1 Flashcards
Which of the following is true about a double disc gate valve?
A It is positioned between the tapered
seats to form a seal.
B The disc and seat are parallel to each
other and are not tapered.
C It consists of two pieces that sit
between two matching tapered seats
in the body.
D It is hollow around the edges and
solid across the centre portion.
B The disc and seat are parallel to each
other and are not tapered.
A 45 degree offset has a travel of 200 mm.
Calculate the run of the offset.
A 14.4 mm B 283 mm
C 141 mm D 21.5 mm
C 141 mm
What is the primary purpose of soldering flux?
A Provide a good finish. B Prevent oxidation.
C Remove impurities. D Promote capillary action.
B Prevent oxidation
At what pipe size does standard weight pipe maintain a constant wall
thickness?
A 300 mm B 200 mm
C 250 mm D 350 mm
A 300 mm
Flow measurement using the vena contracta method is limited to pipe sizes ________
inches and larger.
A 2.5 B 4
C 1.5 D 6
D 6
What is the Arc Flash hazard/risk category for removal of electrical bolted covers to
exposed bare energized parts on equipment 240 Volt to 600 Volt?
A 3 B 2
C 0 D 1
B 2
A scaffold must be designed and constructed to support at least ____ times the load that
may be imposed off of it.
A 5 B 3
C 4 D 2
C 4
Using the rule of thumb for wire rope, what is the safe working load for
a 1” diameter IWRC 6X19 wire rope?
A 12,000 lb B 1500 lb
C 16,000 lb D 2000 lb
C 16,000 lb
What is used to align a flexible coupling on a base mounted pump?
A Combination square and level.
B Straight edge and feeler gauge.
C Water level and straight edge.
D Vernier calliper and micrometer
B Straight edge and feeler gauge.
What is the recommended safety factor for thermo-matic traps?
A 2 to 3 B 1.2 to 2
C 2 to 4 D 1.5 to 2.5
D 1.5 to 2.5
What affects the speed of a pneumatic grinder?
A Air pressure B Air flow.
C Torque rating. D Air quality.
B Air flow.
What would happen to a soot blower inserted into the combustion gas
stream of a high pressure boiler when no steam is flowing into the soot
blower?
A The fuel nozzle will melt. B The view window will distort.
C The wand will bend. D The nozzle will plug.
C The wand will bend.
When water changes state from a liquid to a steam it expands by _____ times.
A 6 B 100
C 2 D 1700
D 1700
On a 1” X 1” X 2” black malleable tee, what does the 2” refer to?
A Concentric tee configuration B Branch opening.
C Eccentric tee configuration. D Larger run opening
B Branch opening.
Prior to commissioning a lube oil system, what procedure must be done?
A The test medium must be removed
and the system filled with oil.
B The system must be pneumatically
tested to its yield point.
C A combination of oil and water must
be circulated through the
system
D The system must be tested, flushed
and pickled.
D The system must be tested, flushed
and pickled.
A fitting, either cast or wrought, having one side outlet at any angle other than 90 degrees
is a/an?
A Branch tee B Wye
C Manifold D Rolling offset
B Wye
Which of the following is true with respect to Nickel 200?
A It is a general purpose material for
applications that require resistance to
heat and corrosion
B It has a high resistance to
hydrochloric and sulfuric acid under
reducing conditions.
C It has excellent resistance to most
acids including strong oxidizers such
as ferric and cupric chlorides.
D It one of the few metals that can be
used with hot string solutions of
magnesium chloride.
E It has high resistance to caustics and
high temperature halogens.
E It has high resistance to caustics and
high temperature halogens.
What is the minimum size copper piping, in inches, permitted for use with medical gas?
A 1/4 B 1/2
C 1 D 3/4
D 3/4
Which of the following plastic pipe types is designed for hot or cold water distribution
systems?
A PEX B PE
C AL D ABS
A PEX
- Which reducer produces a center discharge?
A Eccentric B Butt Weld
C Concentric D Funnel
C Concentric
- Coking of a heat exchanger:
A can be eliminated with lime. B can be eliminated.
C is not always possible to eliminate. D can be reduced with vibration of the
unit.
C is not always possible to eliminate.
When added in small amounts to an inert gas like argon, oxygen will:
A increase the undercut. B decrease the welding performance.
C decrease puddle fluidity. D increase puddle fluidity.
D increase puddle fluidity.
When using High Temperature Hot Water generators, where is lower
temperature water returned in the system?
A To the expansion drum. B To the suction side of the circulator
C To the inlet of the generator. D No return, water must be 100%
make up.
B To the suction side of the circulator
What is an advantage of an inverted bucket trap?
A They are small and light weight
B It can be made for very high pressures
C It continually discharge
B It can be made for very high pressures
Elevated pipes that are suspended from ceilings are usually resting in rigid or flexible
what?
