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Book 1 > Chapter 5-10 > Flashcards

Chapter 5-10 Flashcards

1
Q 
A low water cut-off device\_\_\_\_\_?
A) Is located on the gauge glass
B) Can be located any place on a boiler
C) Must always be equipped with isolation valves
D) Should be tested once a week
E) Is required by law on buildings
A

D) Should be tested once a week

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2
Q 
A fitting which is used to show the water level in the boiler is the\_\_\_\_\_?
A) Water glass
B) Gauge glass
C) Boiler glass
D) Steam glass
E) Water column
A

B) Gauge glass

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3
Q

A safety valve which simmers and refuses to seat after it has been tested should be_____?
A) Replaced with a new valve
B) Adjusted by the operator
C) Repaired by a boiler fitter
D) Carefully struck with a hammer to reseat
E) Gagged tightly to stop

A

A) Replaced with a new valve

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4
Q 
To prevent steam from entering a pressure gauge you should install a\_\_\_\_\_?
A) Steam trap
B) Check valve
C) Pet cock
D) Drain the boiler
E) Pipe siphon
A

E) Pipe siphon

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5
Q 
Tri cocks are installed on the water columns of boilers to\_\_\_\_\_?
A) Check for steam
B) Test the low water cut-off
C) Check the water level in the boiler
D) Drain the boiler
E) Release the pressure in the boiler
A

C) Check the water level in the boiler

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6
Q 
All pipe fittings not properly or clearly identified should be\_\_\_\_\_?
A) Rejected
B) Used at a lower pressure
C) Hydrotested before being put into use
D) Annealed
E) Welded only
A

A) Rejected

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7
Q 
Before accepting any pipe fitting for use in a power plant it must be clearly marked with the manufacturer's trademark, material designation and the\_\_\_\_\_?
A) Size designation
B) C.R.N
C) Quality control stamp
D) Service designation
E Inspector's number
A

D) Service designation

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8
Q

Boiler fittings are_____?
A) Any pipe work connected to the boiler
B) Any connection to the boiler furnace
C) The outside casing of the boiler
D) Connecting the boiler to the foundation
E) Directly attached to the pressure of the boiler

A

E) Directly attached to the pressure of the boiler

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9
Q 
Boiler fittings must comply with\_\_\_\_\_?
A) American Standards of Mechanical Engineering, Section 9
B) Canadian Standards Association, B52
C) Provincial Boilers Regulations
D) A.S.M.E. , CSA and Provincial Acts
E) Manufacturers Service Designation Act
A

D) A.S.M.E. , CSA and Provincial Acts

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10
Q

A low pressure steam boiler pressure gauge_____?
A) Is a required boiler fitting
B) Is not a required boiler fitting
C) Indicates the altitude and temperature of the boiler water
D) Must have a scale reading from 0 to 103 kPa
E) May be located on the expansion tank

A

A) Is a required boiler fitting

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11
Q

Which of the following is not mandatory on a low pressure steam boiler?
A) Must have a steam gauge
B) Must have a pipe siphon between the boiler and the steam gauge
C) Must have a shut-off cock adjacent to the steam pressure gauge
D) Must have the steam pressure gauge scale graduated to not less than 210 kPa (30 psi) or more than 420 kPa (60 psi)
E) Must have an inspector’s gauge connection

A

E) Must have an inspector’s gauge connection

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12
Q

A pipe siphon_____?
A) Connects the gauge glass to the boiler
B) Fills with water to protect the steam pressure gauge
C) Is not required on a low pressure steam boiler
D) Prevents water from leaving the boiler
E) Is another name for a Hartford loop

A

B) Fills with water to protect the steam pressure gauge

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13
Q 
If the low pressure steam boiler is shut down and cold but the steam pressure indicates 103 kPa (15 psi).  Your immediate action would be\_\_\_\_\_?
A) Inform the boiler inspector
B) Inform your supervisor
C) Drain the boiler
D) Check the pressure gauge
E) Check the boiler furnace
A

D) Check the pressure gauge

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14
Q

If you are starting up a low pressure steam boiler and steam is strongly blowing all of the steam drain lines but the boiler steam pressure gauge indicates zero. Your immediate action would be_____?
A) Inform the boiler inspector
B) Inform your supervisor
C) Drain the boiler
D) Check the furnace
E) Shut down the boiler and check the pressure gauge

