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2019

Effect of lead and applied potential on corrosion of carbon steel in steam generator crevice solutions

Bojinov, M., Jäppinen, E., Saario, T., Sipilä, K. & Toivonen, A., 1 Oct 2019, In : Corrosion Science. 159, 108117.

Research output: Contribution to journalArticleScientificpeer-review

Steam generators
Carbon steel
Lead
Corrosion
Stress corrosion cracking
2018

Review of the Aaltonen-mechanism

Huotilainen, C., Saario, T. & Toivonen, A., Nov 2018, Svensk Kärnbränslehantering AB (SKB). 31 p. (SKB rapport; No. SKB R-18-03).

Research output: Book/ReportReport

Open Access
2017

Corrosion Behavior of Carbon Steel Coated with Octadecylamine in the Secondary Circuit of a Pressurized Water Reactor

Jäppinen, E., Ikäläinen, T., Järvimäki, S., Saario, T., Sipilä, K. & Bojinov, M., 2017, In : Journal of Materials Engineering and Performance. 26, 12, p. 6037–6046 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Pressurized water reactors
Oxides
Carbon steel
Gain measurement
Corrosion

Effect of chloride transients on corrosion of low-alloyed steel under oxygenated high-temperature water conditions

Bojinov, M., Jäppinen, E., Mayinger, W., Saario, T., Selector, M. & Sipilä, K., 1 Jan 2017.

Research output: Contribution to conferenceConference articleScientific

Steel
Chlorides
corrosion
chlorides
steels

Kinetics of oxygen removal by hydrazine alternatives in conditions of steam generator preservation during outage

Betova, I., Bojinov, M. & Saario, T., 2017, VTT Technical Research Centre of Finland. 22 p. (VTT Research Report, Vol. VTT-R-05209-17).

Research output: Book/ReportReport

3 Citations (Scopus)

Localized corrosion of pressure vessel steel in a boiling water reactor cladding flaw: Modeling of electrochemical conditions and dedicated experiments

Sipilä, K., Bojinov, M., Jäppinen, E., Mayinger, W., Saario, T. & Selektor, M., 1 Jul 2017, In : Electrochimica Acta. 241, p. 10-27 18 p.

Research output: Contribution to journalArticleScientificpeer-review

Boiling water reactors
Steel structures
Steel
Stress corrosion cracking
Corrosion

Mitigation of cracking through advanced water chemistry (MOCCA)

Ikäläinen, T., Jäppinen, E., Saario, T., Sipilä, K. & Bojinov, M., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 313-318 (VTT Technology, Vol. 294).

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

Open Access

Verification of a test method for lead assisted stress corrosion cracking of carbon steel

Bojinov, M., Jäppinen, E., Saario, T. & Sipilä, K., 2017, VTT Technical Research Centre of Finland. 21 p. (VTT Research Report, Vol. VTT-R-05238-16).

Research output: Book/ReportReport

2016
4 Citations (Scopus)

Corrosion Mechanism of Low-Alloyed Steel in High-Temperature Water: Effect of Additives and Time of Exposure

Sipilä, K., Bojinov, M., Mayinger, W., Saario, T. & Selektorc, M., 2016, In : Journal of the Electrochemical Society. 163, 9, p. C530-C538

Research output: Contribution to journalArticleScientificpeer-review

Steel
Cations
Positive ions
Corrosion
Oxides

Determining Zeta Potential of Magnetite Particles in PWR Secondary Side Water Treated with Ammonia or Ethanolamine by Using Streaming Potential Technique

Jäppinen, E., Sipilä, K. & Saario, T., Oct 2016, 20th International Conference on Water Chemistry of Nuclear Reactor Systems (NPC 2016) . Nuclear Institute - NI, Vol. 2. p. 1251-1259

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

magnetite
ammonia
boilers
deposits
water

Hydrazine replacement in nuclear power plants: alternative substances and techniques

Betova, I., Bojinov, M. & Saario, T., 2016, VTT Technical Research Centre of Finland. 33 p. (VTT Research Report; No. VTT-R-03426-16).

Research output: Book/ReportReport

Improving passivation of carbon steel in steam cycles of power plants with a film forming amine

Jäppinen, E., Saario, T. & Sipilä, K., 2016, Baltica X: International Conference on Life Management and Maintenance for Power Plants. Auerkari, P. (ed.). Espoo: VTT Technical Research Centre of Finland, 7 p. (VTT Technology, Vol. 261).

