The effect of dissolved oxygen in lithiated coolant

  • 18 Pages
  • 0.61 MB
  • English

System Chemistry and Corrosion Branch, Chalk River Laboratories , Chalk River, Ont
Water cooled rea
Other titlesEffet de l"oxygène dissous dans le caloporteur lithié.
Statementby H. A. Allsop ... [et al.].
SeriesAECL research -- 10658, AECL research (Series) -- 10658
ContributionsAllsop, H. A., International Conference on Water Chemistry of Nuclear Reactor Systems. (6th : 1992 : Bournemouth, England).
LC ClassificationsTK9203.W37 E44 1992
The Physical Object
Pagination18 p. :
ID Numbers
Open LibraryOL17378793M
ISBN 100662201000

The effect of dissolved oxygen in lithiated coolant H. Allsop, J. Sawicki, M. Godin, and D. Lister AECL, Chalk River, Ontario, Canada University of New Brunswick, Canada 25 32© British Nuclear Energy Society Introduction Experimental Results and Discussion Magnetite-Haematite Transformations Oxide Films on Steel.

Description The effect of dissolved oxygen in lithiated coolant FB2

Get this from a library. The Effect of dissolved oxygen in lithiated coolant. [Heather Allyne Allsop; Atomic Energy of Canada Limited.; Chalk River Nuclear Laboratories. System Chemistry and Corrosion.;]. PDF | OnH.A. Allsop and others published The effect of dissolved oxygen in lithiated coolant | Find, read and cite all the research you need on ResearchGate.

The effect of dissolved oxygen in lithiated coolant Authors: H. Allsop. The effects of pH and dissolved oxygen (DO) on electrochemical behavior and oxide films of SS in borated and lithiated high The effect of dissolved oxygen in lithiated coolant book water were investigated by electrochemical measurements, XPS analysis and SEM technique.

An experimental potential–pH diagram for SS at °C was by:   Corrosion fatigue behavior of Alloy tubes used for actual steam generator (SG) was investigated in borated and lithiated high temperature water containing dissolved oxygen (DO) using boat-shaped specimens.

It was found that the fatigue life at ppb DO was longer than at. In this work, beneficial effects of dissolved oxygen (DO) on the crack initiation and propagation in borated and lithiated high temperature water were observed, which finally increased the low-cycle fatigue (LCF) life of the LN in the water.

The ppb DO added in the water also reduced the total amount of absorbed hydrogen. The USGS has been measuring water for decades. Some measurements, such as temperature, pH, and specific conductance are taken almost every time water is sampled and investigated, no matter where in the U.S.

the water is being studied. Another common measurement often taken is dissolved oxygen (DO), which is a measure of how much oxygen is dissolved in the water.

The aim of the current study was to compare the effect of dissolved oxygen on oxidation behaviour and hydrogen pick up behaviour of various alloys (Zircaloy-2, Zr–1 wt%Nb and Zr– wt%Nb). The change in oxidation behaviour of Zircaloy-2 was found to be insignificant with changing DO level.

Dissolved oxygen and hydrogen gases were monitored by Orbisphere detectors placed in series in the sampling system. Filter packs, mounted in parallel before the gas analysers, were used to determine the concentrations in the coolant of insoluble corrosion products and both soluble and insoluble radioactive transition metal species.

The effect of dissolved oxygen in lithiated coolant. Effects of high and low morpholine operation on corrosion product transport at Bruce NGS A.

Brett, A.

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Mckay, W. Little. Book tools. Add to Favorites; Cite this; Permissions; Recommend to library ; Recently Viewed. In the present work, EAF tests of L weld metal were performed in lithiated and borated high-temperature water.

The effects of welding microstructures (δ-ferrite and columnar dendrite grain), mechanical factors (strain rate, strain amplitude) and environmental factors (dissolved oxygen, DO) on EAF behaviors were investigated. Further, the oxidation behaviour of Zr-1 wt%Nb alloy, as a function of dissolved oxygen content in lithiated water, was monitored in situ by electrochemical impedance spectroscopic (EIS.

The effects of temperature and dissolved oxygen on the electrochemical behavior and the oxide film formation of grades L and L stainless steels at high-temperature borated and lithiated.

Analyze the effects of various factors on the level of dissolved oxygen in a water sample (e.g., salt content, temperature, degree of mixing, and the presence of reducing compounds).

Adapted. Assuming a linear extrapolation of the Arrhenius plot to be valid up to K, a half-life for hydrogen peroxide in CANDU coolant at this reactor temperature is s in lithiated water. The rate constant obtained by extrapolation of our data to room temperature ( K) is x 10"7 s"1 in lithiated water.

