Ch18_MONITORING AND TESTING (CHP 18) DECK (12)

Question 1

To prevent scale formation, inject:

A) Phosphates
B) Sodium chloride
C) Phenolphthalein
D) Amines
E) Molybdate

Answer 1

A) Phosphates

Question 2

Organic contaminants in boiler water cause:

A) Scaling
B) Shrinkage
C) Corrosion
D) Water hammer
E) Foaming

Answer 2

E) Foaming

Question 3

Total dissolved solid concentration is generally determined by measuring:

A) pH
B) Radicals
C) Acidity
D) Alkalinity
E) Conductivity

Answer 3

E) Conductivity

Question 4

A conductivity meter is used to measure the boiler water:

A) pH
B) Alkalinity
C) TDS
D) Turbidity
E) Hardness

Answer 4

C) TDS

Question 5

Hardness is a measure of relative concentration of:

A) Sludge
B) Sodium
C) Dissolved oxygen
D) Calcium carbonate
E) Organics

Answer 5

D) Calcium carbonate

Question 6

Dissolved gases in boiler water cause:

A) Enhanced heat transfer
B) Scaling
C) Corrosion
D)Reduced chemical use
E) Shrinkage

Answer 6

C) Corrosion

Question 7

Boiler water contaminated with organic material will likely:

A) Cause grooving of boiler metal
B) Produce very hard scale
C) Foam
D) Have a low pH
E) Result in pitting of boiler metal

Answer 7

C) Foam

Question 8

The test used for the acidity or alkalinity of the condensate returns of a steam system is called the:

A) TDS test
B) Molybdate test
C) Phosphate test
D) Hardness test
E) pH test

Answer 8

E) pH test

Question 9

Sodium phosphates will keep the boiler water slightly alkaline and non corrosive and:

A) Prevents the formation of any kind of sludge
B) Will prevent scale formation
C) Will put a light protective scale on the heating surfaces
D) Absorbs dissolved oxygen and prevents CO2 pitting
E) Prevents erosion of the boiler metal

Answer 9

A) Prevents the formation of any kind of sludge

Question 10

The class of water impurity that may be in the form of sand or silt is called:
A) Organics
B) Dissolved solids
C) Absorbed sludge
D) Diluted solids
E) Suspended solids

Answer 10

E) Suspended solids

Question 11

To protect yourself from hazards associated with sampling you need:

A) Welding mask
B) Fire proof clothing
C) Rubber chemical suit
D) Disposable paper dust mask
E) Eye protection

Answer 11

E) Eye protection

Question 12

The main methods of testing the samples are:

A) Meter
B) Comparison
C) Titration
D) All of these methods are correct

Answer 12

D) All of these methods are correct