Microbially induced corrosion in fire fighting systems - experience and remedies

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

Abstract

Firefighting water systems are important safety systems in all industries, including nuclear power plants (NPPs). However, they are susceptible to microbially induced corrosion, which is a degradation mode needing special attention. Leakages were observed in a fire fighting system made from stainless steel at a nuclear power plant shortly after maintenance and modernization work, which included replacement of part of the old carbon steel pipelines with stainless steel pipelines, as well as exchange of some Type 304 stainless steel pipes with Type 316 pipes due to relining parts of the system. The failure analysis revealed sub-surface corrosion cavities with pinholes at the inner surface and finally penetrating the whole pipe wall thickness. It was concluded that the reason for the leaks was due to microbially induced corrosion, (MIC). The paper will present the results from failure analyses, explain the remedial actions taken at the power plant, and discuss the implication of these findings on new similar systems, including the importance of avoiding iron deposits and optimization of water quality.
Original languageEnglish
Title of host publicationProceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors
EditorsMichael Wright, Denise Paraventi, John H. Jackson
PublisherSpringer
Pages831-840
Number of pages10
ISBN (Print)978-3-319-68453-6, 978-3-319-68454-3
DOIs
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
Event18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017 - Portland, United States
Duration: 13 Aug 201717 Aug 2017

Publication series

SeriesMinerals, Metals and Materials Series
VolumePart F11
ISSN2367-1181

Conference

Conference18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017
Abbreviated titleEDM 2017
CountryUnited States
CityPortland
Period13/08/1717/08/17

Fingerprint

Fires
Stainless steel
Corrosion
Nuclear power plants
Iron deposits
Pipelines
Pipe
Steel pipe
Modernization
Security systems
Water quality
Failure analysis
Carbon steel
Power plants
Degradation
Water
Industry

Keywords

  • nuclear
  • MIC
  • stainless steel
  • aging management

Cite this

Ehrnstén, U., Carpén, L., & Tompuri, K. (2018). Microbially induced corrosion in fire fighting systems - experience and remedies. In M. Wright, D. Paraventi, & J. H. Jackson (Eds.), Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors (pp. 831-840). Springer. Minerals, Metals and Materials Series, Vol.. Part F11 https://doi.org/10.1007/978-3-319-68454-3_62
Ehrnstén, Ulla ; Carpén, Leena ; Tompuri, Kimmo. / Microbially induced corrosion in fire fighting systems - experience and remedies. Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors . editor / Michael Wright ; Denise Paraventi ; John H. Jackson. Springer, 2018. pp. 831-840 (Minerals, Metals and Materials Series, Vol. Part F11).
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abstract = "Firefighting water systems are important safety systems in all industries, including nuclear power plants (NPPs). However, they are susceptible to microbially induced corrosion, which is a degradation mode needing special attention. Leakages were observed in a fire fighting system made from stainless steel at a nuclear power plant shortly after maintenance and modernization work, which included replacement of part of the old carbon steel pipelines with stainless steel pipelines, as well as exchange of some Type 304 stainless steel pipes with Type 316 pipes due to relining parts of the system. The failure analysis revealed sub-surface corrosion cavities with pinholes at the inner surface and finally penetrating the whole pipe wall thickness. It was concluded that the reason for the leaks was due to microbially induced corrosion, (MIC). The paper will present the results from failure analyses, explain the remedial actions taken at the power plant, and discuss the implication of these findings on new similar systems, including the importance of avoiding iron deposits and optimization of water quality.",
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Ehrnstén, U, Carpén, L & Tompuri, K 2018, Microbially induced corrosion in fire fighting systems - experience and remedies. in M Wright, D Paraventi & JH Jackson (eds), Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors . Springer, Minerals, Metals and Materials Series, vol. Part F11, pp. 831-840, 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017, Portland, United States, 13/08/17. https://doi.org/10.1007/978-3-319-68454-3_62

Microbially induced corrosion in fire fighting systems - experience and remedies. / Ehrnstén, Ulla; Carpén, Leena; Tompuri, Kimmo.

Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors . ed. / Michael Wright; Denise Paraventi; John H. Jackson. Springer, 2018. p. 831-840 (Minerals, Metals and Materials Series, Vol. Part F11).

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

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Ehrnstén U, Carpén L, Tompuri K. Microbially induced corrosion in fire fighting systems - experience and remedies. In Wright M, Paraventi D, Jackson JH, editors, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors . Springer. 2018. p. 831-840. (Minerals, Metals and Materials Series, Vol. Part F11). https://doi.org/10.1007/978-3-319-68454-3_62