The critical parameters for cooling water are: conductivity, total dissolved solids (TDS), hardness, pH, alkalinity and saturation index.

Conductivity and Total Dissolved Solids (TDS) Conductivity is a measure of the ability of water to conduct electrical current and it indicates the amount of the dissolved. To know that a system is fully mixed and aerobic, dissolved oxygen of is a good target — the lower the dissolved oxygen, the more efficient is oxygen transfer.

The aerobic organisms — which remove more organic matter — actually are effective as long as they have any oxygen but you risk “dead zones” at the low levels.

Water contains oxygen in two ways. Water has oxygen as part of its chemical make up as H 2 also contains dissolved oxygen. (Boiled water tastes flat because the dissolved oxygen has been boiled out.

The Boy Scout Handbook says to pour the water from one bucket to another to get oxygen back in which will make it taste better.).

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Due to the low Henry’s law constant for \(O_2\) in water, the levels of dissolved oxygen in water are too low to support the energy needs of multicellular organisms, including humans. To increase the \(O_2\) concentration in internal fluids, organisms synthesize highly. Effect of temperature, chloride and dissolved oxygen concentration on the open circuit and transpassive potential values of L stainless steel at high-temperature pressurized water.

The concentration of dissolved oxygen can be readily, and accurately, measured by the method originally developed by Winkler in (Ber. Deutsch Chem. Gos., 21, ). Dissolved oxygen can also be determined with precision using oxygen sensitive electrodes; such electrodes require frequent standardization with waters containing.

[33] H. Sun, X. Wu, E. Han, and Y. Wei, "Effects of pH and dissolved oxygen on electrochemical behavior and oxide films of SS in borated and lithiated high temperature water," Corrosion Science, vol. 59, pp.Vacuum deaeration has been used successfully in once-through cooling systems. Where all oxygen is not removed, catalyzed sodium sulfite can be used to remove the remaining oxygen.

The sulfite reaction with dissolved oxygen is: Na2SO3 + 1/2 O2 = Na2SO4. sodium oxygen sodium. sulfite sulfate. The use of catalyzed sodium sulfite for chemical. The Electric Power Research Institute (EPRI) conducts research, development, and demonstration projects for the benefit of the public in the United States and internationally.

As an independent, nonprofit organization for public interest energy and environmental research, we focus on electricity generation, delivery, and use in collaboration with the electricity sector, its stakeholders and.

Central to this understanding are the effects of pressure on both dissolved and free gas forms in solution. According to Henry’s law, the amount of gas dissolved in a liquid is directly proportional to its partial pressure, but this relationship holds true only when temperature is constant.

As the temperature of a liquid changes, the partial. or oxygen deficiencies21,24,28 in the synthesized material. Doping with equal amounts of Mg+2 and Mn+4 ions may ease synthesis and focus the investigation on dopant effects 41 Thus, the aim of this study was to investigate the effects of Mg and Mn co-doping on LCO cycled through the O3-O6-O1 phase transitions.

Precursor materials were. The aim of this work is to characterize the oxide layer structure of Alloy TT in high-temperature water with different dissolved hydrogen (DH) contents by using an X-ray photoelectron spectroscopy.

Under the low DH contents (– mg/kg), the oxide layers were composed of an outermost layer of Ni(OH) 2 and Cr(OH)3 enriched in Ni, an intermediate layer of hydroxides and. Furthermore, dissolved oxygen levels rose sharply at low loads. This effect was calculated as costing the utility approximately $38, per month in lost efficiency and generation.

Causes and effects of pollution on fish 7 Harmful variations in natural water quality characteristics 7 Water temperature 7 Water pH 8 Dissolved oxygen 9 Supersaturation with dissolved gas 11 Ammonia 11 Factors associated with ammonia toxicity.

() Effects of alternating dissolved oxygen and dissolved hydrogen on the corrosion behavior of alloy 52 in high temperature high pressure water.

Journal of Nuclear MaterialsOnline publication date: 1-NovBiochemical Oxygen Demand or Biological Oxygen Demand, is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing organic matter in water.

BOD can be measured in real-time with our BOD analyzers to improve wastewater process control and plant efficiency.Consequently, dissolved oxygen escapes from solution into the gas phase, where it is removed by the vacuum pump.

Filling the flask with nitrogen gas and repeating this process several times effectively removes almost all of the dissolved oxygen. The temperature of the solvent decreases because some solvent evaporates as well during this process.