Book 3: 7-17 - Water Treatment

Question 1

The amount of chemicals fed to a boiler is dependent upon the:

Select one:

A. Amount of make-up required during the next 24 hours
B. Size of the boiler
C. Amount of water in the boiler
D. Age of the boiler
E. Type of the boiler

Answer 1

A. Amount of make-up required during the next 24 hours

Question 2

The regenerant most often used for regenerating a sodium zeolite softener is:

Select one:

A. Sodium hydroxide
B. Sodium chloride
C. Sulphuric acid
D. Hydrogen chloride
E. Calcium sulphate

Answer 2

B. Sodium chloride

Question 3

Large facilities will have a lab on site to carry out the water testing by conducting all of the following tests except:

Select one:

A. Colour comparison
B. Free chlorine
C. Bacteriological
D. Taste
E. Combined chlorine

Answer 3

D. Taste

Question 4

Calcium sulphate in the boiler feed water produces:

Select one:

A. Temporary hardness, high solubility
B. Temporary hardness and permanent hardness
C. Temporary hardness, low solubility
D. Permanent hardness, high solubility
E. Permanent hardness, low solubility

Answer 4

E. Permanent hardness, low solubility

Question 5

The boiler blowdown procedure may be done about _____ times per day, each time for about 15 seconds, depending on the demand.

Select one:

A. Two
B. Four
C. One
D. Five
E. Three

Answer 5

E. Three

Question 6

Large facilities will have a lab on site to carry out the water testing by conducting all of the following tests except:

Select one:

A. Odour levels
B. Total dissolved solids (TDS)
C. Turbidity (clarity)
D. pH (acidity/alkalinity) value
E. Dye penetrant

Answer 6

E. Dye penetrant

Question 7

The amount of chemicals fed to a boiler is dependent upon the:

Select one:

A. Amount of water in the boiler
B. Values derived from the boiler water tests
C. Age of the boiler
D. Type of the boiler
E. Size of the boiler

Answer 7

B. Values derived from the boiler water tests

Question 8

Magnesium bicarbonate in the boiler feed water produces:

Select one:

A. Temporary hardness and permanent hardness
B. Permanent hardness, very high solubility
C. Permanent hardness, very low solubility
D. Temporary hardness, very high solubility
E. Temporary hardness, very low solubility

Answer 8

E. Temporary hardness, very low solubility

Question 9

With zeolite filters it is easy to flush much zeolite down the drain during the ______ cycle.

Select one:

A. Service
B. Backwash
C. Regeneration
D. Injection
E. Rinse

Answer 9

B. Backwash

Question 10

The modes of operation of the sodium zeolite water softener include all of the following except:

Select one:

A. Exchange
B. Rinse
C. Injection
D. Backwash
E. Flush

Answer 10

E. Flush

Question 11

The adverse conditions that can occur within the boiler are caused by all of the following except:

Select one:

A. Suspended solids
B. Suspended gases
C. Organics
D. Dissolved solids
E. Dissolved gases

Answer 11

B. Suspended gases

Question 12

Temporary hardness in water caused by:

Select one:

A. Sulphates and bicarbonates
B. Sodium chloride and/or hydroxide
C. Calcium and/or magnesium bicarbonates
D. Calcium and/or magnesium bicarbonates
E. Suspended solids

Answer 12

D. Calcium and/or magnesium bicarbonates

Question 13

Common methods of removing suspended solids from boiler make-up water are:

Select one:

A. Softeners and settling tanks
B. Coagulates and softeners
C. Daearators and scrubbers
D. Settling tanks and filters
E. Evaporators and screens

Answer 13

D. Settling tanks and filters

Question 14

The amount of chemicals fed to a boiler is dependent upon the:

Select one:

A. Amount of steam produced over the next 24 hours
B. Amount of water in the boiler
C. Age of the boiler
D. Size of the boiler
E. Type of boiler

Answer 14

A. Amount of steam produced over the next 24 hours

Question 15

The four conditions that can occur within the boiler include all of the following except:

Select one:

A. Scale
B. Mud
C. Foaming
D. Corrosion
E. Erosion

Answer 15

E. Erosion

Question 16

In order to prevent the contamination of a potable water supply the method of providing a physical separation between the free flowing discharge end of a potable water pipe and an open or non-pressure receiving vessel is the:

Select one:

A. Air gap
B. Atmospheric vacuum breaker
C. Double check valve
D. Pressure vacuum breaker
E. Reduced pressure principal device

Answer 16

A. Air gap

Question 17

Material trapped in the bed of a pressure filter is removed by:

Select one:

A. Replacing the bed with new material
B. Backwashing the filter
C. Passing chemicals through the exhausted bed
D. Regenerating the bed with a regenerant
E. Heating the bed

Answer 17

B. Backwashing the filter

Question 18

The “radical” in the boiler feedwater that indicates “permanent hardness” is the:

Select one:

A. Bicarbonate
B. Zeolite
C. Polymer
D. Resin
E. Sulphate

Answer 18

E. Sulphate

Question 19

A plunger pump is a _____ pump.

Select one:

A. Reciprocating
B. Vane
C. Centrifugal
D. Gear
E. Lobe

Answer 19

A. Reciprocating

Question 20

The “radical” in thee boiler feedwater that indicates “temporary hardness” is the:

Select one:

A. Polymer
B. Zeolite
C. Sulphate
D. Resin
E. Bicarbonate

Answer 20

E. Bicarbonate