CLASS 5 BOILER TEST STUDY
GUIDE
Exam Study Guide – Practice
Questions with Answers.
GRADED A+. Latest 2026/2027
Update.
branch connections to piping systems "made in the field" and are of welded
assembly being of pipe to pipe require what considerations... - Ans✔✔-is the
angle of insertion what the code allows
does the connection require reinforcement
did the engineer approve it
B31.1 - Ans✔✔-Power Piping - High Pressure Steam - over 15 psi
B31.9 - Ans✔✔-Building Services - Low Pressure Steam - under 15 psi
B31.5 - Ans✔✔-Refrigeration Code
,B31.3 - Ans✔✔-Normal Fluid Systems - Catagory M - co-ax sleeves/permit
required
DCEN - Ans✔✔-Direct Current Electrode Negative (TIG)
DCEP - Ans✔✔-Direct Current Electrode Positive (Stick)
Formula for circumference - Ans✔✔-pi x diameter
A friction lighter is a striker - Ans✔✔-True
What type of fitting is installed at every right angle? - Ans✔✔-Crosses
The included angle of a center punch is: - Ans✔✔-60 degrees
example of "Place of Public Assembly" - Ans✔✔-College campus
What is the minimum size pipe allowed on a control loop of a steam boiler? -
Ans✔✔-1"
Inspection of Catagory M piping is not required by a state inspector, if the
authorized owner representative performs the inspection... - Ans✔✔-True
The Chief Inspector may enter all buildings at reasonable hours for inspections,
except: - Ans✔✔-Private Residences
,When there are two blow down valves they will be which type? - Ans✔✔-One
quick opening and one slow opening
Which of the following is an example of vessels exempt from annual
inspection? - Ans✔✔-vessels in storage - those of a federal agency - Hydronic in
a private residence
The place on an isometric drawing which shows the components being used is
called: - Ans✔✔-Bill of Material
Brazing is covered under ASME section - Ans✔✔-IX (nine)
When cutting pipe with heat number, transfer the number.... - Ans✔✔-BEFORE
cutting
The letter "F", in A53F pipe stands for: - Ans✔✔-Furnace Welded
Repair permits are issued to the: - Ans✔✔-Licensed contractor doing the work
Adding a pipe branch by means of welding is allowed if... - Ans✔✔-The need for
reinforcements has been calculated
Under B31.5, pipe larger than what size is covered? - Ans✔✔-2"
, When welding stainless steel, what are the potentially dangerous oxides that
are produced? - Ans✔✔-Nickel and Chromium
What extinguishing agent is used in Class A fires? - Ans✔✔-Water
Medical sterilized smaller than ______cu. ft. are exempt? - Ans✔✔-1 1/2 cu. ft.
There is a $1,000 fine for anyone working, without a license, on pressure
piping. - Ans✔✔-True
Pool boilers are exempt if...... - Ans✔✔-the burner is wired in series with the
pump
What class of fire is burning magnesium? - Ans✔✔-Class D
Refrigerant or a/c units containing _____ cu. ft. or less of non-corrosive gases
are exempt. - Ans✔✔-3
Pressure relief devices must be approved by what agency? - Ans✔✔-ASME
(American Society of Mechanical Engineers)
When hydro testing NBEP (Non-Boiler External Piping), it must be off from the
boiler and tested at how many times the operating pressure? - Ans✔✔-1 1/2
When securing wire rope, the clips are applied: - Ans✔✔-Saddle on live end
GUIDE
Exam Study Guide – Practice
Questions with Answers.
GRADED A+. Latest 2026/2027
Update.
branch connections to piping systems "made in the field" and are of welded
assembly being of pipe to pipe require what considerations... - Ans✔✔-is the
angle of insertion what the code allows
does the connection require reinforcement
did the engineer approve it
B31.1 - Ans✔✔-Power Piping - High Pressure Steam - over 15 psi
B31.9 - Ans✔✔-Building Services - Low Pressure Steam - under 15 psi
B31.5 - Ans✔✔-Refrigeration Code
,B31.3 - Ans✔✔-Normal Fluid Systems - Catagory M - co-ax sleeves/permit
required
DCEN - Ans✔✔-Direct Current Electrode Negative (TIG)
DCEP - Ans✔✔-Direct Current Electrode Positive (Stick)
Formula for circumference - Ans✔✔-pi x diameter
A friction lighter is a striker - Ans✔✔-True
What type of fitting is installed at every right angle? - Ans✔✔-Crosses
The included angle of a center punch is: - Ans✔✔-60 degrees
example of "Place of Public Assembly" - Ans✔✔-College campus
What is the minimum size pipe allowed on a control loop of a steam boiler? -
Ans✔✔-1"
Inspection of Catagory M piping is not required by a state inspector, if the
authorized owner representative performs the inspection... - Ans✔✔-True
The Chief Inspector may enter all buildings at reasonable hours for inspections,
except: - Ans✔✔-Private Residences
,When there are two blow down valves they will be which type? - Ans✔✔-One
quick opening and one slow opening
Which of the following is an example of vessels exempt from annual
inspection? - Ans✔✔-vessels in storage - those of a federal agency - Hydronic in
a private residence
The place on an isometric drawing which shows the components being used is
called: - Ans✔✔-Bill of Material
Brazing is covered under ASME section - Ans✔✔-IX (nine)
When cutting pipe with heat number, transfer the number.... - Ans✔✔-BEFORE
cutting
The letter "F", in A53F pipe stands for: - Ans✔✔-Furnace Welded
Repair permits are issued to the: - Ans✔✔-Licensed contractor doing the work
Adding a pipe branch by means of welding is allowed if... - Ans✔✔-The need for
reinforcements has been calculated
Under B31.5, pipe larger than what size is covered? - Ans✔✔-2"
, When welding stainless steel, what are the potentially dangerous oxides that
are produced? - Ans✔✔-Nickel and Chromium
What extinguishing agent is used in Class A fires? - Ans✔✔-Water
Medical sterilized smaller than ______cu. ft. are exempt? - Ans✔✔-1 1/2 cu. ft.
There is a $1,000 fine for anyone working, without a license, on pressure
piping. - Ans✔✔-True
Pool boilers are exempt if...... - Ans✔✔-the burner is wired in series with the
pump
What class of fire is burning magnesium? - Ans✔✔-Class D
Refrigerant or a/c units containing _____ cu. ft. or less of non-corrosive gases
are exempt. - Ans✔✔-3
Pressure relief devices must be approved by what agency? - Ans✔✔-ASME
(American Society of Mechanical Engineers)
When hydro testing NBEP (Non-Boiler External Piping), it must be off from the
boiler and tested at how many times the operating pressure? - Ans✔✔-1 1/2
When securing wire rope, the clips are applied: - Ans✔✔-Saddle on live end
