Power Engineering 4B Book 5 Plant Maintenance
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Terms in this set (74)
an eye that is made in a rope, using the proper
number and spacing of wire rope clips will be
____________ as strong as the top itself
a
a) 0.8
b) twice
c) half
d) equally
Stove bolts can be
a) square or hexagonal
a
b) tapered threads
c) self locking
d) known as castle nuts
During a maintenance shutdown, the furnace
refractory in a boiler should be _______________ to prolong
its life
a a) wash coated with a dilute solution of heat resistant
cement
b) coated with heat resistant epoxy paint
c) dye penetrant tested
d) roughened with a wire brush
, a common way to determine the mass of an object to
be hoisted is by determining its
a a) density and volume
b) size and shape
c) centre of gravity
d) specific gravity and centripetal force
A strand of fibre rope
a. Is composed of yarns with a left-handed twist
a
b. Is the part melted to prevent unravelling
c. Will un-twist if subjected to a heavy load
d. Is wound around 19 others to form a full size rope
Air removal prior to a hydrostatic test:
a. Is critical, because the air will compress during the
test
a
b. Will prevent oxygen corrosion.
c. Is done by adding oxygen scavenging chemicals to
the test water.
d. Is done with a vacuum pump.
An inhibitor, when added to acid, will:
a. Prevent or minimize the effect of the acid on the
boiler metal
b. Make the acid compatible with the sewer system for
a
disposal
c. Strengthen the acid, thereby shortening the
duration of the cleaning procedure
d. Neutralize the acid residue remaining on the boiler
metal after a chemical cleaning
, The knot that forms a loop that will not slip or jam is
the:
a a. Bowline
b. Sheet bend
c. Figure eight
d. Square or reef knot
To measure the small clearance between a valve
tappet and a cam lobe, _________ is used.
a a. A feeler gauge
b. A vernier caliper
c. A scale ruler
d. An inside micrometer
"Laying up" a boiler means:
a. Preparing the boiler for a period of storage
a
b. Setting the boiler on its foundation
c. Dismantling the boiler for annual overhaul
d. Preparing a boiler for start up
Which of the following are chemicals used for boiler
cleaning and treatment, that require careful control
and vigilant monitoring?
Select one:
a
a. Chelants
b. Phosphates
c. Sulfites
d. Sulfates
Copper sulphate may be used:
Select one:
a. As a marking or layout material
a b. Coating tools to prevent rusting
c. For lubricating very fine threads such as those in a
micrometer
d. As a thread cutting fluid
Exam with Correct Answers
Save
Terms in this set (74)
an eye that is made in a rope, using the proper
number and spacing of wire rope clips will be
____________ as strong as the top itself
a
a) 0.8
b) twice
c) half
d) equally
Stove bolts can be
a) square or hexagonal
a
b) tapered threads
c) self locking
d) known as castle nuts
During a maintenance shutdown, the furnace
refractory in a boiler should be _______________ to prolong
its life
a a) wash coated with a dilute solution of heat resistant
cement
b) coated with heat resistant epoxy paint
c) dye penetrant tested
d) roughened with a wire brush
, a common way to determine the mass of an object to
be hoisted is by determining its
a a) density and volume
b) size and shape
c) centre of gravity
d) specific gravity and centripetal force
A strand of fibre rope
a. Is composed of yarns with a left-handed twist
a
b. Is the part melted to prevent unravelling
c. Will un-twist if subjected to a heavy load
d. Is wound around 19 others to form a full size rope
Air removal prior to a hydrostatic test:
a. Is critical, because the air will compress during the
test
a
b. Will prevent oxygen corrosion.
c. Is done by adding oxygen scavenging chemicals to
the test water.
d. Is done with a vacuum pump.
An inhibitor, when added to acid, will:
a. Prevent or minimize the effect of the acid on the
boiler metal
b. Make the acid compatible with the sewer system for
a
disposal
c. Strengthen the acid, thereby shortening the
duration of the cleaning procedure
d. Neutralize the acid residue remaining on the boiler
metal after a chemical cleaning
, The knot that forms a loop that will not slip or jam is
the:
a a. Bowline
b. Sheet bend
c. Figure eight
d. Square or reef knot
To measure the small clearance between a valve
tappet and a cam lobe, _________ is used.
a a. A feeler gauge
b. A vernier caliper
c. A scale ruler
d. An inside micrometer
"Laying up" a boiler means:
a. Preparing the boiler for a period of storage
a
b. Setting the boiler on its foundation
c. Dismantling the boiler for annual overhaul
d. Preparing a boiler for start up
Which of the following are chemicals used for boiler
cleaning and treatment, that require careful control
and vigilant monitoring?
Select one:
a
a. Chelants
b. Phosphates
c. Sulfites
d. Sulfates
Copper sulphate may be used:
Select one:
a. As a marking or layout material
a b. Coating tools to prevent rusting
c. For lubricating very fine threads such as those in a
micrometer
d. As a thread cutting fluid
