Cycle water chemistry based on film forming amines at power plants: evaluation of technical guidance documents

Dyachenko, F. V.; Petrova, T. I.

doi:10.1088/1742-6596/891/1/012271

Cited by 1 publication

(3 citation statements)

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“…In recent years, addition of film forming amines (FFAs) along with the pH controlling amine is gaining popularity [2][3][4]. The FFAs are known to further reduce the corrosion of materials to extremely low values and hence, they can be utilised in wet lay-up procedure, wherein a particular component of the plant will not be in use for a long time [5,6]. Most of the operating reactors worldwide are ≥25 years old [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…ODA has low solubility in water about 1 mg kg −1 at ambient temperatures that increase with increasing temperature. ODA has been widely used and applied to various types of reactors in Russia, U.S.A. and Europe [5,11 15]. The application of ODA in PWRs during operation has also demonstrated the formation of hydrophobic film on structural materials and inhibition of corrosion and reduction of corrosion products [11,16,17].…”

Section: Introductionmentioning

confidence: 99%

“…The application of ODA in PWRs during operation has also demonstrated the formation of hydrophobic film on structural materials and inhibition of corrosion and reduction of corrosion products [11,16,17]. The plant experiences in VVERs show that one of the main advantages of using ODA during lay-up process is the reduction of the time required to achieve target stable chemistry conditions for steam and water while starting up [5]. In addition, ODA and its decomposition products are non-toxic and environment-friendly; the only practical concern of using ODA is possible overdose leading to the formation of gelatinous sticky deposits [7,14].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of octadecylamine for the corrosion inhibition of Incoloy 800

Kuilya

Subramanian

Bera

et al. 2020

Corrosion Engineering, Science and Technology

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Indian pressurised heavy water reactors use Incoloy 800 for steam generators. The pH is maintained alkaline to check corrosion in secondary circuit by the addition of Ethanolamine (ETA). Effect of octadecylamine (ODA) for further reduction of corrosion is investigated. Incoloy was exposed to both steam and liquid phases at 200°C in an autoclave for 7 days. Concentration of ETA was kept constant at 6 ppm and that of ODA was varied from 6 ppm to 20 ppm. The film grown in liquid phase was thinner and enriched with Cr, while the film grown in steam phase had larger particles and mixed-ferrite in nature. Electrochemical Impedance spectroscopy studies suggested the presence of a barrier film under both liquid and steam phase oxidation. The addition of ODA was comparatively more beneficial in liquid phase. The study showed that ODA is a promising amine to inhibit the corrosion of Incoloy 800 in secondary water chemistry conditions.

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Section: Introductionmentioning

confidence: 99%