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- 1.
The channel head cover on an exchanger is used on the__________
- A.
Bundle
- B.
Nozzles
- C.
Shell side
- D.
Tube side
Correct Answer
D. Tube side -
- 2.
Who is responsible for housekeeping?
- A.
Laborers
- B.
Helpers
- C.
Individual workers
- D.
Sub-contractors
Correct Answer
C. Individual workers -
- 3.
Where is a demister pad usually located?
- A.
Bottom of tower
- B.
Top of tower
- C.
Side of tower
- D.
At the sump
Correct Answer
B. Top of tower -
- 4.
What is the standard hydro-test pressure after a routine boiler repair?
- A.
Operating pressure
- B.
Design pressure
- C.
1 1/2 times the operating pressure
- D.
1 1/2 times the design pressure
Correct Answer
C. 1 1/2 times the operating pressure -
- 5.
1. All of the following are parts of a tower EXCEPT
- A.
Clips
- B.
A downcomer
- C.
An internal man-way
- D.
An orfice
Correct Answer
D. An orfice -
- 6.
1. When may guards and other safety devices be removed from equipment?
- A.
When they are in the way
- B.
When they become damaged
- C.
When authorized equipment repair is being performed
- D.
When there is inadequate space in which to perform work
Correct Answer
C. When authorized equipment repair is being performed -
- 7.
1. What does “3-inch G.A.V.A.” on a piping isometric mean?
- A.
3-inch guage
- B.
3-inch gate variance
- C.
3-inch gge variance
- D.
3-inch gate valve
Correct Answer
D. 3-inch gate valve -
- 8.
1. What indicates the direction of flow on a check valve?
- A.
Flange size
- B.
The arrow on the valve
- C.
Valve seat
- D.
Pressue rating
Correct Answer
B. The arrow on the valve -
- 9.
1. What types of valves are typically used on a sight glass to direct flow?
- A.
Three way valve
- B.
Gate valves
- C.
Globe valves
- D.
Plug valves
Correct Answer
A. Three way valve -
- 10.
1. Why are metal tags installed on 90-degree turns on reactors?
- A.
To comply with company policy
- B.
So that leaks can be documented
- C.
For inspection puropses
- D.
Tags are not required by DOT
Correct Answer
C. For inspection puropses -
- 11.
1. Why is a Monel gasket used in HF acid piping?
- A.
Because of it's high resistance to acid
- B.
Because it willcompress readily when subjected to pressure
- C.
Because it will flex to adjust with any pipe movement
- D.
Because of it's high tensile strength
Correct Answer
A. Because of it's high resistance to acid -
- 12.
1. Dampers are used on the PRIMARY air ports to control the__________
- A.
Burner fuel supply
- B.
Pressure on the primary wind box
- C.
Air flow into the furnace
- D.
Air out of the box
Correct Answer
C. Air flow into the furnace -
- 13.
1. What should be verified before a wall burner is pulled for inspection?
- A.
The feed valve must be shut
- B.
The fuel gas valve must be shut
- C.
Lube oil valve must be shut
- D.
The quench oil valve must be shut
Correct Answer
B. The fuel gas valve must be shut -
- 14.
1. A 1-inch plate is to be cut. Why should an acetylene regulator on a cutting rig NOT be adjusted over, 15 psi?
- A.
Most acetylene cylinders are too small to put this volume of flow
- B.
It costs the company money
- C.
Acetylene is unstable above this pressure
- D.
Most cutting torches will not accept this pressure
Correct Answer
C. Acetylene is unstable above this pressure -
- 15.
1. When a tube “Dutchman” is used, what size gap should be left between the “Dutchman” and the tube?
- A.
1/8-inch bottom and 3/32-inch top
- B.
1/8-inch bottom and 1/8-inch top
- C.
1/16-inch bottom and 1/16-inch top
- D.
3/32-inch bottom and 1/8-inch top
Correct Answer
C. 1/16-inch bottom and 1/16-inch top -
- 16.
1. What is indicated by the notation “3-inch, 150#” on an isometric drawing?
- A.
3-inch radius, 150# flange
- B.
3-inch diameter, 150# torque
- C.
3-inch diameter, 150# line
- D.
3-inch diameter, 150# flange
Correct Answer
D. 3-inch diameter, 150# flange -
- 17.
1. What is the volume of a rectangular electrical box if the with is 3 ¼ inches, the length is 4 ½, and the depth is 1 ¾ inches?
- A.
26.600 cubic inches
- B.
2.560 cubic inches
- C.
0.256 cubic inches
- D.
None of the above
Correct Answer
A. 26.600 cubic inches -
- 18.