A Pipe hooks B Pipe beds
C Pipe hangers D Pipe cleats
C Pipe hangers
What device is installed on the downstream side of a high pressure steam
safety valve that vents to the roof?
A Drip pan elbow B Safety valve de-accumulator
C Exhaust head D Double block and bleed
A Drip pan elbow
What is a pipe clamp?
A They are hinged on one side and have
a cam lock opening.
B They are normally used for holding
tape measures or other tools.
C They are useful for clamping materials
over long distances.
D They are normally used to
A They are hinged on one side and have
a cam lock opening.
When joining copper tube to copper tube in a refrigeration system, what
would you use?
A 95% tin and 5% antimony solder
with flux.
B BCuP-5 without flux.
C BAg-5D silver solder without flux. D BAg-5 silver solder with flux.
B BCuP-5 without flux.
The amount of heat energy available at the boiler nozzle is called the ____ rating of the
boiler.
A gross
B net
C input
A gross
Polyethylene pipe is joined by means of?
A Plastic fittings and stainless steel
clamps
B Adhesives and plastic fittings
C Adhesives, plastic fittings and
corrosion resistant clamps
D Friction rings, plastic fittings and
stainless steel clamps
Plastic fittings and stainless steel
clamps
Which part of a combination square when used alone can find the centre of cylindrically
shaped objects?
A Square Head. B Bevel Protractor.
C Centre Head. D Multi-Faceted Edge.
C Centre Head.
Which of the following describes a characteristic that is created when Manganese is added
to iron?
A Metal with extreme hardness and
resistance to wear without making it
brittle
B It produces the greatest hardening
effect of any element except carbon
and reduces any enlargement of the
grain structure.
C It increases the metals corrosion
resistance but decreases the
temperature resistance
D Metal with extreme hardness and
resistance to wear without making it
brittle
E It produces an inner grain structure
that has greater toughness and
ductility.
E It produces an inner grain structure
that has greater toughness and
ductility.
Which of the following best describes margin when referring to a drill bit?
A The narrow raised portion running the
entire body length.
B The amount of heat a tip can take
before cracking.
C The portion of the tip to the beginning
of the shank.
A The narrow raised portion running the
entire body length.
Heating boilers are built according to ASME Section
A III
B IV
C I
D VI
B IV
Prior to initial start-up of a diesel generator, what is required?
A Ensure day tank is located above
generator.
B Purge air from the system.
C Purge fuel from the system. D Engage starter to start fuel flow.
B Purge air from the system.
When using a tube/tubing bender to make a left hand 90 bend, where is
the measured mark placed?
A Aligned with the “0” on the bending
wheel
B Aligned with the “90” on the bending
wheel.
C Aligned with the “0” on the
placement link
D Aligned with the “90” on the
placement link
D Aligned with the “90” on the
placement link
What part of a hammer lines up with the handle?
A The cross pean. B The sledge.
C The post. D The peen.
C The post
What device activates the motor in an instrument air compressor?
A Level switch. B Pressure switch.
C Vacuum switch. D Temperature switch.
B Pressure switch.
What does the term “interpretations” mean in the last code section of ASME?
A Descriptions of technical terminology.
B Written requests for clarification of
technical information.
C Technical information that cannot be
amended by municipalities.
D A document
B Written requests for clarification of
technical information.
What is absolute pressure?
A Any pressure above a perfect vacuum.
B The pressure produced by the weight
of the earth’s atmosphere and
measure per unit area on an object.
C The pressure produced by the weight
of the earth’s atmosphere and
measure per unit area on an
object.The pressure produced by the
weight of the earth’s atmosphere and
measure per unit area on an
object.The pressure produced by the
weight of the earth’s atmosphere and
measure per unit area on an
object.The pressure produced by the
weight of the earth’s atmosphere and
measure per unit area on an
object.The pressure produced by the
weight of the earth’s atmosphere and
measure per unit area on an ob
D The pressure in an enclosed system
and over a certain amount.
A Any pressure above a perfect vacuum.
What are the two properties of matter?
A Mechanical and chemical. B Weight and mass.
C Molecules and elements. D Chemical and physical.
D Chemical and physical.
A 12” (300 mm) carbon steel pipe is carrying naphtha from a distillation
column to a storage tank. What code governs the construction and testing
of this line?
A ANSI/ASME B 31.1 B CSA Z662
C ANSI/ASME B 31.3 D ANSI/ASME Section VIII
C ANSI/ASME B 31.3 D ANSI/ASME Section VIII
On a P & I D drawing you have located the vessel where you are to install
a spool. In order to place it in the correct location, what information from
the mechanical prints would you need?
A Grid co-ordinates and elevations
from the detail drawings.
B Grid co-ordinates and elevations
from the mechanical plans.
C Grid co-ordinates from the
mechanical plans and elevations
from
the detail drawings.
