MN Boilers test practice (special)
The dial on a steam gauge on a low-pressure boiler must be graduated from _ to _ times the maximum allowable working pressure - correct answer 1 1/2 to 2
What is the minimum size of pipe diameter that may be used to attach a steam gauge to a steam boiler? - co...
The dial on a steam gauge on a low-pressure boiler must be graduated from _ to _ times the maximum
allowable working pressure - correct answer 1 1/2 to 2
What is the minimum size of pipe diameter that may be used to attach a steam gauge to a steam boiler?
- correct answer 1/4 inch
Steam boilers are designed to operate at or below what PSI? - correct answer 15
Liquid Boilers are designed to operate at or below what PSI? - correct answer 160
What is the term of the area of the boiler that has water/liquid on one side and the heat source on the
other? - correct answer Heating Surface
What type of safety valve is required on a steam boiler? - correct answer Spring-Loaded
When the heating surface of a _____-pressure boiler exceeds ____ square feet, the minimum number of
safety valves is what? - correct answer High, 500, 2 or more
4 1/2 inches is the maximum size safety valve that may be installed on on a _________ boiler - correct
answer low-pressure
The maximum size safety relief valve on a low-pressure boiler is what? - correct answer 4 1/2 inches
How many Kw equals 1 boiler horsepower? - correct answer 10
10 Kw is equal to how much boiler horesepower? - correct answer 1
, What does ASME stand for? - correct answer American Society of Mechanical Engineers
What does NBIC stand for? - correct answer National Board Inspection Code
What kind of stamp is needed in order to legally be able to weld on a boiler? - correct answer "R"
In the state of Minnesota, how often do Boilers get inspected by an insurance company or a State Boiler
Inspector? - correct answer Yearly
How many square feet is considered equivalent to 1 boiler horsepower? - correct answer 10
What must be easily accessible/in view in the boiler room? - correct answer Boiler log, certificates of all
employees qualified to work on boiler
What is the minimum size pipe that may be used to connect a water column to high pressure boilers?
(other than miniature boilers) - correct answer 1 inch
Water columns of steel must be used if pressure is over _____ psi - correct answer 350
An outside _____ and ______ _______ valve may be used between a high-pressure steam boiler and the
water column - correct answer screw, yolk, gate
How must water column connections be at right angle turns to enable cleaning and inspections? -
correct answer Must be a cross instead of an elbow.
_____ is the minimum size drain required on a water column - correct answer 3/4 inch
If the water gauge glass became plugged or broken on a steam boiler, the boiler could temporarily
operate using the _____? - correct answer gauge-cocks(try-cocks)
A ______ cock used on a steam gauge must be a _ or ____ valve - correct answer Stop, T, lever
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