What is the pressure differential hydro-test on an exchanger?
- A.
A hydro-test that is 1 ½ times the operating pressure
- B.
A hydro-test in which the shell and tube are pressurized at the same time
- C.
A hydro-test in which the shell and tube side are hydro-tested at different times
- D.
A hydro-test that is different when fire water is used on the shell and the hydro-pump is used on the tubes
Correct Answer
C. A hydro-test in which the shell and tube side are hydro-tested at different times -
- 19.
What is a “dummy leg” used for?
- A.
Joining two pieces of pipe
- B.
Holding up tray rings
- C.
Supporting piping
- D.
Stopping pipes from moving in their rack
Correct Answer
C. Supporting piping -
- 20.
A hand-hole plug is removed. How should the hole be repaired?
- A.
Pad welding to the original size
- B.
Install a plug and fill it in with weld metal
- C.
Install a plug that is the correct size
- D.
Modify the plug and install it to fit
Correct Answer
B. Install a plug and fill it in with weld metal -
- 21.
All of the following are major components of a tower EXCEPT?
- A.
A demisster pad
- B.
Trays
- C.
Man-ways
- D.
Channel head
Correct Answer
D. Channel head -
- 22.
What do the letters “WOL” on a blueprint stand for?
- A.
Water On Line
- B.
Weld-O-Let
- C.
Weld on Line
- D.
Weld On Level
Correct Answer
B. Weld-O-Let -
- 23.
A right triangle has three angles that add up to 180 degrees. What are the sizes of each of each of the three angles?
- A.
36, 90, 54 degrees
- B.
50, 45, 85 degrees
- C.
68, 45, 67 degrees
- D.
95, 40, 45 degrees
Correct Answer
C. 68, 45, 67 degrees -
- 24.
What are spacers used for when an exchanger is blinded?
- A.
They are used instead of a gasket on one side of the exchanger flange
- B.
They are used to space open the exchanger side for steaming or nitrogen purge
- C.
They are used to strengthen a thin slip blind
- D.
They are used to achieve proper bolt engagement
Correct Answer
D. They are used to achieve proper bolt engagement -
- 25.
Eye bolts, anchor bolts, and self-tapping bolts ate all types of__________
- A.
Fasteners
- B.
Aligning tools
- C.
Trim
- D.
Test equipment
Correct Answer
A. Fasteners -
- 26.
How much is 3-inches in hundredths of a foot?
- A.
0.15
- B.
0.25
- C.
0.35
- D.
0.5
Correct Answer
B. 0.25 -
- 27.
Why does an operator rod-out a drain valve?
- A.
To see if the valve is working
- B.
To ensure the line is clear
- C.
To ensure the line is pressured up
- D.
To see is the valve is within specs
Correct Answer
B. To ensure the line is clear -
- 28.
Typically, what is the hydro-test pressure of an exchanger with an operating pressure of 400 psi?
- A.
400 psi
- B.
500 psi
- C.
600 psi
- D.
800 psi
Correct Answer
C. 600 psi -
- 29.
What holds the trays to the rings in a tower?
- A.
Weir plates
- B.
Down-comers
- C.
Tray clips
- D.
Ring clamps
Correct Answer
D. Ring clamps -
- 30.
1. What grade number is found on the bolts on a reactor that operates at high temperatures? a. L-5 b. A-35 c. B-16 d. B-7
- A.
L-5
- B.
A-35
- C.
B-16
- D.
B-7
Correct Answer
C. B-16 -
- 31.
Which of the following items are used for heavy rigging?
- A.
Rope and chain link
- B.
Slings, shackels, and spreader beam
- C.
Chain, rope, bolts, and nuts
- D.
Lifting eye and rope
Correct Answer
B. Slings, shackels, and spreader beam -
- 32.
What does a grooved nut on an oxyacetylene rig indicate?
- A.
The right hand thread is for oxygen use only
- B.
The left hand thread is for oxygen use only
- C.
The right hand thread is for acetylene use only
- D.
The left hand thread is for acetylene use only
Correct Answer
D. The left hand thread is for acetylene use only -
- 33.
What are thermocouples used for?
- A.
Measuring the water flow through tubes
- B.
Measuring the gas temperature in the furnance
- C.
Indicating the temperature of the metal to which it is attached
- D.
Indicating the steam flow through the holes
Correct Answer
B. Measuring the gas temperature in the furnance -
- 34.
Which gas passes through the center in a cutting torch tip?
- A.
Acetylene
- B.
Oxygen
- C.
Argon
- D.
Nitrogen
Correct Answer
B. Oxygen -
- 35.
What should be done before furnace fittings for tube replacements are grounded?
