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Power Engineering Part B Unit 6 Exam Study Guide.
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Power Engineering Part B Unit 6 Exam Study Guide. Acidity - answerIn water: the excess of hydrogen ions (H+) over hydroxide ions (OH-) that occurs where the pH is less than 7 Adsorb - answerTo hold a film of gas or liquid molecules of one material onto the surface of another material. Agglome...

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  • November 3, 2024
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  • power engineering part b unit 6 exam study guide

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©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM


Power Engineering Part B Unit 6 Exam
Study Guide.


Acidity - answer✔In water: the excess of hydrogen ions (H+) over hydroxide ions (OH-) that
occurs where the pH is less than 7

Adsorb - answer✔To hold a film of gas or liquid molecules of one material onto the surface of
another material.

Agglomeration - answer✔The coming together of small, scattered particles, called floc, which
are then able to settle easier and faster particles into larger, heavier out of a liquid.

Alginate - answer✔Plant-sourced compounds that, when added to boiler water, combine with
precipitated scale-forming compounds. This keeps them fluidized and non-adherent.

Alkalinity - answer✔The capacity of water to neutralize bicarbonate, hydroxide, and
occasionally acids. This capacity is caused by the water's content of carbonate, borate, silicate,
and phosphate.

Alum - answer✔A common name for any form of aluminum sulfate. used in water treatment
clarifiers as a flocculant.

Amine - answer✔A broad category of industrial uses. Power plant use ranges from oxygen
scavenging to ammonia-derived organic compound that has various corrosion prevention.

Anion - answer✔An atom with more electrons than protons and, hence, is negatively charged.

Anode - answer✔The positive terminal of an electrolytic cell.

Anodic Inhibitor - answer✔A chemical additive that forms a protective layer of oxide film on the
surface reactions.

Avian Waste - answer✔Biological products deposited by birds, including feathers and feces.

Bicarbonate - answer✔Any salt containing the anion HCO3

, ©THEBRIGHT EXAM SOLUTIONS
10/30/2024 11:32 PM

Biofilm - answer✔A thin, slimy, adherent film of bacteria.

Biological Fouling - answer✔The result of abundant growth of algae, fungi, and bacteria on
cooling tower surfaces.

Borescope - answer✔A fibre optic instrument used for the visual inspection of narrow passages.

Burette - answer✔An apparatus used to accurately measure the volume of reagent used during
a titration.

Carbonate - answer✔Any salt containing the anion CO32-.

Carryover - answer✔The entrainment of water droplets in the steam leaving the boiler drum.

Cathode - answer✔The negative terminal of an electrolytic cell.

Cathodic Inhibitor - answer✔A chemical additive that provides surface protection by either
slowing the cathodic reaction, or selectively precipitating on cathodic areas, to limit the
diffusion of reducing species to the surface.

Cation - answer✔An atom with less electrons than protons and, hence, is positively charged.

Caustic Cracking - answer✔Intercrystalline cracking of boiler carbon steel caused by a corrosion
reaction in the presence of caustic along the grain boundaries within the metal.

Caustic Embrittlement - answer✔The intercrystalline cracking of steel caused by the presence
of free NAOH stress, boiler water leakage, and concentration of NAOH

Caustic Gouging - answer✔Caustic corrosion that occurs under accumulated scale deposits.

Caustic Soda - answer✔A very high pH (basic) compound, it has various uses in power plants.
Also called sodium hydroxide.

Cellulose - answer✔An insoluble organic substance that is the main constituent of plant cell
walls.

Chelants - answer✔commonly calcium and magnesium. They reduce scale deposits or remove
Chemicals designed to bind to positively charged soluble metal ions, most pre-existing scale.

Clarifier - answer✔A settling tank used to remove sediment from water through sedimentation,
coagulation, or flocculation.

Coagulation - answer✔The use of chemicals that cause suspended matter to join together into
larger particles.

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