Chapter 20 Routine Boiler Maintenance & Inspection

Question 1

After cleaning, cast-iron boilers should be left completely filled with _______ in order to reduce corrosion.

a) water
b) A slightly acidic solution
c) A slightly basic solution
d) A mixture of oil and antifreeze

Answer 1

a) water

Question 2

Which of the following chemicals are placed in the shell of the boiler to absorb any traces of moisture?

a) Slack lime
b) Silica gel
c) Activated alumina
d) All of the above

Answer 2

d) All of the above

Question 3

Black light is the popular name for invisible light in the near _______ range of wave lengths.

a) Ultrasonic
b) Green light
c) Ultraviolet
d) Violet light

Answer 3

c) Ultraviolet

Question 4

Portable lamps of _________ or less, with current supplied from transformers or batteries, should be provided to eliminate the danger of electrocution to personnel inside the boiler.

a) 1.5V
b) 12V
c) 24V
d) 110V

Answer 4

b) 12V

Question 5

Hydrostatic testing of a boiler requires that the pressure be raised to _______ the Maximum Allowable Working Pressure stamped on the boiler.

a) 1.5 times
b) 2.0 times
c) 1.25 times
d) 1.0 times

Answer 5

a) 1.5 times

Question 6

Chemicals used for the alkaline boil out of a boiler consist of a combination of which of the following:

a) Sodium hydroxide
b) Sodium carbonate
c) Sodium phosphate
d) All of the above

Answer 6

d) All of the above