MN STATE SPECIAL BOILER LICENSE
STUDY GUIDE | SIMPLIFIED NOTES +
PRACTICE TESTS
American Society of Mechanical Engineers - correct answers ✔✔ASME
National Board Inspection Code - correct answers ✔✔NBIC
2 - correct answers ✔✔A high-pressure steam boiler is required to have ______ valves
on the main steam line.
1 - correct answers ✔✔10 square feet is equivalent to _____ boiler horsepower for
conventional boilers
, 1 inch - correct answers ✔✔Minimum size pipe to be used to connect a water column to
high pressure boilers
350 psi - correct answers ✔✔Water Columns of steel must be used if pressure is over
_____
3/4 inch - correct answers ✔✔Minimum size drain required on a water column is
gauge-cocks (try-cocks) - correct answers ✔✔If water gauge glass becomes inoperable
on steam boiler, the boiler could temporarily operate using
1 1/2 to 2 - correct answers ✔✔Dial on a steam gauge on a low-pressure boiler must be
graduated from ________ times the maximum allowable working pressure
1/4 inch - correct answers ✔✔Minimum size of pipe diameter that may be used to
attach a steam gauge to a steam boiler
Steam boilers at or below 15 psi, Liquid boilers operating at or below 160 psi AND 250
degrees Fahrenheit - correct answers ✔✔Low-pressure boiler
Steam boiler > 15psi, liquid boilers operating > 160 psi OR > 250 degrees Fahrenheit -
correct answers ✔✔High-pressure boiler
Spring loaded - correct answers ✔✔_________ safety valve required on a steam boiler
2 - correct answers ✔✔How many safety valves minimum are needed when the heating
surface of a high-pressure boiler exceeds 500 square feet
4 1/2 inch - correct answers ✔✔Maximum size of safety valve on a low-pressure boiler
is
3/4 inch - correct answers ✔✔Minimum safety valve size on a regular boiler (high or low
pressure)
1/2 inch - correct answers ✔✔Minimum safety valve size on a MINITURE boiler
once a month - correct answers ✔✔Safety valves on steam boilers should be manually
tested
quarterly - correct answers ✔✔Safety valves on a low-pressure boiler should be
manually tested
drain valve - correct answers ✔✔When 2 or more steam valves are located on a steam
header line, there must be a ______ located between the 2 valves
STUDY GUIDE | SIMPLIFIED NOTES +
PRACTICE TESTS
American Society of Mechanical Engineers - correct answers ✔✔ASME
National Board Inspection Code - correct answers ✔✔NBIC
2 - correct answers ✔✔A high-pressure steam boiler is required to have ______ valves
on the main steam line.
1 - correct answers ✔✔10 square feet is equivalent to _____ boiler horsepower for
conventional boilers
, 1 inch - correct answers ✔✔Minimum size pipe to be used to connect a water column to
high pressure boilers
350 psi - correct answers ✔✔Water Columns of steel must be used if pressure is over
_____
3/4 inch - correct answers ✔✔Minimum size drain required on a water column is
gauge-cocks (try-cocks) - correct answers ✔✔If water gauge glass becomes inoperable
on steam boiler, the boiler could temporarily operate using
1 1/2 to 2 - correct answers ✔✔Dial on a steam gauge on a low-pressure boiler must be
graduated from ________ times the maximum allowable working pressure
1/4 inch - correct answers ✔✔Minimum size of pipe diameter that may be used to
attach a steam gauge to a steam boiler
Steam boilers at or below 15 psi, Liquid boilers operating at or below 160 psi AND 250
degrees Fahrenheit - correct answers ✔✔Low-pressure boiler
Steam boiler > 15psi, liquid boilers operating > 160 psi OR > 250 degrees Fahrenheit -
correct answers ✔✔High-pressure boiler
Spring loaded - correct answers ✔✔_________ safety valve required on a steam boiler
2 - correct answers ✔✔How many safety valves minimum are needed when the heating
surface of a high-pressure boiler exceeds 500 square feet
4 1/2 inch - correct answers ✔✔Maximum size of safety valve on a low-pressure boiler
is
3/4 inch - correct answers ✔✔Minimum safety valve size on a regular boiler (high or low
pressure)
1/2 inch - correct answers ✔✔Minimum safety valve size on a MINITURE boiler
once a month - correct answers ✔✔Safety valves on steam boilers should be manually
tested
quarterly - correct answers ✔✔Safety valves on a low-pressure boiler should be
manually tested
drain valve - correct answers ✔✔When 2 or more steam valves are located on a steam
header line, there must be a ______ located between the 2 valves