- A.
The spring canister should be inspected
- B.
The inside of the fitting should be inspected
- C.
The air tugger should be inspected
- D.
The retaining pin should be inspected
Correct Answer
B. The inside of the fitting should be inspected -
- 36.
1. What should be used on the bolts of a reactor that operates at high temperatures? a. Heavy-oil b. Teflon c. Nickel anti-seize d. WD-40
- A.
Heavy oil
- B.
Teflon
- C.
Nickel anti-seize
- D.
WD-40
Correct Answer
C. Nickel anti-seize -
- 37.
What determines the type of bolts to be put back in an exchanger so that it can be bolted back together?
- A.
The amount of threads on stud bolts
- B.
The service exchanger is used for and the stencil on the old bolts
- C.
Size does not matter if the lenght is the same as the length of the old bolts
- D.
Any available bolts may be used
Correct Answer
B. The service exchanger is used for and the stencil on the old bolts -
- 38.
What type of diagram provides and overall view of the operational aspects of a process system?
- A.
Plan view
- B.
P&ID
- C.
Section view
- D.
Isometric drawing
Correct Answer
D. Isometric drawing -
- 39.
What is the basic formula for determining the CORRECT wrench size, per stud size?
- A.
2 times the stud diameter
- B.
1 1/2 times the stud diameter plus 1/4 inch
- C.
1 1/2 times the stud diameter plus 1/8 inch
- D.
1 1/2 times the stud diameter plus 1/16 inch
Correct Answer
C. 1 1/2 times the stud diameter plus 1/8 inch -
- 40.
What is a hammer wrench commonly used for?
- A.
Aligning flanges
- B.
Breaking difficult bolts
- C.
Chiseling try hardware
- D.
Separating flanges
Correct Answer
B. Breaking difficult bolts -
- 41.
What is the standard hand signal used to instruct a crane operator to lower a load?
- A.
Point an index finger skyward and move it in a circular motion
- B.
Point an index finger at the load and move it in a circular motion
- C.
Point an index finger skyward and move it in a circular motion while hoding the other hand flat above the signal
- D.
Point an index finger to the ground and move it in a circular motion while holding the other hand directly below the signal
Correct Answer
D. Point an index finger to the ground and move it in a circular motion while holding the other hand directly below the signal -
- 42.
What should a boilermaker do first when preparing for the evacuation of a reactor?
- A.
Evacuate the unit
- B.
Purge the reactor with nitrogen
- C.
Change piping on top of reactor for burn-off
- D.
Blind-off the reactor
Correct Answer
D. Blind-off the reactor -
- 43.
1. Elevation adjustments on the pipe hanger should be made at which point?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. C -
- 44.
What should a boilermaker do to verify hydro-test pressure for exchangers?
- A.
Check the information plate or drawing
- B.
Call the manufacturer or shipping company
- C.
Check the standard operating procedures and the fire and safety guidelines
- D.
Notify the control room operator
Correct Answer
D. Notify the control room operator -
- 45.
When performing a welding repair, you MUST have a copy of what on hand?
- A.
The welding procedure specification
- B.
The quality assurance manual
- C.
The contractor's insurance certificate
- D.
The contractor's personnel records
Correct Answer
A. The welding procedure specification -
- 46.
If the hook is loaded off-center, the safe working load is__________
- A.
Decreased
- B.
Increased
- C.
Twice the rated capacity of the hook
- D.
Not affected
Correct Answer
A. Decreased -
- 47.
Rigging is to be done with a wire choker over a beam. When is a softener REQUIRED?
- A.
When the load is heavy
- B.
At all times
- C.
If the load is to be shifted
- D.
If the steel edges are sharp
Correct Answer
B. At all times -
- 48.
Why are there ball checks on sight-glass valves?
- A.
To allow easier filling within the sight-glass
- B.
To stop the flow if there are leaks or if the sight-glass breaks
- C.
To permit the sight-glass to be removed without interrupting the service
- D.
To permit easy installation and removal of valves
Correct Answer
B. To stop the flow if there are leaks or if the sight-glass breaks -
- 49.
MOST spring cans are made of what material?
- A.
Brass alloy
- B.
Aluminum
- C.
Copper
- D.
Steel
Correct Answer
D. Steel -
- 50.
What type of power tools should be selected for use in a no-spark producing areas?
- A.
Electric tools
- B.
Pneumatic tools
- C.
Battery-operated tools
- D.
Gas powered tools
Correct Answer
B. Pneumatic tools -
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 22, 2022Quiz Edited by
ProProfs Editorial Team -
May 13, 2009Quiz Created by
Freedomfighter
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