Access
1997

Physico-chemical forms of radiostrontium in simulated freshwaters

Kekki, T., Rosenberg, R. & Jaakkola, T., 1997, In : Journal of Radioanalytical and Nuclear Chemistry. 224, 1-2, p. 77 - 81 5 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)