A

E) Shut down the boiler and check the pressure gauge

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15
Q

A safety valve for a low pressure steam boiler must_____?
A) Protect the boiler from operating below a specific minimum pressure
B) Protect the boiler from operating above a specific maximum pressure
C) Be greater than 125mm (5 in) in diameter
D) Not allow the boiler pressure to rise greater than 245 kPa (35 psi)
E) Have an isolating valve next to the boiler

A

B) Protect the boiler from operating above a specific maximum pressure

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16
Q

The safety valve popping pressure is adjusted by_____?
A) The blowdown ring setting
B) Raising or lowering the valves position
C) The lifting lever
D) An authorized person
E) The boiler inspector

A

D) An authorized person

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17
Q

Safety valves must be mounted on a low pressure steam boiler_____?
A) In the horizontal position
B) In the vertical position
C) At the lowest practical part of the boiler
D) With a shut off valve on the inlet
E) By welding to prevent leaks

A

B) In the vertical position

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18
Q

Safety valves can be repaired by_____?
A) A journeyman boiler fitter
B) The plant operator how has completed the Fifth Class course
C) A First Class Power Engineer
D) There are safety valves on each module
E) None of the above

A

E) None of the above

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19
Q

The purpose of the boiler glass is_____?
A) To show steam pressure
B) To show when the boiler is completely full of water
C) To show the water level in the boiler
D) To show the total dissolved solids (TDS) content of the boiler
E) To make the boiler look interesting

A

C) To show the water level in the boiler

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20
Q

Which of the following is not an advantage of using a water column_____?
A) It facilitates the placement of the water gauge
B) It dampens the water level agitations
C) It traps sludge and sediment
D) It permits the water connections to be placed lower and steam connections to be placed higher
E) It permits a large number of boiler fitting to be connected to the boiler

A

E) It permits a large number of boiler fitting to be connected to the boiler

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21
Q

Boiler steam stop valves_____
A) Must be installed in the steam outlet piping to isolate the boiler from the heating system
B) Must be installed in all risers on a hot water heating system
C) Must be installed after the feed pump on the feedwater line
D) Must be of the ball type
E) Are not required if non-return valves are used

A

A) Must be installed in the steam outlet piping to isolate the boiler from the heating system

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22
Q

A low pressure steam boiler blowoff connection and valve is required to
A) Empty the water legs before starting the boiler
B) Remove highly concentrated steam
C) Drain the boiler
D) Skim any foam from the surface of the water
E) Protect the boiler from low water level

A

C) Drain the boiler

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23
Q 
Hot water boilers do not require which of the following boiler fittings\_\_\_\_\_?
A) Pressure gauge
B) Gauge glass
C) Blow off connection and valve
D) Thermometer
E) Pressure relief valve
A

B) Gauge glass

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24
Q

The purpose of an expansion tank is_____?
A) To remove air from the system
B) To store the steam ready for use
C) To allow for the expansion of the pipes from hot to cold
D) To provide a central location to add and mix boiler chemicals
E) To provide storage space for excess water due to expansion

A

E) To provide storage space for excess water due to expansion

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25
Q 
The burning of fuel in a furnace in order to produce heat is referred to as\_\_\_\_\_?
A) Mixing
B) Combustion
C) Entropy
D) Endothermic
E) Firing
A

B) Combustion

26
Q 
Devices which react either on the infra-red or ultra-violet rays emitted by the flames of the fire are\_\_\_\_\_?
A) Powerpiles
B) Photoelectric cells
C) Stack-mounted relays
D) Thermocouples
E) Radiometer
A

B) Photoelectric cells

27
Q 
A \_\_\_\_\_ is used to maintain a fairly steady water level in a condensate receiver.
A) Foot valve
B) Circuit breaker
C) Switch gear
D) Float switch
E) Level gauge
A

D) Float switch

28
Q 
A compound gauge used on many low pressure steam systems reads pressure on one side of the scale and\_\_\_\_\_on the other side of the scale
A) Temperature
B) Altitude
C) Vacuum
D) Flow
E) Density
A

