Some fundamental understandings of Zn-injection water chemistry on material corrosion in pressurized water reactor primary circuit

Wu, Xi; Liu, Xiahe; Zhang, Ziyu; Tan, Jun; Han, En‐Hou; Ke, Wei

doi:10.1016/j.corcom.2021.12.004

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…They concluded that higher Zn concentrations are needed to mitigate SCC initiation. The electrochemical study also showed a strong dependency of oxide film properties below Zn concentrations of 50 ppb, while > 50 ppb Zn did not result in a further improvement of the corrosion resistance [15,39]. However, a Japanese investigation program [36] recommended not to exceed 10 ppb Zn injection for SCC mitigation based on the results that Alloy 600 reversed U-bend specimens showed higher a SCC susceptibility with 50 ppb Zn injection than at 0 and 10 ppb Zn conditions.…”

Section: Effect Of Zn Concentrationmentioning

confidence: 99%

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Role of Zn Injection on Mitigating Stress Corrosion Cracking Initiation of Alloy 182 Weld Metal in Simulated Light Water Reactor Environment

Chen¹,

Mackiewicz²,

Seifert³

et al. 2023

Preprint

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Section: Effect Of Zn Concentrationmentioning

confidence: 99%

“…For radiation dose reduction purposes, usually a low Zn concentration in the range of 5-10 ppb (up to 15 ppb in some cases) is widely accepted in LWR plants. So far, most laboratory studies show that the target Zn concentration to assure SCC mitigation is rather high, in the range of 20-60 ppb [15] or even up to 100-120 ppb [16].…”

Section: Introductionmentioning

confidence: 99%

Role of Zn Injection on Mitigating Stress Corrosion Cracking Initiation of Alloy 182 Weld Metal in Simulated Light Water Reactor Environment

Chen¹,

Mackiewicz²,

Seifert³

et al. 2023

Preprint

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“…Hydropower plants, which employ dams and other methods to create energy in moving water, rely heavily on water. The flowing water drives the rotating blades, which spin a generator, and mechanical energy is converted into electrical energy by the spinning of turbines [3][4][5][6][7][8][9][10][11][12][13]. Hydroelectric power generates a significant amount of the world's electricity.…”

Section: Water Utilization In Electric Power Generationmentioning

confidence: 99%

Water Chemistry in Nuclear Power Plant

Nur Salam,

Rokonuzzaman

2023

Nuclear Power Plants - New Insights

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Water quality has long been an important part of the operation of nuclear power plants. Water is used as a working and cooling fluid in power plants. The quality of source waters to be used in the power plants after treatment should conform to the prescribed values of Physicochemical properties like pH, EC, TDS, alkalinity, hardness, presence of chloride content, silica, and heavy metals as recommended by technical guidelines. The Physicochemical properties of water must be recovered the recommended values of the World Health Organization (WHO), United States of Public Health (USPH), and power plant water chemistry guidelines. But the values of raw water are very far from the recommended values of Nuclear Power Plants operation. So, it needs to treat to use in the boilers. Gravitation, Carbon filtration, Ion exchange method, and Reverse Osmosis (RO) are good ways to treat the water before use in power plants. The aim of this chapter is to explore the water chemistry of the source water quality parameters values and those of the recommended values of technical guidelines.

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Effect of substituted cobalt–chromium–iron oxides’ dissolution kinetics in oxidizing formulation on decontamination process

Balaji,

Chandramohan,

Puspalata

et al. 2024

J Radioanal Nucl Chem

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Removing radioactive corrosion products from Cr-containing iron oxides require a multi-step and multi-cycle decontamination process. The present article brings out the effect of divalent metal ion substitution on the release rate of chromium in the oxidative pre-treatment step. The non-stoichiometric cobalt chromium ferrites were synthesized, characterized and effect of Zn2+/Ni2+ substitution on the dissolution behavior was probed. The dissolution rates decreased with increasing the degree of inclusion and showed minima at ~ 0.4–0.6 atom% which is explained on the basis of lattice structure. It is concluded that the dissolution kinetics of native nickel–chromium ferrites in reactors increases with metal ion inclusion.

show abstract

Some fundamental understandings of Zn-injection water chemistry on material corrosion in pressurized water reactor primary circuit

Cited by 11 publications

References 18 publications

Role of Zn Injection on Mitigating Stress Corrosion Cracking Initiation of Alloy 182 Weld Metal in Simulated Light Water Reactor Environment

Role of Zn Injection on Mitigating Stress Corrosion Cracking Initiation of Alloy 182 Weld Metal in Simulated Light Water Reactor Environment

Water Chemistry in Nuclear Power Plant

Effect of substituted cobalt–chromium–iron oxides’ dissolution kinetics in oxidizing formulation on decontamination process

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