MN State Special Boiler License Study
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Guide questions with answers |\ |\ |\
ASME - CORRECT ANSWERS ✔✔American Society of Mechanical
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Engineers
NBIC - CORRECT ANSWERS ✔✔National Board Inspection Code
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A high-pressure steam boiler is required to have ______ valves on
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the main steam line. - CORRECT ANSWERS ✔✔2
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10 square feet is equivalent to _____ boiler horsepower for
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conventional boilers - CORRECT ANSWERS ✔✔1 |\ |\ |\ |\ |\
Minimum size pipe to be used to connect a water column to high
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pressure boilers - CORRECT ANSWERS ✔✔1 inch
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Water Columns of steel must be used if pressure is over _____ -
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CORRECT ANSWERS ✔✔350 psi |\ |\ |\
Minimum size drain required on a water column is - CORRECT
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ANSWERS ✔✔3/4 inch |\ |\
If water gauge glass becomes inoperable on steam boiler, the
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boiler could temporarily operate using - CORRECT ANSWERS
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✔✔gauge-cocks (try-cocks) |\
, Dial on a steam gauge on a low-pressure boiler must be
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graduated from ________ times the maximum allowable working
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pressure - CORRECT ANSWERS ✔✔1 1/2 to 2
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Minimum size of pipe diameter that may be used to attach a
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steam gauge to a steam boiler - CORRECT ANSWERS ✔✔1/4 inch
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Low-pressure boiler - CORRECT ANSWERS ✔✔Steam boilers at or |\ |\ |\ |\ |\ |\ |\ |\ |\
below 15 psi, Liquid boilers operating at or below 160 psi AND
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250 degrees Fahrenheit
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High-pressure boiler - CORRECT ANSWERS ✔✔Steam boiler > |\ |\ |\ |\ |\ |\ |\ |\
15psi, liquid boilers operating > 160 psi OR > 250 degrees
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Fahrenheit
_________ safety valve required on a steam boiler - CORRECT
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ANSWERS ✔✔Spring loaded |\ |\
How many safety valves minimum are needed when the heating
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surface of a high-pressure boiler exceeds 500 square feet -
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CORRECT ANSWERS ✔✔2 |\ |\
Maximum size of safety valve on a low-pressure boiler is -
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CORRECT ANSWERS ✔✔4 1/2 inch |\ |\ |\ |\
Minimum safety valve size on a regular boiler (high or low
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pressure) - CORRECT ANSWERS ✔✔3/4 inch
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Guide questions with answers |\ |\ |\
ASME - CORRECT ANSWERS ✔✔American Society of Mechanical
|\ |\ |\ |\ |\ |\ |\ |\
Engineers
NBIC - CORRECT ANSWERS ✔✔National Board Inspection Code
|\ |\ |\ |\ |\ |\ |\
A high-pressure steam boiler is required to have ______ valves on
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the main steam line. - CORRECT ANSWERS ✔✔2
|\ |\ |\ |\ |\ |\ |\
10 square feet is equivalent to _____ boiler horsepower for
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
conventional boilers - CORRECT ANSWERS ✔✔1 |\ |\ |\ |\ |\
Minimum size pipe to be used to connect a water column to high
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
pressure boilers - CORRECT ANSWERS ✔✔1 inch
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Water Columns of steel must be used if pressure is over _____ -
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CORRECT ANSWERS ✔✔350 psi |\ |\ |\
Minimum size drain required on a water column is - CORRECT
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ANSWERS ✔✔3/4 inch |\ |\
If water gauge glass becomes inoperable on steam boiler, the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
boiler could temporarily operate using - CORRECT ANSWERS
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✔✔gauge-cocks (try-cocks) |\
, Dial on a steam gauge on a low-pressure boiler must be
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graduated from ________ times the maximum allowable working
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pressure - CORRECT ANSWERS ✔✔1 1/2 to 2
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Minimum size of pipe diameter that may be used to attach a
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steam gauge to a steam boiler - CORRECT ANSWERS ✔✔1/4 inch
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Low-pressure boiler - CORRECT ANSWERS ✔✔Steam boilers at or |\ |\ |\ |\ |\ |\ |\ |\ |\
below 15 psi, Liquid boilers operating at or below 160 psi AND
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250 degrees Fahrenheit
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High-pressure boiler - CORRECT ANSWERS ✔✔Steam boiler > |\ |\ |\ |\ |\ |\ |\ |\
15psi, liquid boilers operating > 160 psi OR > 250 degrees
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Fahrenheit
_________ safety valve required on a steam boiler - CORRECT
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ANSWERS ✔✔Spring loaded |\ |\
How many safety valves minimum are needed when the heating
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surface of a high-pressure boiler exceeds 500 square feet -
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CORRECT ANSWERS ✔✔2 |\ |\
Maximum size of safety valve on a low-pressure boiler is -
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CORRECT ANSWERS ✔✔4 1/2 inch |\ |\ |\ |\
Minimum safety valve size on a regular boiler (high or low
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pressure) - CORRECT ANSWERS ✔✔3/4 inch
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