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

Open Access
Steam
Passivation
Amines
Carbon steel
Power plants
2015

Deposition model for magnetite on secondary circuit surfaces: a sensitivity study

Bojinov, M. & Saario, T., 2015, VTT Technical Research Centre of Finland. 31 p. (Helsinki University of Technology: Systems Analysis Laboratory. A: Research Reports, Vol. VTT-R-00034-15).

Research output: Book/ReportReport

11 Citations (Scopus)

Effect of chloride and sulfate additions on corrosion of low alloy steel in high-temperature water

Sipilä, K., Bojinov, M., Mayinger, W., Saario, T. & Stanislowski, M., 2015, In : Electrochimica Acta. 173, p. 757-770

Research output: Contribution to journalArticleScientificpeer-review

Steel
High strength steel
Oxides
Sulfates
Chlorides
2 Citations (Scopus)

Effect of Electrochemical Potential on Stress Corrosion Cracking Susceptibility of EN 1.4301 (AISI 304) Austenitic Stainless Steels in Simulated Hot Black Liquor

Pohjanne, P., Vepsäläinen, M., Saario, T., Sipilä, K., Romu, J., Saukkonen, T., Hänninen, H., Heikkilä, M., Koskiniemi, J., Berg, C-G., Pulliainen, M., Virtanen, I. & Ohligschläger, T., 2015, In : Corrosion. 71, 7, p. 887-894

Research output: Contribution to journalArticleScientificpeer-review

Stress corrosion cracking
Austenitic stainless steel
Corrosion
Anodic protection
Caustics
1 Citation (Scopus)

Effect of hydrazine on general corrosion of carbon and low-alloyedsteels in pressurized water reactor secondary side water

Järvimäki, S., Saario, T., Sipilä, K. & Bojinov, M., 2015, In : Nuclear Engineering and Design. 295, p. 106-115

Research output: Contribution to journalArticleScientificpeer-review

State-of-the-art on SG corrosion problems: lead induced stress corrosion cracking

Betova, I., Bojinov, M. & Saario, T., 2015, VTT Technical Research Centre of Finland. 75 p. (VTT Research Report, Vol. VTT-R-03434-15).

Research output: Book/ReportReport

Water chemistry during hot functional testing of WWER reactors

Bojinov, M. & Saario, T., 2015, VTT Technical Research Centre of Finland. 16 p. (VTT Research Report, Vol. VTT-R-02915-15).

Research output: Book/ReportReport

Water
Testing
Corrosion
Radioactivity
Passivation
2014
6 Citations (Scopus)

Effect of chloride on the oxides on low-alloyed steel in conditions of a lightwater reactor pressure vessel cladding flaw

Bojinov, M., Nowak, E., Saario, T., Sipilä, K. & Stanislowski, M., 2014, In : Journal of the Electrochemical Society. 161, 4, p. C177-C187

Research output: Contribution to journalArticleScientificpeer-review

Steel
Pressure vessels
Oxides
Chlorides
Defects

Effect of chloride transients on the corrosion behavior of low alloyed steel in cladding flaws of reactor pressure vessels under oxygenated high-temperature water conditions

Bojinov, M., Nowak, E., Saario, T. & Stanislowski, M., 2014, In : atw - International Journal for Nuclear Power. 59, 4, p. 221-227 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Pressure vessels
Corrosion
Defects
Steel
Water

Effect of hydrazine on carbon steel corrosion under PWR secondary side conditions

Sipilä, K., Väisänen, S. & Saario, T., 2014, Espoo: VTT Technical Research Centre of Finland. 16 p. (Lappeenranta University of Technology: Department of Information Technology. Research report, Vol. VTT-R-00510-14).

Research output: Book/ReportReport

Open Access

Effect of octadecylamine on carbon steel corrosion under PWR secondary side conditions

Sipilä, K. & Saario, T., 2014, VTT Technical Research Centre of Finland. 116 p. (VTT Research Report; No. VTT-R-06077-14).

