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pipefitting > 3 > Flashcards

3 Flashcards

1
Q

Dangerous piping should be identified with?
A Yellow marking with red lettering
B Bright blue with white lettering
C Orange with black lettering
D Red with white lettering

A

C Orange with black lettering

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2
Q

A self-induced vacuum can occur in which low-pressure steam system?
A Vapour system
B One-pipe counterflow main system.
C Two-pipe gravity wet system.
D Paul

A

A Vapour system

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3
Q

Identify what way you can distinguish between equal spread and unequal
offsets?
A Unequal spread offsets narrow
centre to centre on piping after the
travel.
B Unequal spread offsets narrow
centre to centre on either side of the
travel.
C Unequal spread offsets narrow
centre to centre through the travel.
D Unequal spread offsets narrow
centre to

A

C Unequal spread offsets narrow
centre to centre through the travel.

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4
Q

Which of the following terms defines the accurately machined bore in a fitting into which
the pipe fits?
A Flux hook.
B Cup
C Bore sleeve.
D Capillary cup.

A

B Cup

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5
Q

A hydronic system where the valves open and close changing the requirements for the total
gpm on the pump is the:
A wild loop circuit.
B primary loop circuit.
C individual zone circuit.
D two-pipe system.

A

B primary loop circuit.

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6
Q

Which of the following lubricants should be used for threading stainless steel?
A crank case oil
B mineral lard oil
C special high sulphured content cutting
oil
D lubricant for oil-less cutters

A

C special high sulphured content cutting
oil

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7
Q

What are displacement centrifugal pumps know as?
A Open
B Variable
C Positive
D Common

A

B Variable

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8
Q

The number of horsepower equivalent to 33,000 foot pounds per minute is?
A 5
B 2
C 1
D 2 1/2

A

C 1

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9
Q

Water hammering is occurring due to priming of a steam boiler. What is the main
cause of the problem
A Boiler water is traveling into the
system with the steam
B Condensate is returning to the boiler
under pressure
C Both the continuous and intermittent
blow-downs are open
D Steam is returning to the boiler
through the return main

A

A Boiler water is traveling into the
system with the steam

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10
Q

At 72 degrees Fahrenheit, a type 2 polyvinyl chloride thermoplastic has a chemical
resistance to wet
chlorine
A Limited
B Unsatisfactory
C Satisfactory
D Unlimited

A

A Limited

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11
Q

What acids are the usual pickling acids?
A Formic and acetic.
B Phosphoric and ferric.
C Nitric and hydrofluoric.

A

C Nitric and hydrofluoric.

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12
Q

When sizing an air cushion tank for 50% glycol, how much larger than a
water system would it have to be?
A 35% B 20%
C 50% D 30%

A

C 50%

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13
Q

What does a pump produce?
A flow
B force
C horsepower
D pressure

A

A flow

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14
Q

Piping systems that transport oxygen are in ….. color.
A Red
B Yellow
C White
D Green

A

B Yellow

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15
Q

Which of the following dissolved gas found in water is found mostly in well water supplies
or other anaerobic sources?
A Radon
B Carbon Dioxide.
C Oxygen
D Hydrogen sulphide.

A

D Hydrogen sulphide.

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16
Q

Where vertical movement due to thermal expansion or contraction is
greater than ½”, which of the following supports should be used?
A Cantilever bracket.
B Constant support hanger.
C Riser clamp.
D Steel clevis hanger.

A

B Constant support hanger.

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17
Q

Which of the following is a characteristic of R-22?
A It is a stable non toxic, non corrosive,
non irritating and non flammable
product with a vaporization
temperature of minus 41.4
B It is used as a refrigerant in medium
and large sized absorption units.
C It is commonly known as ammonia. D It is the first fluorocarbon refrigerant
to successfully replace earlier toxic
and dangerous products.
E It is usually used in low temperature
refrigeration system

A

a) It is a stable non toxic, non corrosive,
non irritating and non flammable
product with a vaporization
temperature of minus 41.4

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18
Q

Raymond Ray is installing Schedule 80 polyvinyl chloride pipe. The pipe will be carrying
water at a
temperature of 140 degrees F. The 2-inch pipe will require support every?
A 3.5 feet B 3.7 feet
C 4.2 feet D 4.5 feet

A

D 4.5 feet

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19
Q

On gravity return low-pressure steam systems the condensate pump is operated by:
A a pressure switch in the water supply
line.
B a float control in the receiver tank
C a flow switch located in the
condensate return line.
D manually turning it on and off.