C Grid co-ordinates from the
mechanical plans and elevations
from
the detail drawings.
Steam traps are in steam distribution systems at all low points and at intervals of ___ m.
A 50 B 100
C 70 D 85
A 50
What procedure should be followed to eliminate vibration created from a
base mounted pump?
A Install the pump on an inertia base
and spring isolators
B Support the pump independently
from the piping.
C Anchor the pump to the house
keeping pad
D Install acoustic insulation around the
pump motor.
A Install the pump on an inertia base
and spring isolators
Inhaling fumes from which of the following metals could result in metal fume fever?
A Aluminium B Zinc
C Copper D Chromium
B Zinc
When something on a print cannot be fully shown because it is blocked from view by another object, its outline is usually shown by the use of:
1)
hidden line symbols
2)
a section view
3)
cut lines in the object above
4)
a heavier black line
1)
hidden line symbols
The signalman should:
1)
keep his eyes on the load while giving signals to the crane operator
Incorrect Response
2)
maintain eye contact with the operator while giving him signals
3)
shift his eye contact from the load to the crane operator while giving him signals
4)
wear a thick pair of mittens to keep his hands warm while giving signals to the crane operator
1)
keep his eyes on the load while giving signals to the crane operator
Incorrect Response
The best type of rope to use if an electrical hazard exists is:
1)
dry manila
2)
dry nylon
3)
dry polypropylene
4)
dry polyester
3)
dry polypropylene
In instrumentation, the first letter in the ID represents the:
1)
controlled variable
2)
type of loop (open or closed)
3)
controlled medium
4)
inferred variable
1)
controlled variable
Tirfor jacks are not recommended if the weight of the load exceeds:
1)
1 ton
2)
2 tons
3)
5 tons
4)
10 tons
1)
1 ton
If you wish to join a ¾” rope to a ½” rope, you should use:
1)
a square knot
2)
a Carrick bend
3)
a sheetbend
4)
a half hitch
3)
a sheetbend
Nylon rope is approximately _____ times stronger than manila rope:
1)
2 1/2
2)
4
3)
6
4)
10
1)
2 1/2
The rule-of-thumb used for determining the number of U-bolt clips required for a wire rope is:
1)
[rope diameter x 3] + 1 to the next whole number
2)
[rope diameter x 5] + 1 to the next whole number
3)
[rope diameter x 10] + 5 to the next whole number
4)
[rope diameter x 50] + 3 to the next whole number
1)
[rope diameter x 3] + 1 to the next whole number
If you wish to join two ¾” ropes together, you should use:
1)
a square knot
2)
a sheetbend
3)
a half hitch
4)
a clove hitch
1)
a square knot
What should you insert between metal slings and metal pipe to increase friction and reduce slipping while hoisting?
1)
a metal wedge
2)
a wooden wedge
3)
a soft piece of padding
4)
a piece of pipe
2)
a wooden wedge
When preparing a test coupon for welding, the wire used to maintain the proper weld gap should be:
1)
slightly thinner than the root opening required
2)
slightly thicker than the root opening required
3)
slightly thinner than the land
4)
left between the two pieces to maintain an even gap
2)
slightly thicker than the root opening required
The usual finished pipe end bevel for fit-up is:
1)
37 ½ o
2)
30 o
3)
45 o
4)
60 o
1)
37 ½ o
To butt-weld two pipes of unequal thickness, the thicker pipe must be tapered to match the thinner pipe. The length of taper to offset thickness ratio is:
1)
2:1
2)
3:1
3)
4:1
4)
no specific ratio is required
3)
4:1
H2SO4 is the proper chemical symbol for:
1)
hydrochloric acid
2)
sulphuric acid
3)
hydrogen sulphide
4)
caustic soda
2)
sulphuric acid
What is the correct configuration for a saddle-on lateral branch to a header?
1)
the OD of the branch fits the OD of the header
2)
the OD of the branch fits the ID of the header
3)
the ID of the branch fits the ID of the header
4)
the ID of the branch fits the OD of the header
4)
the ID of the branch fits the OD of the header
In reference to surveying, what is the correct definition of foresight?
1)
the ability to foresee the placement of the level in the best location
2)
the initial shot taken to a benchmark
3)
a shot taken to an unknown elevation
4)
a shot taken to the height of the instrument
3)
a shot taken to an unknown elevation
Which of the following chemicals is often used to clean fibreglass pipe or PVC pipe and fittings?
