MN State Special Boiler License Study
Guide Questions and Answers Already
Graded A+
American Society of Mechanical Engineers - correct answer ✔✔ASME
National Board Inspection Code - correct answer ✔✔NBIC
2 - correct answer ✔✔A high-pressure steam boiler is required to have ______ valves on the
main steam line.
1 - correct answer ✔✔10 square feet is equivalent to _____ boiler horsepower for conventional
boilers
1 inch - correct answer ✔✔Minimum size pipe to be used to connect a water column to high
pressure boilers
350 psi - correct answer ✔✔Water Columns of steel must be used if pressure is over _____
3/4 inch - correct answer ✔✔Minimum size drain required on a water column is
gauge-cocks (try-cocks) - correct answer ✔✔If water gauge glass becomes inoperable on steam
boiler, the boiler could temporarily operate using
1 1/2 to 2 - correct answer ✔✔Dial on a steam gauge on a low-pressure boiler must be
graduated from ________ times the maximum allowable working pressure
, 1/4 inch - correct answer ✔✔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 answer ✔✔Low-pressure boiler
Steam boiler > 15psi, liquid boilers operating > 160 psi OR > 250 degrees Fahrenheit - correct
answer ✔✔High-pressure boiler
Spring loaded - correct answer ✔✔_________ safety valve required on a steam boiler
2 - correct answer ✔✔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 answer ✔✔Maximum size of safety valve on a low-pressure boiler is
3/4 inch - correct answer ✔✔Minimum safety valve size on a regular boiler (high or low
pressure)
1/2 inch - correct answer ✔✔Minimum safety valve size on a MINITURE boiler
once a month - correct answer ✔✔Safety valves on steam boilers should be manually tested
quarterly - correct answer ✔✔Safety valves on a low-pressure boiler should be manually tested
drain valve - correct answer ✔✔When 2 or more steam valves are located on a steam header
line, there must be a ______ located between the 2 valves
Guide Questions and Answers Already
Graded A+
American Society of Mechanical Engineers - correct answer ✔✔ASME
National Board Inspection Code - correct answer ✔✔NBIC
2 - correct answer ✔✔A high-pressure steam boiler is required to have ______ valves on the
main steam line.
1 - correct answer ✔✔10 square feet is equivalent to _____ boiler horsepower for conventional
boilers
1 inch - correct answer ✔✔Minimum size pipe to be used to connect a water column to high
pressure boilers
350 psi - correct answer ✔✔Water Columns of steel must be used if pressure is over _____
3/4 inch - correct answer ✔✔Minimum size drain required on a water column is
gauge-cocks (try-cocks) - correct answer ✔✔If water gauge glass becomes inoperable on steam
boiler, the boiler could temporarily operate using
1 1/2 to 2 - correct answer ✔✔Dial on a steam gauge on a low-pressure boiler must be
graduated from ________ times the maximum allowable working pressure
, 1/4 inch - correct answer ✔✔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 answer ✔✔Low-pressure boiler
Steam boiler > 15psi, liquid boilers operating > 160 psi OR > 250 degrees Fahrenheit - correct
answer ✔✔High-pressure boiler
Spring loaded - correct answer ✔✔_________ safety valve required on a steam boiler
2 - correct answer ✔✔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 answer ✔✔Maximum size of safety valve on a low-pressure boiler is
3/4 inch - correct answer ✔✔Minimum safety valve size on a regular boiler (high or low
pressure)
1/2 inch - correct answer ✔✔Minimum safety valve size on a MINITURE boiler
once a month - correct answer ✔✔Safety valves on steam boilers should be manually tested
quarterly - correct answer ✔✔Safety valves on a low-pressure boiler should be manually tested
drain valve - correct answer ✔✔When 2 or more steam valves are located on a steam header
line, there must be a ______ located between the 2 valves
