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MN special boilers with 100- correct answers.
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MN special boilers with 100- correct answers.
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MN special boilerswith 100% correct
answers
How many square feet of heating surface is equal to one boiler
horse power
10 sq. ft
What is meant by the term low pressure boiler
Boilers operating at a steam or other vapor pressure of 15 psig or
less or a water or other liquid boiler in witch the pressure doesn't
exceed 160 psig or a temperature of 250
A person holding a current Minnesota special boilers license could
be in charge of what types of boilers
High and low pressure boilers that don't exceed 50 boiler
horsepower
A special engineer could be a shift engineer in a plant of not more
than
100 boiler horsepower
A special Engineer may serve as an apprentice in what size water or
steam boiler
In any plant if under direct supervision of the properly licensed
engineer
The purpose of the low water cut out on a steam or hot water boiler
is to?
Shut off the burner when a low water condition exists
A tri-indicator can be found on a
Hot water boiler
A tri indicator would inform the boiler operator of what?
, The TEMPERATURE of the water, the PRESSURE of the water in PSIG,
and the ALTITUDE of water in feet.
In A.S.M.E approved safety relief valve used on a hot water boiler,
tested at the factory on
Steam first then hot water
Some of the things you could find on a steam or hot water boiler are
1 low water cut out 2 safety valve or safety relief valve 3 pressure
gauge
On a steam or hot water boiler the safety valve or safety relief valve
could be tested by
By lifting the lever on the valve or raising the pressure until they
operate.
Bottom, blowdown valves are provided for both steam and hot
water
True
Safety valves or safety relief valves should be manually tested at
lest
Quarterly
The low water cut out is one of the most important
electrical/mechanical devices on your boiler test it
Daily
What device must be located between a hot water boiler and the
expansion tank
A shut off valve so the expansion can be isolated and drained during
operation of the boiler.
On a hot water boiler every time the burner operates the safety
relief valve opens. Why
Because the expansion tank is waterlogged
To reduce thermal shock on a hot water boiler what devices are
used?
Low limit or low fire hold control, three way valve, run around pump.
What is one reason, causing the expansion tank to fill with water?
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