Low pressure steam boiler practice test Correct 100%
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Course
Lower pressure boiler
Institution
Lower Pressure Boiler
Why is a siphon or pig-tail important between the steam space of a boiler and the steam gauge or boiler control instruments - ANSWER Protects gauge or instruments
What is the most important electro-machanical device on a boiler - ANSWER Low water cut out
The energy in steam is primarily from ...
Low pressure steam boiler practice test Correct
100%
Why is a siphon or pig-tail important between the steam space of a boiler and the steam gauge or boiler
control instruments - ANSWER Protects gauge or instruments
What is the most important electro-machanical device on a boiler - ANSWER Low water cut out
The energy in steam is primarily from its content of.. - ANSWER Heat
A btu is the amount of heat required... - ANSWER To raise one pound of water 1 degree
Increasing the pressure on a boiler... - ANSWER Increases the boiling temperature of the water
A device that will allow condensate and air to flow through it but not steam is called a... - ANSWER Trap
The purpose of a low water cut out on a steam boiler is to... - ANSWER Shut off the burner when a low
water condition exists
Heat always flows from a - ANSWER Hot body to a cold body
To prevent air pressure from building up inside the boiler when filling with water, the... must be open -
ANSWER Boiler vent
... causes false water level readings in the gauge glass - ANSWER Foaming
The amount of heat in a fuel is measured in... - ANSWER BTU's
, Water added to the boiler to replace water lost due to leaks and blowing down is known as... - ANSWER
Makeup
The metal in a fusible plug will melt at a temperature of - ANSWER 450 degrees
The proper way of warming a new gauge glass is - ANSWER Open the upper steam valve first
During a low water condition when no water shows in the gauge glass, you should... - ANSWER Stop the
burner
The element in water that is most likely to cause corrosion in your boiler is... - ANSWER Oxygen
The ASME code requires that any main steam valve that is over 2" in diameter be... - ANSWER Outside
yoke and rising stem
A forced draft is usually found... - ANSWER Before the fire
The best way to prepare a safety valve for a hydrostatic test is... - ANSWER Use a gag
When a safety valve hangs up, it... - ANSWER Will not close tight
When two valves are used on a bottom blow down line and they are installed correctly, what sequence
of operation is used? - ANSWER The valve closest to the boiler is opened first and closed last
The largest size bottom blow down valve permitted by ASME code is... - ANSWER 2.5"
The closing of an approved safety valve is done by... - ANSWER Spring
Internal corrosion of a boiler is greatly reduced by carrying the PH of the condensate return at... -
ANSWER 10.5
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