1)
methanol
2)
ethanol
3)
varsol
4)
methyl ethyl ketone
4)
methyl ethyl ketone
Sodium hydroxide is sometimes referred to as:
1)
caustic soda
2)
MEKP
3)
trichloroethylene
4)
Varsol
1)
caustic soda
Acetone is:
1)
an ether-based cleaning agent
2)
a glycol derivative
3)
a ketone
4)
an alcohol-based cleaning agent
3)
a ketone
The term used when a soldered joint lets go under stress is:
1)
tear
2)
cohesion
3)
failure
4)
creep
4)
creep
A brazing alloy that fails to flow or has a tendency to ball up indicates:
1)
oxidation on the metal surfaces
2)
that the flame temperature is too low
3)
that the torch is not at the proper angle to the pipe
4)
that the rod has absorbed too much moisture from the surrounding atmosphere
1)
oxidation on the metal surfaces
95-5 solder contains:
1)
95% antimony and 5% tin
2)
95% tin and 5% antimony
3)
95% silver and 5% copper
4)
95% titanium and 5% silver
2)
95% tin and 5% antimony
Fluxes are classified as:
1)
direct or indirect
2)
corrosive or non-corrosive
3)
expensive or inexpensive
4)
hard or soft
2)
corrosive or non-corrosive
The flux most frequently used to solder copper tubing is:
1)
solder paste
I
2)
borax
3)
tallow
4)
homogeneous
1)
solder paste
A weld symbol placed on the arrow side of the lines means to:
1)
weld on the other side of the metal, as shown at the tip of the arrowhead
2)
weld on the same side of the metal, as shown at the tip of the arrowhead
3)
weld both sides of the metal shown at the tip of the arrowhead
4)
weld either side of the metal shown at the tip of the arrowhead
2)
weld on the same side of the metal, as shown at the tip of the arrowhead
Sil-fos does not require a flux when joining:
1)
copper to brass
2)
brass to brass
3)
copper to copper
4)
steel to steel
3)
copper to copper
A 3/8” manila rope with a bowline on it would be able to safely lift a load of approximately:
1)
145 lbs
2)
560 lbs
3)
375 lbs
4)
1,200 lbs
1)
145 lbs
The proper angle for a portable ladder is based on a ratio of:
1)
10:1
2)
5:1
3)
4:1
4)
2:1
5)
1:1
3)
4:1
A cleat on a wooden scaffold plank must be set so that the maximum overhang of the plank beyond the support is:
1)
half the width of the plank
2)
6” (150 mm)
3)
9” (225 mm)
4)
12” (300 mm)
4)
12” (300 mm)
If a pump is rated at a 6 foot head and is installed in a system which shows a static pressure of 4 psi at the pump, the pump is called a:
1)
positive displacement transfer pump
2)
high head pump
3)
low head pump
4)
lift pump
3)
low head pump
It is recommended to install a low water cutoff on a steam boiler at a point where it will:
1)
shut off the burners with 1/2” of water showing in the gauge glass
2)
shut off the burners with 1” of water in the boiler
3)
have the control point exactly at the lowest safe water line
4)
shut off the burners while there is 1” of water in the boiler above the lowest safe water line
1)
shut off the burners with 1/2” of water showing in the gauge glass
A solid state switch is used in a steam boiler pressure control. Proper installation would require that:
1)
the siphon pigtail is installed at 90o to the plane of the controller
2)
a slug check valve is installed on the line leading to the control
3)
the operating mechanism is protected from live steam
4)
a shutoff valve is placed between the control and the steam space
3)
the operating mechanism is protected from live steam
Which section of the ASME Code specifies that all pipe and fittings must be marked with a heat number?
1)
AISI 105
2)
B31.1
3)
B31.2
4)
ANSI / ASME 38.4
2)
B31.1
When a boiler gets its feedwater directly from a pressurized potable water source, it must have:
1)
a PRV to prevent overpressure of the boiler
2)
a bypass line around the boiler
3)
a reduced pressure backflow assembly ahead of the boiler feedwater valve
4)
an air gap between the potable water system and the boiler feedwater system
3)
a reduced pressure backflow assembly ahead of the boiler feedwater valve
If a combination feedwater / cutoff is installed on an automatically-fired steam boiler, the boiler also requires:
1)
a flow switch
2)
a second low water cutoff
3)
two valves on the blowoff line
4)
a low water alarm
2)
a second low water cutoff
Chromium nickel stainless steels are classified as:
1)
series 100 stainless steels
2)
series 200 stainless steels
3)
series 300 stainless steels
4)
series 400 stainless steels
5)
series 500 stainless steels
3)
series 300 stainless steels
Incorrect Response
Type 18-8 stainless steel is often referred to as:
1)
AISI type 301 stainless steel
2)
AISI type 304 stainless steel
3)
AISI type 316 stainless steel
4)
AISI type 317 stainless steel
5)
AISI type 410 stainless steel
2)
AISI type 304 stainless steel
Incorrect Response
An exhaust head would be installed on which of the following?
1)
PRV outlet
2)
blowdown tank vent
3)
safety relief valve vent
4)
steam turbine vent
2)
blowdown tank vent