Research output: Book/ReportReport

Steel corrosion
Pressurized water reactors
Carbon steel
Corrosion rate
Ferrosoferric Oxide
1 Citation (Scopus)

Effect of sulphide exposure on mechanical properties of CuOFP

Sipilä, K., Arilahti, E., Lehtikuusi, T. & Saario, T., 2014, In : Corrosion Engineering Science and Technology. 49, 6, p. 410-414

Research output: Contribution to journalArticleScientificpeer-review

Sulfides
Creep
Mechanical properties
Bentonite
Copper

Effects of spilled chemicals on fouling, heat transfer and corrosion in the cooling water systems of NPPs

Velin, E., Väisänen, S., Lukin, J. & Saario, T., 2014.

Research output: Contribution to conferenceConference PosterScientific

Water cooling systems
Fouling
Nuclear power plants
Corrosion
Heat transfer

Film-Forming Amines in Steam/Water Cycles: structure, properties, and influence on corrosion and deposition processes

Betova, I., Bojinov, M. & Saario, T., 2014, Espoo: VTT Technical Research Centre of Finland. 42 p. (Lappeenranta University of Technology: Department of Information Technology. Research report, Vol. VTT-R-03234-14).

Research output: Book/ReportReport

Magnetite deposition and zeta potential studies in 2014

Ikäläinen, T., Peltonen, S., Saario, T. & Velin, E., 2014, VTT Technical Research Centre of Finland. 28 p. (VTT Research Report; No. VTT-R-05936-14).

Research output: Book/ReportReport

Magnetite
Zeta potential
Ammonia
Water

Sulphide-induced embrittlement of CuOFP: Final Report 2013

Arilahti, E., Lehtikuusi, T., Saario, T. & Sipilä, K., 2014, Espoo: VTT Technical Research Centre of Finland. 14 p. (VTT Research Report; No. VTT-R-01020-14).

Research output: Book/ReportReport

The effect of spilled chemicals on MIC in the cooling water systems of NPPs

Lukin, J., Rajala, P., Saario, T., Velin, E. & Väisänen, S., 2014, VTT Technical Research Centre of Finland. 26 p. (VTT Research Report; No. VTT-R-06181-14).

Research output: Book/ReportReport

2013

Effect of chloride transients on the corrosion behavior of low alloyed steel in cladding flaws of reactor pressure vessels under oxygenated high-temperature water conditions

Bojinov, M., Nowak, E., Saario, T. & Stanislowski, M., 2013, In : VGB PowerTech. 12, p. 91-97 7 p.

Research output: Contribution to journalArticleProfessional

Pressure vessels
Corrosion
Defects
Steel
Water
8 Citations (Scopus)
Sulfides
Crack tips
Copper
Groundwater
Grain boundaries

Influence of dispersants on the corrosion and deposition processes in power plant coolant circuits

Betova, I., Bojinov, M. & Saario, T., 2013, Espoo: VTT Technical Research Centre of Finland. 52 p. (VTT Research Report; No. VTT-R-06213-13).

Research output: Book/ReportReport

The effect of sulphide exposure on the mechanical behaviour of OFP copper

Sipilä, K., Arilahti, E., Lehtikuusi, T., Saario, T. & Varis, P., 2013, Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. Auerkari, P. & Veivo, J. (eds.). Espoo: VTT Technical Research Centre of Finland, p. 58 (VTT Technology; No. 107).

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

Open Access
Copper
Groundwater
Creep
Stress corrosion cracking
Grain boundaries

The effect of sulphide exposure on the mechanical behaviour of OFP copper

Sipilä, K., Arilahti, E., Lehtikuusi, T., Saario, T. & Varis, P., 2013, Baltica IX. International Conference on Life Management and Maintenance for Power Plants. Auerkari, P. & Veivo, J. (eds.). Espoo: VTT Technical Research Centre of Finland, p. 395-410 (VTT Technology; No. 106).

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

Open Access
Copper
Groundwater
Creep
Stress corrosion cracking
Grain boundaries

Water chemistry and plant operating reliability (WAPA)

Bojinov, M., Kinnunen, P., Saario, T. & Väisänen, S., 2013, SAFIR2014: The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 324-333 (VTT Technology; No. 80).

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

2012

Corrosion of copper by water under oxygen-free conditions

Lehmusmies, S., Pehkonen, A., Forsen, O., Saario, T., Becker, R. & Granfors, M., 2012, Proceedings: European Corrosion Congress 2012, EUROCORR2012. 15 p.