C) Vacuum

29
Q 
On a low pressure steam heating system, a device that prevents the back-up of boiler water into a return line in the event of a check valve failure is a\_\_\_\_\_?
A) Hartford loop
B) Connecticut loop
C) Whaler loop
D) Halifax l00p
E) Ball check
A

A) Hartford loop

30
Q 
The type of control which is frequently used on small boilers and heating furnaces to regulate upper and lower pressure and temperature limits by starting and stopping the burner is\_\_\_\_\_?
A) Regulating control
B) Monitoring control
C) Amplified control
D) On-off control
E) Proportional control
A

D) On-off control

31
Q

The differential spring of an on-off control switch_____?
A) Prevents frequent starting and stopping (cycling) of a burner
B) Maintains a differential pressure between the boiler steam pressure and feedwater pressure
C) Ensures positive action of the switch
D) Will shut down the burner if the steam pressure rises above a predetermined high limit
E) Permits the boiler to operate in the modulating mode

A

A) Prevents frequent starting and stopping (cycling) of a burner

32
Q 
A bourdon tube is often shaped in the form of a "C" having an arc span of \_\_\_\_\_ degrees.
A) 290
B) 360
C) 180
D) 270
E) 90
A

D) 270

33
Q

A magnetic low water cut-off_____?
A) is open when the plunger is in the magnetic field
B) Incorporates an electromagnet
C) Is closed when the plunger is in the magnetic field
D) Has a pressurized mercury bulb
E) Utilizes alternating current

A

C) Is closed when the plunger is in the magnetic field

34
Q 
A low water cut-off device which has the advantage of no moving parts and thus eliminates the possibility of a mechanical failure is the\_\_\_\_\_?
A) Analog type
B) Float-operated type
C) Sonar type
D) Electric-probe type
E) Magnetic type
A

D) Electric-probe type

35
Q 
A low air pressure cut-off is used on boilers with\_\_\_\_\_?
A) A forced draft fan or blower
B) Inlet vane dampers
C) Natural draft
D) Steam driven feedwater pumps
E) An induced draft fan
A

A) A forced draft fan or blower

36
Q 
Generally, steam pressure gauges; operate with the use of\_\_\_\_\_?
A) A hydraulic tube
B) A"U" tube
C) The lip of the valve
D) Direct current power
E) A bourdon tube
A

E) A bourdon tube

37
Q 
When the burner of a boiler remains in operation and the amount of fuel and air flowing to the burner is varied as the steam pressure varies, this type of control is named a\_\_\_\_\_?
A) Modulating control
B) Single element control
C) Two element control
D) Three element control
E) Multi-stage variable CFM
A

A) Modulating control

38
Q

One method of testing the flame safeguard of a boiler is to_____?
A) Blow the boiler down
B) Jump out the fuel solenoid
C) Remove the scanner from its sighting tube and cover it
D) Increase the operating control pressure upward to safety valve pressure level
E) Shut down the boiler fan

A

C) Remove the scanner from its sighting tube and cover it

39
Q 
When the pressure scale on an operating limit control indicates a cut-out pressure of 100 psi (700 kPa) and the differential scale shows 5 psi (35 kPa), then the boiler will start-up when the pressure reaches\_\_\_\_\_?
A) 70 kPa (10 psi)
B) 665 kPa (95 psi)
C) 735 kPa (100 psi)
D) 735 kPa (105 psi)
E) 35 kPa (5 psi)
A

B) 665 kPa (95 psi)

40
Q

Before lighting off a boiler you should always purge the furnace in order to_____?
A) Prove fan and gas valve operation
B) Blow out any soot which may have collected in the tubes
C) Remove any combustible gases which may have collected in the furnace
D) Dry out the brickwork and check for leaks
E) Prove that the furnace and stack are clear

A

C) Remove any combustible gases which may have collected in the furnace

41
Q 
A blowdown drain connection is made at the \_\_\_\_\_ of the boiler?
A) Midpoint
B) Lowest point
C) Highest point
D) Front
E) Back
A

B) Lowest point

42
Q 
A pipe fitting's service designation would include\_\_\_\_\_?
A) Steam pressure
B) Steam pipe size
C) Welding procedures and qualification
D) Pressure and temperature rating
E) Length of the fitting
A

