Microbiologically influenced corrosion (MIC) in nuclear power plant systems and components

Tribollet, Bernard

doi:10.1533/9780857095343.2.230

Cited by 6 publications

(6 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Austenitic stainless steel (ASS) and duplex stainless steel (DSS) contain high levels of Cr, Mo, and Ni resulting in excellent corrosion resistance and good pitting corrosion resistance due to their high pitting resistance equivalent number (PREN). However, no matter if it is austenitic or duplex stainless steel, the localized pitting corrosion caused by microorganisms is still inevitable (Huttunen-Saarivirta et al, 2012;Tribollet, 2012;Liu, 2014;Li et al, 2016;Zhou et al, 2018;Dong et al, 2020;Yu et al, 2020). Lekbach et al (2019) reported that the Pseudomonas aeruginosa biofilm could accelerate the corrosion of 304L ASS.…”

Section: Introductionmentioning

confidence: 99%

Study on Microbiologically Influenced Corrosion Resistance of Stainless Steels With Weld Seams

et al. 2020

View full text Add to dashboard Cite

Stainless steels are widely used in various industries due to their desirable combination of mechanical properties and corrosion resistance. However, corrosion of stainless steels was reported seriously on the weld seam areas, and it is not exceptive for microbiologically influenced corrosion (MIC). In the present study, MIC resistance of two austenitic stainless steels (A1, A2 for short) and a duplex stainless steel (D1 for short) with weld seams were comparatively studied by measurement of average and maximum pit depths and electrochemical tests. Experimental results showed that the pit depth on the weld seam was much deeper than that on the base metal for all the stainless steels. The variations in linear polarization resistance (R LPR ) values on base metal and weld seam showed that weld seam could promote MIC. Thus, the study indicated that the weld seam accelerated the MIC. In addition, A1 steel with higher Cu content showed the best MIC resistance, followed by A2 steel with lower Cu content, and D1 steel without Cu addition exhibited the worst resistance to MIC, indicating that Cu addition in stainless steels is speculated to be beneficial to the MIC resistance. The mechanisms of Cu improving the MIC resistance in the stainless steels were discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on Microbiologically Influenced Corrosion Resistance of Stainless Steels With Weld Seams

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The presence of sulfate-reducing bacteria, iron-oxidizing bacteria, and aerobic heterotrophic bacteria in the cooling circuit of a nuclear reactor and how these bacteria were involved in the carbon steel corrosion was previously reported by Rao et al [16]. From these three groups, sulfate-reducing bacteria are the main bacteria responsible for carbon steel corrosion, and their presence is often considered a marker for biocorrosion in cooling water systems [12].…”

Section: Introductionmentioning

confidence: 74%

“…The main forces involved in developing biofilms on metal surfaces comprise nutrient deprivation, continuous water flow, and unfavorable environmental conditions. The formation of the biofilms permits the generation of an internal microenvironment that can initiate and accelerate metal corrosion [12,33]. When the rate of oxygen diffusion in the biofilm is less than the rate of respiration, areas inside of the biofilm become anaerobic and sulfatereducing bacteria can proliferate in the anaerobic conditions created in biofilms, such as the iron-rich tubercles produced by iron-oxidizing bacteria [34].…”

Section: Biocorrosion Of Carbon Steel Coupons Exposed To the Water Sa...mentioning

confidence: 99%

“…Additionally, inorganic precipitates resulting from the bulk aqueous phase and corrosion products are also present in biofilms. Biofilms have exceptional abilities to adapt and survive under extreme values of temperature, salinity, pH, redox potential, pressure, and radiation [7,12]. Bacteria and the products of their metabolic activities (e.g., exopolymers, enzymes, organic and/or inorganic acids, volatile compounds) can affect the anodic and cathodic reactions at metal surfaces, thus altering the electrochemical processes at the biofilm and metal interface [7,8,10,13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Role of Indigenous Bacteria in Corrosion of Two Types of Carbon Steel

Stancu

2022

Microorganisms

View full text Add to dashboard Cite

This study aimed to investigate the presence of both aerobic and anaerobic bacteria in a water sample collected from a nuclear power plant and establish if the indigenous bacteria or the products of their metabolic activities could initiate the corrosion of two different types of carbon steel (i.e., A570, 1045). The aerobic (heterotrophic, iron-oxidizing) and anaerobic (sulfate-reducing) bacteria were detected in low numbers in the water sample. Three bacterial strains were isolated by the enrichment procedure from this sample. Based on phenotypic and genotypic characteristics, the isolated bacteria were identified as Stenotrophomonas maltophilia IBBCn1 (MT893712), Stenotrophomonas maltophilia IBBCn2 (MT893713), and Bacillus thuringiensis IBBCn3 (MT893714). The bacteria existing in the water sample were able to initiate the corrosion of carbon steel A570 and 1045. The sulfate-reducing bacteria were detected in higher numbers than the heterotrophic bacteria and iron-oxidizing bacteria at the end of the biocorrosion experiments. The carbon steel coupons revealed macroscopic and microscopic changes in the surface characteristics, and these changes could be due to biofilm formation on their surfaces and the accumulation of the corrosion products. The corrosion rate varied from one type of carbon steel to another, depending on the incubation conditions and the chemical composition of the coupons.

show abstract

“…Враховуючи здатність мікроорганізмів пристосовуватися до умов високого радіаційного фону, вивчення змін в їх угрупуваннях є перспективним з декількох причин. По-перше, мікроорганізми, як складова мікроценозів, є першопричиною біокорозії споруд, що може призвести до розгерметизації захоронень радіоактивних речовин (Tribollet, 2012). По-друге, за наявності у середовищі специфічних та нехарактерних для місцевості компонентів, стан ценозів здатен змінюватися.…”

Section: вступunclassified

Phospholipid biomarkers analysis as a tool for microbial community assessment on radionuclides contaminated territories

Ruban

Shavanova²,

Illienko³

et al. 2020

Biological Systems: Theory and Innovation

View full text Add to dashboard Cite

The presence of specific components in the environment can change the state of cenoses. The effect of ionizing radiation on plant communities, animals and humans have been well studied, while the effect on soil microflora has not been insufficiently studied. In this paper investigated the effect of radionuclide contamination on microflora of soil samples from the territory of PTLRW "Red Forest 1" (trench), "Red Forest 2" (outside the trench), " Cooling Pond " and " Zalissia ". Phospholipid fatty acid (PLFA) content was obtained by PLFA analysis. The highest level of total PLFA was observed in the territory of "Zalissia" which was 17.40 ± 10.59 μg / h. From the territory of PTLRW "Red Forest 1" (trench) and "Red Forest 2" (outside the trench) the level of total PLFA was 16.29 ± 3.43 μg / g and 16.40 ± 2.90 μg / h, respectively. The PLFA content of the "Cooling Pond" was significantly different from the "Red Forest" and " Zalissia ". The taxonomic groups assessment of the samples, a fungus, gram-positive and gram-negative bacteria content increased in PTLRW "Red Forest" relative to the point "Zalissia ".

show abstract

Microbiologically influenced corrosion (MIC) in nuclear power plant systems and components

Cited by 6 publications

References 73 publications

Study on Microbiologically Influenced Corrosion Resistance of Stainless Steels With Weld Seams

Study on Microbiologically Influenced Corrosion Resistance of Stainless Steels With Weld Seams

Role of Indigenous Bacteria in Corrosion of Two Types of Carbon Steel

Phospholipid biomarkers analysis as a tool for microbial community assessment on radionuclides contaminated territories

Contact Info

Product

Resources

About