A

B a float control in the receiver tank

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20
Q

Which of the following is not a cut type for a file?
A Rasp B Curved tooth.
C Double cut. D Double cut.

A

D Double cut.

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21
Q

Fibreglass pipe can handle fluids with temperatures up to ___F for a continuous duration.
A 110 B 250
C 180 D 93

A

D 93

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22
Q

Re-examination of the trap and its situation should take place if:
A you experience water hammering.
B condensate is leaking out of the trap.
C repairs are frequently needed.
D the line pressure starts to fluctuate.

A

C repairs are frequently needed.

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23
Q

On a hydraulic line, what is the correct type of ring type joint RTJ gasket to
be installed?
A Spiral wound.
B Type A.
C Crush Ring.
D Type D.

A

D Type D.

24
Q

What water impurity forms a dark almost black precipitate?
A Iron B Sulphate
C Silica D Aluminum
E Manganese

A

E Manganese

25
Q

When referring to banding external tracing to process lines, it is recommended to use
________ wide bands.
A 8 mm B 13 mm
C 23 mm D 4 mm

A

B 13 mm

26
Q

Which piece of equipment is the exhaust steam from the high pressure
turbine piped to?
A Pendant super-heater.
B Convection re-heater.
C Convection super-heater.
D Pendant re-heater.

A

B Convection re-heater.

27
Q

When looking at an elevation view, why is it critical to know which view it is
with reference to the north arrow?
A To ensure the elevations for both the
equipment and piping are
correct.
B To ensure the locating and
positioning of all equipment and
piping
is correctly orientated.
C In the event the north arrow needs to
be rotated to allow a less
cluttered view in isometric.

A

B To ensure the locating and
positioning of all equipment and
piping

28
Q

One of the key advantages to using short-circuit metal transfer technique is
A the high rate of burn off. B there are no weld faults.
C distortion is at a minimum. D it is splatter free.

A

C distortion is at a minimum.

29
Q

When referring to heat transfer fluids, a __________ based fluid would be used in an
application where the system temperature is above 315 degrees Celsius.
A Glycol
B water
C steam
D Siloxane

A

D Siloxane

30
Q

What is the suggested procedure for butt welding concrete lined steel
pipe?
A Use a non-consumable metallic
backing ring.
B Use a consumable metallic backing
ring.
C Use a heat resistant gasket spot
glued to the liner
D Use a type ”D” RTJ gasket spot
glued to the liner

A

C Use a heat resistant gasket spot
glued to the liner

31
Q

On a hydronic heating system what is the purpose of a line scoop?
A Separates gases from the heating
medium
B Removes gases from the heating
medium.
C Controls the expansion of the
heating medium

A

A Separates gases from the heating
medium

32
Q

The latent heat of fusion of ice is ______ kJ/Kg.
A 144
B 154
C 970
D 335

A

D 335

33
Q

Which of the following WHMIS classifications may react with water to release a toxic gas?
A F
B B
C A
D D

A

A F

34
Q

Which type of valve would be used on a pipe line that carries boiler ash in
slurry?
A Knife gate valve.
B Solid wedge gate valve.
C Composition disc globe valve.
D Plug disc globe valve

A

A Knife gate valve.

35
Q

The colour of an oxygen hose on an oxyacetylene set is usually ________ .
A red B yellow
C green D black

A

C green

36
Q

Steam piping for a Cast Iron Sectional steam boiler has been replaced with
new A105 pipe. Before the boiler will run properly, which of the following
procedures will be required?
A Apply 150 psig test on boiler and
system.
B A flue gas analysis is required.
C A clean and flush is required.
D An operational boiler start-up is
required.

A

C A clean and flush is required.

37
Q

Which of the following describes a black iron pipe finish?
A It is used where close tolerances are
required.
B A glass lined pipe, super-heated then
cooled fast.
C It is thoroughly cleaned with the ends
finished with a protective coating of
lacquer.
D It is treated in a special way to
prevent flaking and dusting.

A

C It is thoroughly cleaned with the ends
finished with a protective coating of
lacquer.

38
Q

On a single line pipe drawing what two methods of measurement would be
found?
A End to end and face to centre
B End to end and centre to end.
C End to end and face to end
D Centre to centre and face to centre

A

D Centre to centre and face to centre

39
Q

Brazing is?
A Fine soldering
B Soldering
C Soft soldering
D Joining metals using brass

A

D Joining metals using brass

40
Q

What does the standing pressure test tell you?
A The gas regulator adjusted pressure.
B The gas supply line pressure.
C The difference in pressure between
supply and appliance.
D The water line pressure.