D) Pressure and temperature rating

43
Q 
A pressure reading below the minimum pressure setting on an altitude gauge in a hot water system, will be an indication of\_\_\_\_\_?
A) Loss of water
B) Loss of flow
C) Low temperature in the system
D) Low pH in the water
E) Low pressure in the system THIs
A

A) Loss of water

44
Q

The adjustment and calibration of a safety valve may be done by_____?
A) A first class power Engineer
B) Any government boiler Inspector
C) A professional Engineer
D) A certified and registered repair company
E) Both B and C

A

D) A certified and registered repair company

45
Q 
The ASME code recommends that the try level test be performed
A) Every shift
B) Once a day
C) Once a week
D) Once a month
A

D) Once a month

46
Q 
Which of the following is not required on a low pressure steam boiler?
A) Pressure gauge
B) Safety valve
C) Water gauge glass
D) A high limit control
E) Expansion tank
A

E) Expansion tank

47
Q

A low pressure steam boiler equipped with a combination low water fuel cut-off/pump control, shall also have_____?
A) low water fuel cut-off control, serving no other purpose
B) A feeder valve
C) An audible low water alarm
D) A second feedwater pump

A

A) low water fuel cut-off control, serving no other purpose

48
Q

The function of a high limit control is to_____?
A) Shut down the burner if the water level is too high
B) Start the burner if pressures above 15 psi (103 kPa) is required
C) Shut down the burner if the operating limit fails
D) Stop the burner on a low water condition

A

C) Shut down the burner if the operating limit fails

49
Q

The function of a high level control is_____?
A) To assist in returning condensate to the boiler room
B) To reduce water hammer
C) To lower the temperature of the condensate
D) Both b and c

A

A) To assist in returning condensate to the boiler room

50
Q 
Controlled devices in a pneumatic system are operated by\_\_\_\_\_?
A) Hydraulics
B) Compressed air
C) Low voltage
D) Solenoid valves
E) Balancing valves
A

B) Compressed air

51
Q 
Which is not a form of flame detection device?
A) Flame rod
B) Thermopile
C) Photoelectric cell
D) Flame signaler
A

D) Flame signaler

52
Q 
Which is not a form of a pilot light?
A) Interrupted
B) Standing or constant
C) Intermittent
D) Intermediate
A

D) Intermediate

53
Q 
Which is not a method for removing air from a heating system\_\_\_\_\_?
A) Air vents
B) Deaerators
C) Pre-purging
D) Air separators
A

C) Pre-purging

54
Q 
Which is not required on a hot water boiler heating system?
A) Expansion tank
B) Air separator
C) Thermometer
D) Automatic fill valve
E) Condensate tank
F) Siphon on pressure gauge
G) Both E and F
A

G) Both E and F

55
Q 
Raising the pressure in a boiler until the safety valve opens is called the\_\_\_\_\_?
A) Pop test
B) Blowdown test
C) Try lever test
D) Cut-off test
A

A) Pop test

56
Q 
A flame detection device\_\_\_\_\_?
A) Can be used to detect a pilot flame
B) Sense the main flame
C) Stop fuel supply in the absence of flame
D) A, B, and C
E) A and B
F) B and C
A

D) A, B, and C

57
Q 
The pressure at which a safety valve opens and closes is known as the \_\_\_\_\_?
A) Safe margin
B) Blowdown of the valve
C) Range of the valve
D) Differential of the valve
A

B) Blowdown of the valve

58
Q 
A device used on hot water heating systems to regulate water supply at pre-set temperatures is\_\_\_\_\_?
A) Modular
B) Temperature limiter
C) Thermocouple
D) Aquastat
A

D) Aquastat

59
Q 
A high limit control on a steam boiler responds to \_\_\_\_\_?
A) Pressure
B) Temperature
C) An electric signal
D) Both A and B
A

D) Both A and B

60
Q 
In a hot water heating system, the pressure and water level is maintained by the\_\_\_\_\_?
A) Expansion tank
B) Make-up valve
C) Feedwater pump
D) Automatic fill valve
A

D) Automatic fill valve

Book 1 (3 decks)

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