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

Copper
Hydrogen
Corrosion
Oxygen
Water
36 Citations (Scopus)

Effect of water chemistry on the oxide film on Alloy 690 during simulated hot functional testing of a pressurised water reactor

Betova, I., Bojinov, M., Karastoyanov, V., Kinnunen, P. & Saario, T., 2012, In : Corrosion Science. 58, p. 20-32 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Pressurized water reactors
Oxide films
Oxidation
Water
Testing

Optimisation of the water chemistry regarding stability of the oxide film on alloy 690 during simulated hot functional testing of a pressurised water reactor

Betova, I., Bojinov, M., Karastoyanov, V., Kinnunen, P. & Saario, T., 2012, Proceedings: Nuclear Plant Chemistry Conference, NPC 2012. Paris, France

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

Pressurized water reactors
Oxides
Oxide films
Boron
Corrosion resistance
2011

Corrosion and creep studies of candidate in-core materials for Generation IV supercritical water reactor

Penttilä, S., Rissanen, L., Saario, T. & Toivonen, A., 2011, Proceedings: 2nd International Conference on Advances in Nuclear Materials, ANM 2011. Mumbai, India

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

3 Citations (Scopus)

Interaction of metallic materials with simulated kraft digester white liquor: Towards the electrochemical detection of sulphide

Betova, I., Bojinov, M., Hyökyvirta, O. & Saario, T., 2011, In : Journal of Electroanalytical Chemistry. 654, 1-2, p. 52-59 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Sulfides
Sodium Hydroxide
Sodium
Precious metals
Sulfur
9 Citations (Scopus)

Optimisation of the hot conditioning of carbon steel surfaces of primary heat transport system of Pressurized Heavy Water Reactors using electrochemical impedance spectroscopy

Kiran Kumar, M., Gaonkar, K., Ghosh, S., Kain, V., Bojinov, M. & Saario, T., 2011, In : Journal of Nuclear Materials. 401, 1-3, p. 46-54 9 p.

Research output: Contribution to journalArticleScientificpeer-review

heavy water reactors
Heavy water reactors
Ferrosoferric Oxide
carbon steels
Magnetite

Sulphide induced stress corrosion cracking of copper: Final Report

Arilahti, E., Carpen, L., Lehtikuusi, T., Olin, M., Saario, T. & Varis, P., 2011, Espoo: VTT Technical Research Centre of Finland. 14 p. (Lappeenranta University of Technology: Department of Information Technology. Research report; No. VTT-R-00467-11).

Research output: Book/ReportReport

Open Access

Water Chemistry and Oxidation in the Primary Circuit (WATCHEM): WATCHEM summary report

Kinnunen, P. & Saario, T., 2011, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Final report. Espoo: VTT Technical Research Centre of Finland, p. 381-391 (VTT Tiedotteita - Research Notes; No. 2571).

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

Open Access
Oxidation
Water
Networks (circuits)
Alkalies
Impurities
2010

Corrosion issues in relation to copper canisters for disposal of spent nuclear fuel

Saario, T., 2010, Baltica VIII: Life Management and Maintenance for Power Plants. Espoo: VTT Technical Research Centre of Finland, Vol. 1. p. 196-203 (VTT Symposium; No. 264).

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

Open Access
Spent fuels
Nuclear fuels
Corrosion
Copper
18 Citations (Scopus)

Effect of dissolved oxygen on oxidation and hydrogen pick up behaviour-Zircaloy vs Zr-Nb alloys

Kiran Kumar, M., Aggarwal, S., Kain, V., Saario, T. & Bojinov, M., 2010, In : Nuclear Engineering and Design. 240, 5, p. 985-994 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Dissolved oxygen
Hydrogen
dissolved oxygen
hydrogen
oxidation
32 Citations (Scopus)

Effect of sulphide on the corrosion behaviour of AISI 316L stainless steel and its constituent elements in simulated Kraft digester conditions

Betova, I., Bojinov, M., Hyökyvirta, O. & Saario, T., 2010, In : Corrosion Science. 52, 4, p. 1499-1507 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Stainless Steel
Sulfides
Stainless steel
Corrosion
Steel
18 Citations (Scopus)

Estimation of kinetic and transport parameters by quantitative evaluation of EIS and XPS data

Betova, I., Bojinov, M., Karastoyanov, V., Kinnunen, P. & Saario, T., 2010, In : Electrochimica Acta. 55, 21, p. 6163-6173 11 p.

Research output: Contribution to journalArticleScientificpeer-review

X ray photoelectron spectroscopy
Kinetics
Tungsten
Steel
Pressurized water reactors