A

A The gas regulator adjusted pressure.

41
Q

In gas and oil refinery plants, what category of service is considered a contained
commodity which is not flammable, not toxic and not capable of damaging human tissue?
A S
B L
C M
D D

A

A S

42
Q

Which of the following is a characteristic of a pan type humidifier?vvvvv
A They have good steam distribution.
B More than one of the above.
C They use tap water
D They are usually heated by gas

A

C They use tap water

43
Q

A press-fit joint is being assembled. What must be done at this joint location
A Grind the edge to a 35° bevel and
insert into joint
B Wash the joint inside and out with
muriatic acid
C Mark the circumference with a felt
pen following pipe insertion
D Clean the joint with sand cloth and
apply acid flux

A

C Mark the circumference with a felt
pen following pipe insertion

44
Q

What type of pump uses a concentric casing and are high speed regenerative pumps?
A Rotary
B Positive Displacement.
C Axial Flow.
D Diaphragm

A

B Positive Displacement.

45
Q

When referring to a low-pressure steam boiler, the minimum size of boiler blow-off valve
for a boiler with over 100 sq. ft of heating space is ________ inch.
A 2
B 1/2
C 1
D 3/4

A

C 1

46
Q

With electric overhead cranes what signal multiple trolleys?
A Extend arm and hand palm down,
using the opposite hand to indicate
the required motion, signal toward the
open palm
B With arm extended forward and
slightly raised with hand open make a
pushing motion in the direction of
travel
C Extend arm with palm down and hold
in a rigid position
D Make a fist with a palm up and thumb
pointing in the direction of travel, jerk
hand horizontally
E Raise one finger for the use of block
marked #1 and two fingers for the use
of block marked #2
F extend arm and palm down and move
hand horizontally in a rapid motion

A

E Raise one finger for the use of block
marked #1 and two fingers for the use
of block marked #2

47
Q

If you are using a lattice boom crane, and the load needs to be lifted both
outward and upward, what signals must you use to place the lift?
A Raise the boom and hold the load.
B Lower the boom and hold the load and then raise the load.
C Raise the load and then lower the boom and hold the load.
D Lower the boom and hold the load.

A

B Lower the boom and hold the load and then raise the load.

48
Q

Which code, standard or reference is used for hanger spacing when
installing steel pipe containing natural gas in a service building within a
refinery?
A CSA Z662.1 Oil and Gas pipeline
systems
B ASME/ ANSI B31 Process piping
code
C B149.1 Natural gas and Propane
Installation Code
D Canadian Building Safety
Standards Reference.

A

C B149.1 Natural gas and Propane
Installation Code

49
Q

Which of the following will have the lowest supply pressure?
A propane
B butane gas
C manufactured gas
D natural gas

A

C manufactured gas

50
Q

The rules for the construction of Nuclear Power Plant Components will be covered in ASME
Section:
A II
B I
C IV
D III

A

D III

51
Q

A valve has failed on the supply header of an existing steam tracing
system. Prior to the valve failure, the system worked well. The tracing is tied into an
existingvalve on the header that was intended for future use.
After following proper start-up procedures, it is discovered that the tracing fills with
condensate. To solve the problem, what is the first thing that should done?
A Check to see if the existing valve needs to be rodded for calcification.
B Check to see if tracing is kinked.
C Check with the engineer to see if tying into the new valve overloaded the system.
D Check for blockages in the thermodynamic trap on the return
header.

A

A Check to see if the existing valve needs to be rodded for calcification.

52
Q

Which of the following tools is used to check the performance of a base
mounted hydronic pump?
A Ohmmeter.
B Ammeter.
C Millivolt meter.
D Voltmeter.

A

B Ammeter.

53
Q

Which of the following is not a cut type for a file?
A Single cut.
B Curved toot.
C Rasp
D Pillar

A

D Pillar

54
Q

What does ASME state pneumatic tests be no greater than?
A 110 psig
B 25 psig.
C 130 psig
D 75 psig

A

B 25 psig.

55
Q

What type of flange gasket material is used for intermediate pressures and temperatures
to a maximum of 260 C?
A Synthetic B Silicon
C Asbestos D Teflon

A

D Teflon

56
Q

When a combination make up water feeder and low water cutoff is
installed on an automatically fired steam boiler, which other control is
required?
A A flow switch.
B A low water alarm
C A 24 hour operator monitoring water level and pressure
D A second low water cut off

A

D A second low water cut off

pipefitting (8 decks)

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