3 Flashcards by Akram Awatta

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

C Orange with black lettering

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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 Vapour system

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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

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

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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.

B Cup

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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.

B primary loop circuit.

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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

C special high sulphured content cutting
oil

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

B Variable

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

C 1

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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 Boiler water is traveling into the
system with the steam

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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 Limited

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

C Nitric and hydrofluoric.

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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%

C 50%

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

A flow

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

B Yellow

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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.

D Hydrogen sulphide.

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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.

B Constant support hanger.

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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) 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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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

D 4.5 feet

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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.

B a float control in the receiver tank

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

D Double cut.

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

D 93

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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.

C repairs are frequently needed.

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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.

D Type D.

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

E Manganese

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

B 13 mm

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.

B Convection re-heater.

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.

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

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.

C distortion is at a minimum.

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

D Siloxane

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

C Use a heat resistant gasket spot glued to the liner

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 Separates gases from the heating medium

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

D 335

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

A F

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 Knife gate valve.

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

C green

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.

C A clean and flush is required.

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.

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

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

D Centre to centre and face to centre

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

D Joining metals using brass

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 The gas regulator adjusted pressure.

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 S

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

C They use tap water

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

C Mark the circumference with a felt pen following pipe insertion

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

B Positive Displacement.

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

C 1

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

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

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.

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

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.

C B149.1 Natural gas and Propane Installation Code

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

C manufactured gas

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

D III

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

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.

B Ammeter.

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

D Pillar

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

B 25 psig.

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

D Teflon

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

D A second low water cut off