Ichem final reviewer

Refers to chemical and mechanical treatment of water source

Treatment in form of chemical dosage/injection

Sum of suspended solids determined gravimetrically.

Substances which will dissolve in water.

Suspended particles in water

Muddy cloudy appearance.

Finely suspended matter which does not settle

Measure of alkalinity/acidity. Critical for water treatment programs

Measure of bicarb, carbonate, hydroxyl

Water’s ability to conduct electricity in cooling water. It indicates the amount of dissolved minerals.

When engine cooling systems are filled with freshwater, treatment is still required. Why?

The purest form of naturally occurring water is

The internal cooling circuit, also known as

A mixture of oxygen and sulfur

The most common cooling water treatment to prevent corrosion

It is located on the bottom platform of machinery space and takes in sea water while the ship is in open sea -

It controls the fuel oil temperature to provide correct viscosity for combustion.

Lubricating oil for main engine is stored in the bottom of the crankcase, known as the

What is the main purpose of having a fuel oil flowmeter?

Which fuel transfer is normally done manually?

Generally accepted maximum density limit for purifier operation is

In the domestic freshwater system, the hydrophore must maintain the pressure that is provided by

To establish frequency of blowdown

Removed by filtration

Are in solution with water.

Used to react with calcium hardness-

Caused by calcium and magnesium ions

It causes foaming and combines with suspended solids to form sludge which cause overheating of boiler plates.

Removal of chemical modification of substances which potentially damaging the boiler

Formed by salts that have limited solubility but not totally insoluble

A natural process that converts a refined metal into a more chemically- stable form such as oxide, hydroxide, or sulfide -

Caused by the combination of oxide layer fluxing & continuous oxidation transported by oxygen

Perfect location in the boiler to take sample for sampling procedure.

Removal of oxygen in feed water